SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (MARK ONE) [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2001 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ Commission File Number 001-13459 AFFILIATED MANAGERS GROUP, INC. ------------------------------------------------------ (Exact name of registrant as specified in its charter) DELAWARE 04-3218510 -------- ---------- (State or other jurisdiction of (IRS Employer Identification Number) incorporation or organization) TWO INTERNATIONAL PLACE, BOSTON, MASSACHUSETTS 02110 ---------------------------------------------------- (Address of principal executive offices) (617) 747-3300 ---------------------------------------------------- (Registrant's telephone number, including area code) Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes [X] No [ ] The number of shares of the Registrant's Common Stock outstanding as of May 14, 2001 was 22,082,841.

PART I - FINANCIAL INFORMATION ITEM 1. FINANCIAL STATEMENTS AFFILIATED MANAGERS GROUP, INC. CONSOLIDATED BALANCE SHEETS (IN THOUSANDS) December 31, 2000 March 31, 2001 ---------------------- -------------------- (unaudited) ASSETS Current assets: Cash and cash equivalents.................................... $ 31,612 $ 27,147 Investment advisory fees receivable.......................... 66,126 51,313 Other current assets ........................................ 15,448 15,558 ---------------------- -------------------- Total current assets................................... 113,186 94,018 Fixed assets, net............................................... 15,346 15,087 Equity investment in Affiliate.................................. 1,816 1,747 Acquired client relationships, net of accumulated amortization of $33,775 in 2000 and $36,726 in 2001....................... 199,354 197,296 Goodwill, net of accumulated amortization of $51,939 in 2000 and $55,890 in 2001.......................................... 444,116 441,791 Other assets.................................................... 19,912 18,522 ---------------------- -------------------- Total assets............................................ $ 793,730 $ 768,461 ====================== ==================== LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable and accrued liabilities..................... $ 86,800 $ 54,943 ---------------------- -------------------- Total current liabilities............................... 86,800 54,943 Senior bank debt................................................ 151,000 146,700 Deferred taxes.................................................. 31,907 33,159 Other long-term liabilities..................................... 2,636 2,786 Subordinated debt............................................... 800 800 ---------------------- -------------------- Total liabilities....................................... 273,143 238,388 Minority interest............................................... 26,677 24,459 Commitments and contingencies................................... --- --- Stockholders' equity: Common stock.................................................... 235 235 Additional paid-in capital...................................... 407,057 407,559 Accumulated other comprehensive income.......................... (342) (1,620) Retained earnings............................................... 140,513 152,443 ---------------------- -------------------- 547,463 558,617 Less treasury stock, at cost.................................... (53,553) (53,003) Total stockholders' equity.............................. 493,910 505,614 ---------------------- -------------------- Total liabilities and stockholders' equity.............. $ 793,730 $ 768,461 ====================== ==================== The accompanying notes are an integral part of the consolidated financial statements. 2

AFFILIATED MANAGERS GROUP, INC. CONSOLIDATED STATEMENTS OF INCOME (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA) (UNAUDITED) For the Three Months Ended March 31, ------------------------------------- 2000 2001 ---------------- -------------- Revenues.................................................... $ 114,798 $ 100,475 Operating expenses: Compensation and related expenses........................ 44,415 34,208 Amortization of intangible assets........................ 6,444 6,902 Depreciation and other amortization...................... 953 1,358 Selling, general and administrative...................... 16,628 18,080 Other operating expenses................................. 2,423 2,615 ---------------- -------------- 70,863 63,163 ---------------- -------------- Operating income.................................. 43,935 37,312 Non-operating (income) and expenses: Investment and other income.............................. (1,638) (524) Interest expense......................................... 3,847 3,161 ---------------- -------------- 2,209 2,637 ---------------- -------------- Income before minority interest and income taxes............ 41,726 34,675 Minority interest........................................... (18,311) (14,792) ---------------- -------------- Income before income taxes.................................. 23,415 19,883 Income taxes................................................ 9,600 7,953 ---------------- -------------- Net income.................................................. $ 13,815 $ 11,930 ================ ============== Earnings per share - basic.................................. $ 0.61 $ 0.54 Earnings per share - diluted................................ $ 0.60 $ 0.53 Average shares outstanding - basic.......................... 22,722,493 22,063,166 Average shares outstanding - diluted........................ 23,099,721 22,567,819 The accompanying notes are an integral part of the consolidated financial statements. 3

AFFILIATED MANAGERS GROUP, INC. CONSOLIDATED STATEMENTS OF CASH FLOWS (IN THOUSANDS) (UNAUDITED) For the Three Months Ended March 31, ------------------------------- 2000 2001 ------------- ------------- Cash flow from operating activities: Net income................................................................. $ 13,815 $ 11,930 Adjustments to reconcile net income to net cash flow from operating activities: Amortization of intangible assets.......................................... 6,444 6,902 Depreciation and other amortization........................................ 953 1,358 Deferred income tax provision.............................................. 2,598 2,115 Changes in assets and liabilities: Decrease in investment advisory fees receivable............................ 175,082 14,813 Increase in other current assets........................................... (7,635) (110) (Increase) decrease in non-current other receivables....................... (822) 2,668 Decrease in accounts payable, accrued expenses and other liabilities....... (105,388) (33,866) Minority interest.......................................................... (33,411) (2,218) ------------- ------------- Cash flow from operating activities................................. 51,636 3,592 ------------- ------------- Cash flow used in investing activities: Purchase of fixed assets................................................... (1,842) (1,046) Costs of investments, net of cash acquired................................. (99,101) (3,844) (Increase) decrease in other assets........................................ (212) 63 Loans to employees......................................................... (65) --- ------------- ------------- Cash flow used in investing activities............................... (101,220) (4,827) ------------- ------------- Cash flow from (used in) financing activities: Borrowings of senior bank debt............................................. 146,000 36,000 Repayments of senior bank debt............................................. (93,000) (40,300) Issuances of equity securities............................................. 4,173 1,750 Repurchase of stock........................................................ (25,549) (698) Debt issuance costs........................................................ (15) --- ------------- ------------- Cash flow from (used in) financing activities........................ 31,609 (3,248) Effect of foreign exchange rate changes on cash flow.......................... (24) 18 Net decrease in cash and cash equivalents..................................... (17,999) (4,465) Cash and cash equivalents at beginning of period.............................. 53,879 31,612 ------------- ------------- Cash and cash equivalents at end of period.................................... $ 35,880 $ 27,147 ============= ============= The accompanying notes are an integral part of the consolidated financial statements. 4

1. BASIS OF PRESENTATION The consolidated financial statements of Affiliated Managers Group, Inc. (the "Company" or "AMG") have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. The year-end condensed balance sheet data was derived from audited financial statements, but does not include all of the disclosures required by generally accepted accounting principles. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. All material intercompany balances and transactions have been eliminated. All dollar amounts except per share data in the text and tables herein are stated in thousands unless otherwise indicated. Operating results for interim periods are not necessarily indicative of the results that may be expected for the full year. The Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2000 includes additional information about AMG, its operations, and its financial position, and should be read in conjunction with this quarterly report on Form 10-Q. 2. DERIVATIVE FINANCIAL INSTRUMENTS On January 1, 2001, the Company adopted Statement of Financial Accounting Standards No. 133 ("FAS 133"), "Accounting for Derivative Instruments and Hedging Activities," as amended by FAS 138 "Accounting For Certain Derivative Instruments and Certain Hedging Activities." FAS 133 requires that all derivatives be recorded on the balance sheet at fair value and establishes criteria for designation and effectiveness of hedging relationships. The cumulative effect of adopting FAS 133 was not material to the Company's consolidated financial statements. The Company is exposed to interest rate risk inherent in its variable rate debt liabilities. The Company's risk management strategy uses financial instruments, specifically interest rate swap contracts, to hedge certain interest rate exposures. In entering into these contracts, AMG intends to offset cash flow gains and losses that occur on its existing debt liabilities with cash flow losses and gains on the contracts hedging these liabilities. The Company agrees with a counterparty (typically a major commercial bank) to exchange the difference between fixed-rate and floating-rate interest amounts calculated by reference to an agreed notional principal amount. The Company intends to hold its current interest rate swap contracts until its revolving credit facility matures in December 2002, or until the Company repays all senior debt under that facility. During the period ended March 31, 2001, the Company did not discontinue any hedging activities or terminate any variable debt instruments. The Company records all derivatives on the balance sheet at fair value. As the Company's hedges are designated and qualify as cash flow hedges, the effective portion of the unrealized gain or loss on the derivative instrument is recorded in accumulated other comprehensive income as a separate component of stockholders' equity and reclassified into earnings when periodic settlement of variable rate liabilities are recorded in earnings. For interest rate swaps, hedge effectiveness is measured by comparing the cumulative change in the variable cash flows of the hedged contract with the cumulative change in the variable cash flows of the hedged item, both of which are based on LIBOR rates. To the extent that the critical terms of the hedged item and the derivative are not identical, hedge ineffectiveness is reported in earnings as interest expense. Hedge ineffectiveness was not material in the first quarter of fiscal 2001. At March 31, 2001, the net fair value of the Company's interest rate swap liability was $233, and was recorded on the consolidated balance sheet in accounts payable and accrued liabilities. AMG estimates the fair values of derivatives based on quoted market prices. At March 31, 2001, the Company had recorded approximately $1,296 of net unrealized losses on derivative instruments, net of taxes, in accumulated other comprehensive income. AMG expects that approximately 70% of these losses will be reclassified to earnings within one year, and that the remainder will be reclassified to earnings after one year. 5

3. COMPREHENSIVE INCOME The Company's comprehensive income includes net income, changes in unrealized foreign currency gains and losses and changes in unrealized gains and losses on derivative instruments, which also include the cumulative effect of adopting FAS 133. Comprehensive income, net of taxes, was as follows: For the Three Months Ended March 31, ----------------------------------- 2000 2001 --------------- -------------- Net income.......................................................... $ 13,815 $ 11,930 Change in unrealized foreign currency gains (losses)................ (24) 18 Change in net unrealized loss on derivative instruments............. --- (140) Cumulative effect of change in accounting principle - FAS 133 transition adjustment........................................... --- (1,321) Reclassification of FAS 133 transition adjustment to net income....... --- 165 --------------- -------------- Comprehensive income................................................ $ 13,791 $ 10,652 =============== ============== The components of accumulated other comprehensive income, net of taxes, were as follows: December 31, March 31, 2000 2001 -------------- ----------- Foreign currency translation adjustment......................... $ (342) $ (324) Unrealized loss on derivative instruments....................... --- (1,296) --------------- ------------- Accumulated other comprehensive income.......................... $ (342) $ (1,620) =============== ============= 4. ACQUISITIONS On March 29, 2001, the Company purchased a minority interest in Dublin Fund Distributors, N.V., the parent company of Edgehill Select Group, L.L.C. and Edgehill Select Group, S.A.R.L. The investment was funded through a borrowing under the Company's revolving credit facility. 5. INCOME TAXES A summary of the provision for income taxes is as follows: For the Three Months Ended March 31, -------------------------- 2000 2001 ---------- ---------- Federal: Current.............................................. $ 5,969 $ 4,744 Deferred............................................. 2,218 2,215 State: Current.............................................. 1,033 678 Deferred............................................. 380 316 -------------- ------------ Provision for income taxes................................ $ 9,600 $ 7,953 ============== ============ 6. EARNINGS PER SHARE The calculation of basic earnings per share is based on the weighted average of common shares outstanding during the period. The calculation of diluted earnings per share gives effect to all potential dilution from the Company's stock option plans. The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computations. Unlike all other dollar amounts in these footnotes, net income in this table is not presented in thousands. 6

Three Months Ended March 31, ----------------------------------------- 2000 2001 ------------------- ------------------- Numerator: Net income.......................................... $ 13,815,000 $ 11,930,000 Denominator: Average shares outstanding - basic.................. 22,722,493 22,063,166 Incremental shares for stock options .............. 377,228 504,653 ---------------- -------------- Average shares outstanding - diluted................ 23,099,721 22,567,819 ================ ============== Earnings per share: Basic............................................... $ 0.61 $ 0.54 Diluted............................................. $ 0.60 $ 0.53 On April 20, 2000, the Board of Directors authorized a share repurchase program pursuant to which AMG can repurchase up to five percent of its issued and outstanding shares of Common Stock, with the timing of purchases and the amount of stock purchased determined at the discretion of AMG's management. The Board of Directors authorized a similar repurchase program in 1999. For the twelve-month period ended March 31, 2001, the Company repurchased a total of 594,200 shares of Common Stock under these two programs. 7. SUBSEQUENT EVENTS On April 10, 2001, Renaissance Investment Management, an investment management firm in which the Company owns a majority interest, and Bowling Portfolio Management, Inc. entered into a definitive agreement to merge. Bowling is a Cincinnati-based asset manager, which has $400 million in assets under management. AMG will own a majority of the combined firm. This transaction is expected to close upon receipt of customary approvals and will be funded through the Company's working capital. On May 7 and May 14, 2001, the Company completed private placements of zero-coupon convertible notes in which it realized net proceeds of approximately $221 million. In the placements, the Company sold a total of $251 million principal amount at maturity of zero-coupon convertible notes due 2021, with each $1,000 note issued at 90.495% of such principal amount and accreting at a rate of 0.50% per annum. Each security is convertible into 11.6195 shares of AMG Common Stock upon the occurrence of any of the following events: (i) if for certain periods in any calendar quarter, the closing sale price of AMG Common Stock is more than a specified price (initially $93.53 and increasing incrementally each calendar quarter for the next twenty years to $94.62 on April 1, 2021); (ii) if the credit rating assigned to the security is below a specified level; (iii) if AMG calls the convertible securities for redemption; or (iv) in the event that AMG takes certain corporate actions. The Company may redeem the convertible notes for cash on or after May 7, 2006. The Company may be required to repurchase the securities at their accreted value at the option of the holders on May 7 of 2002, 2004, 2006, 2011 and 2016. The Company may choose to pay the purchase price for such repurchases in cash or shares of AMG Common Stock. As of May 14, 2001, AMG had used approximately $101 million of the proceeds to repay existing indebtedness, and intends to use the balance to repay additional indebtedness and for general corporate purposes. ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS FORWARD-LOOKING STATEMENTS WHEN USED IN THIS FORM 10-Q AND IN OUR FUTURE FILINGS WITH THE SECURITIES AND EXCHANGE COMMISSION, IN OUR PRESS RELEASES AND IN ORAL STATEMENTS MADE WITH THE APPROVAL OF AN AUTHORIZED EXECUTIVE OFFICER, THE WORDS OR PHRASES "WILL LIKELY RESULT," "ARE EXPECTED TO," "WILL CONTINUE," "IS ANTICIPATED," "BELIEVES," "ESTIMATE," "PROJECT," OR SIMILAR EXPRESSIONS ARE INTENDED TO IDENTIFY "FORWARD-LOOKING STATEMENTS" WITHIN THE MEANING OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995. SUCH STATEMENTS ARE SUBJECT TO CERTAIN RISKS AND UNCERTAINTIES, INCLUDING, AMONG OTHERS, THE FOLLOWING: o OUR PERFORMANCE IS DIRECTLY AFFECTED BY CHANGING CONDITIONS IN THE FINANCIAL AND SECURITIES MARKETS, AND A DECLINE OR A LACK OF SUSTAINED GROWTH IN THE FINANCIAL MARKETS MAY RESULT IN DECREASED ADVISORY FEES OR PERFORMANCE FEES AND A CORRESPONDING DECLINE (OR LACK OF GROWTH) IN THE CASH FLOW DISTRIBUTABLE TO US FROM OUR AFFILIATES; 7

o WE CANNOT BE CERTAIN THAT WE WILL BE SUCCESSFUL IN FINDING OR INVESTING IN ADDITIONAL INVESTMENT MANAGEMENT FIRMS ON FAVORABLE TERMS, OR THAT EXISTING AND NEW AFFILIATES WILL HAVE FAVORABLE OPERATING RESULTS; o WE WILL NEED TO RAISE CAPITAL BY MAKING LONG-TERM OR SHORT-TERM BORROWINGS OR BY SELLING SHARES OF OUR STOCK IN ORDER TO FINANCE INVESTMENTS IN ADDITIONAL INVESTMENT MANAGEMENT FIRMS, AND WE CANNOT BE SURE THAT SUCH CAPITAL WILL BE AVAILABLE TO US ON ACCEPTABLE TERMS; AND o THOSE CERTAIN OTHER FACTORS DISCUSSED UNDER THE CAPTION "BUSINESS-CAUTIONARY STATEMENTS" IN OUR ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 2000. THESE FACTORS (AMONG OTHERS) COULD AFFECT OUR FINANCIAL PERFORMANCE AND CAUSE OUR ACTUAL RESULTS TO DIFFER MATERIALLY FROM HISTORICAL EARNINGS AND THOSE PRESENTLY ANTICIPATED AND PROJECTED. WE WILL NOT UNDERTAKE AND WE SPECIFICALLY DISCLAIM ANY OBLIGATION TO RELEASE PUBLICLY THE RESULT OF ANY REVISIONS WHICH MAY BE MADE TO ANY FORWARD-LOOKING STATEMENTS TO REFLECT EVENTS OR CIRCUMSTANCES AFTER THE DATE OF SUCH STATEMENTS OR TO REFLECT THE OCCURRENCE OF EVENTS, WHETHER OR NOT ANTICIPATED. IN THAT RESPECT, WE WISH TO CAUTION READERS NOT TO PLACE UNDUE RELIANCE ON ANY SUCH FORWARD-LOOKING STATEMENTS, WHICH SPEAK ONLY AS OF THE DATE MADE. OVERVIEW We buy and hold equity interests in investment management firms and currently derive all of our revenues from those firms. Our affiliated investment management firms in aggregate managed $69.7 billion in assets at March 31, 2001. We describe the mid-sized investment management firms in which we invest as our "Affiliates." We have a revenue sharing arrangement with each of our Affiliates which allocates a specified percentage of revenues (typically 50-70%) for use by management of that Affiliate in paying operating expenses, including salaries and bonuses, which we refer to as the "Operating Allocation." The remaining portion of revenues of each such Affiliate (typically 30-50%) is referred to as the "Owners' Allocation," and is allocated to the owners of that Affiliate (including AMG) in general proportion to their ownership of the Affiliate. In certain cases our profit distribution is paid to us in the form of a guaranteed payment for the use of our capital or a license fee, which in each case is paid from the Owners' Allocation. One of the purposes of our revenue sharing arrangements is to provide ongoing incentives for the managers of these Affiliates by allowing them: o to participate in the growth of their firm's revenues, which may increase their compensation from the Operating Allocation, and profit distributions from the Owners' Allocation; and o to control operating expenses, thereby increasing the portion of the Operating Allocation which is available for growth initiatives and compensation. Under the revenue sharing arrangements, the managers of our Affiliates have incentives both to increase revenues of the Affiliate (thereby increasing the Operating Allocation and their share of the Owners' Allocation) and to control expenses of the Affiliate (thereby increasing the excess Operating Allocation). The revenue sharing arrangements allow us to participate in the revenue growth of our Affiliates because we receive a portion of the additional revenue as our share of the Owners' Allocation. However, we participate in that growth to a lesser extent than the managers of our Affiliates, because we do not share in the growth of the Operating Allocation. Under the organizational documents of the Affiliates, the allocations and distributions of cash to us generally take priority over the allocations and distributions to the other owners of the Affiliates. This further protects us if there are any expenses in excess of the Operating Allocation of an Affiliate. Thus, if an Affiliate's expenses exceed its Operating Allocation, the excess expenses first reduce the portion of the Owners' Allocation allocated to the Affiliate's management owners, until that portion is eliminated, and then reduce the portion allocated to us. Any such reduction in our portion of the Owners' Allocation is required to be paid back to us out of future Affiliate management Owners' Allocation. Unlike all other Affiliates, The Managers Funds LLC is not subject to a revenue sharing arrangement since we own substantially all of the firm. As a result, we participate fully in any increase or decrease in the revenues or expenses of Managers. 8

The portion of our Affiliates' revenues which is included in their Operating Allocation and retained by them to pay salaries, bonuses and other operating expenses, as well as the portion of our Affiliates' revenues which are included in their Owners' Allocation and distributed to us and the other owners of the Affiliates, are included as "revenues" in our Consolidated Statements of Operations. The expenses of our Affiliates which are paid out of the Operating Allocation, as well as our holding company expenses which we pay out of the amounts of the Owners' Allocation which we receive from the Affiliates, are both included in "operating expenses" on our Consolidated Statements of Operations. The portion of our Affiliates' revenues which is allocated to owners of the Affiliates other than us through their share of Owners' Allocation is included in "minority interest" on our Consolidated Statements of Operations. Our revenues are generally derived from the provision of investment management services for fees by our Affiliates. Investment management fees (or "asset-based fees") are usually determined as a percentage fee charged on periodic values of a client's assets under management. Certain of the Affiliates bill advisory fees for all or a portion of their clients based upon assets under management valued at the beginning of a billing period ("in advance"). Other Affiliates bill advisory fees for all or a portion of their clients based upon assets under management valued at the end of the billing period ("in arrears"), while mutual fund clients are billed based upon daily assets. Advisory fees billed in advance will not reflect subsequent changes in the market value of assets under management for that period. Conversely, advisory fees billed in arrears will reflect changes in the market value of assets under management for that period. In addition, several of the Affiliates charge performance-based fees to certain of their clients; these performance-based fees result in payments to the applicable Affiliate based on levels of investment performance achieved. While the Affiliates bill performance-based fees at various times throughout the year, the greatest portion of these fees has historically been billed in the fourth quarter in any given year. All references to "assets under management" include assets directly managed as well as assets underlying overlay strategies (which we call "overlay assets"), which employ futures, options or other derivative securities to achieve a particular investment objective. Our level of profitability will depend on a variety of factors, including principally: o the level of Affiliate revenues, which is dependent on the ability of our existing and future Affiliates to maintain or increase assets under management by maintaining their existing investment advisory relationships and fee structures, marketing their services successfully to new clients and obtaining favorable investment results; o a variety of factors affecting the securities markets generally, which could potentially result in considerable increases or decreases in the assets under management at our Affiliates; o the receipt of Owners' Allocation, which is dependent on the ability of our existing and future Affiliates to maintain certain levels of operating profit margins; o the availability and cost of the capital with which we finance our existing and new investments; o our success in making new investments and the terms upon which such transactions are completed; o the level of intangible assets and the associated amortization expense resulting from our investments; o the level of expenses incurred for holding company operations, including compensation for its employees; and o the level of taxation to which we are subject. In addition, our profitability will depend upon fees paid on the basis of investment performance at certain Affiliates. Fees based on investment performance are inherently dependent on investment results, and therefore may vary substantially from year to year. In particular, performance-based fees were of an unusual magnitude in 1999, but were not as significant in 2000, and may not recur even to the same magnitude as in 2000 in future years, if at all. In addition, while the performance-based fee contracts of our Affiliates apply to investment management services in a range of investment management styles and securities market sectors, such contracts may be concentrated in certain styles and sectors. For example, in 1999 we benefited from a concentration of such products in technology sectors which performed well in that year but have declined significantly since that time. To the 9

extent such contracts are concentrated within styles or sectors, they are subject to the continuing impact of fluctuating securities prices in such styles and sectors as well as the performance of the relevant Affiliates. Our investments have been accounted for using the purchase method of accounting under which goodwill is recorded for the excess of the purchase price for the acquisition of interests in Affiliates over the fair value of the net assets acquired, including acquired client relationships. As a result of our investments, intangible assets, consisting of acquired client relationships and goodwill, constitute a substantial percentage of our consolidated assets. As of March 31, 2001, our total assets were approximately $768.5 million, of which approximately $197.3 million consisted of acquired client relationships and $441.8 million consisted of goodwill. The amortization period for intangible assets for each investment is assessed individually, with amortization periods for our investments to date ranging from seven to 28 years in the case of acquired client relationships and 15 to 35 years in the case of goodwill. In determining the amortization period for intangible assets acquired, we consider a number of factors including: o the firm's historical and potential future operating performance and rate of attrition among clients; o the stability and longevity of existing client relationships; o the firm's recent, as well as long-term, investment performance; o the characteristics of the firm's products and investment styles; o the stability and depth of the firm's management team; and o the firm's history and perceived franchise or brand value. We regularly perform an evaluation of intangible assets on an investment-by-investment basis to determine whether there has been any impairment in their carrying value or their useful lives. If impairment is indicated, then the carrying amount of intangible assets, including goodwill, will be reduced to their fair values. As a result of our investments, amortization expense, which is a non-cash charge, has historically represented a significant percentage of our expenses. In February 2001, the Financial Accounting Standards Board released a proposed accounting standard that, if adopted, would change the accounting for goodwill. If the standard is adopted, goodwill would no longer be amortized. Since goodwill amortization represented 58% of total intangible amortization expense in the quarter ended March 31, 2001, in the event that the standard were to be adopted, our net income and earnings per share under similar circumstances in a future quarter might potentially be higher. There can be no assurance that this standard will be adopted in its proposed form, or at all. Even if the pending accounting changes occur, intangible amortization (related to acquired client relationships) will continue to be a material component of our operating expenses. Accordingly, we believe it is significant to distinguish amortization expense and other non-cash expenses (principally depreciation) from other operating expenses since these expenses do not require the use of cash. We have provided additional supplemental information in this report for "cash" related earnings as an addition to, but not as a substitute for, measures of financial performance under generally accepted accounting principles, and our calculations may not be consistent with those of other companies. Our additional measures of "cash" related earnings are: o Cash Net Income (net income plus depreciation and amortization), which we believe is useful to investors as an indicator of funds available to the Company, which may be used to make new investments, repay debt obligations, repurchase shares of Common Stock or pay dividends on our Common Stock (although the Company has no current plans to pay dividends); o EBITDA (earnings before interest expense, income taxes, depreciation and amortization), which we believe is useful to investors as an indicator of our ability to service debt, make new investments and meet working capital requirements; and o EBITDA Contribution (EBITDA plus our holding company operating expenses), which we believe is useful to investors as an indicator of funds available from our Affiliates' operations to service debt, make new investments and meet working capital requirements. 10

Assets under management were $69.7 billion at March 31, 2001 versus $77.5 billion at December 31, 2000. The decrease in assets under management during the quarter resulted from the net loss of low-fee overlay assets of $1.4 billion, primarily from the loss of one overlay asset account, and a decline in the value of assets under management of $7.5 billion, resulting principally from a broad decline in the equity markets. These decreases were offset partially by positive net client cash flows of directly managed assets of $879.8 million and our minority investment in Dublin Fund Distributors, N.V. in March 2001 (approximately $200 million in assets under management at the time of investment). THE THREE MONTHS ENDED MARCH 31, 2001 AS COMPARED TO THE THREE MONTHS ENDED MARCH 31, 2000 We had net income of $11.9 million for the quarter ended March 31, 2001 compared to net income of $13.8 million for the quarter ended March 31, 2000. The decrease in net income resulted primarily from the decline in the EBITDA Contribution of our Affiliates, from $38.9 million for the quarter ended March 31, 2000 to $35.8 million for the quarter ended March 31, 2001. This decline resulted principally from the decrease in asset-based fees reflecting the impact of a broad equity market decline in the twelve-month period ended March 31, 2001, partially offset by increases in such fees resulting from positive net client cash flows of directly managed assets. Total revenues for the quarter ended March 31, 2001 were $100.5 million, a decrease of $14.3 million from the quarter ended March 31, 2000. As stated above with respect to EBITDA Contribution, this decline resulted principally from the decrease in asset-based fees reflecting the impact of a broad equity market decline in the twelve-month period ended March 31, 2001, partially offset by increases in such fees resulting from positive net client cash flows of directly managed assets. Total operating expenses decreased by $7.7 million to $63.2 million for the quarter ended March 31, 2001 from $70.9 million for the quarter ended March 31, 2000. Compensation and related expenses decreased by $10.2 million to $34.2 million. Amortization of intangible assets increased by $0.5 million to $6.9 million, selling, general and administrative expenses increased by $1.5 million to $18.1 million, and other operating expenses increased by $0.2 million to $2.6 million. The decrease in operating expenses was the result of a decrease in Affiliates' Operating Allocation, which was a result of the decline in revenues. Minority interest decreased by $3.5 million to $14.8 million for the quarter ended March 31, 2001 from $18.3 million for the quarter ended March 31, 2000, primarily as a result of the decrease in our Affiliates' Owners' Allocation, as a result of the decline in revenues. Interest expense decreased by $0.6 million to $3.2 million for the quarter ended March 31, 2001 from $3.8 million for the quarter ended March 31, 2000. The decrease in interest expense resulted from a decrease in LIBOR rates and a decrease in the weighted average debt outstanding under our revolving credit facility. The decrease in the weighted average debt outstanding under our credit facility is attributable to repayments of our senior bank debt from cash flows from ongoing operations, partially offset by borrowings for the repurchase of Common Stock. Income tax expense was $8.0 million for the quarter ended March 31, 2001 compared to $9.6 million for the quarter ended March 31, 2000. The change in tax expense was principally related to the decrease in income before taxes. EBITDA decreased by $3.4 million to $31.3 million for the quarter ended March 31, 2001 from $34.7 million for the quarter ended March 31, 2000, primarily as a result of the decline in revenues. Cash Net Income decreased by $1.0 million to $20.2 million for the quarter ended March 31, 2001 from $21.2 million for the quarter ended March 31, 2000, as a result of the factors affecting net income as described above, excluding the changes in depreciation and amortization during the period. LIQUIDITY AND CAPITAL RESOURCES We have met our cash requirements primarily through borrowings from our banks, cash generated by operating activities and the issuance of equity and convertible debt securities in public transactions. Our principal uses of cash have been to make investments, repay indebtedness, pay income taxes, repurchase shares, support our and our Affiliates' operating activities and for working capital purposes. We expect that our principal use of funds for the foreseeable future will be for additional investments, distributions to management owners of Affiliates, repayments of debt, including interest on outstanding debt, payment of income taxes, repurchase of shares, capital 11

expenditures, additional investments in existing Affiliates, including our purchase of management owners' retained equity, and for working capital purposes. At March 31, 2001, we had outstanding borrowings of senior debt under our revolving credit facility of $146.7 million and the ability to borrow an additional $183.3 million. We have the option, with the consent of our lenders, to increase the facility by another $70 million to a total of $400 million. Our outstanding senior debt balance as of March 31, 2001 decreased by 3% as compared to December 31, 2000 as a result of repayments from cash flows from ongoing operations and the impact of a cash management program with our Affiliates which commenced in 2000 and enabled us to access their excess cash through intercompany loans. At March 31, 2001, we had $36.3 million in such loans. Because these loans are intercompany balances, they are eliminated for accounting purposes and are not reflected on our consolidated balance sheet. Our borrowings under the revolving credit facility are collateralized by pledges of all of our interests in our affiliated investment management firms (including all interests which are directly held by us, as well as all interests which are indirectly held by us through wholly-owned subsidiaries), which interests represent substantially all of our assets. Our credit facility contains a number of negative covenants, including those which generally prevent us and our Affiliates from: (i) incurring additional indebtedness (other than subordinated indebtedness), (ii) creating any liens or encumbrances on material assets (with certain enumerated exceptions), (iii) selling assets outside the ordinary course of business or making certain fundamental changes with respect to our businesses, including a restriction on our ability to transfer interests in any majority owned Affiliate if, as a result of such transfer, we would own less than 51% of such firm, and (iv) declaring or paying dividends on our Common Stock. Our credit facility bears interest at either LIBOR plus a margin or the Prime Rate plus a margin. We pay a commitment fee on the daily unused portion of the facility. In order to partially offset our exposure to changing interest rates we have entered into interest rate hedging contracts, as discussed below in "Market Risk." The credit facility matures during December 2002. On May 7 and May 14, 2001, we completed private placements of zero-coupon convertible notes in which we realized net proceeds of approximately $221 million. In the placements, we sold a total of $251 million principal amount at maturity of zero-coupon convertible notes due 2021, with each $1,000 note issued at 90.495% of such principal amount and accreting at a rate of 0.50% per annum. Each security is convertible into 11.6195 shares of our Common Stock upon the occurrence of any of the following events: (i) if for certain periods in any calendar quarter, the closing sale price of our Common Stock is more than a specified price (initially $93.53 and increasing incrementally each calendar quarter for the next twenty years to $94.62 on April 1, 2021); (ii) if the credit rating assigned to the security is below a specified level; (iii) if we call the convertible securities for redemption; or (iv) in the event that we take certain corporate actions. We have the option to redeem the convertible notes for cash on or after May 7, 2006, and may be required to repurchase the securities at their accreted value at the option of the holders on May 7 of 2002, 2004, 2006, 2011 and 2016. The purchase price for such repurchases may be made in cash or shares of our Common Stock. As of May 14, 2001, we had used approximately $101 million of the proceeds to repay existing indebtedness, and intend to use the balance to repay additional indebtedness and for general corporate purposes. Giving effect to the repayment of existing indebtedness, at May 14, 2001 we had outstanding borrowings of senior debt under the revolving credit facility of $50 million and the ability to borrow an additional $280 million. During the quarter ended March 31, 2001, we repurchased 14,000 shares of Common Stock at an average price of $49.85, with borrowings under our revolving credit facility. The repurchases were pursuant to a share repurchase program authorized by our Board of Directors in April 2000. Under this program, we are authorized to repurchase up to five percent of our issued and outstanding shares of Common Stock in open market transactions, with the timing of purchases and the amount of stock purchased determined at our discretion. We have the authorization to repurchase an additional 656,781 shares of Common Stock under this program. In order to provide the funds necessary for us to continue to acquire interests in investment management firms, including in our existing Affiliates upon the sale by our Affiliates' owners of their retained equity to us, it will be necessary for us to incur, from time to time, additional long-term bank debt and/or issue equity or debt securities, depending on market and other conditions. There can be no assurance that such additional financing will be available on terms acceptable to us, if at all. MARKET RISK We use interest rate derivative contracts to manage market exposures associated with our variable rate debt 12

by creating offsetting market exposures. During February 2001, we became a party, with two major commercial banks as counterparties, to $50 million notional amount of interest rate swap contracts that are linked to the three-month LIBOR rate. Under these contracts, we have agreed to exchange the difference between fixed-rate and floating-rate interest amounts calculated by reference to the notional amount. These interest rate swap contracts are not held for trading purposes. In using these derivative instruments, we face certain risks that are not directly related to market movements and are therefore not easy to quantify, and as such are not represented in the analysis which follows. These risks include country risk, legal risk and credit risk. Credit risk, or the risk of loss arising from a counterparty's failure or inability to meet payment or performance terms of a contract, is a particularly significant element of an interest rate swap contract. We attempt to control this risk through analysis of our counterparties and ongoing examinations of outstanding payments and delinquencies. We have performed a sensitivity analysis assuming a hypothetical 10% adverse movement in LIBOR rates, sustained for three months. This analysis reflects the impact of such movement on the combination of our senior debt under our revolving credit facility and our interest rate derivative contracts, by multiplying the notional amount of the interest rate derivative contract by the effect of a 10% decrease in LIBOR rates, and then factoring in the offsetting interest rate savings on the underlying senior debt. As of May 14, 2001, this analysis indicated that this hypothetical movement in LIBOR rates would have resulted in a quarterly loss of approximately $70,000. There can be no assurance that we will continue to maintain such derivative contracts at their existing levels of coverage or that the amount of coverage maintained will cover all of our indebtedness outstanding at any such time. Therefore, there can be no assurance that the derivative contracts will meet their overall objective of reducing our interest expense. In addition, there can be no assurance that we will be successful in obtaining derivative contracts in the future on our existing or any new indebtedness. ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK For quantitative and qualitative disclosures about market risk affecting us, see "Management's Discussion and Analysis of Financial Condition and Results of Operations--Market Risk" in Item 2 above, which is incorporated herein by reference. PART II - OTHER INFORMATION ITEM 1. LEGAL PROCEEDINGS From time to time, we and our Affiliates may be parties to various claims, suits and complaints. Currently, there are no such claims, suits or complaints that, in the opinion of management, would have a material adverse effect on our financial position, liquidity or results of operations. ITEM 2. CHANGES IN SECURITIES During the three months ended March 31, 2001, we repurchased 14,000 shares of Common Stock under the 2000 Share Repurchase Program. ITEM 3. DEFAULTS UPON SENIOR SECURITIES None ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS None ITEM 5. OTHER INFORMATION None ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K (a) Exhibits 13

4.8 Liquid Yield Option Notes due May 7, 2021 (Zero Coupon-Senior) Purchase Agreement, Dated as of May 1, 2001, by and between Affiliated Managers Group, Inc. and Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated 4.9 Liquid Yield Option Notes due May 7, 2021 (Zero Coupon-Senior) Indenture, Dated as of May 7, 2001, First Union National Bank, Trustee 4.10 Liquid Yield Option Notes due May 7, 2021 (Zero Coupon-Senior) Registration Rights Agreement, Dated as of May 7, 2001, by and between Affiliated Managers Group, Inc. and Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated (b) Reports on Form 8-K: There were no Current Reports on Form 8-K filed by the Company during the quarter ended March 31, 2001. 14

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. AFFILIATED MANAGERS GROUP, INC. ---------------------------------- (Registrant) /s/ Darrell W. Crate on behalf of the Registrant as Senior Vice President, May 14, 2001 - -------------------- Chief Financial Officer and Treasurer (Darrell W. Crate) (and also as Principal Financial and Principal Accounting Officer) 15

Exhibit 4.8 ================================================================================ AFFILIATED MANAGERS GROUP, INC. (a Delaware corporation) Liquid Yield Option(TM) Notes Due May 7, 2021 (Zero Coupon - Senior) PURCHASE AGREEMENT Dated: As of May 1, 2001 ================================================================================ (TM) Trademark of Merrill Lynch & Co., Inc.

Table of Contents Page ---- SECTION 1. Representations and Warranties.....................................3 (a) Representations and Warranties by the Company......................3 (i) Offering Memorandum.......................................3 (ii) Incorporated Documents....................................3 (iii) Independent Accountants...................................3 (iv) Financial Statements......................................3 (v) No Material Adverse Change in Business....................4 (vi) Good Standing of the Company..............................4 (vii) Good Standing of Subsidiaries.............................4 (viii) Capitalization............................................5 (ix) Authorization of Agreement and the Registration Rights Agreement.................................................5 (x) Authorization of the Indenture............................5 (xi) Authorization of the Securities...........................5 (xii) Description of the Securities and the Indenture...........6 (xiii) Authorization and Description of Common Stock.............6 (xiv) Absence of Defaults and Conflicts.........................6 (xv) Absence of Labor Dispute..................................7 (xvi) Absence of Proceedings....................................7 (xvii) Accuracy of Exhibits......................................7 (xviii) Possession of Intellectual Property.......................7 (xix) Absence of Further Requirements...........................7 (xx) Possession of Licenses and Permits........................8 (xxi) Title to Property.........................................8 (xxii) Investment Company Act....................................8 (xxiii) Environmental Laws........................................8 (xxiv) No Integration............................................9 (xxv) Rule 144A.................................................9 (xxvi) No General Solicitation or General Advertising............9 (xxvii) No Registration Required..................................9 (xxviii) Adviser Activities and Broker-Dealer Business............10 (xxix) Compliance with Laws.....................................10 (xxx) Registration of Funds....................................11 (xxxi) Agreements...............................................11 (b) Officer's Certificates............................................12 SECTION 2. Sale and Delivery to Initial Purchaser; Closing...................12 (a) Initial Securities................................................12 (b) Option Securities.................................................12 (c) Payment...........................................................12 (d) Denominations; Registration.......................................13 (e) Qualification of Initial Purchaser................................13

SECTION 3. Covenants of the Company..........................................13 (a) Delivery of Offering Memorandum...................................13 (b) Filings; Material Changes.........................................13 (c) Amendments and Supplements........................................14 (d) Blue Sky Qualifications...........................................14 (e) Use of Proceeds...................................................14 (f) Restriction on Sale of Common Stock...............................15 (g) No Integration....................................................15 (h) Rule 144A Information.............................................15 (i) No Purchases......................................................15 (j) PORTAL............................................................15 (k) Reasonable Inquiries; Information.................................16 (l) Registration Rights Agreement; Trust Indenture Act................16 SECTION 4. Payment of Expenses...............................................16 (a) Expenses..........................................................16 (b) Termination of Agreement..........................................16 SECTION 5. Conditions of Initial Purchaser's Obligations.....................16 (a) Opinion of Counsel for Company....................................16 (b) Opinion of Counsel for Initial Purchaser..........................17 (c) Officers' Certificate.............................................17 (d) Accountant's Comfort Letter.......................................17 (e) Bring-down Comfort Letter.........................................17 (f) PORTAL Market.....................................................17 (g) Maintenance of Rating.............................................18 (h) Lock-up Agreements................................................18 (i) Indenture and Registration Rights Agreement.......................18 (j) Conditions to Purchase of Option Securities.......................18 (i) Officers' Certificate.......................................18 (ii) Opinion of Counsel for Company..............................18 (iii) Opinion of Counsel for Initial Purchaser....................18 (iv) Bring-down Comfort Letter...................................19 (v) No Downgrading..............................................19 (k) Additional Documents..............................................19 (l) Termination of Agreement..........................................19 SECTION 6. Subsequent Offers and Resales of the Securities...................19 SECTION 7. Indemnification...................................................20 (a) Indemnification of Initial Purchaser..............................20 SECTION 8. Contribution......................................................22 ii

SECTION 9. Termination of Agreement..........................................24 (a) Termination; General..............................................24 (b) Liabilities.......................................................24 SECTION 10. Notices...........................................................24 SECTION 11. Parties...........................................................24 SECTION 12. GOVERNING LAW AND TIME............................................25 SECTION 13. Effect of Headings................................................25 iii

AFFILIATED MANAGERS GROUP, INC. (a Delaware corporation) $195,000,000 Liquid Yield Option(TM) Notes Due May 7, 2021 (Zero Coupon - Senior) PURCHASE AGREEMENT As of May 1, 2001 MERRILL LYNCH & CO. Merrill Lynch, Pierce, Fenner & Smith Incorporated North Tower World Financial Center New York, New York 10281-1209 Ladies and Gentlemen: Affiliated Managers Group, Inc., a Delaware corporation (the "Company"), confirms its agreement with Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated (the "Initial Purchaser"), with respect to the issue and sale by the Company and the purchase by the Initial Purchaser, of $195,000,000 aggregate principal amount at maturity of the Company's Liquid Yield OptionTM Notes Due May 7, 2021 (Zero Coupon - Senior) (the "LYONs"), and with respect to the grant by the Company to the Initial Purchaser of the option described in Section 2(b) hereof to purchase all or any part of an additional $56,000,000 aggregate principal amount at maturity of LYONs to cover over-allotments, if any. The aforesaid $195,000,000 aggregate principal amount at maturity of LYONs (the "Initial Securities") to be purchased by the Initial Purchaser and all or any part of the $56,000,000 aggregate principal amount at maturity of LYONs subject to the option described in Section 2(b) hereof (the "Option Securities") are hereinafter called, collectively, the "Securities." The Securities are to be issued pursuant to a senior indenture, to be dated as of May 7, 2001 (the "Indenture"), between the Company and First Union National Bank, as trustee (the "Trustee"). The Securities are convertible at the option of the holder at any time on or prior to maturity (unless previously redeemed or otherwise purchased) into shares of common stock, par - ---------- (TM) Trademark of Merrill Lynch & Co., Inc.

value $0.01 per share, of the Company (the "Common Stock") in accordance with the terms of the Securities and the Indenture, at the initial conversion rate of 11.6195 shares of Common Stock per LYON. Securities issued in book-entry form will be issued to Cede & Co. as nominee of The Depository Trust Company ("DTC") pursuant to a letter agreement, to be dated as of the Closing Time (as defined in Section 2(c)), among the Company, the Trustee and DTC. The Company understands that the Initial Purchaser proposes to make an offering of the Securities on the terms and in the manner set forth herein and agrees that the Initial Purchaser may resell, subject to the conditions set forth herein, all or a portion of the Securities to purchasers ("Subsequent Purchasers") at any time after the date of this Agreement. The Securities are to be sold to the Initial Purchaser and offered and resold by the Initial Purchaser without being registered under the Securities Act of 1933, as amended (the "1933 Act"), in reliance upon exemptions therefrom. Pursuant to the terms of the Securities and the Indenture, investors that acquire Securities may only resell or otherwise transfer such Securities if such Securities are hereafter registered under the 1933 Act or pursuant to an available exemption from the registration requirements of the 1933 Act (including the exemption afforded by Rule 144A ("Rule 144A") of the rules and regulations promulgated under the 1933 Act by the Securities and Exchange Commission (the "Commission")). On or prior to the Closing Time, the Company will enter into with the Initial Purchaser an agreement (the "Registration Rights Agreement") pursuant to which, subject to the conditions set forth therein, the Company is required to file and use its reasonable efforts to have declared effective a registration statement under the 1933 Act to register resales of the LYONs and the shares of Common Stock issuable upon conversion thereof. The Company has prepared and delivered to the Initial Purchaser copies of a preliminary offering memorandum (the "Preliminary Offering Memorandum") and has prepared and will deliver to the Initial Purchaser, on the date hereof, copies of a final offering memorandum dated May 1, 2001 (the "Final Offering Memorandum"), each to be used by the Initial Purchaser in connection with its solicitation of purchases of, or offering of, the Securities. "Offering Memorandum" means, with respect to any date or time referred to in this Agreement, the most recent offering memorandum (whether the Preliminary Offering Memorandum or the Final Offering Memorandum, or any amendment or supplement to either such document), including exhibits thereto and any documents incorporated therein by reference, which has been prepared and delivered by the Company to the Initial Purchaser in connection with its solicitation of purchases of, or offering of, the Securities. All references in this Agreement to financial statements and schedules and other information which is "contained," "included," "stated" or "described" in the Offering Memorandum shall be deemed to mean and include all such financial statements and schedules and other information which are expressly incorporated by reference in the Offering Memorandum; and all references in this Agreement to amendments or supplements to the Offering Memorandum shall be deemed to mean and include the filing of any document under the Securities Exchange Act of 1934 (the "1934 Act") which are expressly incorporated by reference in the Offering Memorandum. 2

SECTION 1. Representations and Warranties. (a) Representations and Warranties by the Company. The Company represents and warrants to the Initial Purchaser as of the date hereof, as of the Closing Time referred to in Section 2(c) hereof, and as of each Date of Delivery (if any) referred to in Section 2(b) hereof, and agrees with the Initial Purchaser, as follows: (i) Offering Memorandum. The Offering Memorandum does not, and at the Closing Time referred to in Section 2 (and, if any Option Securities are purchased, at the Date of Delivery) will not, include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. The representations and warranties in this subsection shall not apply to statements in or omissions from the Offering Memorandum made in reliance upon and in conformity with information furnished to the Company in writing by the Initial Purchaser expressly for use in the Offering Memorandum. (ii) Incorporated Documents. The documents incorporated by reference in the Offering Memorandum (the "Incorporated Documents"), at the time they were or hereafter are filed with the Commission, complied and will comply in all material respects with the requirements of the 1934 Act and the rules and regulations of the Commission thereunder (the "1934 Act Regulations"), and, when read together with the other information in the Offering Memorandum, at the date of the Offering Memorandum and at the Closing Time (and if any Option Securities are purchased, at the Date of Delivery), did not and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading. (iii) Independent Accountants. The accountants who certified the financial statements and supporting schedules included in the Offering Memorandum are independent public accountants as required by the 1933 Act and the regulations of the Commission thereunder (the "1933 Act Regulations"). (iv) Financial Statements. The financial statements included in or incorporated into the Offering Memorandum, together with the related schedules and notes, present fairly the financial position of the Company and its consolidated subsidiaries at the dates indicated and the statement of operations, stockholders' equity and cash flows of the Company and its consolidated subsidiaries for the periods specified; said financial statements have been prepared in conformity with generally accepted accounting principles ("GAAP") applied on a consistent basis throughout the periods involved, except as stated therein. The supporting schedules incorporated by reference in the Offering Memorandum present fairly in accordance with GAAP the information required to be stated in the Incorporated Documents. The selected financial data and the summary financial information included in the Offering Memorandum present fairly the 3

information shown therein and have been compiled on a basis consistent in all material respects with that of the audited financial statements included in or incorporated by reference in the Offering Memorandum. (v) No Material Adverse Change in Business. Since the respective dates as of which information is given in the Offering Memorandum, except as otherwise stated therein, (A) there has been no material adverse change or prospective material adverse change in the business, management, financial position, stockholders equity or results of operations of the Company and its subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business (a "Material Adverse Effect"), and (B) there have been no transactions entered into by the Company or any of its subsidiaries, other than those in the ordinary course of business, which are material with respect to the Company and its subsidiaries considered as one enterprise, and there has been no dividend or distribution of any kind declared, paid or made by the Company on any class of its capital stock. (vi) Good Standing of the Company. The Company has been duly organized and is validly existing as a corporation in good standing under the laws of the State of Delaware and has corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Offering Memorandum and to enter into and perform its obligations under, or as contemplated by, this Agreement. The Company is duly qualified as a foreign corporation to transact business and is in good standing in each other jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure so to qualify or to be in good standing would not result in a Material Adverse Effect. (vii) Good Standing of Subsidiaries. Each subsidiary of the Company has been duly organized or formed and is validly existing as a corporation, limited partnership, limited liability company, Massachusetts business trust or general partnership, as the case may be, under the laws of its jurisdiction of organization and is in good standing under the laws of its jurisdiction of organization, has power (corporate or otherwise) and authority to own, lease and operate its properties and to conduct its business as described in the Offering Memorandum or in the Incorporated Documents and is duly qualified as a foreign corporation, limited partnership, limited liability company, Massachusetts business trust or general partnership, as the case may be, to transact business and is in good standing in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure to so qualify or to be in good standing would not result in a Material Adverse Effect. Except as otherwise disclosed in the Offering Memorandum or in the Incorporated Documents, all of the issued shares of capital stock of each subsidiary of the Company which is a corporation, have been duly authorized and validly issued, and are fully paid and non-assessable, and (except for directors' qualifying shares and as described generally in the Offering Memorandum and in the Incorporated Documents) are owned directly or indirectly by the Company, free and clear of all liens, 4

encumbrances, equities or claims, in each case with such exceptions, individually or in the aggregate, as would not have a Material Adverse Effect. The partnership interests, membership interests and shares of beneficial interest of each subsidiary of the Company which is a partnership, limited liability company or Massachusetts business trust have been validly issued in accordance with applicable law and the partnership agreement, limited liability agreement or declaration of trust, as applicable, of such subsidiary, and (except as described generally in the Offering Memorandum or in the Incorporated Documents) are owned directly or indirectly by the Company, free and clear of all liens, encumbrances, equities or claims, except, in the case of each subsidiary of the Company, for liens, encumbrances, equities or claims which individually or in the aggregate would not be material to the Company's ownership of such subsidiary or to the Company's exercise of its rights with respect to such subsidiary; and none of the outstanding shares of capital stock, partnership interests, membership interests or shares of beneficial interests, as the case may be, of any subsidiary was issued in violation of the preemptive or similar rights of any securityholder of such subsidiary. (viii) Capitalization. The authorized, issued and outstanding shares of capital stock of the Company are as set forth in the Offering Memorandum in the column entitled "Actual" under the caption "Capitalization" (except for subsequent issuances, if any, pursuant to this Agreement, pursuant to reservations, agreements or employee benefit plans referred to in the Offering Memorandum or in the Incorporated Documents or pursuant to the exercise of convertible securities or options referred to in the Offering Memorandum or in the Incorporated Documents). The shares of issued and outstanding capital stock of the Company have been duly authorized and validly issued and are fully paid and non-assessable; none of the outstanding shares of capital stock of the Company was issued in violation of the preemptive or other similar rights of any securityholder of the Company. (ix) Authorization of Agreement and the Registration Rights Agreement. This Agreement has been, and at or prior to the Closing Time, the Registration Rights Agreement will have been, duly authorized, executed and delivered by the Company. (x) Authorization of the Indenture. The Indenture has been duly authorized by the Company and, when duly executed and delivered by the Company and the Trustee, will constitute a valid and binding agreement of the Company, enforceable against the Company in accordance with its terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting creditors' rights generally or by general equitable principles. (xi) Authorization of the Securities. The Securities have been duly authorized and, at the Closing Time, will have been duly executed by the Company and, when authenticated, issued and delivered in the manner provided for in the Indenture and delivered against payment of the purchase price therefor as provided in this Agreement, will constitute valid and binding obligations of the Company, enforceable against the 5

Company in accordance with their terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting creditors' rights generally or by general equitable principles. (xii) Description of the Securities and the Indenture. The description of the Securities and the Indenture set forth in the Offering Memorandum is correct in all material respects. (xiii) Authorization and Description of Common Stock. The Common Stock conforms to all statements relating thereto incorporated by reference in the Offering Memorandum, and such description conforms in all material respects to the rights set forth in the instruments defining the same. Upon issuance and delivery of the Securities in accordance with this Agreement and the Indenture, the Securities will be convertible at the option of the holder thereof for shares of Common Stock in accordance with the terms of the Securities and the Indenture; the shares of Common Stock issuable upon conversion of the Securities have been duly authorized and reserved for issuance upon such conversion by all necessary corporate action and such shares, when issued upon such conversion, will be validly issued and will be fully paid and non-assessable; and the issuance of such shares upon such conversion will not be subject to the preemptive or other similar rights of any securityholder of the Company. (xiv) Absence of Defaults and Conflicts. Neither the Company nor any of its subsidiaries is in violation of its charter or by-laws or other constituting or organizational document or in default in the performance or observance of any obligation, agreement, covenant or condition contained in any contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which it or any of them may be bound, or to which any of the property or assets of the Company or any subsidiary is subject (collectively, "Agreements and Instruments") except for such defaults that would not result in a Material Adverse Effect; and the execution, delivery and performance of this Agreement, the Registration Rights Agreement, the Indenture and the Securities and the consummation of the transactions contemplated herein and in the Offering Memorandum (including the issuance and sale of the Securities and the use of the proceeds from the sale of the Securities as described in the Offering Memorandum under the caption "Use of Proceeds" and the issuance of the shares of Common Stock issuable upon conversion of the Securities) and compliance by the Company with its obligations hereunder, and under the Indenture, the Registration Rights Agreement and the Securities, have been duly authorized by all necessary corporate action and do not, whether with or without the giving of notice or passage of time or both, conflict with or constitute a breach of, or default or Repayment Event (as defined below) under, or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any subsidiary pursuant to, the Agreements and Instruments (except for such conflicts, breaches or defaults or liens, charges or encumbrances that would not result in a Material Adverse Effect), nor will such action result in any violation of the provisions of 6

the charter or by-laws or other constituting or organizational instrument as in effect on the date hereof of the Company or any subsidiary or any applicable law, statute, rule, regulation, judgment, order, writ or decree of any government, government instrumentality or court, domestic or foreign, having jurisdiction over the Company or any subsidiary or any of their assets, properties or operations, except for any such violation of any applicable law, statute, rule, regulation, judgment, order, writ or decree of law which would not result in a Material Adverse Effect. As used herein, a "Repayment Event" means any event or condition which gives the holder of any note, debenture or other evidence of indebtedness (or any person acting on such holder's behalf) the right to require the repurchase, redemption or repayment of all or a portion of such indebtedness by the Company or any subsidiary. (xv) Absence of Labor Dispute. No labor dispute with the employees of the Company or any subsidiary exists or, to the knowledge of the Company, is imminent. (xvi) Absence of Proceedings. Except as disclosed in the Offering Memorandum or in the Incorporated Documents, there is no action, suit, proceeding, inquiry or investigation before or brought by any court or governmental agency or body, domestic or foreign, now pending, or, to the knowledge of the Company, threatened, against or affecting the Company or any subsidiary, which, singly or in the aggregate, would reasonably be expected to result in a Material Adverse Effect, or which would reasonably be expected to materially and adversely affect the consummation of the transactions contemplated in this Agreement or the performance by the Company of its obligations hereunder. (xvii) Accuracy of Exhibits. All of the descriptions of contracts or other documents contained or incorporated by reference in the Offering Memorandum are accurate and complete descriptions in all material respects of such contracts or other documents. (xviii) Possession of Intellectual Property. The Company and its subsidiaries own or possess the intellectual property necessary to carry on the business now operated by them, and neither the Company nor, to the best of the Company's knowledge, any of its subsidiaries has received any notice or is otherwise aware of any infringement of or conflict with asserted rights of others with respect to any such intellectual property or of any facts or circumstances which would render any such intellectual property invalid or inadequate to protect the interest of the Company or any of its subsidiaries therein, and which infringement or conflict (if the subject of any unfavorable decision, ruling or finding) or invalidity or inadequacy, singly or in the aggregate, would result in a Material Adverse Effect. (xix) Absence of Further Requirements. No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any court or governmental authority or agency is necessary or required for the performance by the 7

Company of its obligations hereunder or under the Registration Rights Agreement or the Indenture, in connection with the offering, issuance or sale of the Securities hereunder, the issuance of shares of Common Stock upon conversion of Securities or the consummation of the transactions contemplated by this Agreement, or for the due execution, delivery or performance of the Agreement, the Registration Rights Agreement or the Indenture, except such as have been already obtained or as may be required under the 1933 Act or the 1933 Act Regulations in connection with the transactions contemplated by the Registration Rights Agreement or state securities laws and except for the qualification of the Indenture under the 1939 Act. (xx) Possession of Licenses and Permits. The Company and its subsidiaries possess such permits, licenses, approvals, consents and other authorizations (collectively, "Governmental Licenses") issued by the appropriate federal, state, local or foreign regulatory agencies or bodies necessary to conduct the business now operated by them; the Company and its subsidiaries are in compliance with the terms and conditions of all such Governmental Licenses, except in any such case where the failure to so possess or to comply would not, singly or in the aggregate, have a Material Adverse Effect; all of the Governmental Licenses are valid and in full force and effect, except where the invalidity of such Governmental Licenses or the failure of such Governmental Licenses to be in full force and effect would not have a Material Adverse Effect; and neither the Company nor any of its subsidiaries has received any notice of proceedings relating to the revocation or modification of any such Governmental Licenses which, singly or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would result in a Material Adverse Effect. (xxi) Title to Property. The Company and its subsidiaries have good and marketable title to all real property owned by the Company and its subsidiaries and good title to all other properties owned by them, in each case, free and clear of all mortgages, pledges, liens, security interests, claims, restrictions or encumbrances of any kind except such as (a) are described in the Offering Memorandum or (b) would not, singly or in the aggregate, result in a Material Adverse Effect; and all of the leases and subleases material to the business of the Company and its subsidiaries, considered as one enterprise, and under which the Company or any of its subsidiaries holds properties described in the Offering Memorandum or in the Incorporated Documents, are in full force and effect, and neither the Company nor any subsidiary has any notice of any material claim of any sort that has been asserted by anyone adverse to the rights of the Company or any subsidiary under any of the leases or subleases mentioned above, or affecting or questioning the rights of the Company or such subsidiary to the continued possession of the leased or subleased premises under any such lease or sublease. (xxii) Investment Company Act. Neither the Company nor any of its subsidiaries are, and upon the issuance and sale of the Securities as herein contemplated and the application of the net proceeds therefrom as described in the Offering Memorandum will be, an "investment company" or an entity "controlled" by an 8

"investment company" as such terms are defined in the Investment Company Act of 1940, as amended (the "1940 Act"). (xxiii) Environmental Laws. Except as described in the Offering Memorandum or in the Incorporated Documents and except as would not, singly or in the aggregate, result in a Material Adverse Effect, (A) neither the Company nor any of its subsidiaries is in violation of any federal, state, local or foreign statute, law, rule, regulation, ordinance, code, policy or rule of common law or any judicial or administrative interpretation thereof, including any judicial or administrative order, consent, decree or judgment, relating to pollution or protection of human health, the environment (including, without limitation, ambient air, surface water, groundwater, land surface or subsurface strata) or wildlife, including, without limitation, laws and regulations relating to the release or threatened release of chemicals, pollutants, contaminants, wastes, toxic substances, hazardous substances, petroleum or petroleum products (collectively, "Hazardous Materials") or to the manufacture, processing, distribution, use, treatment, storage, disposal, transport or handling of Hazardous Materials (collectively, "Environmental Laws"), (B) the Company and its subsidiaries have all permits, authorizations and approvals required under any applicable Environmental Laws and are each in compliance with their requirements, (C) there are no pending or, to the best knowledge of the Company, threatened administrative, regulatory or judicial actions, suits, demands, demand letters, claims, liens, notices of noncompliance or violation, investigation or proceedings relating to any Environmental Law against the Company or any of its subsidiaries, and (D) to the best knowledge of the Company, there are no events or circumstances that might reasonably be expected to form the basis of an order for clean-up or remediation, or an action, suit or proceeding by any private party or governmental body or agency, against or affecting the Company or any of its subsidiaries relating to Hazardous Materials or the violation of any Environmental Laws. (xxiv) No Integration. The Company has not, directly or indirectly, solicited any offer to buy or offered to sell, and will not, directly or indirectly, solicit any offer to buy or offer to sell, in the United States or to any United States citizen or resident, any security which is or would be integrated with the sale of the Securities in a manner that would require the Securities to be registered under the 1933 Act. (xxv) Rule 144A. The Securities are eligible for resale pursuant to Rule 144A and will not for purposes of Rule 144A(d)(3)(i) be, at the Closing Time, of the same class as securities listed on a national securities exchange registered under Section 6 of the 1934 Act, or quoted in a U.S. automated interdealer quotation system. (xxvi) No General Solicitation or General Advertising. None of the Company, its affiliates (as defined in Rule 501(b) under the 1933 Act) or any person (other than the Initial Purchaser and its respective affiliates, as to whom the Company makes no representation) acting on its behalf has or shall offer or sell the Securities by any form of general solicitation or general advertising within the meaning of Rule 502(c) under 9

Regulation D of the 1933 Act. (xxvii) No Registration Required. Subject to compliance by the Initial Purchaser with the representations and warranties set forth in Section 2 and the procedures set forth in Section 6 hereof, the compliance of the Initial Purchaser with the offering and transfer procedures and restrictions described in the Offering Memorandum, the accuracy of the representations and warranties made in accordance with the Purchase Agreement and the Offering Memorandum by purchasers to whom the Initial Purchaser initially resells LYONs and the condition that Subsequent Purchasers receive a copy of the Offering Memorandum prior to such sale, it is not necessary in connection with the offer, sale and delivery of the Securities to the Initial Purchaser and to each Subsequent Purchaser in the manner contemplated by this Agreement and the Offering Memorandum to register the Securities under the 1933 Act or to qualify the Indenture under the Trust Indenture Act of 1939, as amended (the "1939 Act"). (xxviii) Adviser Activities and Broker-Dealer Business. The Company is not required to register as an "investment adviser" or as a "broker-dealer" within the Investment Advisers Act of 1940, as amended (the "Advisers Act") or the 1934 Act, respectively, and the rules and regulations of the Commission promulgated thereunder. The Company is not required to be registered, licensed or qualified as an investment adviser or broker-dealer under the laws requiring any such registration, licensing or qualification in any jurisdiction in which it or its subsidiaries conduct business. Each of the subsidiaries has been duly registered as an investment adviser under the Advisers Act, and has been duly registered as a broker-dealer under the 1934 Act, and each such registration is in full force and effect, in each case to the extent such registration is required and with such exceptions as would not reasonably be expected to have a Material Adverse Effect. Each of the subsidiaries is duly registered, licensed or qualified as an investment adviser and broker-dealer under state and local laws where such registration, licensing or qualification is required by such laws and is in compliance with all such laws requiring any such registration, licensing or qualification, in each case with such exceptions, individually or in the aggregate, as would not reasonably be expected to have a Material Adverse Effect. (xxix) Compliance with Laws. Each of the subsidiaries which is required to be registered as an investment adviser or broker-dealer is and has been in compliance with all applicable laws and governmental rules and regulations, as may be applicable to its investment advisory or broker-dealer business, except to the extent that such non-compliance would not reasonably be expected to result in a Material Adverse Effect and none of such subsidiaries is prohibited by any provision of the Advisers Act or the 1940 Act from acting as an investment adviser. Each subsidiary of the Company which is required to be registered as a broker-dealer is a member in good standing of the National Association of Securities Dealers, Inc. No subsidiary which is required to be registered as an investment adviser or broker-dealer is in default with respect to any judgment, 10

order, writ, injunction, decree, demand or assessment issued by any court or any foreign, federal, state, municipal or other governmental agency, board, commission, bureau, instrumentality or department, domestic or foreign, or by any self-regulatory authority relating to any aspect of its investment advisory or broker-dealer business, which would need to be disclosed pursuant to Rule 206(4)-4(b) under the Advisers Act, or which is reasonably likely to give rise to an affirmative answer to any of the questions in Item 11, Part 1 of the Form ADV of such registered investment adviser or which is reasonably likely to give rise to an affirmative answer to any of the questions in Item 7 of the Form BD of such broker-dealer. (xxx) Registration of Funds. Each mutual fund (the "Mutual Funds") has been since inception, is currently and will be immediately after consummation of the transactions contemplated herein, a duly registered investment company in compliance with the Investment Company Act of 1940, as amended (the "Investment Company Act"), and the rules and regulations promulgated thereunder and duly registered or licensed, except where any failure to be duly registered, individually or in the aggregate, would not reasonably be expected to result in a Material Adverse Effect. Since their initial offering, shares of each of the Mutual Funds have been duly qualified for sale under the securities laws of each jurisdiction in which they have been sold or offered for sale at such time or times during which such qualification was required, and, if not so qualified, the failure to so qualify would not reasonably be expected to have a Material Adverse Effect. The offering and sale of shares of each of the Mutual Funds have been registered under the 1933 Act during such period or periods for which such registration is required; the related registration statement has become effective under the 1933 Act; no stop order suspending the effectiveness of any such registration statement has been issued and no proceedings for that purpose have been instituted or, to the best knowledge of the Company, are contemplated. The registration statement of each Mutual Fund, together with the amendments and supplements thereto, under the Investment Company Act and the 1933 Act has, at all times when such registration statement was effective, complied in all material respects with the requirements of the Investment Company Act and the Securities Act then in effect and neither such registration statement nor any amendments or supplements thereto contained, at the time and in light of the circumstances in which they were made, an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein, at the time and in the light of the circumstances under which they were made, not misleading. All shares of each of the Mutual Funds were sold pursuant to an effective registration statement, or pursuant to a valid exemption from registration, and have been duly authorized and are validly issued, fully paid and non-assessable. Each of the Mutual Funds' investments has been made in accordance with its investment policies and restrictions set forth in its registration statement in effect at the time the investments were made and have been held in accordance with its respective investment policies and restrictions, to the extent applicable and in effect at the time such investments were held, except to the extent any failure to comply with such policies and restrictions, individually or in the aggregate, would not reasonably be expected to result in a Material Adverse Effect. 11

(xxxi) Agreements. The Company is not party to any investment advisory agreement or distribution agreement and is not serving or acting as an investment adviser to any person. Each of the investment advisory agreements to which any of the subsidiaries is a party is a legal and valid obligation of such subsidiary and complies with the applicable requirements of the Advisers Act and the rules and regulations of the Commission thereunder. Each of the investment advisory agreements and distribution agreements between a subsidiary and a Mutual Fund is a legal and valid obligation of such subsidiary and complies with the applicable requirements of the Investment Company Act, and in the case of such distribution agreements, with the applicable requirements of the 1934 Act. No investment advisory agreement or distribution agreement to which any of the subsidiaries is a party that was either in effect on January 1, 2001 or entered into by a subsidiary since January 1, 2001 has been terminated or expired, except where the failure to so comply or any such termination or expiration would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect. None of such subsidiaries is in breach or violation of or in default under any such investment advisory agreement or distribution agreement, with such exceptions individually or in the aggregate as would not reasonably be expected to have a Material Adverse Effect. No subsidiary is serving or acting as an investment adviser to any person except pursuant to an agreement to which such subsidiary is a party and which is in full force and effect, other than any agreement the non-existence of which would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect. The consummation of the transaction contemplated herein will not constitute an "assignment" as such term is defined in the Advisers Act and the 1934 Act. (b) Officer's Certificates. Any certificate signed by any officer of the Company delivered to the Initial Purchaser or to counsel for the Initial Purchaser shall be deemed a representation and warranty by the Company to the Initial Purchaser as to the matters covered thereby. SECTION 2. Sale and Delivery to Initial Purchaser; Closing. (a) Initial Securities. On the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company agrees to sell to the Initial Purchaser, and the Initial Purchaser agrees to purchase from the Company, at the price set forth in Schedule A, $195,000,000 in aggregate principal amount at maturity of Initial Securities. (b) Option Securities. In addition, on the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company hereby grants an option to the Initial Purchaser to purchase up to an additional $56,000,000 aggregate principal amount at maturity of Securities at the same price per share set forth in Schedule A for the Initial Securities, plus accreted original issue discount, if any, from the Closing Time to the Date of Delivery (as defined below). The option hereby granted will expire 30 days after the date hereof and may be exercised in whole or in part from time to time only for the purpose of 12

covering over-allotments which may be made in connection with the offering and distribution of the Initial Securities upon notice by the Initial Purchaser to the Company setting forth the number of Option Securities as to which the Initial Purchaser is then exercising the option and the time and date of payment and delivery for such Option Securities. Any such time and date of delivery (a "Date of Delivery") shall be determined by the Initial Purchaser, but shall not be later than seven full business days after the exercise of said option, nor in any event prior to the Closing Time, as hereinafter defined. (c) Payment. Payment of the purchase price for, and delivery of certificates for, the Initial Securities shall be made at the offices of Sidley Austin Brown & Wood LLP, One World Trade Center, New York, New York 10048, or at such other place as shall be agreed upon by the Initial Purchaser and the Company, at 10:00 A.M. (Eastern time) on the third (fourth, if the pricing occurs after 4:30 P.M. (Eastern time) on any given day) business day after the date hereof (unless postponed in accordance with the provisions of Section 10), or such other time not later than ten business days after such date as shall be agreed upon by the Initial Purchaser and the Company (such time and date of payment and delivery being herein called "Closing Time"). In addition, in the event that any or all of the Option Securities are purchased by the Initial Purchaser, payment of the purchase price for, and delivery of certificates for, such Option Securities shall be made at the above-mentioned offices, or at such other place as shall be agreed upon by the Initial Purchaser and the Company, on each Date of Delivery as specified in the notice from the Initial Purchaser to the Company. Payment shall be made to the Company by wire transfer of immediately available funds to a bank account designated by the Company, against delivery to the Initial Purchaser of certificates for the Securities to be purchased by it. (d) Denominations; Registration. Certificates for the Initial Securities and the Option Securities, if any, shall be in such denominations ($1,000 or integral multiples thereof) and registered in such names as the Initial Purchaser may request in writing at least one full business day before the Closing Time or the relevant Date of Delivery, as the case may be. The certificates for the Initial Securities and the Option Securities, if any, will be made available for examination and packaging by the Initial Purchaser in The City of New York not later than 10:00 A.M. (Eastern time) on the business day prior to the Closing Time or the relevant Date of Delivery, as the case may be. (e) Qualification of Initial Purchaser. The Initial Purchaser hereby represents and warrants to, and agrees with, the Company that the Initial Purchaser (i) is a "qualified institutional buyer" within the meaning of Rule 144A under the 1933 Act (a "Qualified Institutional Buyer") and an "accredited investor" within the meaning of Regulation D under the 1933 Act (an "Accredited Investor"); (ii) has not and will not solicit offers for, or offer or sell the Securities by any form of general solicitation or general advertising within the meaning of Rule 502(c) under Regulation D under the 1933 Act; and (iii) will otherwise act in accordance with the terms and conditions set forth in this Agreement, including Section 6 hereof, and in the section 13

entitled "Transfer Restrictions" in the Offering Memorandum in connection with the placement of the Securities contemplated hereby. SECTION 3. Covenants of the Company. The Company covenants with the Initial Purchaser as follows: (a) Delivery of Offering Memorandum. The Company, as promptly as possible, will furnish to the Initial Purchaser, without charge, such number of copies of the Preliminary Offering Memorandum, the Final Offering Memorandum and any amendments and supplements thereto and any documents incorporated by reference therein as the Initial Purchaser may reasonably request. (b) Filings; Material Changes. The Company will immediately notify the Initial Purchaser, and confirm such notice in writing, of (x) any filing made by the Company of information relating to the offering of the Securities with any securities exchange or any other regulatory body in the United States or any other jurisdiction, and (y) prior to the completion of the placement of the Securities by the Initial Purchaser as evidenced by a notice from the Initial Purchaser to the Company, any material changes in or affecting the earnings, business affairs or business prospects of the Company and its subsidiaries which (i) make any statement in the Offering Memorandum false or misleading in any material respect or (ii) if not disclosed in the Offering Memorandum, would constitute a material omission therefrom. In such event, or if during such time any event shall occur as a result of which it is necessary, in the reasonable opinion of the Company, its counsel, the Initial Purchaser or counsel for the Initial Purchaser, to amend or supplement the Final Offering Memorandum in order that the Final Offering Memorandum not include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein not misleading in the light of the circumstances then existing, the Company will forthwith amend or supplement the Final Offering Memorandum by preparing and furnishing to the Initial Purchaser an amendment or amendments of, or a supplement or supplements to, the Final Offering Memorandum (in form and substance satisfactory in the reasonable opinion of counsel for the Initial Purchaser) so that, as so amended or supplemented, the Final Offering Memorandum will not include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances existing at the time it is delivered to a Subsequent Purchaser, not misleading. (c) Amendments and Supplements. The Company will advise the Initial Purchaser promptly of any proposal to amend or supplement the Offering Memorandum, will furnish the Initial Purchaser with copies of such amendment or supplement a reasonable amount of time prior thereto, and will not effect any such amendment or supplement to which the Initial Purchaser shall reasonably object. Neither the consent of the Initial Purchaser, nor the Initial Purchaser's delivery of any such amendment or supplement, shall constitute a waiver of any of the conditions set forth in Section 5 hereof. (d) Blue Sky Qualifications. The Company will use its reasonable efforts, in 14

cooperation with the Initial Purchaser, to qualify the Securities and the shares of Common Stock issuable upon conversion of Securities for offering and sale under the applicable securities laws of such states and other jurisdictions (domestic or foreign) as the Initial Purchaser may designate; provided, however, that the Company shall not be obligated to file any general consent to service of process or to qualify as a foreign corporation or as a dealer in securities in any jurisdiction in which it is not so qualified or to subject itself to taxation in respect of doing business in any jurisdiction in which it is not otherwise so subject. In each jurisdiction in which the Securities or such shares of Common Stock issuable upon conversion of the Securities have been so qualified, the Company will file such statements and reports as may be required by the laws of such jurisdiction to continue such qualification in effect for so long as may be required in connection with the distribution of the Securities. (e) Use of Proceeds. The Company will use the net proceeds received by it from the sale of the Securities in the manner indicated in the Offering Memorandum under "Use of Proceeds." (f) Restriction on Sale of Common Stock. During a period of 60 days after the date of the Offering Memorandum, the Company will not, without the prior written consent of Merrill Lynch, (i) offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant for the sale of, lend or otherwise dispose of or transfer any shares of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock or file any registration statement under the 1933 Act with respect to any of the foregoing or (ii) enter into any swap or any other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of the Common Stock, whether any such swap or transaction described in clause (i) or (ii) above is to be settled by delivery of Common Stock or such other securities, in cash or otherwise. The foregoing sentence shall not apply to (A) the Securities to be sold hereunder, (B) any shares of Common Stock issued by the Company pursuant to existing options, employee benefit agreements or incentive stock or director stock unit plans or (C) any shares of Common Stock or such other securities issued as consideration for investments in or acquisition of entities involved in the Adviser Activities or other financial services related businesses made by the Company or any subsidiary of the Company. (g) No Integration. The Company agrees that no future offer and sale of debt securities of the Company of any class will be made if, as a result of the doctrine of "integration" referred to in Rule 502 under the 1933 Act, such offer and sale would render invalid (for the purpose of (i) the sale of the Securities by the Company to the Initial Purchaser, (ii) the resale of the Securities by the Initial Purchaser to Subsequent Purchasers, or (iii) the resale of the Securities by such Subsequent Purchasers to others) the exemption from the registration requirements of the 1933 Act provided by Section 4(2) thereof or by Rule 144A. (h) Rule 144A Information. The Company agrees that, in order to render the Securities eligible for resale pursuant to Rule 144A under the 1933 Act, while any of the Securities are "restricted securities" within the meaning of the 1933 Act, to make available, upon 15

request, to any holder of Securities or prospective purchasers of Securities the information specified in Rule 144A(d)(4), unless the Company furnishes information to the Commission pursuant to Section 13 or 15(d) of the 1934 Act. (i) No Purchases. Until the expiration of two years after the original issuance of the Securities, the Company will not (directly or through a subsidiary), and will use its reasonable efforts to cause its "affiliates" (as such term is defined in Rule 144(a)(1) under the 1933 Act) not to, purchase or agree to purchase or otherwise acquire any Securities which are "restricted securities" (as such term is defined under Rule 144(a)(3) under the 1933 Act), whether as beneficial owner or otherwise (except as agent on behalf of and for the account of customers in the ordinary course of business as a securities broker in unsolicited broker's transactions) unless, immediately upon any such purchase, the Company or any such affiliate shall submit such Securities to the Trustee for cancellation. (j) PORTAL. The Company will use its reasonable efforts to permit the Securities to be designated as PORTAL securities in accordance with the rules and regulations adopted by the National Association of Securities Dealers, Inc. relating to the PORTAL Market. (k) Reasonable Inquiries; Information. In connection with the original distribution of the Securities, the Company agrees that, prior to any offer or resale of the Securities by the Initial Purchaser, the Initial Purchaser and counsel for the Initial Purchaser shall have the right to make reasonable inquiries into the business of the Company and its subsidiaries. The Company also agrees to provide each prospective Subsequent Purchaser of Securities who so requests information of the type specified in Rule 502(b)(2)(v) under the 1933 Act. (l) Registration Rights Agreement; Trust Indenture Act. The Company agrees that it will comply with all the terms and conditions of the Registration Rights Agreement, and that prior to any registration of the Securities pursuant to the Registration Rights Agreement, or at such earlier time as may be required by applicable law, that it will cause the Indenture to be qualified under the Trust Indenture Act of 1939. SECTION 4. Payment of Expenses. (a) Expenses. The Company will pay all expenses incident to the performance of its obligations under this Agreement, including (i) the printing of the Preliminary Offering Memorandum, the Final Offering Memorandum and of each amendment or supplement thereto, (ii) the printing or reproduction of this Agreement and the Indenture and relating documents, (iii) the preparation, issuance and delivery of the certificates for the Securities to the Initial Purchaser, (iv) the fees and disbursements of the Company's counsel and accountants, (v) the qualification of the Securities and the shares of Common Stock issuable upon conversion of the Securities under securities laws in accordance with the provisions of Section 3(d), including filing fees and the fees and disbursements of counsel for the Initial Purchaser in connection therewith and in connection with the preparation of the Blue Sky Survey, (vi) any fees of the National Association of Securities Dealers, Inc., (vii) the fees and expenses of the Trustee, including the fees and disbursements of counsel for the Trustee in connection with the Indenture, and (viii) any fees 16

payable in connection with the rating of the Securities. (b) Termination of Agreement. If this Agreement is terminated by the Initial Purchaser in accordance with the provisions of Section 5 or Section 9(a)(i) hereof, the Company shall reimburse the Initial Purchaser for all of its out-of-pocket expenses, including the reasonable fees and disbursements of counsel for the Initial Purchaser. SECTION 5. Conditions of Initial Purchaser's Obligations. The obligation of the Initial Purchaser to purchase the Securities hereunder is subject to the accuracy of the representations and warranties of the Company contained in Section 1 hereof or in certificates of any officer of the Company delivered pursuant to the provisions hereof, to the performance by the Company of its covenants and other obligations hereunder, and to the following further conditions: (a) Opinion of Counsel for Company. At the Closing Time, the Initial Purchaser shall have received the favorable opinion, dated as of Closing Time, of Goodwin Procter LLP, counsel for the Company, in form and substance satisfactory to the Initial Purchaser and counsel for the Initial Purchaser. In giving such opinion such counsel may rely, as to all matters governed by the laws of jurisdictions other than the law of the Commonwealth of Massachusetts, the federal law of the United States and the General Corporation Law of the State of Delaware, upon the opinions of counsel satisfactory to the Initial Purchaser. Such counsel may also state that, insofar as such opinion involves factual matters, they have relied, to the extent they deem proper, upon certificates of the officers of the Company and certificates of public officials. (b) Opinion of Counsel for Initial Purchaser. At the Closing Time, the Initial Purchaser shall have received the favorable opinion, satisfactory to the Initial Purchaser, dated as of Closing Time, of Sidley Austin Brown & Wood LLP, counsel for the Initial Purchaser. In giving such opinion such counsel may rely, as to all matters governed by the laws of jurisdictions other than the law of the State of New York, the federal law of the United States and the General Corporation Law of the State of Delaware, upon the opinions of counsel satisfactory to the Initial Purchaser. Such counsel may also state that, insofar as such opinion involves factual matters, they have relied, to the extent they deem proper, upon certificates of officers of the Company and certificates of public officials. (c) Officers' Certificate. At the Closing Time, there shall not have been, since the date hereof or since the respective dates as of which information is given in the Offering Memorandum, any material adverse change or prospective material adverse change in the business, management, financial position, stockholders' equity or results of operations of the Company and its subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business, and the Initial Purchaser shall have received a certificate of the President or a Vice President of the Company and of the chief financial or chief accounting officer of the Company, dated as of Closing Time, to the effect that (i) there has been no such material adverse change, (ii) the representations and warranties in Section 1(a) hereof are true and correct with the same force and effect as though expressly made at and as of Closing Time, and (iii) the Company has complied with all of the agreements entered into in connection with the transaction 17

contemplated herein and satisfied all conditions on its part to be performed or satisfied at or prior to Closing Time. (d) Accountant's Comfort Letter. At the time of the execution of this Agreement, the Initial Purchaser shall have received from PricewaterhouseCoopers LLP a letter dated such date, in form and substance satisfactory to the Initial Purchaser, containing statements and information of the type ordinarily included in accountants' "comfort letters" to initial purchasers with respect to the financial statements and certain financial information contained in the Offering Memorandum. (e) Bring-down Comfort Letter. At the Closing Time, the Initial Purchaser shall have received from PricewaterhouseCoopers LLP a letter, dated as of Closing Time, to the effect that they reaffirm the statements made in the letter furnished pursuant to subsection (d) of this Section, except that the specified date referred to shall be a date not more than three business days prior to the Closing Time. (f) PORTAL Market. At the Closing Time, the Securities and the Common Stock issuable upon conversion of the Securities shall have been designated PORTAL eligible securities in accordance with the rules and regulations of the National Association of Securities Dealers, Inc., subject to official notice of issuance. (g) Maintenance of Rating. At the Closing Time, the Securities shall be rated at least BBB- by Standard & Poor's Ratings Services, a division of The McGraw-Hill Companies, Inc. and the Company shall have delivered to the Initial Purchaser a letter dated the Closing Time, from such rating agency, or other evidence satisfactory to the Initial Purchaser, confirming that the Securities have such rating; and since the date of this Agreement, there shall not have occurred a downgrading in the rating assigned to the Securities or any of the Company's other debt securities by any "nationally recognized statistical rating agency," as that term is defined by the Commission for purposes of Rule 436(g)(2) under the 1933 Act, and no such organization shall have publicly announced that it has under surveillance or review its rating of the Securities or any of the Company's other debt securities. (h) Lock-up Agreements. At the date of this Agreement, the Initial Purchaser shall have received an agreement substantially in the form of Exhibit A hereto signed by the persons listed on Schedule B hereto. (i) Indenture and Registration Rights Agreement. At or prior to the Closing Time, the Company and the Trustee shall have executed and delivered the Indenture and the Company and the Initial Purchaser shall have executed and delivered the Registration Rights Agreement. (j) Conditions to Purchase of Option Securities. In the event that the Initial Purchaser exercises its option provided in Section 2(b) hereof to purchase all or any portion of the Option Securities, the representations and warranties of the Company contained herein and the statements in any certificates furnished by the Company or any subsidiary of the Company hereunder shall be true and correct as of each Date of 18

Delivery and, at the relevant Date of Delivery, the Initial Purchaser shall have received: (i) Officers' Certificate. A certificate, dated such Date of Delivery, of the President or a Vice President of the Company and of the chief financial or chief accounting officer of the Company confirming that the certificate delivered at the Closing Time pursuant to Section 5(c) hereof remains true and correct as of such Date of Delivery. (ii) Opinion of Counsel for Company. The favorable opinion of Goodwin Procter LLP, counsel for the Company, dated such Date of Delivery, relating to the Option Securities to be purchased on such Date of Delivery and otherwise to the same effect as the opinion required by Section 5(a) hereof. (iii) Opinion of Counsel for Initial Purchaser. The favorable opinion of Sidley Austin Brown & Wood LLP, counsel for the Initial Purchaser, dated such Date of Delivery, relating to the Option Securities to be purchased on such Date of Delivery and otherwise to the same effect as the opinion required by Section 5(b) hereof. (iv) Bring-down Comfort Letter. A letter from PricewaterhouseCoopers LLP, dated such Date of Delivery, substantially in the same form and substance as the letter furnished to the Initial Purchaser pursuant to Section 5(e) hereof, except that the "specified date" in the letter furnished pursuant to this paragraph shall be a date not more than five days prior to such Date of Delivery. (v) No Downgrading. Subsequent to the date of this Agreement, no downgrading shall have occurred in the rating accorded the Securities or of any of the Company's other securities by any "nationally recognized statistical rating organization", as that term is defined by the Commission for purposes of Rule 436(g)(2) under the 1933 Act, and no such organization shall have publicly announced that it has under surveillance or review its ratings of any of the Company's securities. (k) Additional Documents. At Closing Time and at each Date of Delivery, counsel for the Initial Purchaser shall have been furnished with such documents and opinions as they may reasonably require for the purpose of enabling them to pass upon the issuance and sale of the Securities as herein contemplated, or in order to evidence the accuracy of any of the representations or warranties, or the fulfillment of any of the conditions, herein contained; and all proceedings taken by the Company in connection with the issuance and sale of the Securities as herein contemplated shall be satisfactory in form and substance in the reasonable judgment of the Initial Purchaser and counsel for the Initial Purchaser. (l) Termination of Agreement. If any condition specified in this Section shall not have been fulfilled when and as required to be fulfilled, this Agreement, or, in the case of any condition to the purchase of Option Securities, on a Date of Delivery which is after the Closing Time, the obligations of the Initial Purchaser to purchase the relevant Option Securities, may be terminated by the Initial Purchaser by notice to the Company at any time at or prior to Closing 19

Time or such Date of Delivery, as the case may be, and such termination shall be without liability of any party to any other party except as provided in Section 4 and except that Sections 7 and 8 shall survive any such termination and remain in full force and effect. SECTION 6. Subsequent Offers and Resales of the Securities. (a) Each of the Initial Purchaser and the Company, as the case may be, hereby establish and agree to observe the following procedures in connection with the offer and sale by the Initial Purchaser of the Securities. (i) Offers and sales of the Securities will be made by the Initial Purchaser only to institutional investors that are reasonably believed to qualify as Qualified Institutional Buyers. (ii) The Securities will be offered by the Initial Purchaser only by approaching prospective Subsequent Purchasers on an individual basis. No general solicitation or general advertising (within the meaning of Rule 502(c) under the 1933 Act) will be used in connection with the offering of the Securities. (iii) In the case of a Subsequent Purchaser of a Security acting as a fiduciary for one or more third parties, in connection with an offer and sale to such purchaser pursuant to clause (i) above, each third party shall, in the judgment of the Initial Purchaser, be a Qualified Institutional Buyer. (iv) Until the completion of the placement of the Securities by the Initial Purchaser, the transfer restrictions and the other provisions set forth in Section 2.12 of the Indenture, including the legend required thereby, shall apply to the Securities except as otherwise agreed by the Company and the Initial Purchaser. Following the sale of the Securities by the Initial Purchaser to each Subsequent Purchaser pursuant to the terms hereof, the Initial Purchaser shall not be liable or responsible to the Company for any losses, damages or liabilities suffered or incurred by the Company, including any losses, damages or liabilities under the 1933 Act, arising from or relating to any subsequent resale or transfer of any Security, except to the extent caused by failure to deliver an amended or supplemented Offering Memorandum. (v) The Initial Purchaser will deliver at or prior to sale to each purchaser of the Securities from such Initial Purchaser, in connection with its original distribution of the Securities, a copy of the Final Offering Memorandum, as amended and supplemented at the date of such delivery. (vi) In connection with the original distribution of the Securities, the Company agrees that, prior to any offer or resale of the Securities by the Initial Purchaser, the Initial Purchaser and counsel for the Initial Purchaser shall have the right to make reasonable inquiries into the business of the Company and its subsidiaries. 20

(vii) The Initial Purchaser will promptly notify the Company in writing of the completion of the placement of the Securities by it. SECTION 7. Indemnification. (a) Indemnification of Initial Purchaser. The Company agrees to indemnify and hold harmless the Initial Purchaser and each person, if any, who controls the Initial Purchaser within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act to the extent and in the manner set forth in clauses (i), (ii) and (iii) below. (i) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, resulting from any untrue statement or alleged untrue statement of a material fact contained in any Preliminary Offering Memorandum or the Final Offering Memorandum (or any amendment or supplement thereto), or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; (ii) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, to the extent of the aggregate amount paid in settlement of any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or of any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission; provided that (subject to Section 7(d) below) any such settlement is effected with the written consent of the Company; and (iii) against any and all expense whatsoever, as incurred (including the reasonable fees and disbursements of counsel chosen by the Initial Purchaser), reasonably incurred in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission, to the extent that any such expense is not paid under (i) or (ii) above; provided, however, that this indemnity agreement shall not apply to (i) any loss, liability, claim, damage or expense to the extent arising out of any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with written information furnished to the Company by the Initial Purchaser expressly for use in the Offering Memorandum (or any amendment or supplement thereto) and (ii) any loss, liability, claim, damage or expense to the extent arising out of any untrue statement or omission or alleged untrue statement or omission in the Preliminary Offering Memorandum that is correct in the Final Offering Memorandum if the person asserting any such loss, liability, claim, damage or expense purchased any of the Securities from the Initial Purchaser but was not sent or given a copy of the Final Offering Memorandum, at or prior to the written confirmation of the sale of such Securities to such person unless (A) the Company has not complied with Section 3(a) of this Agreement and (B) any such untrue statement or omission or alleged untrue statement or omission in the 21

Preliminary Offering Memorandum has not been corrected in the Final Offering Memorandum. (b) Indemnification of Company, Directors and Officers. The Initial Purchaser agrees to indemnify and hold harmless the Company, its directors, its officers and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act against any and all loss, liability, claim, damage and expense described in the indemnity contained in subsection (a) of this Section, as incurred, but only with respect to untrue statements or omissions, or alleged untrue statements or omissions, made in the Offering Memorandum (or any amendment or supplement thereto) in reliance upon and in conformity with written information furnished to the Company by the Initial Purchaser expressly for use in the Offering Memorandum (or any amendment or supplement thereto). (c) Actions against Parties; Notification. Each indemnified party shall give notice as promptly as reasonably practicable to each indemnifying party of any action commenced against it in respect of which indemnity may be sought hereunder, but failure to so notify an indemnifying party shall not relieve such indemnifying party from any liability hereunder to the extent it is not materially prejudiced as a result thereof and in any event shall not relieve it from any liability which it may have otherwise than on account of this indemnity agreement. In the case of parties indemnified pursuant to Section 7(a) above, counsel to the indemnified parties shall be selected by Merrill Lynch, and, in the case of parties indemnified pursuant to Section 7(b) above, counsel to the indemnified parties shall be selected by the Company. An indemnifying party may participate at its own expense in the defense of any such action; provided, however, that counsel to the indemnifying party shall not (except with the consent of the indemnified party) also be counsel to the indemnified party. In no event shall the indemnifying parties be liable for fees and expenses of more than one counsel (in addition to any local counsel) separate from their own counsel for all indemnified parties in connection with any one action or separate but similar or related actions in the same jurisdiction arising out of the same general allegations or circumstances. No indemnifying party shall, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever in respect of which indemnification or contribution could be sought under this Section 7 or Section 8 hereof (whether or not the indemnified parties are actual or potential parties thereto), unless such settlement, compromise or consent (i) includes an unconditional release of each indemnified party from all liability arising out of such litigation, investigation, proceeding or claim and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act by or on behalf of any indemnified party. (d) Settlement without Consent if Failure to Reimburse. If at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel, such indemnifying party agrees that it shall be liable for any settlement of the nature contemplated by Section 7(a)(ii) effected without its written consent if (i) such settlement is entered into more than 45 days after receipt by such indemnifying party of the aforesaid request, (ii) such indemnifying party shall have received notice of the terms of such 22

settlement at least 30 days prior to such settlement being entered into, and (iii) such indemnifying party shall not have reimbursed such indemnified party in accordance with such request prior to the date of such settlement. Notwithstanding the immediately preceding sentence, if at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel, an indemnifying party shall not be liable for any settlement of the nature contemplated by Section 7(a)(ii) effected without its consent if such indemnifying party (i) reimburses such indemnified party in accordance with such request to the extent it considers such request to be reasonable and (ii) provides written notice to the indemnified party substantiating the unpaid balance as unreasonable, in each case prior to the date of such settlement. SECTION 8. Contribution. If the indemnification provided for in Section 7 hereof is for any reason unavailable to or insufficient to hold harmless an indemnified party in respect of any losses, liabilities, claims, damages or expenses referred to therein, then each indemnifying party shall contribute to the aggregate amount of such losses, liabilities, claims, damages and expenses incurred by such indemnified party, as incurred, (i) in such proportion as is appropriate to reflect the relative benefits received by the Company on the one hand and the Initial Purchaser on the other hand from the offering of the Securities pursuant to this Agreement or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company on the one hand and of the Initial Purchaser on the other hand in connection with the statements or omissions which resulted in such losses, liabilities, claims, damages or expenses, as well as any other relevant equitable considerations. The relative benefits received by the Company on the one hand and the Initial Purchaser on the other hand in connection with the offering of the Securities pursuant to this Agreement shall be deemed to be in the same respective proportions as the total net proceeds from the offering of the Securities pursuant to this Agreement (before deducting expenses) received by the Company and the total purchase discount received by the Initial Purchaser, in each case as set forth in the Offering Memorandum, bear to the aggregate initial public offering price of the Securities as set forth on such cover. The relative fault of the Company on the one hand and the Initial Purchaser on the other hand shall be determined by reference to, among other things, whether any such untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by the Company or by the Initial Purchaser and the parties' relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The Company and the Initial Purchaser agree that it would not be just and equitable if contribution pursuant to this Section 8 were determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations referred to above in this Section 8. The aggregate amount of losses, liabilities, claims, damages and expenses incurred by an indemnified party and referred to above in this Section 8 shall be 23

deemed to include any legal or other expenses reasonably incurred by such indemnified party in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue or alleged untrue statement or omission or alleged omission. Notwithstanding the provisions of this Section 8, the Initial Purchaser shall not be required to contribute any amount in excess of the amount by which the total price at which the Securities underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages which the Initial Purchaser has otherwise been required to pay by reason of any such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933 Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. For purposes of this Section 8, each person, if any, who controls the Initial Purchaser within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act shall have the same rights to contribution as the Initial Purchaser, and each director of the Company, each officer of the Company, and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act shall have the same rights to contribution as the Company. SECTION 9. Termination of Agreement. (a) Termination; General. The Initial Purchaser may terminate this Agreement, by notice to the Company, at any time at or prior to Closing Time (i) if there has been, since the time of execution of this Agreement or since the respective dates as of which information is given in the Offering Memorandum, any material adverse change or prospective material adverse change in the business, management, financial position, stockholders' equity or results of operations of the Company and its subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business, or (ii) if there has occurred any material adverse change in the financial markets in the United States, any outbreak of hostilities or escalation thereof or other calamity or crisis or any change or development involving a prospective change in national or international political, financial or economic conditions, in each case the effect of which is such as to make it, in the judgment of the Initial Purchaser, impracticable to market the Securities or to enforce contracts for the sale of the Securities, or (iii) if trading in any securities of the Company has been suspended or materially limited by the Commission or the New York Stock Exchange or if trading generally on the New York Stock Exchange or the American Stock Exchange or in the Nasdaq National Market has been suspended or materially limited, or minimum or maximum prices for trading have been fixed, or maximum ranges for prices have been required, by any of said exchanges or by such system or by order of the Commission, the National Association of Securities Dealers, Inc. or any other governmental authority, or (iv) if a banking moratorium has been declared by either federal or New York authorities. (b) Liabilities. If this Agreement is terminated pursuant to this Section, such 24

termination shall be without liability of any party to any other party except as provided in Section 4 hereof, and provided further that Sections 7 and 8 shall survive such termination and remain in full force and effect. SECTION 10. Notices. All notices and other communications hereunder shall be in writing and shall be deemed to have been duly given if mailed or transmitted by any standard form of telecommunication. Notices to the Initial Purchaser shall be directed to Merrill Lynch at North Tower, World Financial Center, New York, New York 10281-1209, attention of Paul A. Pepe, Managing Director; and notices to the Company shall be directed to it at Two International Place, Boston, MA 02110, attention of Treasurer. SECTION 11. Parties. This Agreement shall inure to the benefit of and be binding upon each of the Initial Purchaser and the Company and their respective successors. Nothing expressed or mentioned in this Agreement is intended or shall be construed to give any person, firm or corporation, other than the Initial Purchaser and the Company and their respective successors and the controlling persons and officers and directors referred to in Sections 7 and 8 and their heirs and legal representatives, any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision herein contained. This Agreement and all conditions and provisions hereof are intended to be for the sole and exclusive benefit of the Initial Purchaser and the Company and their respective successors, and said controlling persons and officers and directors and their heirs and legal representatives, and for the benefit of no other person, firm or corporation. No purchaser of Securities from the Initial Purchaser shall be deemed to be a successor by reason merely of such purchase. SECTION 12. GOVERNING LAW AND TIME. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. EXCEPT AS OTHERWISE SET FORTH HEREIN, SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME. SECTION 13. Effect of Headings. The Article and Section headings herein and the Table of Contents are for convenience only and shall not affect the construction hereof. [Signature page follows] 25

If the foregoing is in accordance with your understanding of our agreement, please sign and return to the Company a counterpart hereof, whereupon this instrument, along with all counterparts, will become a binding agreement between the Initial Purchaser and the Company in accordance with its terms. Very truly yours, AFFILIATED MANAGERS GROUP, INC. By: /s/ Darrell W. Crate ---------------------------- Name: Darrell W. Crate Title: Sr. Vice President and Chief Financial Officer CONFIRMED AND ACCEPTED, as of the date first above written: MERRILL LYNCH & CO. MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED By: /s/ Robert Aberman -------------------------- Authorized Signatory 26

SCHEDULE A AFFILIATED MANAGERS GROUP, INC. $195,000,000 Liquid Yield Option Notes 1. The initial public offering price per $1,000 principal amount at maturity of the Securities shall be $904.95, which represents a yield to maturity of 0.50% per annum (computed on a semiannual bond equivalent basis). 2. The purchase price to be paid by the Initial Purchaser per $1,000 principal amount at maturity of the Securities shall be $882.33. 3. The Securities shall be convertible into shares of common stock, par value $0.01 per share, of the Company at an initial conversion price of approximately $77.88 per share (equivalent to a conversion rate of 11.6195 shares per $1,000 principal amount of Securities). 4. Prior to May 7, 2006, the LYONs will not be redeemable at the Company's option. Beginning on May 7, 2006, the Company may redeem the LYONs for cash as a whole at any time, or from time to time in part, at the redemption prices set forth below. Such prices reflect the accrued original issue discount calculated to each such date. The redemption price of a LYON redeemed between such dates would include an additional amount reflecting the additional original issue discount accrued since the next preceding date in the table. (2) (1) ORIGINAL (3) LYON ISSUE REDEMPTION ISSUE DISCOUNT PRICE REDEMPTION DATE PRICE AT .50% (1) + (2) --------------- ----- ------- --------- May 7, 2006................................. $904.95 $22.88 $927.83 May 7, 2007................................. 904.95 27.52 932.47 May 7, 2008................................. 904.95 32.19 937.14 May 7, 2009................................. 904.95 36.88 941.83 May 7, 2010................................. 904.95 41.60 946.55 May 7, 2011................................. 904.95 46.34 951.29 May 7, 2012................................. 904.95 51.10 956.05 May 7, 2013................................. 904.95 55.89 960.84 May 7, 2014................................. 904.95 60.70 965.65 May 7, 2015................................. 904.95 65.53 970.48 May 7, 2016................................. 904.95 70.39 975.34 May 7, 2017................................. 904.95 75.27 980.22 May 7, 2018................................. 904.95 80.18 985.13 A-1

(2) (1) ORIGINAL (3) LYON ISSUE REDEMPTION ISSUE DISCOUNT PRICE REDEMPTION DATE PRICE AT .50% (1) + (2) --------------- ----- ------- --------- May 7, 2019................................. 904.95 85.11 990.06 May 7, 2020................................. 904.95 90.07 995.02 At stated maturity.......................... $904.95 $95.05 $1,000.00 If converted to semiannual coupon LYONs following the occurrence of a Tax Event, the LYONs will be redeemable at the restated principal amount plus accrued and unpaid interest from the date of the conversion through the redemption date. 5. On the purchase dates of May 7, 2002, May 7, 2004, May 7, 2006, May 7, 2011 and May 7, 2016, the Company will, at the option of the holder, be required to purchase any outstanding LYON for which a written purchase notice has been properly delivered by the holder and not withdrawn, subject to certain additional conditions. The purchase price of a LYON will be as follows: o $909.48 per LYON on May 7, 2002; o $918.61 per LYON on May 7, 2004; o $927.83 per LYON on May 7, 2006; o $951.29 per LYON on May 7, 2011; and o $975.34 per LYON on May 7, 2016. The Company may, at its option, elect to pay the purchase price in cash or shares of common stock, or any combination thereof. If prior to a purchase date the LYONs have been converted to semiannual coupon LYONs following the occurrence of a Tax Event, the purchase price will be equal to the restated principal amount plus accrued and unpaid interest from the date of the conversion to the purchase date. 6. In the event of any Change in Control occurring on or prior to May 7, 2006, each holder will have the right, at the holder's option, subject to the terms and conditions of the indenture, to require the Company to purchase all or any portion of the holder's LYONs at a cash price equal to the issue price plus accrued original issue discount to the change in control purchase date. If prior to a change in control purchase date the LYONs have been converted to A-2

semiannual coupon LYONs following the occurrence of a Tax Event, the Company will be required to purchase the LYONs at a cash price equal to the restated principal amount plus accrued and unpaid interest from the date of the conversion to the change in control purchase date. 7. From and after the date of the occurrence of a Tax Event (as defined in the Offering Memorandum), the Company shall have the option to elect to have interest in lieu of future original issue discount accrue at 0.50% per year on a principal amount per LYON (the "restated principal amount") equal to the issue price plus original issue discount accrued to the date of the Tax Event or the date on which the Company exercises the option described herein, whichever is later (the "option exercise date"). Such interest shall accrue from the option exercise date and shall be payable semiannually on the interest payment dates of May 7 and November 7 of each year to holders of record at the close of business on April 21 or October 22 immediately preceding the interest payment date. Interest will be computed on the basis of a 360-day year comprised of twelve 30-day months. Interest will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the option exercise date. A-3

SCHEDULE B List of persons and entities subject to lock-up William J. Nutt........................................Chairman and Chief Executive Officer Sean M. Healey........................................President and Chief Operating Officer Seth W. Brennan......................................Senior Vice President, New Investments Darrell W. Crate...............Senior Vice President, Chief Financial Officer and Treasurer Nathaniel Dalton.......................Senior Vice President, General Counsel and Secretary Richard E. Floor...................................................................Director Stephen J. Lockwood................................................................Director Harold J. Meyerman.................................................................Director Dr. Rita M. Rodriguez..............................................................Director William F. Weld....................................................................Director B-1

Exhibit A [Form of lock-up pursuant to Section 5(h)] May 7, 2001 MERRILL LYNCH & CO. Merrill Lynch, Pierce, Fenner & Smith Incorporated North Tower Word Financial Center New York, New York 10281-1209 Re: Proposed Offering of Liquid Yield Option Notes by Affiliated Mangers Group, Inc. Dear Sirs: The undersigned, a stockholder [and an officer and/or director] of Affiliated Managers Group, Inc., a Delaware corporation (the "Company"), understands that Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated ("Merrill Lynch") proposes to enter into a Purchase Agreement (the "Purchase Agreement') with the Company providing for the offering of $195,000,000 aggregate principal amount of the Company's Liquid Yield Option Notes due May (Zero Coupon - Senior) (the "Securities"). In recognition of the benefit that such an offering will confer upon the undersigned as a stockholder [and an officer and/or director] of the Company, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the undersigned agrees with Merrill Lynch that, during a period of 60 days from the date of the final offering memorandum relating to the offer and sale of the Securities, the undersigned will not, without the prior written consent of Merrill Lynch, directly or indirectly, (i) offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant for the sale of, lend or otherwise dispose of or transfer any shares of the Company's Common Stock, par value $.01 per share (the "Common Stock"), or any securities convertible into or exchangeable or exercisable for or repayable with Common Stock, whether now owned or hereafter acquired by the undersigned or with respect to which the undersigned has or hereafter acquires the power of disposition, or file any registration statement under the Securities Act of 1933, as amended, with respect to any of the foregoing or (ii) enter Ex. A-1

into any swap or any other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of Common Stock or any securities convertible into or exchangeable for Common Stock, whether any such swap or transaction is to be settled by delivery of Common Stock or other securities, in cash or otherwise. Very truly yours, Signature: ____________________ Print Name:_____________________ Ex. A-2

Exhibit 4.9 -------------------------------------- AFFILIATED MANAGERS GROUP, INC. Liquid Yield Option(TM) Notes due May 7, 2021 (Zero Coupon-Senior) -------------------------------------- INDENTURE Dated as of May 7, 2001 -------------------------------------- FIRST UNION NATIONAL BANK, TRUSTEE -------------------------------------- (TM)Trademark of Merrill Lynch & Co., Inc.

CROSS REFERENCE TABLE1 Indenture TIA Section Section - ----------- ------- 310(a)(1)................................................................ 7.10 (a)(2)................................................................... 7.10 (a)(3)................................................................... N.A. (a)(4)................................................................... N.A. (b).................................................................7.08; 7.10 (c)...................................................................... N.A. 311(a) ...................................................................7.11 (b)...................................................................... 7.11 (c)...................................................................... N.A. 312(a) ...................................................................2.05 (b)......................................................................12.03 (c)......................................................................12.03 313(a) ...................................................................7.06 (b)(1)....................................................................N.A. (b)(2)....................................................................7.06 (c)......................................................................12.02 (d).......................................................................7.06 314(a) ......................................................4.02; 4.03; 12.02 (b).......................................................................N.A. (c)(1)...................................................................12.04 (c)(2)...................................................................12.04 (c)(3)....................................................................N.A. (d).......................................................................N.A. (e)......................................................................12.05 (f).......................................................................N.A. 315(a) ...................................................................7.01 (b)................................................................7.05; 12.02 (c).......................................................................7.01 (d).......................................................................7.01 (e).......................................................................6.11 316(a) (last sentence) ...................................................2.08 (a)(1)(A) ................................................................6.05 (a)(1)(B).................................................................6.04 (a)(2)....................................................................N.A. (b).......................................................................6.07 317(a)(1).................................................................6.08 (a)(2)....................................................................6.09 (b).......................................................................2.04 318(a)...................................................................12.01 N.A. means Not Applicable. - -------- (1) Note: This Cross Reference Table shall not, for any purpose, be deemed to be part of the Indenture.

TABLE OF CONTENTS Page ---- ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE SECTION 1.01. Definitions...........................................1 SECTION 1.02. Other Definitions.....................................5 SECTION 1.03. Incorporation by Reference of Trust Indenture Act.....6 SECTION 1.04. Rules of Construction.................................6 SECTION 1.05. Acts of Holders.......................................7 ARTICLE II. THE SECURITIES SECTION 2.01. Form and Dating.......................................7 SECTION 2.02. Execution and Authentication..........................9 SECTION 2.03. Registrar, Paying Agent and Conversion Agent..........9 SECTION 2.04. Paying Agent to Hold Money and Securities in Trust...10 SECTION 2.05. Securityholder Lists.................................10 SECTION 2.06. Transfer and Exchange................................11 SECTION 2.07. Replacement Securities...............................12 SECTION 2.08. Outstanding Securities; Determinations of Holders' Action .....................................13 SECTION 2.09. Temporary Securities.................................13 SECTION 2.10. Cancellation.........................................14 SECTION 2.11. Persons Deemed Owners................................14 SECTION 2.12. Global Securities....................................14 SECTION 2.13. CUSIP Numbers........................................19 ARTICLE III. REDEMPTION AND PURCHASES SECTION 3.01. Right to Redeem; Notices to Trustee..................19 SECTION 3.02. Selection of Securities to Be Redeemed...............19 SECTION 3.03. Notice of Redemption.................................20 SECTION 3.04. Effect of Notice of Redemption.......................21 SECTION 3.05. Deposit of Redemption Price..........................21 SECTION 3.06. Securities Redeemed in Part..........................21 SECTION 3.07. Conversion Arrangement on Call for Redemption........21 SECTION 3.08. Purchase of Securities at Option of the Holder.......22 SECTION 3.09. Purchase of Securities at Option of the Holder upon Change in Control....................................27 SECTION 3.10. Effect of Purchase Notice or Change in Control Purchase Notice......................................30 SECTION 3.11. Deposit of Purchase Price or Change in Control Purchase Price.......................................31 SECTION 3.12. Securities Purchased in Part.........................32 i

SECTION 3.13. Covenant to Comply With Securities Laws Upon Purchase of Securities...............................32 SECTION 3.14. Repayment to the Company.............................32 ARTICLE IV. COVENANTS SECTION 4.01. Payment of Securities................................32 SECTION 4.02. SEC and Other Reports................................33 SECTION 4.03. Compliance Certificate...............................33 SECTION 4.04. Further Instruments and Acts.........................33 SECTION 4.05. Maintenance of Office or Agency......................34 SECTION 4.06. Delivery of Certain Information......................34 SECTION 4.07. Calculation of Original Issue Discount...............34 ARTICLE V. SUCCESSOR CORPORATION SECTION 5.01. When Company May Merge or Transfer Assets............34 ARTICLE VI. DEFAULTS AND REMEDIES SECTION 6.01. Events of Default....................................35 SECTION 6.02. Acceleration.........................................37 SECTION 6.03. Other Remedies.......................................38 SECTION 6.04. Waiver of Past Defaults..............................38 SECTION 6.05. Control by Majority..................................38 SECTION 6.06. Limitation on Suits..................................38 SECTION 6.07. Rights of Holders to Receive Payment.................39 SECTION 6.08. Collection Suit by Trustee...........................39 SECTION 6.09. Trustee May File Proofs of Claim.....................39 SECTION 6.10. Priorities...........................................40 SECTION 6.11. Undertaking for Costs................................40 SECTION 6.12. Waiver of Stay, Extension or Usury Laws..............40 ARTICLE VII. TRUSTEE SECTION 7.01. Duties of Trustee....................................41 SECTION 7.02. Rights of Trustee....................................42 SECTION 7.03. Individual Rights of Trustee.........................43 SECTION 7.04. Trustee's Disclaimer.................................43 SECTION 7.05. Notice of Defaults...................................43 SECTION 7.06. Reports by Trustee to Holders........................44 SECTION 7.07. Compensation and Indemnity...........................44 SECTION 7.08. Replacement of Trustee...............................45 SECTION 7.09. Successor Trustee by Merger..........................45 ii

SECTION 7.10. Eligibility; Disqualification........................45 SECTION 7.11. Preferential Collection of Claims Against Company....46 ARTICLE VIII. DISCHARGE OF INDENTURE SECTION 8.01. Discharge of Liability on Securities.................46 SECTION 8.02. Repayment to the Company.............................46 ARTICLE IX. AMENDMENTS SECTION 9.01. Without Consent of Holders...........................46 SECTION 9.02. With Consent of Holders..............................47 SECTION 9.03. Compliance with Trust Indenture Act..................47 SECTION 9.04. Revocation and Effect of Consents, Waivers and Actions..........................................47 SECTION 9.05. Notation on or Exchange of Securities................48 SECTION 9.06. Trustee to Sign Supplemental Indentures..............48 SECTION 9.07. Effect of Supplemental Indentures....................48 ARTICLE X. SPECIAL TAX EVENT CONVERSION SECTION 10.01. Optional Conversion to Semiannual Coupon Note Upon Tax Event ......................................48 SECTION 10.02. Payment of Interest; Interest Rights Preserved.......49 ARTICLE XI. CONVERSION SECTION 11.01. Conversion Privilege.................................50 SECTION 11.02. Conversion Procedure.................................51 SECTION 11.03. Fractional Shares....................................52 SECTION 11.04. Taxes on Conversion..................................52 SECTION 11.05. Company to Provide Stock.............................53 SECTION 11.06. Adjustment for Change in Capital Stock...............53 SECTION 11.07. Adjustment for Rights Issue..........................54 SECTION 11.08. Adjustment for Other Distributions...................55 SECTION 11.09. When Adjustment May Be Deferred......................56 SECTION 11.10. When No Adjustment Required..........................56 SECTION 11.11. Notice of Adjustment.................................57 SECTION 11.12. Voluntary Increase...................................57 SECTION 11.13. Notice of Certain Transactions.......................57 SECTION 11.14. Reorganization of Company; Special Distributions.....58 SECTION 11.15. Company Determination Final..........................58 SECTION 11.16. Trustee's Adjustment Disclaimer......................58 SECTION 11.17. Simultaneous Adjustments.............................59 SECTION 11.18. Successive Adjustments...............................59 iii

SECTION 11.19. Rights Issued in Respect of Common Stock Issued Upon Conversion......................................59 ARTICLE XII. MISCELLANEOUS SECTION 12.01. Trust Indenture Act Controls.........................59 SECTION 12.02. Notices..............................................59 SECTION 12.03. Communication by Holders with Other Holders..........60 SECTION 12.04. Certificate and Opinion as to Conditions Precedent...60 SECTION 12.05. Statements Required in Certificate or Opinion........60 SECTION 12.06. Separability Clause..................................61 SECTION 12.07. Rules by Trustee, Paying Agent, Conversion Agent and Registrar........................................61 SECTION 12.08. Legal Holidays.......................................61 SECTION 12.09. GOVERNING LAW........................................61 SECTION 12.10. No Recourse Against Others...........................61 SECTION 12.11. Successors...........................................61 SECTION 12.12. Multiple Originals...................................61 EXHIBIT A-1 FORM OF SECURITY EXHIBIT A-2 FORM OF CERTIFICATED SECURITY EXHIBIT B-1 FORM OF TRANSFER CERTIFICATE EXHIBIT B-2 FORM OF LETTER TO BE DELIVERED BY ACCREDITED INVESTORS iv

INDENTURE dated as of May 7, 2001 between AFFILIATED MANAGERS GROUP, INC., a Delaware corporation ("Company"), and First Union National Bank, a national banking association ("Trustee"). Each party agrees as follows for the benefit of the other party and for the equal and ratable benefit of the Holders of the Company's Liquid Yield Option(TM)(TM) Trademark of Merrill Lynch & Co., Inc. Notes due May 7, 2021 (Zero Coupon - Senior) (the "Securities"): ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE SECTION 1.01. Definitions. "144A Global Security" means a permanent Global Security in the form of the Security attached hereto as Exhibit A-1, and that is deposited with and registered in the name of the Depositary, representing Securities sold in reliance on Rule 144A under the Securities Act. "Affiliate" of any specified person means any other person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified person. For the purposes of this definition, "control" when used with respect to any specified person means the power to direct or cause the direction of the management and policies of such person, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise; and the terms "controlling" and "controlled" have meanings correlative to the foregoing. "Applicable Procedures" means, with respect to any transfer or transaction involving a Global Security or beneficial interest therein, the rules and procedures of the Depositary for such Security, in each case to the extent applicable to such transaction and as in effect from time to time. "Board of Directors" means either the board of directors of the Company or any duly authorized committee of such board. "Business Day" means each day of the year other than a Saturday or a Sunday on which banking institutions are not required or authorized to close in the City of New York. "Capital Stock" for any corporation means any and all shares, interests, rights to purchase, warrants, options, participations or other equivalents of or interests in (however designated) stock issued by that corporation. "Certificated Securities" means Securities that are in the form of the Securities attached hereto as Exhibit A-2. - ---------- (TM) Trademark of Merrill Lynch & Co., Inc.

"Common Stock" shall mean the shares of Common Stock, $0.01 par value, of the Company as it exists on the date of this Indenture or any other shares of Capital Stock of the Company into which the Common Stock shall be reclassified or changed. "Company" means the party named as the "Company" in the first paragraph of this Indenture until a successor replaces it pursuant to the applicable provisions of this Indenture and, thereafter, shall mean such successor. The foregoing sentence shall likewise apply to any such subsequent successor or successors. "Company Request" or "Company Order" means a written request or order signed in the name of the Company by any two Officers and delivered to the Trustee. "Corporate Trust Office" means the principal office of the Trustee at which at any time its corporate trust business shall be administered, which office at the dated hereof is located at One World Trade Center, Suite 4711, New York, NY 10048, Attention: Corporate Trust - Bond Administration, or such other address as the Trustee may designate from time to time by notice to the Holders and the Company, or the principal corporate trust office of any successor Trustee (or such other address as a successor Trustee may designate from time to time by notice to the Holders and the Company). "Debt" means with respect to the Company at any date, without duplication, obligations (other than nonrecourse obligations) under any bond, debenture, note or other evidence of indebtedness for money borrowed by the Company. "Default" means any event which is, or after notice or passage of time or both would be, an Event of Default. "Global Securities" means Securities that are in the form of the Securities attached hereto as Exhibit A-1, and to the extent that such Securities are required to bear the Legend required by Section 2.06, such Securities will be in the form of a 144A Global Security. "Holder" or "Securityholder" means a person in whose name a Security is registered on the Registrar's books. "Indenture" means this Indenture, as amended or supplemented from time to time in accordance with the terms hereof, including the provisions of the TIA that are deemed to be a part hereof. "Institutional Accredited Investor Security" means a Security in the form of the Security attached hereto as Exhibit A-2, representing Securities sold to institutional "accredited investors" (as defined in Rule 501(a)(1), (2), (3) and (7) under the Securities Act). "Issue Date" of any Security means the date on which the Security was originally issued or deemed issued as set forth on the face of the Security. "Issue Price" of any Security means, in connection with the original issuance of such Security, the initial issue price at which the Security is sold as set forth on the face of the Security. 2

"Officer" means the Chairman of the Board, the President, any Senior Vice President, any Vice President, the Treasurer, the Secretary, any Assistant Treasurer or any Assistant Secretary of the Company. "Officers' Certificate" means a written certificate containing the information specified in Sections 12.04 and 12.05, signed in the name of the Company by any two Officers and delivered to the Trustee. An Officers' Certificate given pursuant to Section 4.03 shall be signed by the principal executive, financial or accounting officer of the Company but need not contain the information specified in Sections 12.04 and 12.05. "Opinion of Counsel" means a written opinion containing the information specified in Sections 12.04 and 12.05, from legal counsel who is acceptable to the Trustee. The counsel may be an employee of, or counsel to, the Company or the Trustee. "Original Issue Discount" of any Security means the difference between the Issue Price and the Principal Amount at Maturity of the Security as set forth on the face of the Security. "person" or "Person" means any individual, corporation, limited liability company, partnership, joint venture, association, joint-stock company, trust, unincorporated organization, or government or any agency or political subdivision thereof. "Principal Amount at Maturity" of a Security means the Principal Amount at Maturity as set forth on the face of the Security. "Redemption Date" or "redemption date" shall mean the date specified for redemption of the Securities in accordance with the terms of the Securities and this Indenture. "Redemption Price" or "redemption price" shall have the meaning set forth in paragraph 5 of the Securities. "Responsible Officer", when used with respect to the Trustee, means any officer within the corporate trust department (or any successor group) including without limitation any vice president, any assistant vice president, any trust officer or any other officer of the Trustee customarily performing functions similar to those performed by any of the above- designated officers and also means, with respect to a particular corporate trust matter, any other officer to whom such matter is referred because of his knowledge of and familiarity with the particular subject. "Restricted Security" means a Security required to bear the restrictive legend set forth in the form of Security set forth in Exhibits A-1 and A-2 of this Indenture. "Rule 144A" means Rule 144A under the Securities Act (or any successor provision), as it may be amended from time to time. "SEC" means the Securities and Exchange Commission. "Securities" means any of the Company's Liquid Yield Option Notes due 2021 (Zero Coupon-Senior), as amended or supplemented from time to time, issued under this Indenture. 3

"Securityholder" or "Holder" means a person in whose name a Security is registered on the Registrar's books. "Special Record Date" means, for the payment of any Defaulted Interest, the date fixed by the Trustee pursuant to Section 10.02(b). "Stated Maturity", when used with respect to any Security, means the date specified in such Security as the fixed date on which an amount equal to the Principal Amount at Maturity of such Security is due and payable. "Subsidiary" means (i) a corporation, a majority of whose Capital Stock with voting power, under ordinary circumstances, to elect directors is, at the date of determination, directly or indirectly owned by the Company, by one or more Subsidiaries of the Company or by the Company and one or more Subsidiaries of the Company, (ii) a partnership in which the Company or a Subsidiary of the Company, one or more Subsidiaries of the Company or the Company and one or more Subsidiaries of the Company holds a majority interest in the equity capital or profits of such partnership, or (iii) any other person (other than a corporation) in which the Company, one or more Subsidiaries of the Company or the Company and one or more Subsidiaries of the Company, directly or indirectly, at the date of determination, has (x) at least a majority ownership interest or (y) the power to elect or direct the election of a majority of the directors or other governing body of such person. "Tax Event" means that the Company shall have received an opinion from independent tax counsel experienced in such matters to the effect that, on or after May 1, 2001, as a result of (a) any amendment to, or change (including any announced prospective change) in, the laws (or any regulations thereunder) of the United States or any political subdivision or taxing authority thereof or therein or (b) any amendment to, or change in, an interpretation or application of such laws or regulations by any legislative body, court, governmental agency or regulatory authority, in each case which amendment or change is enacted, promulgated, issued or announced or which interpretation is issued or announced or which action is taken, on or after May 1, 2001, there is more than an insubstantial risk that interest (including Original Issue Discount) payable on the Securities either (i) would not be deductible on a current accrual basis or (ii) would not be deductible under any other method, in either case in whole or in part, by the Company (by reason of deferral, disallowance, or otherwise) for United States Federal income tax purposes. "TIA" means the Trust Indenture Act of 1939 as in effect on the date of this Indenture, provided, however, that in the event the TIA is amended after such date, TIA means, to the extent required by any such amendment, the TIA as so amended. "trading day" means a day during which trading in securities generally occurs on the New York Stock Exchange or, if the Common Stock is not listed on the New York Stock Exchange, on the principal other national or regional securities exchange on which the Common Stock is then listed or, if the Common Stock is not listed on a national or regional securities exchange, on the National Association of Securities Dealers Automated Quotation System or, if the Common Stock is not quoted on the National Association of Securities Dealers Automated Quotation System, on the principal other market on which the Common Stock is then traded. 4

"Trustee" means the party named as the "Trustee" in the first paragraph of this Indenture until a successor replaces it pursuant to the applicable provisions of this Indenture and, thereafter, shall mean such successor. The foregoing sentence shall likewise apply to any subsequent such successor or successors. SECTION 1.02. Other Definitions. Defined Term in Section - ---------- ---------- "Act"..................................................................1.05(a) "Agent Members"........................................................2.12(e) "Associate"............................................................3.09(a) "Average Sale Price".....................................................11.01 "Bankruptcy Law"..........................................................6.01 "beneficial owner".....................................................3.09(a) "cash".................................................................3.08(b) "Change in Control"....................................................3.09(a) "Change in Control Purchase Date"......................................3.09(a) "Change in Control Purchase Notice"....................................3.09(c) "Change in Control Purchase Price".....................................3.09(a) "Company Notice".......................................................3.08(e) "Company Notice Date"..................................................3.08(c) "Conversion Agent"........................................................2.03 "Conversion Date"........................................................11.02 "Conversion Rate"........................................................11.01 "Custodian"...............................................................6.01 "Defaulted Interest"..................................................10.02(b) "Depositary"...........................................................2.01(a) "DTC"..................................................................2.01(a) "Event of Default"........................................................6.01 "Exchange Act".........................................................3.08(d) "Ex-Dividend Time".......................................................11.01 "Extraordinary Cash Dividend"............................................11.08 "Institutional Accredited Investors"...................................2.01(b) "Interest Payment Date"..................................................10.01 "Legal Holiday"..........................................................12.08 "Legend"...............................................................2.06(f) "Market Price".........................................................3.08(d) "Measurement Period".....................................................11.08 "Notice of Default".......................................................6.01 "Option Exercise Date"...................................................10.01 "Over-Allotment Option"...................................................2.02 "Paying Agent"............................................................2.03 "Purchase Date"........................................................3.08(a) "Purchase Notice"......................................................3.08(a) "Purchase Price".......................................................3.08(a) 5

Defined Term in Section - ---------- ---------- "QIB"..................................................................2.01(a) "Registrar"...............................................................2.03 "Regular Record Date"....................................................10.01 "Relevant Cash Dividends"................................................11.08 "Restated Principal Amount"..............................................10.01 "Rights".................................................................11.19 "Rights Agreement".......................................................11.19 "Rule 144A Information"...................................................4.06 "Sale Price"...........................................................3.08(d) "Securities Act".......................................................3.08(d) "Tax Event Date".........................................................10.01 "Time of Determination"..................................................11.01 SECTION 1.03. Incorporation by Reference of Trust Indenture Act. Whenever this Indenture refers to a provision of the TIA, the provision is incorporated by reference in and made a part of this Indenture. The following TIA terms used in this Indenture have the following meanings: "Commission" means the SEC. "indenture securities" means the Securities. "indenture security holder" means a Securityholder. "indenture to be qualified" means this Indenture. "indenture trustee" or "institutional trustee" means the Trustee. "obligor" on the indenture securities means the Company. All other TIA terms used in this Indenture that are defined by the TIA, defined by TIA reference to another statute or defined by SEC rule have the meanings assigned to them by such definitions. SECTION 1.04. Rules of Construction. Unless the context otherwise requires: (a) a term has the meaning assigned to it; (b) an accounting term not otherwise defined has the meaning assigned to it in accordance with generally accepted accounting principles as in effect from time to time; (c) "or" is not exclusive; (d) "including" means including, without limitation; and 6

(e) words in the singular include the plural, and words in the plural include the singular. SECTION 1.05. Acts of Holders. (a) Any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture to be given or taken by Holders may be embodied in and evidenced by one or more instruments of substantially similar tenor signed by such Holders in person or by agent duly appointed in writing; and, except as herein otherwise expressly provided, such action shall become effective when such instrument or instruments are delivered to the Trustee and, where it is hereby expressly required, to the Company. Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein sometimes referred to as the "Act" of Holders signing such instrument or instruments. Proof of execution of any such instrument or of a writing appointing any such agent shall be sufficient for any purpose of this Indenture and conclusive in favor of the Trustee and the Company, if made in the manner provided in this Section. (b) The fact and date of the execution by any Person of any such instrument or writing may be proved by the affidavit of a witness of such execution or by a certificate of a notary public or other officer authorized by law to take acknowledgments of deeds, certifying that the individual signing such instrument or writing acknowledged to such officer the execution thereof. Where such execution is by a signer acting in a capacity other than such signer's individual capacity, such certificate or affidavit shall also constitute sufficient proof of such signer's authority. The fact and date of the execution of any such instrument or writing, or the authority of the Person executing the same, may also be proved in any other manner which the Trustee deems sufficient. (c) The ownership of Securities shall be proved by the register maintained by the Registrar. (d) Any request, demand, authorization, direction, notice, consent, waiver or other Act of the Holder of any Security shall bind every future Holder of the same Security and the holder of every Security issued upon the registration of transfer thereof or in exchange therefor or in lieu thereof in respect of anything done, omitted or suffered to be done by the Trustee or the Company in reliance thereon, whether or not notation of such action is made upon such Security. ARTICLE II. THE SECURITIES SECTION 2.01. Form and Dating. The Securities and the Trustee's certificate of authentication shall be substantially in the form of Exhibits A-1 and A-2, as the case may be, which are a part of this Indenture. The Securities may have notations, legends or endorsements required by law, stock exchange rule or usage (provided that any such notation, legend or endorsement required by usage is in a form acceptable to the Company). The Company shall provide any such notations, legends or endorsements to the Trustee in writing. Each Security shall be dated the date of its authentication. 7

(a) 144A Global Securities. Securities offered and sold within the United States to qualified institutional buyers as defined in Rule 144A ("QIBs") in reliance on Rule 144A shall be issued, initially in the form of a 144A Global Security, substantially in the form of Exhibit A-1 attached hereto, which shall be deposited with the Trustee at its Corporate Trust Offices, as custodian for the Depositary and registered in the name of The Depository Trust Company ("DTC") or the nominee thereof (such depositary, or any successor thereto, and any such nominee being hereinafter referred to as the "Depositary"), duly executed by the Company and authenticated by the Trustee as hereinafter provided. The Aggregate Principal Amount at Maturity of the 144A Global Securities may from time to time be increased or decreased by adjustments made on the records of the Trustee and the Depositary as hereinafter provided. (b) Institutional Accredited Investor Securities. Except as provided in this Section 2.01, or in Section 2.06 or 2.12, owners of beneficial interests in Global Securities will not be entitled to receive physical delivery of Certificated Securities. Securities offered and sold within the United States to institutional accredited investors as defined in Rule 501(a)(1), (2), (3) and (7) under the Securities Act ("Institutional Accredited Investors") shall be issued, initially in the form of an Institutional Accredited Investor Security, duly executed by the Company and authenticated by the Trustee as hereinafter provided. (c) Global Securities in General. Each Global Security shall represent such of the outstanding Securities as shall be specified therein and each shall provide that it shall represent the Aggregate Principal Amount at maturity of outstanding Securities from time to time endorsed thereon and that the Aggregate Principal Amount at Maturity of outstanding Securities represented thereby may from time to time be reduced or increased, as appropriate, to reflect exchanges, redemptions and conversions. Any adjustment of the Aggregate Principal Amount at Maturity of a Global Security to reflect the amount of any increase or decrease in the amount of outstanding Securities represented thereby shall be made by the Trustee in accordance with instructions given by the Holder thereof as required by Section 2.12 hereof and shall be made on the records of the Trustee and the Depositary. (d) Book-Entry Provisions. This Section 2.01(d) shall apply only to Global Securities deposited with or on behalf of the Depositary. The Company shall execute and the Trustee shall, in accordance with this Section 2.01(d), authenticate and deliver initially one or more Global Securities that (a) shall be registered in the name of the Depositary, (b) shall be delivered by the Trustee to the Depositary or pursuant to the Depositary's instructions and (c) shall bear legends substantially to the following effect: "UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY), ANY TRANSFER, 8

PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. TRANSFERS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS, IN WHOLE BUT NOT IN PART, TO NOMINEES OF THE DEPOSITORY TRUST COMPANY OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR'S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN ARTICLE TWO OF THE INDENTURE REFERRED TO ON THE REVERSE HEREOF." (e) Certificated Securities. Securities not issued as interests in the Global Securities will be issued in certificated form substantially in the form of Exhibit A-2 attached hereto. SECTION 2.02. Execution and Authentication. The Securities shall be executed on behalf of the Company by any Officer. The signature of any of these Officers on the Securities may be manual or facsimile. Securities bearing the manual or facsimile signatures of individuals who were at the time of the execution of the Securities the proper Officers of the Company shall bind the Company, notwithstanding that such individuals or any of them have ceased to hold such offices prior to the authentication and delivery of such Securities or did not hold such offices at the date of authentication of such Securities. No Security shall be entitled to any benefit under this Indenture or be valid or obligatory for any purpose unless there appears on such Security a certificate of authentication substantially in the form provided for herein duly executed by the Trustee by manual signature of an authorized signatory, and such certificate upon any Security shall be conclusive evidence, and the only evidence, that such Security has been duly authenticated and delivered hereunder. The Trustee shall authenticate and deliver Securities for original issue in an aggregate Principal Amount at Maturity of up to $195,000,000 upon a Company Order without any further action by the Company; provided, however, that in the event that the Company sells any Securities pursuant to the Underwriter's over-allotment option (the "Over-Allotment Option") granted pursuant to Section 2 of the Purchase Agreement between the Company and Merrill Lynch, Pierce, Fenner & Smith Incorporated dated as of May 1, 2001 then the Trustee shall authenticate and deliver Securities for original issue in an aggregate Principal Amount at Maturity of up to $195,000,000 plus up to $56,000,000 aggregate Principal Amount at Maturity of Securities sold pursuant to the Over-Allotment Option upon a Company Order without any further action by the Company. The aggregate Principal Amount at Maturity of Securities outstanding at any time may not exceed the amount set forth in the foregoing sentence, subject to the proviso set forth therein, except as provided in Section 2.07. The Securities shall be issued only in registered form without coupons and only in denominations of $1,000 of Principal Amount at Maturity and any integral multiple thereof. SECTION 2.03. Registrar, Paying Agent and Conversion Agent. The Company shall maintain an office or agency where Securities may be presented for registration of transfer 9

or for exchange ("Registrar"), an office or agency where Securities may be presented for purchase or payment ("Paying Agent") and an office or agency where Securities may be presented for conversion ("Conversion Agent"). The Registrar shall keep a register of the Securities and of their transfer and exchange. The Company may have one or more co-registrars, one or more additional paying agents and one or more additional conversion agents. The term Paying Agent includes any additional paying agent, including any named pursuant to Section 4.05. The term Conversion Agent includes any additional conversion agent, including any named pursuant to Section 4.05. The Company shall enter into an appropriate agency agreement with any Registrar, Paying Agent, Conversion Agent or co-registrar (other than the Trustee). The agreement shall implement the provisions of this Indenture that relate to the duties of such agent. The Company shall notify the Trustee of the name and address of any such agent. If the Company fails to maintain a Registrar, Paying Agent or Conversion Agent, the Trustee shall act as such and shall be entitled to appropriate compensation therefor pursuant to Section 7.07. The Company or any Subsidiary or an Affiliate of either of them may act as Paying Agent, Registrar, Conversion Agent or co-registrar. The Company initially appoints the Trustee as Registrar, Conversion Agent and Paying Agent in connection with the Securities. SECTION 2.04. Paying Agent to Hold Money and Securities in Trust. Except as otherwise provided herein, on or prior to each due date of payments in respect of any Security, the Company shall deposit with the Paying Agent a sum of money (in immediately available funds if deposited on the due date) or, if applicable, Common Stock sufficient to make such payments when so becoming due. The Company shall require each Paying Agent (other than the Trustee) to agree in writing that the Paying Agent shall hold in trust for the benefit of Securityholders and/or the Trustee all money and Common Stock held by the Paying Agent for the making of payments in respect of the Securities and shall notify the Trustee of any default by the Company in making any such payment. At any time during the continuance of any such default, the Paying Agent shall, upon the written request of the Trustee, forthwith pay to the Trustee all money and Common Stock so held in trust. If the Company, a Subsidiary or an Affiliate of either of them acts as Paying Agent, it shall segregate the money and Common Stock held by it as Paying Agent and hold it as a separate trust fund. The Company at any time may require a Paying Agent to pay all money and Common Stock held by it to the Trustee and to account for any funds and Common Stock disbursed by it. Upon doing so, the Paying Agent shall have no further liability for the money or Common Stock. SECTION 2.05. Securityholder Lists. The Trustee shall preserve in as current a form as is reasonably practicable the most recent list available to it of the names and addresses of Securityholders. If the Trustee is not the Registrar, the Company shall cause to be furnished to the Trustee at least semiannually on May 1 and November 1 a listing of Securityholders dated within 15 days of the date on which the list is furnished and at such other times as the Trustee may request in writing a list in such form and as of such date as the Trustee may reasonably require of the names and addresses of Securityholders. 10

SECTION 2.06. Transfer and Exchange. (a) Subject to Section 2.12 hereof, upon surrender for registration of transfer of any Security, together with a written instrument of transfer satisfactory to the Registrar duly executed by the Securityholder or such Securityholder's attorney duly authorized in writing, at the office or agency of the Company designated as Registrar or co-registrar pursuant to Section 2.03, the Company shall execute, and the Trustee shall authenticate and deliver, in the name of the designated transferee or transferees, one or more new Securities of any authorized denomination or denominations, of a like aggregate Principal Amount at Maturity. The Company shall not charge a service charge for any registration of transfer or exchange, but the Company may require payment of a sum sufficient to pay all taxes, assessments or other governmental charges that may be imposed in connection with the transfer or exchange of the Securities from the Securityholder requesting such transfer or exchange. At the option of the Holder, Certificated Securities may be exchanged for other Securities of any authorized denomination or denominations, of a like aggregate Principal Amount at Maturity, upon surrender of the Securities to be exchanged, together with a written instrument of transfer satisfactory to the Registrar duly executed by the Securityholder or such Securityholder's attorney duly authorized in writing, at such office or agency. Whenever any Securities are so surrendered for exchange, the Company shall execute, and the Trustee shall authenticate and deliver, the Securities which the Holder making the exchange is entitled to receive. The Company shall not be required to make, and the Registrar need not register, transfers or exchanges of Securities selected for redemption (except, in the case of Securities to be redeemed in part, the portion thereof not to be redeemed) or any Securities in respect of which a Purchase Notice or Change in Control Purchase Notice has been given and not withdrawn by the Holder thereof in accordance with the terms of this Indenture (except, in the case of Securities to be purchased in part, the portion thereof not to be purchased) or any Securities for a period of 15 days before the mailing of a notice of redemption of Securities to be redeemed. (b) Notwithstanding any provision to the contrary herein, so long as a Global Security remains outstanding and is held by or on behalf of the Depositary, transfers of a Global Security, in whole or in part, shall be made only in accordance with Section 2.12 and this Section 2.06(b). Transfers of a Global Security shall be limited to transfers of such Global Security in whole, or in part, to nominees of the Depositary or to a successor of the Depositary or such successor's nominee. (c) Successive registrations and registrations of transfers and exchanges as aforesaid may be made from time to time as desired, and each such registration shall be noted on the register for the Securities. (d) Any Registrar appointed pursuant to Section 2.03 hereof shall provide to the Trustee such information as the Trustee may reasonably require in connection with the delivery by such Registrar of Securities upon transfer or exchange of Securities. 11

(e) No Registrar shall be required to make registrations of transfer or exchange of Securities during any periods designated in the text of the Securities or in this Indenture as periods during which such registration of transfers and exchanges need not be made. (f) If Securities are issued upon the transfer, exchange or replacement of Securities subject to restrictions on transfer and bearing the legends set forth on the form of Security attached hereto as Exhibits A-1 or A-2 setting forth such restrictions (collectively, the "Legend"), or if a request is made to remove the Legend on a Security, the Securities so issued shall bear the Legend, or the Legend shall not be removed, as the case may be, unless (i) there is delivered to the Company and the Registrar such satisfactory evidence, which shall include an Opinion of Counsel, as may be reasonably required by the Company and the Registrar, that neither the Legend nor the restrictions on transfer set forth therein are required to ensure that transfers thereof comply with the provisions of Rule 144A or Rule 144 under the Securities Act or that such Securities are not "restricted" within the meaning of Rule 144 under the Securities Act. Upon (i) provision of such satisfactory evidence, or (ii) notification by the Company to the Trustee and Registrar of the sale of such Security pursuant to a registration statement that is effective at the time of such sale, the Trustee, at the written direction of the Company, shall authenticate and deliver a Security that does not bear the Legend. If the Legend is removed from the face of a Security and the Security is subsequently held by an Affiliate of the Company, the Legend shall be reinstated. SECTION 2.07. Replacement Securities. If (a) any mutilated Security is surrendered to the Trustee, or (b) the Company and the Trustee receive evidence to their satisfaction of the destruction, loss or theft of any Security, and there is delivered to the Company and the Trustee such security or indemnity as may be required by them to save each of them harmless, then, in the absence of notice to the Company or the Trustee that such Security has been acquired by a bona fide purchaser, the Company shall execute and upon its written request the Trustee shall authenticate and deliver, in exchange for any such mutilated Security or in lieu of any such destroyed, lost or stolen Security, a new Security of like tenor and Principal Amount at Maturity, bearing a number not contemporaneously outstanding. In case any such mutilated, destroyed, lost or stolen Security has become or is about to become due and payable, or is about to be purchased by the Company pursuant to Article 3 hereof, the Company in its discretion may, instead of issuing a new Security, pay or purchase such Security, as the case may be. Upon the issuance of any new Securities under this Section, the Company may require the payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and any other expenses (including the fees and expenses of the Trustee) connected therewith. Every new Security issued pursuant to this Section in lieu of any mutilated, destroyed, lost or stolen Security shall constitute an original additional contractual obligation of the Company, whether or not the mutilated, destroyed, lost or stolen Security shall be at any time enforceable by anyone, and shall be entitled to all benefits of this Indenture equally and proportionately with any and all other Securities duly issued hereunder. 12

The provisions of this Section are exclusive and shall preclude (to the extent lawful) all other rights and remedies with respect to the replacement or payment of mutilated, destroyed, lost or stolen Securities. SECTION 2.08. Outstanding Securities; Determinations of Holders' Action. Securities outstanding at any time are all the Securities authenticated by the Trustee except for those canceled by it, those delivered to it for cancellation, those paid pursuant to Section 2.07 and those described in this Section 2.08 as not outstanding. A Security does not cease to be outstanding because the Company or an Affiliate thereof holds the Security; provided, however, that in determining whether the Holders of the requisite Principal Amount at Maturity of Securities have given or concurred in any request, demand, authorization, direction, notice, consent or waiver hereunder, Securities owned by the Company or any other obligor upon the Securities or any Affiliate of the Company or such other obligor shall be disregarded and deemed not to be outstanding, except that, in determining whether the Trustee shall be protected in relying upon any such request, demand, authorization, direction, notice, consent or waiver, only Securities which a Responsible Officer of the Trustee actually knows to be so owned shall be so disregarded. Subject to the foregoing, only Securities outstanding at the time of such determination shall be considered in any such determination (including, without limitation, determinations pursuant to Articles 6 and 9). If a Security is replaced pursuant to Section 2.07, it ceases to be outstanding unless the Trustee receives proof satisfactory to it that the replaced Security is held by a bona fide purchaser. If the Paying Agent holds, in accordance with this Indenture, on a Redemption Date, or on the Business Day following the Purchase Date or a Change in Control Purchase Date, or on Stated Maturity, money or securities, if permitted hereunder, sufficient to pay Securities payable on that date, then immediately after such Redemption Date, Purchase Date, Change in Control Purchase Date or Stated Maturity, as the case may be, such Securities shall cease to be outstanding and Original Issue Discount and interest, if any, on such Securities shall cease to accrue; provided, that if such Securities are to be redeemed, notice of such redemption has been duly given pursuant to this Indenture or provision therefor satisfactory to the Trustee has been made. If a Security is converted in accordance with Article 11, then from and after the time of conversion on the Conversion Date, such Security shall cease to be outstanding and Original Issue Discount and interest, if any, shall cease to accrue on such Security. SECTION 2.09. Temporary Securities. Pending the preparation of definitive Securities, the Company may execute, and upon Company Order the Trustee shall authenticate and deliver, temporary Securities which are printed, lithographed, typewritten, mimeographed or otherwise produced, in any authorized denomination, substantially of the tenor of the definitive Securities in lieu of which they are issued and with such appropriate insertions, omissions, substitutions and other variations as the officers executing such Securities may determine, as conclusively evidenced by their execution of such Securities. 13

If temporary Securities are issued, the Company will cause definitive Securities to be prepared without unreasonable delay. After the preparation of definitive Securities, the temporary Securities shall be exchangeable for definitive Securities upon surrender of the temporary Securities at the office or agency of the Company designated for such purpose pursuant to Section 2.03, without charge to the Holder. Upon surrender for cancellation of any one or more temporary Securities the Company shall execute and the Trustee shall authenticate and deliver in exchange therefor a like Principal Amount at Maturity of definitive Securities of authorized denominations. Until so exchanged the temporary Securities shall in all respects be entitled to the same benefits under this Indenture as definitive Securities. SECTION 2.10. Cancellation. All Securities surrendered for payment, purchase by the Company pursuant to Article 3, conversion, redemption or registration of transfer or exchange shall, if surrendered to any person other than the Trustee, be delivered to the Trustee and shall be promptly canceled by it. The Company may at any time deliver to the Trustee for cancellation any Securities previously authenticated and delivered hereunder which the Company may have acquired in any manner whatsoever, and all Securities so delivered shall be promptly canceled by the Trustee. The Company may not issue new Securities to replace Securities it has paid or delivered to the Trustee for cancellation or that any Holder has converted pursuant to Article 11. No Securities shall be authenticated in lieu of or in exchange for any Securities canceled as provided in this Section, except as expressly permitted by this Indenture. All canceled Securities held by the Trustee shall be disposed of by the Trustee in accordance with its customary practice. SECTION 2.11. Persons Deemed Owners. Prior to due presentment of a Security for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name such Security is registered as the owner of such Security for the purpose of receiving payment of principal of the Security or the payment of any Redemption Price, Purchase Price or Change in Control Purchase Price in respect thereof, and interest thereon, for the purpose of conversion and for all other purposes whatsoever, whether or not such Security be overdue, and neither the Company, the Trustee nor any agent of the Company or the Trustee shall be affected by notice to the contrary. SECTION 2.12. Global Securities. (a) Notwithstanding any other provisions of this Indenture or the Securities, (A) transfers of a Global Security, in whole or in part, shall be made only in accordance with Section 2.06 and Section 2.12(a)(i), (B) transfer of a beneficial interest in a Global Security for a Certificated Security shall comply with Section 2.06 and Section 2.12(a)(ii) below, and (C) transfers of a Certificated Security shall comply with Section 2.06 and Section 2.12(a)(iii) and (iv) below. (i) Transfer of Global Security. A Global Security may not be transferred, in whole or in part, to any Person other than the Depositary or a nominee or any successor thereof, and no such transfer to any such other Person may be registered; provided that this clause (i) shall not prohibit any transfer of a Security that is issued in exchange for a Global Security but is not itself a Global Security. No transfer of a Security to any Person shall be effective under this Indenture or the Securities unless and until such Security has been registered in the name of such Person. Nothing in this Section 2.12(a)(i) shall 14

prohibit or render ineffective any transfer of a beneficial interest in a Global Security effected in accordance with the other provisions of this Section 2.12(a). (ii) Restrictions on Transfer of a Beneficial Interest in a Global Security for a Certificated Security. A beneficial interest in a Global Security may not be exchanged for a Certificated Security except upon satisfaction of the requirements set forth below. Upon receipt by the Trustee of a transfer of a beneficial interest in a Global Security in accordance with Applicable Procedures for a Certificated Security in the form satisfactory to the Trustee, together with: (a) so long as the Securities are Restricted Securities, certification, in the form set forth in Exhibit B-1; (b) if such beneficial interest in the Global Security is being transferred to an Institutional Accredited Investor in accordance with Sections 501(a)(1), (2), (3) or (7) of the Securities Act, certification in the form set forth in Exhibit B-2; (c) if a Restricted Security is being transferred (i) to an "institutional accredited investor" within the meaning of Rule 501(a)(1), (2), (3) or (7) under the Securities Act that is acquiring the Security for its own account, or for the account of such an institutional accredited investor for investment purposes and not with a view to, or for offer or sale in connection with, any distribution in violation of the Securities Act, (ii) in an offshore transaction in accordance with Rule 904 of Regulation S under the Securities Act or (iii) in reliance on another exemption from the registration requirements of the Securities Act, an opinion of counsel, certification and/or other information satisfactory to the Company and the Trustee; and (d) written instructions to the Trustee to make, or direct the Registrar to make, an adjustment on its books and records with respect to such Global Security to reflect a decrease in the aggregate Principal Amount at Maturity of the Securities represented by the Global Security, such instructions to contain information regarding the Depositary account to be credited with such decrease, then the Trustee shall cause, or direct the Registrar to cause, in accordance with the standing instructions and procedures existing between the Depositary and the Registrar, the aggregate Principal Amount at Maturity of Securities represented by the Global Security to be decreased by the aggregate Principal Amount at Maturity of the Certificated Security to be issued, shall authenticate and deliver such Certificated Security and shall debit or cause to be debited to the account of the Person specified in such instructions a beneficial interest in the Global Security equal to the Principal Amount at Maturity of the Certificated Security so issued. (iii) Transfer and Exchange of Certificated Securities. When Certificated Securities are presented to the Registrar with a request: (x) to register the transfer of such Certificated Securities; or (y) to exchange such Certificated Securities for an equal Principal Amount at Maturity of Certificated Securities of other authorized denominations, 15

the Registrar shall register the transfer or make the exchange as requested if its reasonable requirements for such transaction are met; provided, however, that the Certificated Securities surrendered for transfer or exchange: (a) shall be duly endorsed or accompanied by a written instrument of transfer in form reasonably satisfactory to the Company and the Registrar, duly executed by the Holder thereof or his attorney duly authorized in writing; and (b) so long as such Securities are Restricted Securities, such Securities are being transferred or exchanged pursuant to an effective registration statement under the Securities Act or pursuant to clause (A), (B) or (C) below, and are accompanied by the following additional information and documents, as applicable: (A) if such Certificated Securities are being delivered to the Registrar by a Holder for registration in the name of such Holder, without transfer, a certification from such Holder to that effect; or (B) if such Certificated Securities are being transferred to the Company, a certification to that effect; or (C) if such Certificated Security is being transferred to an Institutional Accredited Investor in accordance with Sections 501(a)(1), (2), (3) or (7) of the Securities Act, certification in the form set forth in Exhibit B-2; or (D) if a Certificated Security is being transferred (i) to an "institutional accredited investor" within the meaning of Rule 501(a)(1), (2), (3) or (7) under the Securities Act that is acquiring the Security for its own account, or for the account of such an institutional accredited investor for investment purposes and not with a view to, or for offer or sale in connection with, any distribution in violation of the Securities Act, (ii) in an offshore transaction in accordance with Rule 904 of Regulation S under the Securities Act or (iii) in reliance on another exemption from the registration requirements of the Securities Act, an opinion of counsel, certification and/or other information satisfactory to the Company and the Trustee. (iv) Restrictions on Transfer of a Certificated Security for a Beneficial Interest in a Global Security. A Certificated Security may not be exchanged for a beneficial interest in a Global Security except upon satisfaction of the requirements set forth below. Upon receipt by the Trustee of a Certificated Security, duly endorsed or accompanied by appropriate instruments of transfer, in form satisfactory to the Trustee, together with: (a) so long as the Securities are Restricted Securities, certification, in the form set forth in Exhibit B-1, that such Certificated Security is being transferred to a QIB in accordance with Rule 144A; and (b) written instructions directing the Trustee to make, or to direct the Registrar to make, an adjustment on its books and records with respect to such Global Security to reflect an increase in the aggregate Principal Amount at Maturity of the Securities 16

represented by the Global Security, such instructions to contain information regarding the Depositary account to be credited with such increase, then the Trustee shall cancel such Certificated Security and cause, or direct the Registrar to cause, in accordance with the standing instructions and procedures existing between the Depositary and the Registrar, the aggregate Principal Amount at Maturity of Securities represented by the Global Security to be increased by the aggregate Principal Amount at Maturity of the Certificated Security to be exchanged, and shall credit or cause to be credited to the account of the Person specified in such instructions a beneficial interest in the Global Security equal to the Principal Amount at Maturity of the Certificated Security so canceled. If no Global Securities are then outstanding, the Company shall issue and the Trustee shall authenticate, upon written order of the Company in the form of an Officers' Certificate, a new Global Security in the appropriate Principal Amount at Maturity. (b) Subject to the succeeding paragraph, every Security shall be subject to the restrictions on transfer provided in the Legend. Whenever any Restricted Security is presented or surrendered for registration of transfer or for exchange for a Security registered in a name other than that of the Holder, such Security must be accompanied by a certificate in substantially the form set forth in Exhibit B-1, dated the date of such surrender and signed by the Holder of such Security, as to compliance with such restrictions on transfer. The Registrar shall not be required to accept for such registration of transfer or exchange any Security not so accompanied by a properly completed certificate. (c) The restrictions imposed by the Legend upon the transferability of any Security shall cease and terminate when such Security has been sold pursuant to an effective registration statement under the Securities Act or transferred in compliance with Rule 144 under the Securities Act (or any successor provision thereto) or, if earlier, upon the expiration of the holding period applicable to sales thereof under Rule 144(k) under the Securities Act (or any successor provision). Any Security as to which such restrictions on transfer shall have expired in accordance with their terms or shall have terminated may, upon a surrender of such Security for exchange to the Registrar in accordance with the provisions of this Section 2.12 (accompanied, in the event that such restrictions on transfer have terminated by reason of a transfer in compliance with Rule 144 or any successor provision, by an opinion of counsel having substantial experience in practice under the Securities Act and otherwise reasonably acceptable to the Company, addressed to the Company and in form acceptable to the Company, to the effect that the transfer of such Security has been made in compliance with Rule 144 or such successor provision), be exchanged for a new Security, of like tenor and aggregate Principal Amount at Maturity, which shall not bear the restrictive Legend. The Company shall inform the Trustee of the effective date of any registration statement registering the Securities under the Securities Act. The Trustee shall not be liable for any action taken or omitted to be taken by it in good faith in accordance with the aforementioned opinion of counsel or registration statement. (d) As used in the preceding two paragraphs of this Section 2.12, the term "transfer" encompasses any sale, pledge, transfer, hypothecation or other disposition of any Security. 17

(e) The provisions of clauses (1), (2), (3) and (4) below shall apply only to Global Securities: (1) Notwithstanding any other provisions of this Indenture or the Securities, except as provided in Section 2.12(a)(ii), a Global Security shall not be exchanged in whole or in part for a Security registered in the name of any Person other than the Depositary or one or more nominees thereof, provided that a Global Security may be exchanged for Securities registered in the names of any person designated by the Depositary in the event that (i) the Depositary has notified the Company that it is unwilling or unable to continue as Depositary for such Global Security or such Depositary has ceased to be a "clearing agency" registered under the Exchange Act, and a successor Depositary is not appointed by the Company within 90 days or (ii) an Event of Default has occurred and is continuing with respect to the Securities. Any Global Security exchanged pursuant to clause (i) above shall be so exchanged in whole and not in part, and any Global Security exchanged pursuant to clause (ii) above may be exchanged in whole or from time to time in part as directed by the Depositary. Any Security issued in exchange for a Global Security or any portion thereof shall be a Global Security; provided that any such Security so issued that is registered in the name of a Person other than the Depositary or a nominee thereof shall not be a Global Security. (2) Securities issued in exchange for a Global Security or any portion thereof shall be issued in definitive, fully registered form, without interest coupons, shall have an aggregate Principal Amount at Maturity equal to that of such Global Security or portion thereof to be so exchanged, shall be registered in such names and be in such authorized denominations as the Depositary shall designate and shall bear the applicable legends provided for herein. Any Global Security to be exchanged in whole shall be surrendered by the Depositary to the Trustee, as Registrar. With regard to any Global Security to be exchanged in part, either such Global Security shall be so surrendered for exchange or, if the Trustee is acting as custodian for the Depositary or its nominee with respect to such Global Security, the Principal Amount at Maturity thereof shall be reduced, by an amount equal to the portion thereof to be so exchanged, by means of an appropriate adjustment made on the records of the Trustee. Upon any such surrender or adjustment, the Trustee shall authenticate and deliver the Security issuable on such exchange to or upon the order of the Depositary or an authorized representative thereof. (3) Subject to the provisions of clause (5) below, the registered Holder may grant proxies and otherwise authorize any Person, including Agent Members and persons that may hold interests through Agent Members, to take any action which a holder is entitled to take under this Indenture or the Securities. (4) In the event of the occurrence of any of the events specified in clause (1) above, the Company will promptly make available to the Trustee a reasonable supply of Certificated Securities in definitive, fully registered form, without interest coupons. (5) Neither any members of, or participants in, the Depositary ("Agent Members") nor any other Persons on whose behalf Agent Members may act shall have any rights under this Indenture with respect to any Global Security registered in the name 18

of the Depositary or any nominee thereof, or under any such Global Security, and the Depositary or such nominee, as the case may be, may be treated by the Company, the Trustee and any agent of the Company or the Trustee as the absolute owner and holder of such Global Security for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall prevent the Company, the Trustee or any agent of the Company or the Trustee from giving effect to any written certification, proxy or other authorization furnished by the Depositary or such nominee, as the case may be, or impair, as between the Depositary, its Agent Members and any other person on whose behalf an Agent Member may act, the operation of customary practices of such Persons governing the exercise of the rights of a holder of any Security. (6) The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance with any restrictions on transfer imposed under this Indenture or under applicable law with respect to any transfer of any interest in any Security (including any transfers between or among Agent members or beneficial owners of interests in any Global Security) other than to require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required by the terms of, this Indenture, and to examine the same to determine substantial compliance as to form with the express requirements hereof. SECTION 2.13. CUSIP Numbers. The Company in issuing the Securities may use "CUSIP" numbers (if then generally in use), and, if so, the Trustee shall use "CUSIP" numbers in notices of redemption as a convenience to Holders; provided that any such notice may state that no representation is made as to the correctness of such numbers either as printed on the Securities or as contained in any notice of a redemption and that reliance may be placed only on the other identification numbers printed on the Securities, and any such redemption shall not be affected by any defect in or omission of such numbers. The Company will promptly notify the Trustee of any change in the CUSIP numbers. ARTICLE III. REDEMPTION AND PURCHASES SECTION 3.01. Right to Redeem; Notices to Trustee. The Company, at its option, may redeem the Securities in accordance with the provisions of paragraphs 5 and 7 of the Securities. If the Company elects to redeem Securities pursuant to paragraph 5 of the Securities, it shall notify the Trustee in writing of the Redemption Date, the Principal Amount at Maturity of Securities to be redeemed and the Redemption Price. The Company shall give the notice to the Trustee provided for in this Section 3.01 by a Company Order, at least 25 days before the Redemption Date, unless a shorter notice shall be satisfactory to the Trustee). SECTION 3.02. Selection of Securities to Be Redeemed. If less than all the Securities are to be redeemed, the Trustee shall select the Securities to be redeemed pro rata or by lot or by any other method the Trustee considers fair and appropriate (so long as such method 19

is not prohibited by the rules of any stock exchange on which the Securities are then listed). The Trustee shall make the selection at least 15 days but not more than 60 days before the Redemption Date from outstanding Securities not previously called for redemption. The Trustee may select for redemption portions of the Principal Amount at Maturity of Securities that have denominations larger than $1,000. Securities and portions of them the Trustee selects shall be in Principal Amounts at Maturity of $1,000 or an integral multiple of $1,000. Provisions of this Indenture that apply to Securities called for redemption also apply to portions of Securities called for redemption. The Trustee shall notify the Company promptly of the Securities or portions of Securities to be redeemed. If any Security selected for partial redemption is converted in part before termination of the conversion right with respect to the portion of the Security so selected, the converted portion of such Security shall be deemed (so far as may be) to be the portion selected for redemption. Securities which have been converted during a selection of Securities to be redeemed may be treated by the Trustee as outstanding for the purpose of such selection. SECTION 3.03. Notice of Redemption. At least 15 days but not more than 60 days before a Redemption Date, the Company shall mail a notice of redemption by first-class mail, postage prepaid, to each Holder of Securities to be redeemed. The notice shall identify the Securities to be redeemed and shall at a minimum state: (a) the Redemption Date; (b) the Redemption Price; (c) the Conversion Rate; (d) the name and address of the Paying Agent and Conversion Agent; (e) that Securities called for redemption may be converted at any time before the close of business on the second Business Day immediately preceding the Redemption Date; (f) that Holders who want to convert Securities must satisfy the requirements set forth in paragraph 8 of the Securities; (g) that Securities called for redemption must be surrendered to the Paying Agent to collect the Redemption Price; (h) if fewer than all the outstanding Securities are to be redeemed, the certificate number and Principal Amounts at Maturity of the particular Securities to be redeemed; (i) that, unless the Company defaults in making payment of such Redemption Price, Original Issue Discount and interest, if any, on Securities called for redemption, and interest, if any, will cease to accrue on and after the Redemption Date; and (j) the CUSIP number of the Securities. 20

At the Company's request, the Trustee shall give the notice of redemption in the Company's name and at the Company's expense, provided that the Company makes such request at least three Business Days prior to such notice of redemption. SECTION 3.04. Effect of Notice of Redemption. Once notice of redemption is given, Securities called for redemption become due and payable on the Redemption Date and at the Redemption Price stated in the notice except for Securities which are converted in accordance with the terms of this Indenture. Upon surrender to the Paying Agent, such Securities shall be paid at the Redemption Price stated in the notice. SECTION 3.05. Deposit of Redemption Price. Prior to 10:00 a.m., New York City time on the Redemption Date, the Company shall deposit with the Paying Agent (or if the Company or a Subsidiary or an Affiliate of either of them is the Paying Agent, shall segregate and hold in trust) money sufficient to pay the Redemption Price, together with interest, if any, accrued and unpaid to the Redemption Date, of all Securities to be redeemed on that date other than Securities or portions of Securities called for redemption which on or prior thereto have been delivered by the Company to the Trustee for cancellation or have been converted. The Paying Agent shall as promptly as practicable return to the Company any money not required for that purpose because of conversion of Securities pursuant to Article 11. If such money is then held by the Company in trust and is not required for such purpose it shall be discharged from such trust. SECTION 3.06. Securities Redeemed in Part. Upon surrender of a Security that is redeemed in part, the Company shall execute and the Trustee shall authenticate and deliver to the Holder a new Security in an authorized denomination equal in Principal Amount at Maturity to the unredeemed portion of the Security surrendered. SECTION 3.07. Conversion Arrangement on Call for Redemption. In connection with any redemption of Securities, the Company may arrange for the purchase and conversion of any Securities called for redemption by an agreement with one or more investment banks or other purchasers to purchase such Securities by paying to the Trustee in trust for the Securityholders, on or prior to 10:00 a.m., New York City time on the Redemption Date, an amount that, together with any amounts deposited with the Trustee by the Company for the redemption of such Securities, is not less than the Redemption Price, together with interest, if any, accrued and unpaid to the Redemption Date, of such Securities. Notwithstanding anything to the contrary contained in this Article 3, the obligation of the Company to pay the Redemption Price of such Securities, including all accrued interest, if any, shall be deemed to be satisfied and discharged to the extent such amount is so paid by such purchasers. If such an agreement is entered into, any Securities not duly surrendered for conversion by the Holders thereof may, at the option of the Company, be deemed, to the fullest extent permitted by law, acquired by such purchasers from such Holders and (notwithstanding anything to the contrary contained in Article 11) surrendered by such purchasers for conversion, all as of immediately prior to the close of business on the Business Day prior to the Redemption Date, subject to payment of the above amount as aforesaid. The Trustee shall hold and pay to the Holders whose Securities are selected for redemption any such amount paid to it for purchase and conversion in the same manner as it would moneys deposited with it by the Company for the redemption of Securities. Without the Trustee's prior written consent, no arrangement between the Company and such purchasers for 21

the purchase and conversion of any Securities shall increase or otherwise affect any of the powers, duties, responsibilities or obligations of the Trustee as set forth in this Indenture, and the Company agrees to indemnify the Trustee from, and hold it harmless against, any loss, liability or expense arising out of or in connection with any such arrangement for the purchase and conversion of any Securities between the Company and such purchasers, including the costs and expenses incurred by the Trustee in the defense of any claim or liability arising out of or in connection with the exercise or performance of any of its powers, duties, responsibilities or obligations under this Indenture. SECTION 3.08. Purchase of Securities at Option of the Holder. (a) General. Securities shall be purchased by the Company pursuant to paragraph 6 of the Securities as of May 7, 2002, May 7, 2004, May 7, 2006, May 7, 2011 and May 7, 2016 (each, a "Purchase Date"), at the purchase price specified therein (each, a "Purchase Price"), at the option of the Holder thereof, upon: (1) delivery to the Paying Agent, by the Holder of a written notice of purchase (a "Purchase Notice") at any time from the opening of business on the date that is 30 Business Days prior to a Purchase Date until the close of business on such Purchase Date stating: (A) the certificate number of the Security which the Holder will deliver to be purchased, (B) the portion of the Principal Amount at Maturity of the Security which the Holder will deliver to be purchased, which portion must be in a Principal Amount at Maturity of $1,000 or an integral multiple thereof, (C) that such Security shall be purchased as of the Purchase Date pursuant to the terms and conditions specified in paragraph 6 of the Securities and in this Indenture, and (D) in the event the Company elects, pursuant to Section 3.08(b), to pay the Purchase Price to be paid as of such Purchase Date, in whole or in part, in shares of Common Stock but such portion of the Purchase Price shall ultimately be payable to such Holder entirely in cash because any of the conditions to payment of the Purchase Price in Common Stock is not satisfied prior to the close of business on such Purchase Date, as set forth in Section 3.08(d), whether such Holder elects (i) to withdraw such Purchase Notice as to some or all of the Securities to which such Purchase Notice relates (stating the Principal Amount at Maturity and certificate numbers of the Securities as to which such withdrawal shall relate), or (ii) to receive cash in respect of the entire Purchase Price for all Securities (or portions thereof) to which such Purchase Notice relates; and (2) delivery of such Security to the Paying Agent prior to, on or after the Purchase Date (together with all necessary endorsements) at the offices of the Paying Agent, such delivery being a condition to receipt by the Holder of the Purchase Price therefor; provided, however, that such Purchase Price shall be so paid pursuant to this Section 3.08 22

only if the Security so delivered to the Paying Agent shall conform in all respects to the description thereof in the related Purchase Notice, as determined by the Company. If a Holder, in such Holder's Purchase Notice and in any written notice of withdrawal delivered by such Holder pursuant to the terms of Section 3.10, fails to indicate such Holder's choice with respect to the election set forth in clause (D) of Section 3.08(a)(1), such Holder shall be deemed to have elected to receive cash in respect of the Purchase Price for all Securities subject to such Purchase Notice in the circumstances set forth in such clause (D). The Company shall purchase from the Holder thereof, pursuant to this Section 3.08, a portion of a Security if the Principal Amount at Maturity of such portion is $1,000 or an integral multiple of $1,000. Provisions of this Indenture that apply to the purchase of all of a Security also apply to the purchase of such portion of such Security. Any purchase by the Company contemplated pursuant to the provisions of this Section 3.08 shall be consummated by the delivery of the consideration to be received by the Holder promptly following the later of the Purchase Date and the time of delivery of the Security to the Paying Agent in accordance with this Section 3.08. Notwithstanding anything herein to the contrary, any Holder delivering to the Paying Agent the Purchase Notice contemplated by this Section 3.08(a) shall have the right to withdraw such Purchase Notice at any time prior to the close of business on the Purchase Date by delivery of a written notice of withdrawal to the Paying Agent in accordance with Section 3.10. The Paying Agent shall promptly notify the Company of the receipt by it of any Purchase Notice or written notice of withdrawal thereof. (b) Company's Right to Elect Manner of Payment of Purchase Price. The Securities to be purchased pursuant to Section 3.08(a) may be paid for, at the election of the Company, in U.S. legal tender ("cash") or Common Stock, or in any combination of cash and Common Stock, subject to the conditions set forth in Sections 3.08(c) and (d). The Company shall designate, in the Company Notice delivered pursuant to Section 3.08(e), whether the Company will purchase the Securities for cash or Common Stock, or, if a combination thereof, the percentages of the Purchase Price of Securities in respect of which it will pay in cash or Common Stock; provided that the Company will pay cash for fractional interests in Common Stock. For purposes of determining the existence of potential fractional interests, all Securities subject to purchase by the Company held by a Holder shall be considered together (no matter how many separate certificates are to be presented). Each Holder whose Securities are purchased pursuant to this Section 3.08 shall receive the same percentage of cash or Common Stock in payment of the Purchase Price for such Securities, except (i) as provided in Section 3.08(d) with regard to the payment of cash in lieu of fractional shares of Common Stock and (ii) in the event that the Company is unable to purchase the Securities of a Holder or Holders for Common Stock because any necessary qualifications or registrations of the Common Stock under applicable state securities laws cannot be obtained, the Company may purchase the Securities of such Holder or Holders for cash. The Company may not change its election with respect to the consideration (or components or percentages of components thereof) to be paid once the Company has given its Company Notice to Securityholders except pursuant to this Section 3.08(b) or pursuant to 23

Section 3.08(d) in the event of a failure to satisfy, prior to the close of business on the Purchase Date, any condition to the payment of the Purchase Price, in whole or in part, in Common Stock. At least three Business Days before the Company Notice Date, the Company shall deliver an Officers' Certificate to the Trustee specifying: (i) the manner of payment selected by the Company, (ii) the information required by Section 3.08(e), (iii) if the Company elects to pay the Purchase Price, or a specified percentage thereof, in Common Stock, that the conditions to such manner of payment set forth in Section 3.08(d) have been or will be complied with, and (iv) whether the Company desires the Trustee to give the Company Notice required by Section 3.08(e). (c) Purchase with Cash. On each Purchase Date, at the option of the Company, the Purchase Price of Securities in respect of which a Purchase Notice pursuant to Section 3.08(a) has been given, or a specified percentage thereof, may be paid by the Company with cash equal to the aggregate Purchase Price of such Securities. If the Company elects to purchase Securities with cash, the Company Notice, as provided in Section 3.08(e), shall be sent to Holders (and to beneficial owners as required by applicable law) not less than 20 Business Days prior to such Purchase Date (the "Company Notice Date"). (d) Payment by Issuance of Common Stock. On each Purchase Date, at the option of the Company, the Purchase Price of Securities in respect of which a Purchase Notice pursuant to Section 3.08(a) has been given, or a specified percentage thereof, may be paid by the Company by the issuance of a number of shares of Common Stock equal to the quotient obtained by dividing (i) the amount of cash to which the Securityholders would have been entitled had the Company elected to pay all or such specified percentage, as the case may be, of the Purchase Price of such Securities in cash by (ii) the Market Price of a share of Common Stock, subject to the next succeeding paragraph. The Company will not issue a fractional share of Common Stock in payment of the Purchase Price. Instead the Company will pay cash for the current market value of the fractional share. The current market value of a fraction of a share shall be determined by multiplying the Market Price by such fraction and rounding the product to the nearest whole cent. It is understood that if a Holder elects to have more than one Security purchased, the number of shares of Common Stock shall be based on the aggregate amount of Securities to be purchased. If the Company elects to purchase the Securities by the issuance of shares of Common Stock, the Company Notice, as provided in Section 3.08(e), shall be sent to the Holders (and to beneficial owners as required by applicable law) not later than the Company Notice Date. The Company's right to exercise its election to purchase the Securities pursuant to Section 3.08 through the issuance of shares of Common Stock shall be conditioned upon: 24

(i) the Company's not having given its Company Notice of an election to pay entirely in cash and its giving of timely Company Notice of election to purchase all or a specified percentage of the Securities with Common Stock as provided herein; (ii) the registration of the shares of Common Stock to be issued in respect of the payment of the Purchase Price under the Securities Act of 1933, as amended (the "Securities Act"), or the Securities Exchange Act of 1934, as amended (the "Exchange Act"), in each case, if required; (iii) any necessary qualification or registration under applicable state securities laws or the availability of an exemption from such qualification and registration; and (iv) the receipt by the Trustee of an Officers' Certificate and an Opinion of Counsel each stating that (A) the terms of the issuance of the Common Stock are in conformity with this Indenture and (B) the shares of Common Stock to be issued by the Company in payment of the Purchase Price in respect of Securities have been duly authorized and, when issued and delivered pursuant to the terms of this Indenture in payment of the Purchase Price in respect of the Securities, will be validly issued, fully paid and non-assessable and, to the best of such counsel's knowledge, free from preemptive rights, and, in the case of such Officers' Certificate, stating that conditions (i), (ii) and (iii) above and the condition set forth in the second succeeding sentence have been satisfied and, in the case of such Opinion of Counsel, stating that conditions (ii) and (iii) above have been satisfied. Such Officers' Certificate shall also set forth the number of shares of Common Stock to be issued for each $1,000 Principal Amount at Maturity of Securities and the Sale Price of a share of Common Stock on each trading day during the period commencing on the first trading day of the period during which the Market Price is calculated and ending on the applicable Purchase Date. The Company may pay the Purchase Price (or any portion thereof) in Common Stock only if the information necessary to calculate the Market Price is published in a daily newspaper of national circulation. If the foregoing conditions are not satisfied with respect to a Holder or Holders prior to the close of business on the Purchase Date and the Company has elected to purchase the Securities pursuant to this Section 3.08 through the issuance of shares of Common Stock, the Company shall pay the entire Purchase Price of the Securities of such Holder or Holders in cash. The "Market Price" means the average of the Sale Prices of the Common Stock for the five trading day period ending on (if the third Business Day prior to the applicable Purchase Date is a trading day, or if not, then on the last trading day prior to) the third Business Day prior to the applicable Purchase Date, appropriately adjusted to take into account the occurrence, during the period commencing on the first of such trading days during such five trading day period and ending on such Purchase Date, of any event described in Section 11.06, 11.07 or 11.08; subject, however, to the conditions set forth in Sections 11.09 and 11.10. The "Sale Price" of the Common Stock on any date means the closing per share sale price (or, if no closing sale price is reported, the average of the bid and ask prices or, if more than one in either case, the average of the average bid and average ask prices) on such date as reported in 25

the composite transactions for the principal United States securities exchange on which the Common Stock is traded or, if the Common Stock is not listed on a United States national or regional securities exchange, as reported by the National Association of Securities Dealers Automated Quotation System. (e) Notice of Election. The Company's notice of election to purchase with cash or Common Stock or any combination thereof shall be sent to the Holders (and to beneficial owners as required by applicable law) in the manner provided in Section 12.02 at the time specified in Section 3.08(c) or (d), as applicable (the "Company Notice"). Such Company Notice shall state the manner of payment elected and shall contain the following information: In the event the Company has elected to pay the Purchase Price (or a specified percentage thereof) with Common Stock, the Company Notice shall: (i) state that each Holder will receive Common Stock with a Market Price determined as of a specified date prior to the Purchase Date equal to such specified percentage of the Purchase Price of the Securities held by such Holder (except any cash amount to be paid in lieu of fractional shares); (ii) set forth the method of calculating the Market Price of the Common Stock; and (iii) state that because the Market Price of Common Stock will be determined prior to the Purchase Date, Holders will bear the market risk with respect to the value of the Common Stock to be received from the date such Market Price is determined to the Purchase Date. In any case, each Company Notice shall include a form of Purchase Notice to be completed by a Securityholder and shall state: (i) the Purchase Price and the Conversion Rate; (ii) the name and address of the Paying Agent and the Conversion Agent; (iii) that Securities as to which a Purchase Notice has been given may be converted pursuant to Article 11 hereof only if the applicable Purchase Notice has been withdrawn in accordance with the terms of this Indenture; (iv) that Securities must be surrendered to the Paying Agent to collect payment of the Purchase Price; (v) that the Purchase Price for any Security as to which a Purchase Notice has been given and not withdrawn will be paid promptly following the later of the Purchase Date and the time of surrender of such Security as described in clause (iv) above; (vi) the procedures the Holder must follow to exercise rights under Section 3.08 and a brief description of those rights; 26

(vii) briefly, the conversion rights of the Securities; and (viii) the procedures for withdrawing a Purchase Notice (including, without limitation, for a conditional withdrawal pursuant to the terms of Section 3.08(a)(1)(D) or Section 3.10). At the Company's request, the Trustee shall give such Company Notice in the Company's name and at the Company's expense; provided, however, that, in all cases, the text of such Company Notice shall be prepared by the Company. Upon determination of the actual number of shares of Common Stock to be issued for each $1,000 Principal Amount at Maturity of Securities, the Company will publish such determination on the Company's Web site. (f) Covenants of the Company. All shares of Common Stock delivered upon purchase of the Securities shall be newly issued shares or treasury shares, shall be duly authorized, validly issued, fully paid and nonassessable and shall be free from preemptive rights and free of any lien or adverse claim. The Company shall use its best efforts to list or cause to have quoted any shares of Common Stock to be issued to purchase Securities on each national securities exchange or over-the-counter or other domestic market on which the Common Stock is then listed or quoted. (g) Procedure upon Purchase. The Company shall deposit cash (in respect of a cash purchase under Section 3.08(c) or for fractional interests, as applicable) or shares of Common Stock, or a combination thereof, as applicable, at the time and in the manner as provided in Section 3.11, sufficient to pay the aggregate Purchase Price of all Securities to be purchased pursuant to this Section 3.08. As soon as practicable after the Purchase Date, the Company shall deliver to each Holder entitled to receive Common Stock through the Paying Agent, a certificate for the number of full shares of Common Stock issuable in payment of the Purchase Price and cash in lieu of any fractional interests. The person in whose name the certificate for Common Stock is registered shall be treated as a holder of record of shares of Common Stock on the Business Day following the Purchase Date. Subject to Section 3.08(d), no payment or adjustment will be made for dividends on the Common Stock the record date for which occurred on or prior to the Purchase Date. (h) Taxes. If a Holder of a Security is paid in Common Stock, the Company shall pay any documentary, stamp or similar issue or transfer tax due on such issue of shares of Common Stock. However, the Holder shall pay any such tax which is due because the Holder requests the shares of Common Stock to be issued in a name other than the Holder's name. The Paying Agent may refuse to deliver the certificates representing the Common Stock being issued in a name other than the Holder's name until the Paying Agent receives a sum sufficient to pay any tax which will be due because the shares of Common Stock are to be issued in a name other than the Holder's name. Nothing herein shall preclude any income tax withholding required by law or regulations. SECTION 3.09. Purchase of Securities at Option of the Holder upon Change in Control. (a) If on or prior to May 7, 2006 there shall have occurred a Change in Control, all or 27

a portion of the Securities of any Holder shall be purchased by the Company, at the option of the Holder thereof, at the purchase price specified in paragraph 6 of the Securities (the "Change in Control Purchase Price"), as of the date that is 35 Business Days after the occurrence of the Change in Control (the "Change in Control Purchase Date"), subject to satisfaction by or on behalf of the Holder of the requirements set forth in Section 3.09(c). A "Change in Control" shall be deemed to have occurred at such time as either of the following events shall occur: (1) There shall be consummated any consolidation or merger of the Company pursuant to which the Common Stock would be converted into cash, securities or other property, in each case other than a consolidation or merger of the Company in which the holders of the Common Stock immediately prior to the consolidation or merger have, directly or indirectly, at least a majority of the total voting power in the aggregate of all classes of capital stock of the continuing or surviving corporation immediately after such consolidation or merger; or (2) There is a report filed on Schedule 13D or TO (or any successor schedule, form or report) pursuant to the Exchange Act, disclosing that any person, including such person's Affiliates or Associates (for the purposes of this Section 3.09 only, as the term "person" is used in Section 13(d)(3) or Section 14(d)(2) of the Exchange Act) has become the beneficial owner (as the term "beneficial owner" is defined under Rule 13d-3 or any successor rule or regulation promulgated under the Exchange Act) of 50% or more of the voting power of the Common Stock or other Capital Stock into which the Common Stock is reclassified or changed; provided, however, that a person shall not be deemed beneficial owner of, or to own beneficially, (A) any securities tendered pursuant to a tender or exchange offer made by or on behalf of such person or any of such person's Affiliates or Associates until such tendered securities are accepted for purchase or exchange thereunder, or (B) any securities if such beneficial ownership (1) arises solely as a result of a revocable proxy delivered in response to a proxy or consent solicitation made pursuant to the applicable rules and regulations under the Exchange Act, and (2) is not also then reportable on Schedule 13D (or any successor schedule) under the Exchange Act. Notwithstanding the foregoing provisions of this Section 3.09, a Change in Control shall not be deemed to have occurred by virtue of the Company, any Subsidiary, any employee stock ownership plan or any other employee benefit plan of the Company or any Subsidiary, or any person holding Common Stock for or pursuant to the terms of any such employee benefit plan, filing or becoming obligated to file a report under or in response to Schedule 13D or Schedule TO (or any successor schedule, form or report) under the Exchange Act disclosing beneficial ownership by it of shares of Common Stock, whether in excess of 50% or otherwise. "Associate" shall have the meaning ascribed to such term in Rule 12b-2 of the General Rules and Regulations under the Exchange Act, as in effect on the date hereof. (b) Within 15 Business Days after the occurrence of a Change in Control, the Company shall mail a written notice of Change in Control by first-class mail to the Trustee and to each 28

Holder (and to beneficial owners as required by applicable law). The notice shall include a form of Change in Control Purchase Notice to be completed by the Securityholder and shall state: (1) briefly, the events causing a Change in Control and the date of such Change in Control; (2) the date by which the Change in Control Purchase Notice pursuant to this Section 3.09 must be given; (3) the Change in Control Purchase Date; (4) the Change in Control Purchase Price; (5) the name and address of the Paying Agent and the Conversion Agent; (6) the Conversion Rate and any adjustments thereto; (7) that Securities as to which a Change in Control Purchase Notice has been given by a Holder may be converted pursuant to Article 11 hereof only if the Change in Control Purchase Notice has been withdrawn in accordance with the terms of this Indenture; (8) that Securities must be surrendered to the Paying Agent to collect payment of the Change in Control Purchase Price; (9) that the Change in Control Purchase Price for any Security as to which a Change in Control Purchase Notice has been duly given and not withdrawn will be paid promptly following the later of the Change in Control Purchase Date and the time of surrender of such Security as described in clause (8) above; (10) briefly, the procedures the Holder must follow to exercise rights under this Section 3.09; (11) briefly, the conversion rights of the Securities; and (12) the procedures for withdrawing a Change in Control Purchase Notice. (c) A Holder may exercise its rights specified in Section 3.09(a) upon delivery of a written notice of purchase (a "Change in Control Purchase Notice") to the Paying Agent at any time prior to the close of business on the Change in Control Purchase Date, stating: (1) the certificate number of the Security which the Holder will deliver to be purchased; (2) the portion of the Principal Amount at Maturity of the Security which the Holder will deliver to be purchased, which portion must be $1,000 or an integral multiple thereof; and 29

(3) that such Security shall be purchased pursuant to the terms and conditions specified in paragraph 6 of the Securities. The delivery of such Security to the Paying Agent prior to, on or after the Change in Control Purchase Date (together with all necessary endorsements) at the offices of the Paying Agent shall be a condition to the receipt by the Holder of the Change in Control Purchase Price therefor; provided, however, that such Change in Control Purchase Price shall be so paid pursuant to this Section 3.09 only if the Security so delivered to the Paying Agent shall conform in all respects to the description thereof set forth in the related Change in Control Purchase Notice. The Company shall purchase from the Holder thereof, pursuant to this Section 3.09, a portion of a Security if the Principal Amount at Maturity of such portion is $1,000 or an integral multiple of $1,000. Provisions of this Indenture that apply to the purchase of all of a Security also apply to the purchase of such portion of such Security. Any purchase by the Company contemplated pursuant to the provisions of this Section 3.09 shall be consummated by the delivery of the consideration to be received by the Holder promptly following the later of the Change in Control Purchase Date and the time of delivery of the Security to the Paying Agent in accordance with this Section 3.09. Notwithstanding anything herein to the contrary, any Holder delivering to the Paying Agent the Change in Control Purchase Notice contemplated by this Section 3.09(c) shall have the right to withdraw such Change in Control Purchase Notice at any time prior to the close of business on the Change in Control Purchase Date by delivery of a written notice of withdrawal to the Paying Agent in accordance with Section 3.10. The Paying Agent shall promptly notify the Company of the receipt by it of any Change in Control Purchase Notice or written withdrawal thereof. SECTION 3.10. Effect of Purchase Notice or Change in Control Purchase Notice. Upon receipt by the Paying Agent of the Purchase Notice or Change in Control Purchase Notice specified in Section 3.08(a) or Section 3.09(c), as applicable, the Holder of the Security in respect of which such Purchase Notice or Change in Control Purchase Notice, as the case may be, was given shall (unless such Purchase Notice or Change in Control Purchase Notice is withdrawn as specified in the following two paragraphs) thereafter be entitled to receive solely the Purchase Price or Change in Control Purchase Price, as the case may be, with respect to such Security. Such Purchase Price or Change in Control Purchase Price shall be paid to such Holder, subject to receipts of funds and/or securities by the Paying Agent, promptly following the later of (x) the Purchase Date or the Change in Control Purchase Date, as the case may be, with respect to such Security (provided the conditions in Section 3.08(a) or Section 3.09(c), as applicable, have been satisfied) and (y) the time of delivery of such Security to the Paying Agent by the Holder thereof in the manner required by Section 3.08(a) or Section 3.09(c), as applicable. Securities in respect of which a Purchase Notice or Change in Control Purchase Notice, as the case may be, has been given by the Holder thereof may not be converted pursuant to Article 11 hereof on or after the date of the delivery of such Purchase Notice or Change in Control Purchase Notice, as the case may be, unless such Purchase Notice or Change in Control Purchase Notice, 30

as the case may be, has first been validly withdrawn as specified in the following two paragraphs. A Purchase Notice or Change in Control Purchase Notice, as the case may be, may be withdrawn by means of a written notice of withdrawal delivered to the office of the Paying Agent in accordance with the Purchase Notice or Change in Control Purchase Notice, as the case may be, at any time prior to the close of business on the Purchase Date or the Change in Control Purchase Date, as the case may be, specifying: (1) the certificate number of the Security in respect of which such notice of withdrawal is being submitted, (2) the Principal Amount at Maturity of the Security with respect to which such notice of withdrawal is being submitted, and (3) the Principal Amount at Maturity, if any, of such Security which remains subject to the original Purchase Notice or Change in Control Purchase Notice, as the case may be, and which has been or will be delivered for purchase by the Company. A written notice of withdrawal of a Purchase Notice may be in the form set forth in the preceding paragraph or may be in the form of a conditional withdrawal contained in a Purchase Notice pursuant to the terms of Section 3.08(a)(1)(D). There shall be no purchase of any Securities pursuant to Section 3.08 (other than through the issuance of Common Stock in payment of the Purchase Price, including cash in lieu of fractional shares) or 3.09 if there has occurred (prior to, on or after, as the case may be, the giving, by the Holders of such Securities, of the required Purchase Notice or Change in Control Purchase Notice, as the case may be) and is continuing an Event of Default (other than a default in the payment of the Purchase Price or Change in Control Purchase Price, as the case may be, with respect to such Securities). The Paying Agent will promptly return to the respective Holders thereof any Securities (x) with respect to which a Purchase Notice or Change in Control Purchase Notice, as the case may be, has been withdrawn in compliance with this Indenture, or (y) held by it during the continuance of an Event of Default (other than a default in the payment of the Purchase Price or Change in Control Purchase Price, as the case may be, with respect to such Securities) in which case, upon such return, the Purchase Notice or Change in Control Purchase Notice with respect thereto shall be deemed to have been withdrawn. SECTION 3.11. Deposit of Purchase Price or Change in Control Purchase Price. Prior to 10:00 a.m. (New York City time) on the Business Day prior to the Purchase Date or the Change in Control Purchase Date, as the case may be, the Company shall deposit with the Trustee or with the Paying Agent (or, if the Company or a Subsidiary or an Affiliate of either of them is acting as the Paying Agent, shall segregate and hold in trust as provided in Section 2.04) an amount of money (in immediately available funds if deposited on such Business Day) or Common Stock, if permitted hereunder, sufficient to pay the aggregate Purchase Price or Change in Control Purchase Price, as the case may be, of all the Securities or portions thereof which are to be purchased as of the Purchase Date or Change in Control Purchase Date, as the case may be. 31

SECTION 3.12. Securities Purchased in Part. Any Security which is to be purchased only in part shall be surrendered at the office of the Paying Agent (with, if the Company or the Trustee so requires, due endorsement by, or a written instrument of transfer in form satisfactory to the Company and the Trustee duly executed by, the Holder thereof or such Holder's attorney duly authorized in writing) and the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such Security, without service charge, a new Security or Securities, of any authorized denomination as requested by such Holder in aggregate Principal Amount at Maturity equal to, and in exchange for, the portion of the Principal Amount at Maturity of the Security so surrendered which is not purchased. SECTION 3.13. Covenant to Comply With Securities Laws Upon Purchase of Securities. In connection with any offer to purchase or purchase of Securities under Section 3.08 or 3.09 hereof (provided that such offer or purchase constitutes an "issuer tender offer" for purposes of Rule 13e-4 (which term, as used herein, includes any successor provision thereto) under the Exchange Act at the time of such offer or purchase), the Company shall (i) comply with Rule 13e-4 and Rule 14e-1 and any other tender offer rules under the Exchange Act which may then be applicable, (ii) file the related Schedule TO (or any successor schedule, form or report) or any other schedule required under the Exchange Act, and (iii) otherwise comply with all federal and state securities laws so as to permit the rights and obligations under Sections 3.08 and 3.09 to be exercised in the time and in the manner specified in Sections 3.08 and 3.09. SECTION 3.14. Repayment to the Company. The Trustee and the Paying Agent shall return to the Company any cash or shares of Common Stock that remain unclaimed as provided in paragraph 13 of the Securities, together with interest or dividends, if any, thereon (subject to the provisions of Section 7.01(f)), held by them for the payment of the Purchase Price or Change in Control Purchase Price, as the case may be. To the extent that the aggregate amount of cash or shares of Common Stock deposited by the Company pursuant to Section 3.11 exceeds the aggregate Purchase Price or Change in Control Purchase Price, as the case may be, of the Securities or portions thereof which the Company is obligated to purchase as of the Purchase Date or Change in Control Purchase Date, as the case may be, then promptly after the Business Day following the Purchase Date or Change in Control Purchase Date, as the case may be, the Trustee shall return any such excess to the Company together with interest or dividends, if any, thereon (subject to the provisions of Section 7.01(f)). ARTICLE IV. COVENANTS SECTION 4.01. Payment of Securities. The Company shall promptly make all payments in respect of the Securities on the dates and in the manner provided in the Securities or pursuant to this Indenture. Any amounts to be given to the Trustee or Paying Agent shall be deposited with the Trustee or Paying Agent by 10:00 a.m. New York City time by the Company at the latest on the day such payment is due. Principal Amount at Maturity, Restated Principal Amount, Issue Price plus accrued Original Issue Discount, Redemption Price, Purchase Price, Change in Control Purchase Price and interest, if any, shall be considered paid on the applicable date due if on such date (or, in the case of a Purchase Price or Change in Control Purchase Price, 32

on the Business Day following the applicable Purchase Date or Change in Control Purchase Date, as the case may be) the Trustee or the Paying Agent holds, in accordance with this Indenture, money or securities, if permitted hereunder, sufficient to pay all such amounts then due. The Company shall, to the extent permitted by law, pay interest on overdue amounts at the rate per annum set forth in paragraph 1 of the Securities, compounded semiannually, which interest shall accrue from the date such overdue amount was originally due to the date payment of such amount, including interest thereon, has been made or duly provided for. All such interest shall be payable on demand. The accrual of such interest on overdue amounts shall be in lieu of, and not in addition to, the continued accrual of Original Issue Discount. SECTION 4.02. SEC and Other Reports. The Company shall file with the Trustee, within 15 days after it files such annual and quarterly reports, information, documents and other reports with the SEC, copies of its annual report and of the information, documents and other reports (or copies of such portions of any of the foregoing as the SEC may by rules and regulations prescribe) which the Company is required to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act. In the event the Company is at any time no longer subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act, it shall continue to provide the Trustee with reports containing substantially the same information as would have been required to be filed with the SEC had the Company continued to have been subject to such reporting requirements. In such event, such reports shall be provided at the times the Company would have been required to provide reports had it continued to have been subject to such reporting requirements. The Company also shall comply with the other provisions of TIA Section 314(a). Delivery of such reports, information and documents to the Trustee is for informational purposes only and the Trustee's receipt of such shall not constitute constructive notice of any information contained therein or determinable from information contained therein, including the Company's compliance with any of its covenants hereunder (as to which the Trustee is entitled to rely exclusively on Officers' Certificates). SECTION 4.03. Compliance Certificate. The Company shall deliver to the Trustee within 120 days after the end of each fiscal year of the Company (beginning with the fiscal year ending on December 31, 2001) an Officers' Certificate, one of the signers of which shall be the principal financial, principal accounting or principal executive officer of the Company, stating whether or not to the best knowledge of the signers thereof the Company is in default in the performance and observance of any of the terms, provisions and conditions of this Indenture (without regard to any period of grace or requirement of notice provided hereunder) and if the Company shall be in default, specifying all such defaults and the nature and status thereof of which they may have knowledge. SECTION 4.04. Further Instruments and Acts. The Company will execute and deliver such further instruments and do such further acts as may be reasonably necessary or proper or as the Trustee may request to carry out more effectively the purposes of this Indenture. 33

SECTION 4.05. Maintenance of Office or Agency. The Company will maintain in the Borough of Manhattan, The City of New York, an office or agency of the Trustee, Registrar, Paying Agent and Conversion Agent where Securities may be presented or surrendered for payment, where Securities may be surrendered for registration of transfer, exchange, purchase, redemption or conversion and where notices and demands to or upon the Company in respect of the Securities and this Indenture may be served. The office of the Trustee, at One World Trade Center, Suite 4711, New York, NY 10048, shall initially be such office or agency for all of the aforesaid purposes. The Company shall give prompt written notice to the Trustee of the location, and of any change in the location, of any such office or agency (other than a change in the location of the office of the Trustee). If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the address of the Trustee set forth in Section 12.02. The Company may also from time to time designate one or more other offices or agencies where the Securities may be presented or surrendered for any or all such purposes and may from time to time rescind such designations; provided, however, that no such designation or rescission shall in any manner relieve the Company of its obligation to maintain an office or agency in the Borough of Manhattan, The City of New York, for such purposes. SECTION 4.06. Delivery of Certain Information. At any time when the Company is not subject to Section 13 or 15(d) of the Exchange Act, upon the request of a holder or any beneficial holder of Securities or shares of Common Stock issued upon conversion thereof, the Company will promptly furnish or cause to be furnished Rule 144A Information (as defined below) to such Holder or any beneficial holder of Securities or holder of shares of Common Stock issued upon conversion of Securities, or to a prospective purchaser of any such security designated by any such holder, as the case may be, to the extent required to permit compliance by such Holder or holder with Rule 144A under the Securities Act in connection with the resale of any such security. "Rule 144A Information" shall be such information as is specified pursuant to Rule 144A(d)(4) under the Securities Act. SECTION 4.07. Calculation of Original Issue Discount. The Company shall file with the Trustee promptly at the end of each calendar year (i) a written notice specifying the amount of original issue discount (including daily rates and accrual periods) accrued on Outstanding Securities as of the end of such year and (ii) such other specific information relating to such original issue discount as may then be relevant under the Internal Revenue Code of 1986, as amended from time to time. ARTICLE V. SUCCESSOR CORPORATION SECTION 5.01. When Company May Merge or Transfer Assets. The Company shall not consolidate with or merge with or into any other person or convey, transfer or lease its properties and assets substantially as an entirety to any person, unless: 34

(a) either (1) the Company shall be the continuing corporation or (2) the person (if other than the Company) formed by such consolidation or into which the Company is merged or the person which acquires by conveyance, transfer or lease the properties and assets of the Company substantially as an entirety (i) shall be organized and validly existing under the laws of the United States or any State thereof or the District of Columbia and (ii) shall expressly assume, by an indenture supplemental hereto, executed and delivered to the Trustee, in form reasonably satisfactory to the Trustee, all of the obligations of the Company under the Securities and this Indenture; (b) immediately after giving effect to such transaction, no Default or Event of Default shall have occurred and be continuing; and (c) the Company shall have delivered to the Trustee an Officers' Certificate and an Opinion of Counsel, each stating that such consolidation, merger, conveyance, transfer or lease and, if a supplemental indenture is required in connection with such transaction, such supplemental indenture, comply with this Article 5 and that all conditions precedent herein provided for relating to such transaction have been satisfied. For purposes of the foregoing, the transfer (by lease, assignment, sale or otherwise) of the properties and assets of one or more Subsidiaries (other than to the Company or another Subsidiary), which, if such assets were owned by the Company, would constitute all or substantially all of the properties and assets of the Company, shall be deemed to be the transfer of all or substantially all of the properties and assets of the Company. The successor person formed by such consolidation or into which the Company is merged or the successor person to which such conveyance, transfer or lease is made shall succeed to, and be substituted for, and may exercise every right and power of, the Company under this Indenture with the same effect as if such successor had been named as the Company herein; and thereafter, except in the case of a lease and obligations the Company may have under a supplemental indenture pursuant to Section 11.14, the Company shall be discharged from all obligations and covenants under this Indenture and the Securities. Subject to Section 9.06, the Company, the Trustee and the successor person shall enter into a supplemental indenture to evidence the succession and substitution of such successor person and such discharge and release of the Company. ARTICLE VI. DEFAULTS AND REMEDIES SECTION 6.01. Events of Default. An "Event of Default" occurs if: (a) after exercise of its option pursuant to Section 10.01 hereof following a Tax Event, the Company defaults in the payment of interest upon any Security when such interest becomes due and payable, and such default continues for a period of 30 days; (b) the Company defaults in the payment of the Principal Amount at Maturity (or, if the Securities have been converted to semiannual coupon notes following a Tax Event pursuant to 35

Article 10, the Restated Principal Amount), Issue Price plus accrued Original Issue Discount, Redemption Price, Purchase Price or Change in Control Purchase Price on any Security when the same becomes due and payable at its Stated Maturity, upon redemption, upon declaration, when due for purchase by the Company or otherwise; (c) the Company fails to comply with any of its agreements in the Securities or this Indenture (other than those referred to in clauses (1) and (2) above) and such failure continues for 30 days after receipt by the Company of a Notice of Default; (d) default under any Debt, which default results in such Debt becoming or being declared due and payable prior to the date on which it would otherwise have become due and payable, and the principal amount of all Debt so accelerated, together with all Debt due and payable but not paid prior to the end of any grace period, is $30,000,000 or more, and such acceleration has not been rescinded or annulled within a period of 30 days after receipt by the Company of a Notice of Default; provided, however, that if any such default shall be cured, waived, rescinded or annulled, then the Event of Default by reason thereof shall be deemed not to have occurred; (e) the Company shall fail within 60 days to pay, bond or otherwise discharge any uninsured judgment or court order in excess of $30,000,000 which is not stayed; (f) the Company pursuant to or under or within the meaning of any Bankruptcy Law: (1) commences a voluntary case or proceeding; (2) consents to the entry of an order for relief against it in an involuntary case or proceeding or the commencement of any case against it; (3) consents to the appointment of a Custodian of it or for any substantial part of its property; (4) makes a general assignment for the benefit of its creditors; (5) files a petition in bankruptcy or answer or consent seeking reorganization or relief; or (6) consents to the filing of such petition or the appointment of or taking possession by a Custodian; or (g) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that: (1) is for relief against the Company in an involuntary case or proceeding, or adjudicates the Company insolvent or bankrupt; (2) appoints a Custodian of the Company or for any substantial part of the property of the Company; or 36

(3) orders the winding up or liquidation of the Company; and the order or decree remains unstayed and in effect for 60 days. Bankruptcy Law" means Title 11, United States Code, or any similar Federal or state law for the relief of debtors. "Custodian" means any receiver, trustee, assignee, liquidator, custodian or similar official under any Bankruptcy Law. A Default under clause (c) or clause (d) above is not an Event of Default until the Trustee notifies the Company, or the Holders of at least 25% in aggregate Principal Amount at Maturity of the Securities at the time outstanding notify the Company and the Trustee, of the Default and the Company does not cure such Default (and such Default is not waived) within the time specified in clause (3) or clause (4) above after actual receipt of such notice. Any such notice must specify the Default, demand that it be remedied and state that such notice is a "Notice of Default". The Company shall deliver to the Trustee, within 30 days after it becomes aware of the occurrence thereof, written notice of any event which with the giving of notice or the lapse of time, or both, would become an Event of Default under clause (3) or clause (4) above, its status and what action the Company is taking or proposes to take with respect thereto. SECTION 6.02. Acceleration. If an Event of Default (other than an Event of Default specified in Section 6.01(f) or (g)) occurs and is continuing, the Trustee by notice to the Company, or the Holders of at least 25% in aggregate Principal Amount at Maturity of the Securities at the time outstanding by notice to the Company and the Trustee, may declare the Issue Price plus accrued Original Issue Discount (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount, plus accrued interest) through the date of declaration on all the Securities to be immediately due and payable. Upon such a declaration, such Issue Price plus accrued Original Issue Discount shall be due and payable immediately. If an Event of Default specified in Section 6.01(f) or (g) occurs and is continuing, the Issue Price plus accrued Original Issue Discount (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount, plus accrued interest) on all the Securities shall become and be immediately due and payable without any declaration or other act on the part of the Trustee or any Securityholders. The Holders of a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding, by notice to the Trustee (and without notice to any other Securityholder) may rescind an acceleration and its consequences if the rescission would not conflict with any judgment or decree and if all existing Events of Default have been cured or waived except nonpayment of the Issue Price plus accrued Original Issue Discount (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount, plus accrued interest) that have become due solely as a result of acceleration and if all amounts due to the Trustee under Section 7.07 have been paid. No such rescission shall affect any subsequent Default or impair any right consequent thereto. 37

SECTION 6.03. Other Remedies. If an Event of Default occurs and is continuing, the Trustee may pursue any available remedy to collect the payment of the Issue Price plus accrued Original Issue Discount (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount, plus accrued interest) on the Securities or to enforce the performance of any provision of the Securities or this Indenture. The Trustee may maintain a proceeding even if the Trustee does not possess any of the Securities or does not produce any of the Securities in the proceeding. A delay or omission by the Trustee or any Securityholder in exercising any right or remedy accruing upon an Event of Default shall not impair the right or remedy or constitute a waiver of, or acquiescence in, the Event of Default. No remedy is exclusive of any other remedy. All available remedies are cumulative. SECTION 6.04. Waiver of Past Defaults. The Holders of a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding, by notice to the Trustee (and without notice to any other Securityholder), may waive an existing Default and its consequences except (1) an Event of Default described in Section 6.01(a) or (b), (2) a Default in respect of a provision that under Section 9.02 cannot be amended without the consent of each Securityholder affected or (3) a Default which constitutes a failure to convert any Security in accordance with the terms of Article 11. When a Default is waived, it is deemed cured, but no such waiver shall extend to any subsequent or other Default or impair any consequent right. This Section 6.04 shall be in lieu of Section 316(a)(1)(B) of the TIA and such Section 316(a)(1)(B) is hereby expressly excluded from this Indenture, as permitted by the TIA. SECTION 6.05. Control by Majority. The Holders of a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding may direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or of exercising any trust or power conferred on the Trustee. However, the Trustee may refuse to follow any direction that conflicts with law or this Indenture or that the Trustee determines in good faith is unduly prejudicial to the rights of other Securityholders or would involve the Trustee in personal liability unless the Trustee is offered indemnity satisfactory to it. This Section 6.05 shall be in lieu of Section 316(a)(1)(A) of the TIA and such Section 316(a)(1)(A) is hereby expressly excluded from this Indenture, as permitted by the TIA. SECTION 6.06. Limitation on Suits. A Securityholder may not pursue any remedy with respect to this Indenture or the Securities unless: (a) the Holder gives to the Trustee written notice stating that an Event of Default is continuing; (b) the Holders of at least 25% in aggregate Principal Amount at Maturity of the Securities at the time outstanding make a written request to the Trustee to pursue the remedy; (c) such Holder or Holders offer to the Trustee security or indemnity satisfactory to the Trustee against any loss, liability or expense; and (d) the Trustee does not comply with the request within 60 days after receipt of such notice, request and offer of security or indemnity and the Holders of a majority in aggregate 38

Principal Amount at Maturity of the Securities at the time outstanding do not give the Trustee a direction inconsistent with the request during such 60-day period. A Securityholder may not use this Indenture to prejudice the rights of any other Securityholder or to obtain a preference or priority over any other Securityholder. SECTION 6.07. Rights of Holders to Receive Payment. Notwithstanding any other provision of this Indenture, the right of any Holder to receive payment of the Principal Amount at Maturity (or if the Securities have been converted to semiannual coupon notes following a Tax Event pursuant to Article 10, the Restated Principal Amount), Issue Price plus accrued Original Issue Discount, Redemption Price, Purchase Price, Change in Control Purchase Price (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount, plus accrued interest) in respect of the Securities held by such Holder, on or after the respective due dates expressed in the Securities or any Redemption Date, and to convert the Securities in accordance with Article 11, or to bring suit for the enforcement of any such payment on or after such respective dates or the right to convert, shall not be impaired or affected adversely without the consent of such Holder. SECTION 6.08. Collection Suit by Trustee. If an Event of Default described in Section 6.01(1) or (2) occurs and is continuing, the Trustee may recover judgment in its own name and as trustee of an express trust against the Company for the whole amount owing with respect to the Securities and the amounts provided for in Section 7.07. SECTION 6.09. Trustee May File Proofs of Claim. In case of the pendency of any receivership, insolvency, liquidation, bankruptcy, reorganization, arrangement, adjustment, composition or other judicial proceeding relative to the Company or any other obligor upon the Securities or the property of the Company or of such other obligor or their creditors, the Trustee (irrespective of whether the Principal Amount at Maturity, Restated Principal Amount, Issue Price plus accrued Original Issue Discount, Redemption Price, Purchase Price, Change in Control Purchase Price (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount, plus accrued interest) in respect of the Securities shall then be due and payable as therein expressed or by declaration or otherwise and irrespective of whether the Trustee shall have made any demand on the Company for the payment of any such amount) shall be entitled and empowered, by intervention in such proceeding or otherwise, (a) to file and prove a claim for the whole amount of the Principal Amount at Maturity, Restated Principal Amount, Issue Price plus accrued Original Issue Discount, Redemption Price, Purchase Price, Change in Control Purchase Price (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount, plus accrued interest) and to file such other papers or documents as may be necessary or advisable in order to have the claims of the Trustee (including any claim for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel or any other amounts due the Trustee under Section 7.07) and of the Holders allowed in such judicial proceeding, and (b) to collect and receive any moneys or other property payable or deliverable on any such claims and to distribute the same; 39

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or similar official in any such judicial proceeding is hereby authorized by each Holder to make such payments to the Trustee and, in the event that the Trustee shall consent to the making of such payments directly to the Holders, to pay the Trustee any amount due it for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 7.07. Nothing herein contained shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Holder any plan of reorganization, arrangement, adjustment or composition affecting the Securities or the rights of any Holder thereof, or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding. SECTION 6.10. Priorities. If the Trustee collects any money pursuant to this Article 6, it shall pay out the money in the following order: FIRST: to the Trustee for amounts due under Section 7.07; SECOND: to Securityholders for amounts due and unpaid on the Securities for the Principal Amount at Maturity, Restated Principal Amount, Issue Price plus accrued Original Issue Discount, Redemption Price, Purchase Price, Change in Control Purchase Price (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount, plus accrued interest), as the case may be, ratably, without preference or priority of any kind, according to such amounts due and payable on the Securities; and THIRD: the balance, if any, to the Company. The Trustee may fix a record date and payment date for any payment to Securityholders pursuant to this Section 6.10. At least 15 days before such record date, the Trustee shall mail to each Securityholder and the Company a notice that states the record date, the payment date and the amount to be paid. SECTION 6.11. Undertaking for Costs. In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for any action taken or omitted by it as Trustee, a court in its discretion may require the filing by any party litigant (other than the Trustee) in the suit of an undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable costs, including reasonable attorneys' fees and expenses, against any party litigant in the suit, having due regard to the merits and good faith of the claims or defenses made by the party litigant. This Section 6.11 does not apply to a suit by the Trustee, a suit by a Holder pursuant to Section 6.07 or a suit by Holders of more than 10% in aggregate Principal Amount at Maturity of the Securities at the time outstanding. This Section 6.11 shall be in lieu of Section 315(e) of the TIA and such Section 315(e) is hereby expressly excluded from this Indenture, as permitted by the TIA. SECTION 6.12. Waiver of Stay, Extension or Usury Laws. The Company covenants (to the extent that it may lawfully do so) that it will not at any time insist upon, or plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay or extension law or any usury or other law wherever enacted, now or at any time hereafter in force, which would 40

prohibit or forgive the Company from paying all or any portion of the Principal Amount at Maturity, Restated Principal Amount, Issue Price plus accrued Original Issue Discount, Redemption Price, Purchase Price or Change in Control Purchase Price in respect of Securities (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount, plus accrued interest), as contemplated herein, or which may affect the covenants or the performance of this Indenture; and the Company (to the extent that it may lawfully do so) hereby expressly waives all benefit or advantage of any such law, and covenants that it will not hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer and permit the execution of every such power as though no such law had been enacted. ARTICLE VII. TRUSTEE SECTION 7.01. Duties of Trustee. (a) If an Event of Default has occurred and is continuing, the Trustee shall exercise the rights and powers vested in it by this Indenture and use the same degree of care and skill in its exercise as a prudent person would exercise or use under the circumstances in the conduct of such person's own affairs. (b) Except during the continuance of an Event of Default: (1) the Trustee need perform only those duties that are specifically set forth in this Indenture and no others; and (2) in the absence of bad faith on its part, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture. However, in case of any such certificates or opinions which by provision hereof are specifically required to be furnished to the Trustee, the Trustee shall examine the certificates and opinions to determine whether or not they conform to the requirements of this Indenture (but need not confirm or investigate the accuracy of mathematical calculations or other facts stated therein). This Section 7.01(b) shall be in lieu of Section 3.15(a) of the TIA and such Section 315(a) is hereby expressly excluded from this Indenture, as permitted by the TIA. (c) The Trustee may not be relieved from liability for its own negligent action, its own negligent failure to act or its own willful misconduct, except that: (1) this paragraph (c) does not limit the effect of paragraph (b) of this Section 7.01; (2) the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer unless it is proved that the Trustee was negligent in ascertaining the pertinent facts; and 41

(3) the Trustee shall not be liable with respect to any action it takes or omits to take in good faith in accordance with a direction received by it pursuant to Section 6.05. Subparagraphs (c)(1), (2) and (3) shall be in lieu of Sections 315(d)(1), 315(d)(2) and 315(d)(3) of the TIA and such Sections 315(d)(1), 315(d)(2) and 315(d)(3) are hereby expressly excluded from this Indenture, as permitted by the TIA. (d) Every provision of this Indenture that in any way relates to the Trustee is subject to paragraphs (a), (b), (c) and (e) of this Section 7.01. (e) The Trustee may refuse to perform any duty or exercise any right or power or extend or risk its own funds or otherwise incur any financial liability unless it receives indemnity satisfactory to it against any loss, liability or expense. (f) Money held by the Trustee in trust hereunder need not be segregated from other funds except to the extent required by law. The Trustee (acting in any capacity hereunder) shall be under no liability for interest on any money received by it hereunder unless otherwise agreed in writing with the Company. SECTION 7.02. Rights of Trustee. Subject to its duties and responsibilities under the TIA, (a) The Trustee may conclusively rely on any document believed by it to be genuine and to have been signed or presented by the proper person. The Trustee need not investigate any fact or matter stated in the document. (b) Before the Trustee acts or refrains from acting, it may require an Officers' Certificate or an Opinion of Counsel. The Trustee shall not be liable for any action it takes or omits to take in good faith in reliance on such Officers' Certificate or Opinion of Counsel. (c) The Trustee may act through agents and attorneys and shall not be responsible for the misconduct or negligence of any agent or attorney appointed with due care. (d) Subject to the provisions of Section 7.01(c), the Trustee shall not be liable for any action it takes or omits to take in good faith which it believes to be authorized or within its rights or powers. (e) The Trustee may consult with counsel selected by it and any advice or Opinion of Counsel shall be full and complete authorization and protection in respect of any action taken or suffered or omitted by it hereunder in good faith and in accordance with such advice or Opinion of Counsel. (f) The Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request, order or direction of any of the Holders, pursuant to the provisions of this Indenture, unless such Holders shall have offered to the Trustee security or indemnity satisfactory to it against the costs, expenses and liabilities which may be incurred therein or thereby. 42

(g) The Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit, and, if the Trustee shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises of the Company, personally or by agent or attorney at the sole cost of the Company and shall incur no liability or additional liability of any kind by reason of such inquiry or investigation. (h) The Trustee shall not be liable for any action taken, suffered, or omitted to be taken by it in good faith and reasonably believed by it to be authorized or within the discretion or rights or powers conferred upon it by this Indenture. (i) The Trustee shall not be deemed to have notice of any Default or Event of Default unless a Responsible Officer of the Trustee has actual knowledge thereof or unless written notice of any event which is in fact such a default is received by the Trustee at the Corporate Trust Office of the Trustee, and such notice references the Securities and this Indenture. (j) The rights, privileges, protections, immunities and benefits given to the Trustee, including, without limitation, its right to be indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, and to each agent, custodian and other Person employed to act hereunder. (k) The Trustee may request that the Company deliver an Officers' Certificate setting forth the names of individuals and/or titles of officers authorized at such time to take specified actions pursuant to this Indenture, which Officers' Certificate may be signed by any person authorized to sign an Officers' Certificate, including any person specified as so authorized in any such certificate previously delivered and not superseded. SECTION 7.03. Individual Rights of Trustee. The Trustee in its individual or any other capacity may become the owner or pledgee of Securities and may otherwise deal with the Company or its Affiliates with the same rights it would have if it were not Trustee. Any Paying Agent, Registrar, Conversion Agent or co-registrar may do the same with like rights. However, the Trustee must comply with Sections 7.10 and 7.11. SECTION 7.04. Trustee's Disclaimer. The Trustee makes no representation as to the validity or adequacy of this Indenture or the Securities, it shall not be accountable for the Company's use or application of the proceeds from the Securities, it shall not be responsible for any statement in the registration statement for the Securities under the Securities Act or in the Indenture or the Securities (other than its certificate of authentication), or the determination as to which beneficial owners are entitled to receive any notices hereunder. SECTION 7.05. Notice of Defaults. If a Default occurs and if it is known to the Trustee, the Trustee shall give to each Securityholder notice of the Default within 90 days after it occurs unless such Default shall have been cured or waived before the giving of such notice. Except in the case of a Default described in Section 6.01(a) or (b), the Trustee may withhold the notice if and so long as a committee of its Responsible Officers in good faith determines that 43

withholding the notice is in the interests of Securityholders. The second sentence of this Section 7.05 shall be in lieu of the proviso to Section 315(b) of the TIA and such proviso is hereby expressly excluded from this Indenture, as permitted by the TIA. SECTION 7.06. Reports by Trustee to Holders. Within 60 days after each May 15 beginning with May 15, 2002, the Trustee shall mail to each Securityholder a brief report dated as of such May 15 that complies with TIA Section 313(a), if required by such Section 313(a). The Trustee also shall comply with TIA Section 313(b). A copy of each report at the time of its mailing to Securityholders shall be filed with the SEC and each securities exchange, if any, on which the Securities are listed. The Company agrees to promptly notify the Trustee whenever the Securities become listed on any securities exchange and of any delisting thereof. SECTION 7.07. Compensation and Indemnity. The Company agrees: (a) to pay to the Trustee from time to time such compensation as the Company and the Trustee shall from time to time agree in writing for all services rendered by it hereunder (which compensation shall not be limited (to the extent permitted by law) by any provision of law in regard to the compensation of a trustee of an express trust); (b) to reimburse the Trustee upon its request for all reasonable expenses, disbursements and advances incurred or made by the Trustee in accordance with any provision of this Indenture (including the reasonable compensation and the expenses, advances and disbursements of its agents and counsel), except any such expense, disbursement or advance as may be attributable to its negligence or bad faith; and (c) to indemnify the Trustee or any predecessor trustee and their agents for, and to hold them harmless against, any loss, damage, claim, liability, cost or expense (including reasonable attorney's fees and expenses and taxes (other than taxes based upon, measured by or determined by the income of the Trustee)) incurred without negligence or bad faith on its part, arising out of or in connection with the acceptance or administration of this trust, including the costs and expenses of defending itself against any claim (whether asserted by the Company, any Holder or any other Person) or liability in connection with the exercise or performance of any of its powers or duties hereunder. To secure the Company's payment obligations in this Section 7.07, the Trustee shall have a lien prior to the Securities on all money or property held or collected by the Trustee, except that held in trust to pay the Principal Amount at Maturity, Restated Principal Amount, Issue Price plus accrued Original Issue Discount, Redemption Price, Purchase Price, Change in Control Purchase Price or interest, if any, as the case may be, on particular Securities. The Company's payment obligations pursuant to this Section 7.07 shall survive the discharge of this Indenture and resignation or removal of the Trustee. When the Trustee incurs expenses after the occurrence of a Default specified in Section 6.01(f) or (g), the expenses, including the reasonable fees and expenses of its counsel, are intended to constitute expenses of administration under any Bankruptcy Law. 44

SECTION 7.08. Replacement of Trustee. The Trustee may resign by so notifying the Company; provided, however, no such resignation shall be effective until a successor Trustee has accepted its appointment pursuant to this Section 7.08. The Holders of a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding may remove the Trustee by so notifying the Trustee and the Company. The Company shall remove the Trustee if: (a) the Trustee fails to comply with Section 7.10; (b) the Trustee is adjudged bankrupt or insolvent; (c) a receiver or public officer takes charge of the Trustee or its property; or (d) the Trustee otherwise becomes incapable of acting. If the Trustee resigns or is removed or if a vacancy exists in the office of Trustee for any reason, the Company shall promptly appoint, by resolution of its Board of Directors, a successor Trustee. A successor Trustee shall deliver a written acceptance of its appointment to the retiring Trustee and to the Company satisfactory in form and substance to the retiring Trustee and the Company. Thereupon the resignation or removal of the retiring Trustee shall become effective, and the successor Trustee shall have all the rights, powers and duties of the Trustee under this Indenture. The successor Trustee shall mail a notice of its succession to Securityholders. The retiring Trustee shall promptly transfer all property held by it as Trustee to the successor Trustee, subject to the lien provided for in Section 7.07. If a successor Trustee does not take office within 30 days after the retiring Trustee resigns or is removed, the retiring Trustee (at the expense of the Company), the Company or the Holders of a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding may petition any court of competent jurisdiction for the appointment of a successor Trustee. If the Trustee fails to comply with Section 7.10, any Securityholder may petition any court of competent jurisdiction for the removal of the Trustee and the appointment of a successor Trustee. SECTION 7.09. Successor Trustee by Merger. If the Trustee consolidates with, merges or converts into, or transfers all or substantially all its corporate trust business or assets to, another corporation, the resulting, surviving or transferee corporation without any further act shall be the successor Trustee. SECTION 7.10. Eligibility; Disqualification. The Trustee shall at all times satisfy the requirements of TIA Sections 310(a)(1) and 310(b). The Trustee shall have a combined capital and surplus of at least $50,000,000 as set forth in its most recent published annual report of condition. Nothing herein contained shall prevent the Trustee from filing with the Commission the application referred to in the penultimate paragraph of TIA Section 310(b). 45

SECTION 7.11. Preferential Collection of Claims Against Company. The Trustee shall comply with TIA Section 311(a), excluding any creditor relationship listed in TIA Section 311(b). A Trustee who has resigned or been removed shall be subject to TIA Section 311(a) to the extent indicated therein. ARTICLE VIII. DISCHARGE OF INDENTURE SECTION 8.01. Discharge of Liability on Securities. When (i) the Company delivers to the Trustee all outstanding Securities (other than Securities replaced pursuant to Section 2.07) for cancellation or (ii) all outstanding Securities have become due and payable and the Company deposits with the Trustee cash or, if expressly permitted by the terms of the Securities or the Indenture, Common Stock sufficient to pay all amounts due and owing on all outstanding Securities (other than Securities replaced pursuant to Section 2.07), and if in either case the Company pays all other sums payable hereunder by the Company, then this Indenture shall, subject to Section 7.07, cease to be of further effect. The Trustee shall join in the execution of a document prepared by the Company acknowledging satisfaction and discharge of this Indenture on demand of the Company accompanied by an Officers' Certificate and Opinion of Counsel and at the cost and expense of the Company. SECTION 8.02. Repayment to the Company. The Trustee and the Paying Agent shall return to the Company upon written request any money or securities held by them for the payment of any amount with respect to the Securities that remains unclaimed for two years, subject to applicable unclaimed property law. After return to the Company, Holders entitled to the money or securities must look to the Company for payment as general creditors unless an applicable abandoned property law designates another person and the Trustee and the Paying Agent shall have no further liability to the Securityholders with respect to such money or securities for that period commencing after the return thereof. ARTICLE IX. AMENDMENTS SECTION 9.01. Without Consent of Holders. The Company and the Trustee may amend this Indenture or the Securities without the consent of any Securityholder: (a) to cure any ambiguity, omission, defect or inconsistency; provided, however that such amendment does not materially adversely affects the rights of any Securityholder; (b) to comply with Article 5 or Section 11.14; (c) to provide for uncertificated Securities in addition to certificated Securities so long as such uncertificated Securities are in registered form for purposes of the Internal Revenue Code of 1986, as amended; 46

(d) to make any change that does not adversely affect the rights of any Securityholder; or (e) to make any change to comply with the TIA, or any amendment thereto, or to comply with any requirement of the SEC in connection with the qualification of the Indenture under the TIA. SECTION 9.02. With Consent of Holders. With the written consent of the Holders of at least a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding, the Company and the Trustee may amend this Indenture or the Securities. However, without the consent of each Securityholder affected, an amendment to this Indenture or the Securities may not: (a) make any change to the Principal Amount at Maturity of Securities whose Holders must consent to an amendment; (b) make any change in the manner or rate of accrual in connection with Original Issue Discount, reduce the rate of interest referred to in paragraph 1 of the Securities, reduce the rate of interest referred to in Section 10.01 upon the occurrence of a Tax Event, or extend the time for payment of Original Issue Discount or interest, if any, on any Security; (c) reduce the Principal Amount at Maturity, Restated Principal Amount or the Issue Price of or extend the Stated Maturity of any Security; (d) reduce the Redemption Price, Purchase Price or Change in Control Purchase Price of any Security; (e) make any Security payable in currency other than that stated in the Security; (f) make any change in Section 6.04, Section 6.07 or this Section 9.02, except to increase any percentage set forth therein; (g) make any change that adversely affects the right to convert any Security; or (h) make any change that adversely affects the right to require the Company to purchase the Securities in accordance with the terms thereof and this Indenture. It shall not be necessary for the consent of the Holders under this Section 9.02 to approve the particular form of any proposed amendment, but it shall be sufficient if such consent approves the substance thereof. After an amendment under this Section 9.02 becomes effective, the Company shall mail to each Holder a notice briefly describing the amendment. SECTION 9.03. Compliance with Trust Indenture Act. Every supplemental indenture executed pursuant to this Article shall comply with the TIA. SECTION 9.04. Revocation and Effect of Consents, Waivers and Actions. Until an amendment, waiver or other action by Holders becomes effective, a consent thereto by a Holder 47

of a Security hereunder is a continuing consent by the Holder and every subsequent Holder of that Security or portion of the Security that evidences the same obligation as the consenting Holder's Security, even if notation of the consent, waiver or action is not made on the Security. However, any such Holder or subsequent Holder may revoke the consent, waiver or action as to such Holder's Security or portion of the Security if the Trustee receives the notice of revocation before the date the amendment, waiver or action becomes effective. After an amendment, waiver or action becomes effective, it shall bind every Securityholder. SECTION 9.05. Notation on or Exchange of Securities. Securities authenticated and delivered after the execution of any supplemental indenture pursuant to this Article may, and shall if required by the Trustee, bear a notation in form approved by the Trustee as to any matter provided for in such supplemental indenture. If the Company shall so determine, new Securities so modified as to conform, in the opinion of the Trustee and the Board of Directors, to any such supplemental indenture may be prepared and executed by the Company and authenticated and delivered by the Trustee in exchange for outstanding Securities. SECTION 9.06. Trustee to Sign Supplemental Indentures. The Trustee shall sign any supplemental indenture authorized pursuant to this Article 9 if the amendment contained therein does not adversely affect the rights, duties, liabilities or immunities of the Trustee. If it does, the Trustee may, but need not, sign such supplemental indenture. In signing such supplemental indenture the Trustee shall be entitled to receive, and (subject to the provisions of Section 7.01) shall be fully protected in relying upon, an Officers' Certificate and an Opinion of Counsel stating that such amendment is authorized or permitted by this Indenture. SECTION 9.07. Effect of Supplemental Indentures. Upon the execution of any supplemental indenture under this Article, this Indenture shall be modified in accordance therewith, and such supplemental indenture shall form a part of this Indenture for all purposes; and every Holder of Securities theretofore or thereafter authenticated and delivered hereunder shall be bound thereby. ARTICLE X. SPECIAL TAX EVENT CONVERSION SECTION 10.01. Optional Conversion to Semiannual Coupon Note Upon Tax Event. From and after (i) the date (the "Tax Event Date") of the occurrence of a Tax Event and (ii) the date the Company exercises such option, whichever is later (the "Option Exercise Date"), at the option of the Company, interest in lieu of future Original Issue Discount shall accrue at the rate of 0.5% per annum on a Restated Principal Amount per $1,000 original Principal Amount at Maturity (the "Restated Principal Amount") equal to the Issue Price plus Original Issue Discount accrued through the Option Exercise Date and shall be payable semiannually on May 7 and November 7 of each year (each an "Interest Payment Date") to Holders of record at the close of business on April 21 or October 22 (each a "Regular Record Date") immediately preceding such Interest Payment Date. Interest will be computed on the basis of a 360-day year comprised of twelve 30- day months and will accrue from the most recent date on which interest has been paid or, if no interest has been paid, from the Option Exercise Date. Within 15 days of the occurrence 48

of a Tax Event, the Company shall mail a written notice of such Tax Event by first-class mail to the Trustee and within 15 days of its exercise of such option the Company shall mail a written notice of the Option Exercise Date by first-class mail to the Trustee and Holders of the Securities. From and after the Option Exercise Date, (i) the Company shall be obligated to pay at Stated Maturity, in lieu of the Principal Amount at Maturity of a Security, the Restated Principal Amount thereof and (ii) "Issue Price and accrued Original Issue Discount," "Issue Price plus Original Issue Discount" or similar words, as used herein, shall mean Restated Principal Amount plus accrued and unpaid interest with respect to any Security. Securities authenticated and delivered after the Option Exercise Date may, and shall if required by the Trustee, bear a notation in a form approved by the Trustee as to the conversion of the Securities to semiannual coupon notes. SECTION 10.02. Payment of Interest; Interest Rights Preserved. (a) Interest on any Security that is payable, and is punctually paid or duly provided for, on any Interest Payment Date shall be paid to the person in whose name that Security is registered at the close of business on the Regular Record Date for such interest at the office or agency of the Company maintained for such purpose. Each installment of interest on any Security shall be paid by check; provided that payment by wire transfer of immediately available funds will be required with respect to principal on and interest, if any, on all Global Securities and all other Securities the holders of which shall have provided wire transfer instructions to the Company or the Paying Agent for an account maintained by the payee located inside the United States. In the case of a permanent Global Security, interest payable on any Interest Payment Date will be paid to the Depositary, with respect to that portion of such permanent Global Security held for its account by Cede & Co. for the purpose of permitting such party to credit the interest received by it in respect of such permanent Global Security to the accounts of the beneficial owners thereof. (b) Except as otherwise specified with respect to the Securities, any interest on any Security that is payable on any Interest Payment Date, but is not punctually paid or duly provided for, within 30 days following on any Interest Payment Date (herein called "Defaulted Interest", which term shall include any accrued and unpaid interest that has accrued on such defaulted amount in accordance with paragraph 1 of the Securities), shall forthwith cease to be payable to the registered Holder thereof on the relevant Regular Record Date by virtue of having been such Holder, and such Defaulted Interest may be paid by the Company, as its election in each case, as provided in clause (1) or (2) below: (1) The Company may elect to make payment of any Defaulted Interest to the persons in whose names the Securities are registered at the close of business on a Special Record Date for the payment of such Defaulted Interest, which shall be fixed in the following manner. The Company shall notify the Trustee in writing of the amount of Defaulted Interest proposed to be paid on each Security and the date of the proposed payment (which shall not be less than 20 days after such notice is received by the Trustee), and at the same time the Company shall deposit with the Trustee an amount of money equal to the aggregate amount proposed to be paid in respect of such Defaulted Interest or shall make arrangements satisfactory to the Trustee for such deposit on or prior to the date of the proposed payment, such money when deposited to be held in trust for the benefit of the persons entitled to such Defaulted Interest as in this clause provided. Thereupon the Trustee shall fix a Special Record Date for the payment of such Defaulted 49

Interest which shall be not more than 15 days and not less than 10 days prior to the date of the proposed payment and not less than 10 days after the receipt by the Trustee of the notice of the proposed payment. The Trustee shall promptly notify the Company of such Special Record Date and, in the name and at the expense of the Company, shall cause notice of the proposed payment of such Defaulted Interest and the Special Record Date therefor to be mailed, first-class postage prepaid, to each Holder of Securities at his address as it appears on the list of Securityholders maintained pursuant to Section 2.05 not less than 10 days prior to such Special Record Date. Notice of the proposed payment of such Defaulted Interest and the Special Record Date therefor having been mailed as aforesaid, such Defaulted Interest shall be paid to the persons in whose names the Securities are registered at the close of business on such Special Record Date and shall no longer be payable pursuant to the following clause (2). (2) The Company may make payment of any Defaulted Interest on the Securities in any other lawful manner not inconsistent with the requirements of any securities exchange on which such Securities may be listed, and upon such notice as may be required by such exchange, if, after notice given by the Company to the Trustee of the proposed payment pursuant to this clause, such manner of payment shall be deemed practicable by the Trustee. Subject to the foregoing provisions of this Section and Section 2.06, each Security delivered under this Indenture upon registration of transfer of or in exchange for or in lieu of any other Security shall carry the rights to interest accrued and unpaid, and to accrue, which were carried by such other Security. ARTICLE XI. CONVERSION SECTION 11.01. Conversion Privilege. A Holder of a Security may convert such Security into Common Stock at any time during the period stated in paragraph 8 of the Securities. The number of shares of Common Stock issuable upon conversion of a Security per $1,000 of Principal Amount at Maturity thereof (the "Conversion Rate") shall be that set forth in paragraph 8 of the Securities, subject to adjustment as herein set forth. A Holder may convert a portion of the Principal Amount at Maturity of a Security if the portion is $1,000 or an integral multiple of $1,000. Provisions of this Indenture that apply to conversion of all of a Security also apply to conversion of a portion of a Security. "Average Sale Price" means the average of the Sale Prices of the Common Stock for the shorter of (1) 30 consecutive trading days ending on the last full trading day prior to the Time of Determination with respect to the rights, warrants or options or distribution in respect of which the Average Sale Price is being calculated, or 50

(2) the period (x) commencing on the date next succeeding the first public announcement of (a) the issuance of rights, warrants or options or (b) the distribution, in each case, in respect of which the Average Sale Price is being calculated and (y) proceeding through the last full trading day prior to the Time of Determination with respect to the rights, warrants or options or distribution in respect of which the Average Sale Price is being calculated (excluding days within such period, if any, which are not trading days), or (3) the period, if any, (x) commencing on the date next succeeding the Ex-Dividend Time with respect to the next preceding (a) issuance of rights, warrants or options or (b) distribution, in each case, for which an adjustment is required by the provisions of Section 11.06(d), 11.07 or 11.08 and (y) proceeding through the last full trading day prior to the Time of Determination with respect to the rights, warrants or options or distribution in respect of which the Average Sale Price is being calculated (excluding days within such period, if any, which are not trading days). In the event that the Ex-Dividend Time (or in the case of a subdivision, combination or reclassification, the effective date with respect thereto) with respect to a dividend, subdivision, combination or reclassification to which Section 11.06(1), (2), (3) or (5) applies occurs during the period applicable for calculating "Average Sale Price" pursuant to the definition in the preceding sentence, "Average Sale Price" shall be calculated for such period in a manner determined by the Board of Directors to reflect the impact of such dividend, subdivision, combination or reclassification on the Sale Price of the Common Stock during such period. "Time of Determination" means the time and date of the earlier of (i) the determination of stockholders entitled to receive rights, warrants or options or a distribution, in each case, to which Section 11.07 or 11.08 applies and (ii) the time ("Ex-Dividend Time") immediately prior to the commencement of "ex-dividend" trading for such rights, warrants or options or distribution on the New York Stock Exchange or such other principal national or regional exchange or market on which the Common Stock is then listed or quoted. SECTION 11.02. Conversion Procedure. To convert a Security a Holder must satisfy the requirements in paragraph 8 of the Securities. The date on which the Holder satisfies all those requirements is the conversion date (the "Conversion Date"). As soon as practicable after the Conversion Date, the Company shall deliver to the Holder, through the Conversion Agent, a certificate for the number of full shares of Common Stock issuable upon the conversion and cash in lieu of any fractional share determined pursuant to Section 11.03. The person in whose name the certificate is registered shall be treated as a stockholder of record on and after the Conversion Date; provided, however, that no surrender of a Security on any date when the stock transfer books of the Company shall be closed shall be effective to constitute the person or persons entitled to receive the shares of Common Stock upon such conversion as the record holder or holders of such shares of Common Stock on such date, but such surrender shall be effective to constitute the person or persons entitled to receive such shares of Common Stock as the record holder or holders thereof for all purposes at the close of business on the next succeeding day on which such stock transfer books are open; such conversion shall be at the Conversion Rate in effect on the date that such Security shall have been surrendered for conversion, as if the stock 51

transfer books of the Company had not been closed. Upon conversion of a Security, such person shall no longer be a Holder of such Security. No payment or adjustment will be made for dividends on, or other distributions with respect to, any Common Stock except as provided in this Article 11. On conversion of a Security, that portion of accrued Original Issue Discount (or interest, if the Company has exercised its option provided for in Section 10.01) attributable to the period from the Issue Date (or, if the Company has exercised the option provided for in Section 10.01, the later of (x) the date of such exercise and (y) the date on which interest was last paid) of the Security through the Conversion Date with respect to the converted Security shall not be canceled, extinguished or forfeited, but rather shall be deemed to be paid in full to the Holder thereof through delivery of the Common Stock (together with the cash payment, if any, in lieu of fractional shares) in exchange for the Security being converted pursuant to the provisions hereof; and the fair market value of such shares of Common Stock (together with any such cash payment in lieu of fractional shares) shall be treated as issued, to the extent thereof, first in exchange for Original Issue Discount (or interest, if the Company has exercised its option provided for in Section 10.01) accrued through the Conversion Date, and the balance, if any, of such fair market value of such Common Stock (and any such cash payment) shall be treated as issued in exchange for the Issue Price of the Security being converted pursuant to the provisions hereof. If the Holder converts more than one Security at the same time, the number of shares of Common Stock issuable upon the conversion shall be based on the total Principal Amount at Maturity of the Securities converted. If the last day on which a Security may be converted is a Legal Holiday, the Security may be surrendered on the next succeeding day that is not a Legal Holiday. Upon surrender of a Security that is converted in part, the Company shall execute, and the Trustee shall authenticate and deliver to the Holder, a new Security in an authorized denomination equal in Principal Amount at Maturity to the unconverted portion of the Security surrendered. SECTION 11.03. Fractional Shares. The Company will not issue a fractional share of Common Stock upon conversion of a Security. Instead, the Company will deliver cash for the current market value of the fractional share. The current market value of a fractional share shall be determined, to the nearest 1/1,000th of a share, by multiplying the Sale Price, on the last trading day prior to the Conversion Date, of a full share by the fractional amount and rounding the product to the nearest whole cent. SECTION 11.04. Taxes on Conversion. If a Holder converts a Security, the Company shall pay any documentary, stamp or similar issue or transfer tax due on the issue of shares of Common Stock upon the conversion. However, the Holder shall pay any such tax which is due because the Holder requests the shares to be issued in a name other than the Holder's name. The Conversion Agent may refuse to deliver the certificates representing the Common Stock being issued in a name other than the Holder's name until the Conversion Agent receives a sum sufficient to pay any tax which will be due because the shares are to be issued in a name other 52

than the Holder's name. Nothing herein shall preclude any tax withholding required by law or regulations. SECTION 11.05. Company to Provide Stock. The Company shall, prior to issuance of any Securities under this Article 11, and from time to time as may be necessary, reserve out of its authorized but unissued Common Stock a sufficient number of shares of Common Stock to permit the conversion of the Securities. All shares of Common Stock delivered upon conversion of the Securities shall be newly issued shares or treasury shares, shall be duly and validly issued and fully paid and nonassessable and shall be free from preemptive rights and free of any lien or adverse claim. The Company will endeavor promptly to comply with all Federal and state securities laws regulating the offer and delivery of shares of Common Stock upon conversion of Securities, if any, and will list or cause to have quoted such shares of Common Stock on each national securities exchange or in the over-the-counter market or such other market on which the Common Stock is then listed or quoted. SECTION 11.06. Adjustment for Change in Capital Stock. If, after the Issue Date of the Securities, the Company: (a) pays a dividend or makes a distribution on its Common Stock in shares of its Common Stock or other Capital Stock; (b) subdivides its outstanding shares of Common Stock into a greater number of shares; (c) combines its outstanding shares of Common Stock into a smaller number of shares; (d) pays a dividend or makes a distribution on its Common Stock in shares of its Capital Stock (other than Common Stock or rights, warrants or options for its Capital Stock); or (e) issues by reclassification of its Common Stock any shares of its Capital Stock (other than rights, warrants or options for its Capital Stock), then the conversion privilege and the Conversion Rate in effect immediately prior to such action shall be adjusted so that the Holder of a Security thereafter converted may receive the number of shares of Capital Stock of the Company which such Holder would have owned immediately following such action if such Holder had converted the Security immediately prior to such action. The adjustment shall become effective immediately after the record date in the case of a dividend or distribution and immediately after the effective date in the case of a subdivision, combination or reclassification. If after an adjustment a Holder of a Security upon conversion of such Security may receive shares of two or more classes of Capital Stock of the Company, the Conversion Rate shall thereafter be subject to adjustment upon the occurrence of an action taken with respect to 53

any such class of Capital Stock as is contemplated by this Article 11 with respect to the Common Stock, on terms comparable to those applicable to Common Stock in this Article 11. SECTION 11.07. Adjustment for Rights Issue. If after the Issue Date of the Securities, the Company distributes any rights, warrants or options to all holders of its Common Stock entitling them, for a period expiring within 60 days after the record date for such distribution, to purchase shares of Common Stock at a price per share less than the Sale Price as of the Time of Determination, the Conversion Rate shall be adjusted in accordance with the formula: (O + N) R' = R x ------------------ (O + (N x P)/M) where: R'= the adjusted Conversion Rate. R = the current Conversion Rate. O = the number of shares of Common Stock outstanding on the record date for the distribution to which this Section 11.07 is being applied. N = the number of additional shares of Common Stock offered pursuant to the distribution. P = the offering price per share of the additional shares. M = the Average Sale Price, minus, in the case of (i) a distribution to which Section 11.06(d) applies or (ii) a distribution to which Section 11.08 applies, for which, in each case, (x) the record date shall occur on or before the record date for the distribution to which this Section 11.07 applies and (y) the Ex-Dividend Time shall occur on or after the date of the Time of Determination for the distribution to which this Section 11.07 applies, the fair market value (on the record date for the distribution to which this Section 11.07 applies) of the (1) Capital Stock of the Company distributed in respect of each share of Common Stock in such Section 11.06(d) distribution and (2) assets of the Company or debt securities or any rights, warrants or options to purchase securities of the Company distributed in respect of each share of Common Stock in such Section 11.08 distribution. The Board of Directors shall determine fair market values for the purposes of this Section 11.07. The adjustment shall become effective immediately after the record date for the determination of shareholders entitled to receive the rights, warrants or options to which this Section 11.07 applies. If all of the shares of Common Stock subject to such rights, warrants or options have not been issued when such rights, warrants or options expire, then the Conversion 54

Rate shall promptly be readjusted to the Conversion Rate which would then be in effect had the adjustment upon the issuance of such rights, warrants or options been made on the basis of the actual number of shares of Common Stock issued upon the exercise of such rights, warrants or options. No adjustment shall be made under this Section 11.07 if the application of the formula stated above in this Section 11.07 would result in a value of R' that is equal to or less than the value of R. SECTION 11.08. Adjustment for Other Distributions. If, after the Issue Date of the Securities, the Company distributes to all holders of its Common Stock any of its assets, or debt securities or any rights, warrants or options to purchase securities of the Company (including securities or cash, but excluding (x) distributions of Capital Stock referred to in Section 11.06 and distributions of rights, warrants or options referred to in Section 11.07 and (y) cash dividends or other cash distributions that are paid out of consolidated current net earnings or earnings retained in the business as shown on the books of the Company unless such cash dividends or other cash distributions are Extraordinary Cash Dividends) the Conversion Rate shall be adjusted, subject to the provisions of the last paragraph of this Section 11.08, in accordance with the formula: M R' = R x ---------- M-F where: R'= the adjusted Conversion Rate. R = the current Conversion Rate. M = the Average Sale Price, minus, in the case of a distribution to which Section 11.06(d) applies, for which (i) the record date shall occur on or before the record date for the distribution to which this Section 11.08 applies and (ii) the Ex-Dividend Time shall occur on or after the date of the Time of Determination for the distribution to which this Section 11.08 applies, the fair market value (on the record date for the distribution to which this Section 11.08 applies) of any Capital Stock of the Company distributed in respect of each share of Common Stock in such Section 11.06(d) distribution. F = the fair market value (on the record date for the distribution to which this Section 11.08 applies) of the assets, securities, rights, warrants or options to be distributed in respect of each share of Common Stock in the distribution to which this Section 11.08 is being applied (including, in the case of cash dividends or other cash distributions giving rise to an adjustment, all such cash distributed concurrently). The Board of Directors shall determine fair market values for the purposes of this Section 11.08. 55

The adjustment shall become effective immediately after the record date for the determination of shareholders entitled to receive the distribution to which this Section 11.08 applies. For purposes of this Section 11.08, the term "Extraordinary Cash Dividend" shall mean any cash dividend with respect to the Common Stock the amount of which, together with the aggregate amount of cash dividends on the Common Stock to be aggregated with such cash dividend in accordance with the provisions of this paragraph, equals or exceeds the threshold percentages set forth in item (i) below. For purposes of item (i) below, the "Measurement Period" with respect to a cash dividend on the Common Stock shall mean the 365 consecutive day period ending on the date prior to the Ex-Dividend Time with respect to such cash dividend, and the "Relevant Cash Dividends" with respect to a cash dividend on the Common Stock shall mean the cash dividends on the Common Stock with Ex-Dividend Times occurring in the Measurement Period. (i) If, upon the date prior to the Ex-Dividend Time with respect to a cash dividend on the Common Stock, the aggregate amount of such cash dividend together with the amounts of all Relevant Cash Dividends equals or exceeds on a per share basis 5% of the Sale Price of the Common Stock on the last trading day preceding the date of declaration by the Board of Directors of the cash dividend with respect to which this provision is being applied, then such cash dividend together with all Relevant Cash Dividends, shall be deemed to be an Extraordinary Cash Dividend and for purposes of applying the formula set forth above in this Section 11.08, the value of "F" shall be equal to (y) the aggregate amount of such cash dividend together with the amount of all Relevant Cash Dividends, minus (z) the aggregate amount of all Relevant Cash Dividends for which a prior adjustment in the Conversion Rate was previously made under this Section 11.08. In making the determinations required by item (i) above, the amount of cash dividends paid on a per share basis and the amount of any Relevant Cash Dividends specified in item (i) above shall be appropriately adjusted to reflect the occurrence during such period of any event described in Section 11.06. SECTION 11.09. When Adjustment May Be Deferred. No adjustment in the Conversion Rate need be made unless the adjustment would require an increase or decrease of at least 1% in the Conversion Rate. Any adjustments that are not made shall be carried forward and taken into account in any subsequent adjustment. All calculations under this Article 11 shall be made to the nearest cent or to the nearest 1/1,000th of a share, as the case may be. SECTION 11.10. When No Adjustment Required. No adjustment need be made for a transaction referred to in Section 11.06, 11.07, 11.08 or 11.14 if Securityholders are to participate in the transaction on a basis and with notice that the Board of Directors determines to be fair and appropriate in light of the basis and notice on which holders of Common Stock participate in the transaction. Such participation by Securityholders may include participation 56

upon conversion provided that an adjustment shall be made at such time as the Securityholders are no longer entitled to participate. No adjustment need be made for rights to purchase Common Stock pursuant to a Company plan for reinvestment of dividends or interest. No adjustment need be made for a change in the par value or no par value of the Common Stock. To the extent the Securities become convertible pursuant to this Article 11 into cash, no adjustment need be made thereafter as to the cash. Interest will not accrue on the cash. SECTION 11.11. Notice of Adjustment. Whenever the Conversion Rate is adjusted, the Company shall promptly mail to Securityholders a notice of the adjustment. The Company shall file with the Trustee and the Conversion Agent such notice and a certificate from the Company's independent public accountants briefly stating the facts requiring the adjustment and the manner of computing it. The certificate shall be conclusive evidence that the adjustment is correct. Neither the Trustee nor any Conversion Agent shall be under any duty or responsibility with respect to any such certificate except to exhibit the same to any Holder desiring inspection thereof. SECTION 11.12. Voluntary Increase. The Company from time to time may increase the Conversion Rate by any amount for any period of time. Whenever the Conversion Rate is increased, the Company shall mail to Securityholders and file with the Trustee and the Conversion Agent a notice of the increase. The Company shall mail the notice at least 15 days before the date the increased Conversion Rate takes effect. The notice shall state the increased Conversion Rate and the period it will be in effect. A voluntary increase of the Conversion Rate does not change or adjust the Conversion Rate otherwise in effect for purposes of Section 11.06, 11.07 or 11.08. SECTION 11.13. Notice of Certain Transactions. If: (a) the Company takes any action that would require an adjustment in the Conversion Rate pursuant to Section 11.06, 11.07 or 11.08 (unless no adjustment is to occur pursuant to Section 11.10); or (b) the Company takes any action that would require a supplemental indenture pursuant to Section 11.14; or (c) there is a liquidation or dissolution of the Company; then the Company shall mail to Securityholders and file with the Trustee and the Conversion Agent a notice stating the proposed record date for a dividend or distribution or the proposed effective date of a subdivision, combination, reclassification, consolidation, merger, binding share exchange, transfer, liquidation or dissolution. The Company shall file and mail the notice at least 15 days before such date. Failure to file or mail the notice or any defect in it shall not affect the validity of the transaction. 57

SECTION 11.14. Reorganization of Company; Special Distributions. If the Company is a party to a transaction subject to Section 5.01 (other than a sale of all or substantially all of the assets of the Company in a transaction in which the holders of Common Stock immediately prior to such transaction do not receive securities, cash or other assets of the Company or any other person) or a merger or binding share exchange which reclassifies or changes its outstanding Common Stock, the person obligated to deliver securities, cash or other assets upon conversion of Securities shall enter into a supplemental indenture. If the issuer of securities deliverable upon conversion of Securities is an Affiliate of the successor Company, that issuer shall join in the supplemental indenture. The supplemental indenture shall provide that the Holder of a Security may convert it into the kind and amount of securities, cash or other assets which such Holder would have received immediately after the consolidation, merger, binding share exchange or transfer if such Holder had converted the Security immediately before the effective date of the transaction, assuming (to the extent applicable) that such Holder (i) was not a constituent person or an Affiliate of a constituent person to such transaction; (ii) made no election with respect thereto; and (iii) was treated alike with the plurality of non-electing Holders. The supplemental indenture shall provide for adjustments which shall be as nearly equivalent as may be practical to the adjustments provided for in this Article 11. The successor Company shall mail to Securityholders a notice briefly describing the supplemental indenture. If this Section applies, neither Section 11.06 nor 11.07 applies. If the Company makes a distribution to all holders of its Common Stock of any of its assets, or debt securities or any rights, warrants or options to purchase securities of the Company that, but for the provisions of Section 11.08 (c), would otherwise result in an adjustment in the Conversion Rate pursuant to the provisions of Section 11.08, then, from and after the record date for determining the holders of Common Stock entitled to receive the distribution, a Holder of a Security that converts such Security in accordance with the provisions of this Indenture shall upon such conversion be entitled to receive, in addition to the shares of Common Stock into which the Security is convertible, the kind and amount of securities, cash or other assets comprising the distribution that such Holder would have received if such Holder had converted the Security immediately prior to the record date for determining the holders of Common Stock entitled to receive the distribution. SECTION 11.15. Company Determination Final. Any determination that the Company or the Board of Directors must make pursuant to Section 11.03, 11.06, 11.07, 11.08, 11.09, 11.10, 11.14 or 11.17 is conclusive. SECTION 11.16. Trustee's Adjustment Disclaimer. The Trustee has no duty to determine when an adjustment under this Article 11 should be made, how it should be made or what it should be. The Trustee has no duty to determine whether a supplemental indenture under Section 11.14 need be entered into or whether any provisions of any supplemental indenture are correct. The Trustee shall not be accountable for and makes no representation as to the validity or value of any securities or assets issued upon conversion of Securities. The Trustee shall not be responsible for the Company's failure to comply with this Article 11. Each Conversion Agent shall have the same protection under this Section 11.16 as the Trustee. 58

SECTION 11.17. Simultaneous Adjustments. In the event that this Article 11 requires adjustments to the Conversion Rate under more than one of Sections 11.06(d), 11.07 or 11.08, and the record dates for the distributions giving rise to such adjustments shall occur on the same date, then such adjustments shall be made by applying, first, the provisions of Section 11.06, second, the provisions of Section 11.08 and, third, the provisions of Section 11.07. SECTION 11.18. Successive Adjustments. After an adjustment to the Conversion Rate under this Article 11, any subsequent event requiring an adjustment under this Article 11 shall cause an adjustment to the Conversion Rate as so adjusted. SECTION 11.19. Rights Issued in Respect of Common Stock Issued Upon Conversion. Each share of Common Stock issued upon conversion of Securities pursuant to this Article 11 shall be entitled to receive the appropriate number of common stock or preferred stock purchase rights, as the case may be (the "Rights"), if any, that shares of Common Stock are entitled to receive and the certificates representing the Common Stock issued upon such conversion shall bear such legends, if any, in each case as may be provided by the terms of any shareholder rights agreement adopted by the Company, as the same may be amended from time to time (in each case, a "Rights Agreement"). Provided that such Rights Agreement requires that each share of Common Stock issued upon conversion of Securities at any time prior to the distribution of separate certificates representing the Rights be entitled to receive such Rights, then, notwithstanding anything else to the contrary in this Article 11, there shall not be any adjustment to the conversion privilege or Conversion Rate as a result of the issuance of Rights, the distribution of separate certificates representing the Rights, the exercise or redemption of such Rights in accordance with any such Rights Agreement, or the termination or invalidation of such Rights. ARTICLE XII. MISCELLANEOUS SECTION 12.01. Trust Indenture Act Controls. If any provision of this Indenture limits, qualifies, or conflicts with another provision which is required to be included in this Indenture by the TIA, the required provision shall control. SECTION 12.02. Notices. Any request, demand, authorization, notice, waiver, consent or communication shall be in writing and delivered in person or mailed by first-class mail, postage prepaid, addressed as follows or transmitted by facsimile transmission (confirmed by guaranteed overnight courier) to the following facsimile numbers: if to the Company: Affiliated Managers Group, Inc. Two International Place Boston, MA 02100 Telephone No. (617) 747-3300 Facsimile No. (617)747-3380 Attention: Treasurer 59

If to the Trustee: First Union National Bank One World Trade Center Suite 4711 New York, NY 10048 Telephone No. (212) 938-0779 Facsimile No. (212) 938-0821 Attention: Corporate Trust - Bond Administration The Company or the Trustee by notice given to the other in the manner provided above may designate additional or different addresses for subsequent notices or communications. Any notice or communication given to a Securityholder shall be mailed to the Securityholder, by first-class mail, postage prepaid, at the Securityholder's address as it appears on the registration books of the Registrar and shall be sufficiently given if so mailed within the time prescribed. Failure to mail a notice or communication to a Securityholder or any defect in it shall not affect its sufficiency with respect to other Securityholders. If a notice or communication is mailed in the manner provided above, it is duly given, whether or not received by the addressee. If the Company mails a notice or communication to the Securityholders, it shall mail a copy to the Trustee and each Registrar, Paying Agent, Conversion Agent or co-registrar. SECTION 12.03. Communication by Holders with Other Holders. Securityholders may communicate pursuant to TIA Section 312(b) with other Securityholders with respect to their rights under this Indenture or the Securities. The Company, the Trustee, the Registrar, the Paying Agent, the Conversion Agent and anyone else shall have the protection of TIA Section 312(c). SECTION 12.04. Certificate and Opinion as to Conditions Precedent. Upon any request or application by the Company to the Trustee to take any action under this Indenture, the Company shall furnish to the Trustee: (a) an Officers' Certificate stating that, in the opinion of the signers, all conditions precedent, if any, provided for in this Indenture relating to the proposed action have been complied with; and (b) an Opinion of Counsel stating that, in the opinion of such counsel, all such conditions precedent, if any, have been complied with; provided, however, that an Opinion of Counsel shall not be required upon the initial issuance of Securities and upon the issuance of Securities pursuant to the Over-Allotment Option. SECTION 12.05. Statements Required in Certificate or Opinion. Each Officers' Certificate or Opinion of Counsel with respect to compliance with a covenant or condition provided for in this Indenture shall include: 60

(a) a statement that each person making such Officers' Certificate or Opinion of Counsel has read such covenant or condition; (b) a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such Officers' Certificate or Opinion of Counsel are based; (c) a statement that, in the opinion of each such person, he has made such examination or investigation as is necessary to enable such person to express an informed opinion as to whether or not such covenant or condition has been complied with; and (d) a statement that, in the opinion of such person, such covenant or condition has been complied with. SECTION 12.06. Separability Clause. In case any provision in this Indenture or in the Securities shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. SECTION 12.07. Rules by Trustee, Paying Agent, Conversion Agent and Registrar. The Trustee may make reasonable rules for action by or a meeting of Securityholders. The Registrar, Conversion Agent and the Paying Agent may make reasonable rules for their functions. SECTION 12.08. Legal Holidays. A "Legal Holiday" is any day other than a Business Day. If any specified date (including a date for giving notice) is a Legal Holiday, the action shall be taken on the next succeeding day that is not a Legal Holiday, and, if the action to be taken on such date is a payment in respect of the Securities, no Original Issue Discount or interest, if any, shall accrue for the intervening period. SECTION 12.09. GOVERNING LAW. THE LAWS OF THE STATE OF NEW YORK SHALL GOVERN THIS INDENTURE AND THE SECURITIES, WITHOUT REGARD TO PRINCIPLES OF CONFLICT OF LAWS. SECTION 12.10. No Recourse Against Others. A director, officer, employee or stockholder, as such, of the Company shall not have any liability for any obligations of the Company under the Securities or this Indenture or for any claim based on, in respect of or by reason of such obligations or their creation. By accepting a Security, each Securityholder shall waive and release all such liability. The waiver and release shall be part of the consideration for the issue of the Securities. SECTION 12.11. Successors. All agreements of the Company in this Indenture and the Securities shall bind its successor. All agreements of the Trustee in this Indenture shall bind its successor. SECTION 12.12. Multiple Originals. The parties may sign any number of copies of this Indenture. Each signed copy shall be an original, but all of them together represent the same agreement. One signed copy is enough to prove this Indenture. 61

IN WITNESS WHEREOF, the undersigned, being duly authorized, have executed this Indenture on behalf of the respective parties hereto as of the date first above written. AFFILIATED MANAGERS GROUP, INC. By /s/ Darrell W. Crate ---------------------------------- Name: Darrell W. Crate Title: Sr. Vice President and Chief Financial Officer FIRST UNION NATIONAL BANK, as Trustee By /s/ David Massa ---------------------------------- Name: David Massa Title: Vice President 62

EXHIBIT A-1 [FORM OF FACE OF GLOBAL SECURITY] FOR PURPOSES OF SECTIONS 1273 AND 1275 OF THE INTERNAL REVENUE CODE, THE AMOUNT OF ORIGINAL ISSUE DISCOUNT WITH RESPECT TO EACH $1,000 OF PRINCIPAL AMOUNT AT MATURITY OF THIS SECURITY IS $95.05, THE ISSUE DATE IS MAY 7, 2001, THE YIELD TO MATURITY IS 0.50%. UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY), ANY TRANSFER PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. TRANSFERS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF THE DEPOSITORY TRUST COMPANY, OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR'S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN ARTICLE TWO OF THE INDENTURE REFERRED TO ON THE REVERSE HEREOF. THIS SECURITY AND THE SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS. NEITHER THIS SECURITY, THE SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN OR THEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, REGISTRATION. THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF, AGREES TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE (THE "RESALE RESTRICTION TERMINATION DATE") WHICH IS TWO YEARS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH AFFILIATED MANAGERS GROUP, INC. (THE "COMPANY" OR THE "ISSUER") OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS SECURITY (OR ANY PREDECESSOR OF SUCH SECURITY) ONLY (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) FOR SO LONG AS THIS SECURITY AND THE SHARES OF A-1-1

COMMON STOCK ISSUABLE UPON CONVERSION OF THIS SECURITY ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A, TO A PERSON IT REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL BUYER" AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHICH NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (C) TO AN INSTITUTIONAL "ACCREDITED INVESTOR" WITHIN THE MEANING OF SUBPARAGRAPH (A)(1), (2),(3) OR (7) OF RULE 501 UNDER THE SECURITIES ACT THAT IS ACQUIRING THE SECURITY FOR ITS OWN ACCOUNT, OR FOR THE ACCOUNT OF SUCH AN INSTITUTIONAL "ACCREDITED INVESTOR," FOR INVESTMENT PURPOSES AND NOT WITH A VIEW TO, OR FOR OFFER OR SALE IN CONNECTION WITH, ANY DISTRIBUTION IN VIOLATION OF THE SECURITIES ACT, (D) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT, (E) IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH RULE 904 OF REGULATION S UNDER THE SECURITIES ACT OR (F) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY'S AND THE TRUSTEE'S RIGHTS PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSE (C), (E) OR (F) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND IN EACH OF THE FOREGOING CASES, A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THE OTHER SIDE OF THIS SECURITY IS COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF THE HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE. [THE FOREGOING LEGEND MAY BE REMOVED FROM THIS SECURITY ON SATISFACTION OF THE CONDITIONS SPECIFIED IN THE INDENTURE.] A-1-2

AFFILIATED MANAGERS GROUP, INC. Liquid Yield Option(TM) Note due May 7, 2021 (Zero Coupon-Senior) No. R-1 CUSIP: 008252AA6 Issue Date: May 7, 2001 Original Issue Discount: $95.05 Issue Price: $904.95 (for each $1,000 (for each $1,000 Principal Amount at Principal Amount at Maturity) Maturity) AFFILIATED MANAGERS GROUP, INC., a Delaware corporation, promises to pay to CEDE & Co., or registered assigns, the Principal Amount at Maturity of ONE HUNDRED NINETY FIVE MILLION DOLLARS ($195,000,000) on May 7, 2021. This Security shall not bear interest except as specified on the other side of this Security. Original Issue Discount will accrue as specified on the other side of this Security. This Security is convertible as specified on the other side of this Security. Additional provisions of this Security are set forth on the other side of this Security. Dated: May 7, 2001 AFFILIATED MANAGERS GROUP, INC. By ______________________________________ Name: Title: Attest: ________________________ Name: Title: TRUSTEE'S CERTIFICATE OF AUTHENTICATION FIRST UNION NATIONAL BANK, as Trustee, certifies that this is one of the Securities referred to in the within- mentioned Indenture. By ______________________ Authorized Signatory Dated: May 7, 2001 A-1-3

[FORM OF REVERSE SIDE OF LYON] Liquid Yield Option(TM) Note Due 2021 (Zero Coupon-Senior) 1. Interest. This Security shall not bear interest, except as specified in this paragraph or in paragraph 10 hereof. If the Principal Amount at Maturity hereof or any portion of such Principal Amount at Maturity is not paid when due (whether upon acceleration pursuant to Section 6.02 of the Indenture, upon the date set for payment of the Redemption Price pursuant to paragraph 5 hereof, upon the date set for payment of the Purchase Price or Change in Control Purchase Price pursuant to paragraph 6 hereof or upon the Stated Maturity of this Security) (or if interest due hereon or any portion of such interest is not paid when due in accordance with paragraph 10 hereof), then in each such case the overdue amount shall, to the extent permitted by law, bear interest at the rate of 0.50% per annum, compounded semi-annually, which interest shall accrue from the date such overdue amount was originally due to the date payment of such amount, including interest thereon, has been made or duly provided for. All such interest shall be payable on demand. The accrual of such interest on overdue amounts shall be in lieu of, and not in addition to, the continued accrual of Original Issue Discount. Original Issue Discount (the difference between the Issue Price and the Principal Amount at Maturity of the Security), in the period during which a Security remains outstanding, shall accrue at 0.50% per annum, on a semiannual bond equivalent basis using a 360-day year comprised of twelve 30-day months, from the Issue Date of this Security. 2. Method of Payment. Subject to the terms and conditions of the Indenture, the Company will make payments in respect of Redemption Price, Purchase Price, Change in Control Purchase Price, Restated Principal Amount and at Stated Maturity to Holders who surrender Securities to a Paying Agent to collect such payments in respect of the Securities. The Company will pay cash amounts in money of the United States that at the time of payment is legal tender for payment of public and private debts. However, the Company may make such cash payments by check payable in such money; provided that payment by wire transfer of immediately available funds will be required with respect to principal of and interest, if any, on all Global Securities and all other Securities the Holders of which shall have provided wire transfer instructions to the Company or the Paying Agent. Any payment required to be made on any day that is not a Business Day will be made on the next succeeding Business Day. 3. Paying Agent, Conversion Agent and Registrar. Initially, First Union National Bank, a national banking association (the "Trustee"), will act as Paying Agent, Conversion Agent and Registrar. The Company may appoint and change - ---------- (TM) Trademark of Merrill Lynch & Co., Inc. A-1-4

any Paying Agent, Conversion Agent, Registrar or co-registrar without notice, other than notice to the Trustee except that the Company will maintain at least one Paying Agent in the State of New York, City of New York, Borough of Manhattan, which shall initially be an office or agency of the Trustee. The Company or any of its Subsidiaries or any of their Affiliates may act as Paying Agent, Conversion Agent, Registrar or co-registrar. 4. Indenture. The Company issued the Securities under an Indenture dated as of May 7, 2001 (the "Indenture"), between the Company and the Trustee. The terms of the Securities include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as in effect from time to time (the "TIA"). Capitalized terms used herein and not defined herein have the meanings ascribed thereto in the Indenture. The Securities are subject to all such terms, and Securityholders are referred to the Indenture and the TIA for a statement of those terms. The Securities are general unsecured obligations of the Company limited to $195,000,000 aggregate Principal Amount at Maturity (subject to Sections 2.02 and 2.07 of the Indenture). The Indenture does not limit other indebtedness of the Company, secured or unsecured. 5. Redemption at the Option of the Company. No sinking fund is provided for the Securities. The Securities are redeemable as a whole, or from time to time in part, at any time at the option of the Company at the Redemption Prices set forth below, provided that the Securities are not redeemable prior to May 7, 2006. The table below shows Redemption Prices of a Security per $1,000 Principal Amount at Maturity on the dates shown below and at Stated Maturity, which prices reflect accrued Original Issue Discount calculated to each such date. The Redemption Price of a Security redeemed between such dates shall include an additional amount reflecting the additional Original Issue Discount accrued since the preceding date in the table through the date of redemption. (2) (1) ORIGINAL (3) LYON ISSUE REDEMPTION ISSUE DISCOUNT AT PRICE REDEMPTION DATE PRICE 0.5% (1) + (2) - --------------------------------- ------- ----------- ---------- May 7, 2006...................... $904.95 $22.88 $927.83 May 7, 2007...................... $904.95 $27.52 $932.47 May 7, 2008...................... $904.95 $32.19 $937.14 May 7, 2009...................... $904.95 $36.88 $941.83 May 7, 2010...................... $904.95 $41.60 $946.55 May 7, 2011...................... $904.95 $46.34 $951.29 May 7, 2012...................... $904.95 $51.10 $956.05 May 7, 2013...................... $904.95 $55.89 $960.84 May 7, 2014...................... $904.95 $60.70 $965.65 A-1-5

(2) (1) ORIGINAL (3) LYON ISSUE REDEMPTION ISSUE DISCOUNT AT PRICE REDEMPTION DATE PRICE 0.5% (1) + (2) - --------------------------------- ------- ----------- ---------- May 7, 2015...................... $904.95 $65.53 $970.48 May 7, 2016...................... $904.95 $70.39 $975.34 May 7, 2017...................... $904.95 $75.27 $980.22 May 7, 2018...................... $904.95 $80.18 $985.13 May 7, 2019...................... $904.95 $85.11 $990.06 May 7, 2020...................... $904.95 $90.07 $995.02 At stated maturity............... $904.95 $95.05 $1,000.00 If converted to a semiannual coupon note following the occurrence of a Tax Event, this Security will be redeemable at a Redemption Price equal to the Restated Principal Amount plus accrued and unpaid interest from the date of such conversion through the Redemption Date; but in no event will this Security be redeemable before May 7, 2006. 6. Purchase By the Company at the Option of the Holder. Subject to the terms and conditions of the Indenture, the Company shall become obligated to purchase, at the option of the Holder, the Securities held by such Holder on the following Purchase Dates and at the following Purchase Prices per $1,000 Principal Amount at Maturity, upon delivery of a Purchase Notice containing the information set forth in the Indenture, at any time from the opening of business on the date that is 30 Business Days prior to such Purchase Date until the close of business on such Purchase Date and upon delivery of the Securities to the Paying Agent by the Holder as set forth in the Indenture. Purchase Date Purchase Price ------------- -------------- May 7, 2002 $909.48 May 7, 2004 $918.61 May 7, 2006 $927.83 May 7, 2011 $951.29 May 7, 2016 $975.34 The Purchase Price (equal to the Issue Price plus accrued Original Issue Discount to the Purchase Date) may be paid, at the option of the Company, in cash or by the issuance and delivery of shares of Common Stock of the Company, or in any combination thereof. If prior to a Purchase Date this Security has been converted to a semiannual coupon note following the occurrence of a Tax Event, the Purchase Price will be equal to the Restated Principal Amount plus accrued and unpaid interest from the date of conversion to the Purchase Date. At the option of the Holder and subject to the terms and conditions of the Indenture, the Company shall become obligated to purchase all or a portion of the Securities held by such A-1-6

Holder as of the date that is 35 Business Days after the occurrence of a Change in Control of the Company occurring on or prior to May 7, 2006 for a Change in Control Purchase Price equal to the Issue Price plus accrued Original Issue Discount to the Change in Control Purchase Date, which Change in Control Purchase Price shall be paid in cash. If prior to a Change in Control Purchase Date this Security has been converted to a semiannual coupon note following the occurrence of a Tax Event, the Change in Control Purchase Price shall be equal to the Restated Principal Amount plus accrued and unpaid interest from the date of conversion to the Change in Control Purchase Date. Holders have the right to withdraw any Purchase Notice or Change in Control Purchase Notice, as the case may be, by delivering to the Paying Agent a written notice of withdrawal in accordance with the provisions of the Indenture. If cash (and/or securities if permitted under the Indenture) sufficient to pay the Purchase Price or Change in Control Purchase Price, as the case may be, of all Securities or portions thereof to be purchased as of the Purchase Date or the Change in Control Purchase Date, as the case may be, is deposited with the Paying Agent on the Business Day following the Purchase Date or the Change in Control Purchase Date, as the case may be, Original Issue Discount ceases to accrue on such Securities (or portions thereof) immediately after such Purchase Date or Change in Control Purchase Date, as the case may be, and the Holder thereof shall have no other rights as such (other than the right to receive the Purchase Price or Change in Control Purchase Price, as the case may be, upon surrender of such Security). 7. Notice of Redemption. Notice of redemption will be mailed at least 15 days but not more than 60 days before the Redemption Date to each Holder of Securities to be redeemed at the Holder's registered address. If money sufficient to pay the Redemption Price of all Securities (or portions thereof) to be redeemed on the Redemption Date is deposited with the Paying Agent prior to or on the Redemption Date, immediately after such Redemption Date Original Issue Discount ceases to accrue on such Securities or portions thereof. Securities in denominations larger than $1,000 of Principal Amount at Maturity may be redeemed in part but only in integral multiples of $1,000 of Principal Amount at Maturity. 8. Conversion. (a) Conversion Based on Common Stock Price. Subject to the provisions of this paragraph 8 and notwithstanding the fact that any other condition to conversion has not been satisfied, Holders may convert the Securities into Common Stock on a Conversion Date in any fiscal quarter commencing after June 30, 2001, if, as of the last day of the preceding fiscal quarter, the Sale Price of the Common Stock for at least 20 trading days in a period of 30 consecutive trading days ending on the last trading day of such preceding fiscal quarter is greater than the conversion trigger price. The "conversion trigger price" for any fiscal quarter shall be a reference percentage, beginning at 120%, and declining 0.12658% per quarter thereafter until it reaches 110.00018% for the quarter beginning April 1, 2021, of the accreted conversion price per share of Common Stock on the last trading day of such preceding calendar quarter. A-1-7

The "accreted conversion price" per share of Common Stock as of any day equals the quotient of: o the Issue Price and accrued Original Issue Discount to that day, divided by o the number of shares of Common Stock issuable upon conversion of $1,000 Principal Amount at Maturity of Securities on that day. For illustrative purposes only, the table below shows the conversion trigger price per share of Common Stock in respect of each of the first 20 fiscal quarters following issuance of the Securities. The conversion trigger price for any fiscal quarter starting on or after June 30, 2001 shall be the conversion trigger price as of the last day of the immediately preceding fiscal quarter as set forth in the table below. These conversion trigger prices reflect the accreted conversion price per share of Common Stock (assuming that no events occurred requiring an adjustment to the initial Conversion Rate of 11.6195 shares of Common Stock per $1,000 Principal Amount of Maturity) multiplied by the applicable percentage for the respective fiscal quarter. Thereafter, the accreted conversion price per share of Common Stock increases each fiscal quarter by the accrued Original Issue Discount for the quarter and the applicable percentage declines by 0.12658% per quarter. The conversion trigger price for the calendar quarter beginning April 1, 2021 is $94.62. (1) (2) (3) Accreted Conversion Conversion Applicable Trigger Price Calendar Quarter Price Percentage (1) X (2) - ---------------- ----- ---------- --------- 2001 Quarter ended September 30, 2001 77.94 120.00000% $93.53 Quarter ended December 31, 2001 78.04 119.87342% $93.55 2002 Quarter ended March 31, 2002 78.14 119.74684% $93.56 Quarter ended June 30, 2002 78.23 119.62026% $93.58 Quarter ended September 30, 2002 78.33 119.49368% $93.60 Quarter ended December 31, 2002 78.43 119.36710% $93.62 2003 Quarter ended March 31, 2003 78.53 119.24052% $93.64 Quarter ended June 30, 2003 78.62 119.11394% $93.65 Quarter ended September 30, 2003 78.72 118.98736% $93.67 Quarter ended December 31, 2003 78.82 118.86078% $93.69 2004 Quarter ended March 31, 2004 78.92 118.73420% $93.70 Quarter ended June 30, 2004 79.02 118.60762% $93.72 Quarter ended September 30, 2004 79.12 118.48104% $93.74 Quarter ended December 31, 2004 79.22 118.35446% $93.76 2005 Quarter ended March 31, 2005 79.31 118.22788% $93.77 Quarter ended June 30, 2005 79.41 118.10130% $93.79 Quarter ended September 30, 2005 79.51 117.97472% $93.81 Quarter ended December 31, 2005 79.61 117.84814% $93.82 2006 Quarter ended March 31, 2006 79.71 117.72156% $93.84 Quarter ended June 30, 2006 79.81 117.59498% $93.85 - -------------------- * This table assumes no events occurred that would require an adjustment to the conversion rate. A-1-8

(b) Conversion Based on Credit Rating. Subject to the provisions of this paragraph 8 and notwithstanding the fact any other condition to conversion has not been satisfied, Holders may convert the Securities into Common Stock on a Conversion Date during any period in which the credit rating assigned to the Securities by Standard & Poor's Ratings Services, a division of The McGraw-Hill Companies Inc., and its successors ("Standard & Poor's") or if Standard & Poor's is not making ratings of the Securities publicly available, a nationally recognized U.S. rating agency or agencies, as the case may be, selected by the Company, which will be substituted for Standard & Poor's, is below the Applicable Rating. "Applicable Rating" means, (1) BB-, in the case of Standard & Poor's (or its equivalent, under any successor ratings categories of Standard & Poor's) or (2) the equivalent in respect of ratings categories of any rating agencies substituted for Standard & Poor's. (c) Conversion Based on Redemption. Subject to the provisions of this paragraph 8 and notwithstanding the fact that any other condition to conversion has not been satisfied, a Holder may convert into Common Stock a Security or portion of a Security which has been called for redemption pursuant to paragraph 6 hereof, even if the foregoing provisions have not been satisfied, but such Securities may be surrendered for conversion until the close of business on the second Business Day immediately preceding the Redemption Date. (d) Conversion Upon Occurrence of Certain Corporate Transactions. Subject to the provisions of this paragraph 8 and notwithstanding the fact that any other condition to conversion has not been satisfied, in the event that the Company declares a dividend or distribution described in Section 11.07 of the Indenture, or a dividend or a distribution described in Section 11.08 of the Indenture where the fair market value of such dividend or distribution per share of Common Stock, as determined in the Indenture, exceeds 15% of the Sale Price of the Common Stock on the Business Day immediately preceding the date of declaration for such dividend or distribution, the Securities may be surrendered for conversion beginning on the date the Company gives notice to the Holders of such right, which shall not be less than 20 days prior to the Ex-Dividend Time for such dividend or distribution, and Securities may be surrendered for conversion at any time thereafter until the close of business on the Business Day prior to the Ex-Dividend Time or until the Company announces that such dividend or distribution will not take place. Subject to the provisions of this paragraph 8 and notwithstanding the fact that any other condition to conversion has not been satisfied, in the event the Company is a party to a consolidation, merger or binding share exchange or a transfer of all or substantially all assets of the Company pursuant to which the Common Stock would be converted into cash, securities or other property as set forth in Section 11.14 of the Indenture, the Securities may be surrendered for conversion at any time from and after the date which is 15 days prior to the date the Company announces the anticipated effective time until 15 days after the actual effective date of such transaction, and at the effective time of such transaction the right to convert a Security into Common Stock will be deemed to have changed into a right to convert it into the kind and amount of cash, securities or other property which the holder would have received if the holder had converted its Security immediately prior to the transaction. A Security in respect of which a Holder has delivered a Purchase Notice or Change in Control Purchase Notice exercising the option of such Holder to require the Company to A-1-9

purchase such Security may be converted only if such notice of exercise is withdrawn in accordance with the terms of the Indenture. The initial Conversion Rate is 11.6195 shares of Common Stock per $1,000 Principal Amount at Maturity, subject to adjustment in certain events described in the Indenture. The Company will deliver cash or a check in lieu of any fractional share of Common Stock. In the event the Company exercises its option pursuant to Section 10.01 of the Indenture to have interest in lieu of Original Issue Discount accrue on the Security following a Tax Event, the Holder will be entitled on conversion to receive the same number of shares of Common Stock such Holder would have received if the Company had not exercised such option. Accrued and unpaid interest in lieu of Original Issue Discount will not be paid on Securities that are converted; provided, however, that Securities surrendered for conversion during the period, in the case of interest in lieu of Original Issue Discount, from the close of business on any Regular Record Date next preceding any Interest Payment Date to the opening of business on such Interest Payment Date shall be entitled to receive such interest, in lieu of Original Issue Discount, payable on such Securities on the corresponding Interest Payment Date and (except Securities with respect to which the Company has mailed a notice of redemption) Securities surrendered for conversion during such periods must be accompanied by payment of an amount equal to the interest in lieu of Original Issue Discount with respect thereto that the registered Holder is to receive. To convert a Security, a Holder must (1) complete and manually sign the conversion notice below (or complete and manually sign a facsimile of such notice) and deliver such notice to the Conversion Agent, (2) surrender the Security to the Conversion Agent, (3) furnish appropriate endorsements and transfer documents if required by the Conversion Agent, the Company or the Trustee and (4) pay any transfer or similar tax, if required. A Holder may convert a portion of a Security if the Principal Amount at Maturity of such portion is $1,000 or an integral multiple of $1,000. No payment or adjustment will be made for dividends on the Common Stock except as provided in the Indenture. On conversion of a Security, that portion of accrued Original Issue Discount (or interest if the Company has exercised its option provided for in paragraph 10 hereof) attributable to the period from the Issue Date (or, if the Company has exercised the option referred to in paragraph 10 hereof, the later of (x) the date of such exercise and (y) the date on which interest was last paid) through the Conversion Date with respect to the converted Security shall not be canceled, extinguished or forfeited, but rather shall be deemed to be paid in full to the Holder thereof through the delivery of the Common Stock (together with the cash payment, if any, in lieu of fractional shares) in exchange for the Security being converted pursuant to the terms hereof; and the fair market value of such shares of Common Stock (together with any such cash payment in lieu of fractional shares) shall be treated as issued, to the extent thereof, first in exchange for Original Issue Discount (or interest, if the Company has exercised its option provided for in paragraph 10 hereof) accrued through the Conversion Date, and the balance, if any, of such fair market value of such Common Stock (and any such cash payment) shall be treated as issued in exchange for the Issue Price of the Security being converted pursuant to the provisions hereof. A-1-10

The Conversion Rate will be adjusted for dividends or distributions on Common Stock payable in Common Stock or other Capital Stock; subdivisions, combinations or certain reclassifications of Common Stock; distributions to all holders of Common Stock of certain rights to purchase Common Stock for a period expiring within 60 days at less than the Sale Price at the Time of Determination; and distributions to such holders of assets or debt securities of the Company or certain rights to purchase securities of the Company (excluding certain cash dividends or distributions). However, no adjustment need be made if Securityholders may participate in the transaction or in certain other cases. The Company from time to time may voluntarily increase the Conversion Rate. If the Company is a party to a consolidation, merger or binding share exchange or a transfer of all or substantially all of its assets, or upon certain distributions described in the Indenture, the right to convert a Security into Common Stock may be changed into a right to convert it into securities, cash or other assets of the Company or another person. 9. Conversion Arrangement on Call for Redemption. Any Securities called for redemption, unless surrendered for conversion before the close of business on the Redemption Date, may be deemed to be purchased from the Holders of such Securities at an amount not less than the Redemption Price, by one or more investment bankers or other purchasers who may agree with the Company to purchase such Securities from the Holders, to convert them into Common Stock of the Company and to make payment for such Securities to the Trustee in trust for such Holders. 10. Tax Event (a) From and after the later of (i) the date (the "Tax Event Date") of the occurrence of a Tax Event or (ii) the date the Company exercises such option (the "Option Exercise Date"), at the option of the Company, interest in lieu of future Original Issue Discount shall accrue at the rate of 0.50% per annum on a principal amount per Security (the "Restated Principal Amount") equal to the Issue Price plus Original Issue Discount accrued through the Option Exercise Date and shall be payable semiannually on May 7 and November 7 of each year (each an "Interest Payment Date") to holders of record at the close of business on April 21 or October 22 (each a "Regular Record Date") immediately preceding such Interest Payment Date. Interest will be computed on the basis of a 360-day year comprised of twelve 30-day months and will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the Option Exercise Date. (b) Interest on any Security that is payable, and is punctually paid or duly provided for, on any Interest Payment Date shall be paid to the person in whose name that Security is registered at the close of business on the Regular Record Date for such interest at the office or agency of the Company maintained for such purpose. Each installment of interest on any Security shall be paid by check; provided that payment by wire transfer of immediately available funds will be required with respect to principal on and interest, if any, on all Global Securities and all other Securities the holders of which shall have provided wire transfer instructions to the Company or the Paying Agent for an account maintained by the payee located inside the United States. A-1-11

(c) Except as otherwise specified with respect to the Securities, any Defaulted Interest on any Security shall forthwith cease to be payable to the registered Holder thereof on the relevant Regular Record Date by virtue of having been such Holder, and such Defaulted Interest may be paid by the Company as provided for in Section 10.02(b) of the Indenture. 11. Denominations; Transfer; Exchange. The Securities are in fully registered form, without coupons, in denominations of $1,000 of Principal Amount at Maturity and integral multiples of $1,000. A Holder may transfer or exchange Securities in accordance with the Indenture. The Registrar may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and to pay any taxes and fees required by law or permitted by the Indenture. The Registrar need not transfer or exchange any Securities selected for redemption (except, in the case of a Security to be redeemed in part, the portion of the Security not to be redeemed) or any Securities in respect of which a Purchase Notice or Change in Control Purchase Notice has been given and not withdrawn (except, in the case of a Security to be purchased in part, the portion of the Security not to be purchased) or any Securities for a period of 15 days before the mailing of a notice of redemption of Securities to be redeemed. 12. Persons Deemed Owners. The registered Holder of this Security may be treated as the owner of this Security for all purposes. 13. Unclaimed Money or Securities. The Trustee and the Paying Agent shall return to the Company upon written request any money or securities held by them for the payment of any amount with respect to the Securities that remains unclaimed for two years subject to applicable unclaimed property law. After return to the Company, Holders entitled to the money or securities must look to the Company for payment as general creditors unless an applicable abandoned property law designates another person. 14. Amendment; Waiver. Subject to certain exceptions set forth in the Indenture, (i) the Indenture or the Securities may be amended with the written consent of the Holders of at least a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding and (ii) certain Defaults may be waived with the written consent of the Holders of a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding. Subject to certain exceptions set forth in the Indenture, without the consent of any Securityholder, the Company and the Trustee may amend the Indenture or the Securities to cure any ambiguity, omission, defect or inconsistency, or to comply with Article 5 or Section 11.14 of the Indenture, to provide for uncertificated Securities in addition to or in place of certificated Securities or to make any change that does not adversely affect the rights of any Securityholder, or to comply with any requirement of the SEC in connection with the qualification of the Indenture under the TIA. A-1-12

15. Defaults and Remedies. Under the Indenture, Events of Default include (i) if the Securities have been converted to semiannual coupon notes following a Tax Event, default in the payment of interest which default continues for a period of 30 days; (ii) default in payment of the Principal Amount at Maturity (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount), Issue Price plus accrued Original Issue Discount, Redemption Price, Purchase Price or Change in Control Purchase Price, as the case may be, in respect of the Securities when the same becomes due and payable; (iii) failure by the Company to comply with other agreements in the Indenture or the Securities, subject to notice and lapse of time; (iv) default under any Debt, whether such Debt now exists or is created later, which default results in such Debt becoming or being declared due and payable prior to the date on which it would otherwise have become due and payable, and the principal amount of all Debt so accelerated, together with all Debt due and payable but not paid prior to the end of any grace period, is $30,000,000 or more, and such acceleration has not been rescinded or annulled within a period of 30 days after receipt by the Company of a Notice of Default, subject to notice and lapse of time; provided, however, that if any such default shall be cured, waived, rescinded or annulled, then the Event of Default by reason thereof shall be deemed not to have occurred; (v) final unsatisfied judgments not covered by insurance aggregating in excess of $30,000,000 rendered against the Company and not stayed, bonded or discharged within 60 days; and (vi) certain events of bankruptcy or insolvency. If an Event of Default occurs and is continuing, the Trustee, or the Holders of at least 25% in aggregate Principal Amount at Maturity of the Securities at the time outstanding, may declare all the Securities to be due and payable immediately. Certain events of bankruptcy or insolvency are Events of Default which will result in the Securities becoming due and payable immediately upon the occurrence of such Events of Default. Holders may not enforce the Indenture or the Securities except as provided in the Indenture. The Trustee may refuse to enforce the Indenture or the Securities unless it receives reasonable indemnity or security. Subject to certain limitations, Holders of a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from Securityholders notice of any continuing Default (except a Default in payment of amounts specified in clause (i) or (ii) above) if it determines that withholding notice is in their interests. 16. Trustee Dealings with the Company. Subject to certain limitations imposed by the TIA, the Trustee under the Indenture, in its individual or any other capacity, may become the owner or pledgee of Securities and may otherwise deal with and collect obligations owed to it by the Company or its Affiliates and may otherwise deal with the Company or its Affiliates with the same rights it would have if it were not Trustee. 17. No Recourse Against Others. A director, officer, employee or stockholder, as such, of the Company shall not have any liability for any obligations of the Company under the Securities or the Indenture or for any A-1-13

claim based on, in respect of or by reason of such obligations or their creation. By accepting a Security, each Securityholder waives and releases all such liability. The waiver and release are part of the consideration for the issue of the Securities. 18. Authentication. This Security shall not be valid until an authorized signatory of the Trustee manually signs the Trustee's Certificate of Authentication on the other side of this Security. 19. Abbreviations. Customary abbreviations may be used in the name of a Securityholder or an assignee, such as TEN COM (=tenants in common), TEN ENT (=tenants by the entireties), JT TEN (=joint tenants with right of survivorship and not as tenants in common), CUST (=custodian), and U/G/M/A (=Uniform Gift to Minors Act). 20. GOVERNING LAW. THE LAWS OF THE STATE OF NEW YORK SHALL GOVERN THE INDENTURE AND THIS SECURITY, WITHOUT REGARD TO PRINCIPLES OF CONFLICT OF LAWS. ---------- The Company will furnish to any Securityholder upon written request and without charge a copy of the Indenture. Affiliated Managers Group, Inc. Two International Place Boston, MA 02110 Telephone No. (617) 747-3300 Facsimile No. (617) 747-3380 Attention: Treasurer A-1-14

ASSIGNMENT FORM CONVERSION NOTICE To assign this Security, fill in the To convert this Security into Common form below: Stock of the Company, check the box:|_| I or we assign and transfer this To convert only part of this Security, Security to state the Principal Amount at Maturity to be converted (which must be $1,000 ___________________________________ or an integral multiple of $1,000): $___________________________ ___________________________________ If you want the stock certificate made (Insert assignee's soc. sec. or out in another person's name, fill in tax ID no.) the form below: ___________________________________ ___________________________________ ___________________________________ (Print or type assignee's name, address ___________________________________ and zip code) (Insert other person's soc. sec. or and irrevocably appoint _____________ tax ID no.) agent to transfer this Security on the ___________________________________ books of the Company. The agent may substitute another to act for him. ___________________________________ (Print or type other person's name, address and zip code) Date: ___________________________ Your Signature: ___________________________* (Sign exactly as your name appears on the other side of this Security) * Your signature must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Trustee, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Trustee in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. A-1-15

EXHIBIT A-2 [Form of Certificated Security] FOR PURPOSES OF SECTIONS 1273 AND 1275 OF THE INTERNAL REVENUE CODE, THE AMOUNT OF ORIGINAL ISSUE DISCOUNT WITH RESPECT TO EACH $1,000 OF PRINCIPAL AMOUNT AT MATURITY OF THIS SECURITY IS $95.05, THE ISSUE DATE IS MAY 7, 2001, THE YIELD TO MATURITY IS 0.50%. [INCLUDE IF SECURITY IS A CERTIFICATED SECURITY TO BE HELD BY AN INSTITUTIONAL ACCREDITED INVESTOR--IN CONNECTION WITH ANY TRANSFER, THE HOLDER WILL DELIVER TO THE REGISTRAR AND TRANSFER AGENT SUCH CERTIFICATES AND OTHER INFORMATION AS SUCH TRANSFER AGENT MAY REASONABLY REQUIRE TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE FOLLOWING RESTRICTIONS.] THIS SECURITY AND THE SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS. NEITHER THIS SECURITY, THE SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN OR THEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, REGISTRATION. THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF, AGREES TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE (THE "RESALE RESTRICTION TERMINATION DATE") WHICH IS TWO YEARS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH AFFILIATED MANAGERS GROUP, INC. (THE "COMPANY" OR THE "ISSUER") OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS SECURITY (OR ANY PREDECESSOR OF SUCH SECURITY) ONLY (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) FOR SO LONG AS THIS SECURITY AND THE SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THIS SECURITY ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A, TO A PERSON IT REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL BUYER" AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHICH NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (C) TO AN INSTITUTIONAL "ACCREDITED INVESTOR" WITHIN THE MEANING OF SUBPARAGRAPH (A)(1), (2),(3) OR (7) OF RULE 501 UNDER THE SECURITIES ACT THAT IS ACQUIRING THE SECURITY FOR ITS OWN ACCOUNT, OR FOR THE ACCOUNT OF SUCH AN INSTITUTIONAL "ACCREDITED INVESTOR," FOR INVESTMENT PURPOSES AND NOT WITH A VIEW TO, OR FOR OFFER OR SALE IN CONNECTION WITH, ANY DISTRIBUTION IN VIOLATION OF THE SECURITIES ACT, (D) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED A-2-1

EFFECTIVE UNDER THE SECURITIES ACT, (E) IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH RULE 904 OF REGULATION S UNDER THE SECURITIES ACT OR (F) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY'S AND THE TRUSTEE'S RIGHTS PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER, PURSUANT TO CLAUSE (C), (E) OR (F) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND IN EACH OF THE FOREGOING CASES, A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THE OTHER SIDE OF THIS SECURITY IS COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF THE HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE. [THE FOREGOING LEGEND MAY BE REMOVED FROM THIS SECURITY ON SATISFACTION OF THE CONDITIONS SPECIFIED IN THE INDENTURE.] A-2-2

AFFILIATED MANAGERS GROUP, INC. Liquid Yield Option(TM) Note due 2021 (Zero Coupon-Senior) No. C- CUSIP: 008252AA6 Issue Date: May 7, 2001 Original Issue Discount: $95.05 (for Issue Price: $904.95 each $1,000 Principal Amount at (for each $1,000 Principal Amount at Maturity) Maturity) AFFILIATED MANAGERS GROUP, INC., a Delaware corporation, promises to pay to CEDE & Co., or registered assigns, the Principal Amount at Maturity of ONE HUNDRED NINETY FIVE MILLION DOLLARS ($195,000,000) on May 7, 2021. This Security shall not bear interest except as specified on the other side of this Security. Original Issue Discount will accrue as specified on the other side of this Security. This Security is convertible as specified on the other side of this Security. Additional provisions of this Security are set forth on the other side of this Security. Dated: May 7, 2001 AFFILIATED MANAGERS GROUP, INC. By ________________________________ Name: Title: Attest: ___________________________________ Name: Title: TRUSTEE'S CERTIFICATE OF AUTHENTICATION FIRST UNION NATIONAL BANK, as Trustee, certifies that this is one of the Securities referred to in the within- mentioned Indenture. By _______________________________ Authorized Signatory Dated: ___________________________ A-2-3

[FORM OF REVERSE SIDE OF LYON] Liquid Yield Option(TM) Note Due 2021 (Zero Coupon-Senior) 1. Interest. This Security shall not bear interest, except as specified in this paragraph or in paragraph 10 hereof. If the Principal Amount at Maturity hereof or any portion of such Principal Amount at Maturity is not paid when due (whether upon acceleration pursuant to Section 6.02 of the Indenture, upon the date set for payment of the Redemption Price pursuant to paragraph 5 hereof, upon the date set for payment of the Purchase Price or Change in Control Purchase Price pursuant to paragraph 6 hereof or upon the Stated Maturity of this Security) (or if interest due hereon or any portion of such interest is not paid when due in accordance with paragraph 10 hereof), then in each such case the overdue amount shall, to the extent permitted by law, bear interest at the rate of 0.50% per annum, compounded semi-annually, which interest shall accrue from the date such overdue amount was originally due to the date payment of such amount, including interest thereon, has been made or duly provided for. All such interest shall be payable on demand. The accrual of such interest on overdue amounts shall be in lieu of, and not in addition to, the continued accrual of Original Issue Discount. Original Issue Discount (the difference between the Issue Price and the Principal Amount at Maturity of the Security), in the period during which a Security remains outstanding, shall accrue at 0.50% per annum, on a semiannual bond equivalent basis using a 360-day year comprised of twelve 30-day months, from the Issue Date of this Security. 2. Method of Payment. Subject to the terms and conditions of the Indenture, the Company will make payments in respect of Redemption Price, Purchase Price, Change in Control Purchase Price, Restated Principal Amount and at Stated Maturity to Holders who surrender Securities to a Paying Agent to collect such payments in respect of the Securities. The Company will pay cash amounts in money of the United States that at the time of payment is legal tender for payment of public and private debts. However, the Company may make such cash payments by check payable in such money; provided that payment by wire transfer of immediately available funds will be required with respect to principal of and interest, if any, on all Global Securities and all other Securities the Holders of which shall have provided wire transfer instructions to the Company or the Paying Agent. Any payment required to be made on any day that is not a Business Day will be made on the next succeeding Business Day. 3. Paying Agent, Conversion Agent and Registrar. Initially, First Union National Bank, a national banking association (the "Trustee"), will act as Paying Agent, Conversion Agent and Registrar. The Company may appoint and change - ---------- (TM) Trademark of Merrill Lynch & Co., Inc. A-2-4

any Paying Agent, Conversion Agent, Registrar or co-registrar without notice, other than notice to the Trustee except that the Company will maintain at least one Paying Agent in the State of New York, City of New York, Borough of Manhattan, which shall initially be an office or agency of the Trustee. The Company or any of its Subsidiaries or any of their Affiliates may act as Paying Agent, Conversion Agent, Registrar or co-registrar. 4. Indenture. The Company issued the Securities under an Indenture dated as of May 7, 2001 (the "Indenture"), between the Company and the Trustee. The terms of the Securities include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as in effect from time to time (the "TIA"). Capitalized terms used herein and not defined herein have the meanings ascribed thereto in the Indenture. The Securities are subject to all such terms, and Securityholders are referred to the Indenture and the TIA for a statement of those terms. The Securities are general unsecured obligations of the Company limited to $195,000,000 aggregate Principal Amount at Maturity (subject to Sections 2.02 and 2.07 of the Indenture). The Indenture does not limit other indebtedness of the Company, secured or unsecured. 5. Redemption at the Option of the Company. No sinking fund is provided for the Securities. The Securities are redeemable as a whole, or from time to time in part, at any time at the option of the Company at the Redemption Prices set forth below, provided that the Securities are not redeemable prior to May 7, 2006. The table below shows Redemption Prices of a Security per $1,000 Principal Amount at Maturity on the dates shown below and at Stated Maturity, which prices reflect accrued Original Issue Discount calculated to each such date. The Redemption Price of a Security redeemed between such dates shall include an additional amount reflecting the additional Original Issue Discount accrued since the preceding date in the table through the date of redemption. (2) (1) ORIGINAL (3) LYON ISSUE REDEMPTION ISSUE DISCOUNT AT PRICE REDEMPTION DATE PRICE 0.5% (1) + (2) - --------------------------------- ------- ----------- ---------- May 7, 2006...................... $904.95 $22.88 $927.83 May 7, 2007...................... $904.95 $27.52 $932.47 May 7, 2008...................... $904.95 $32.19 $937.14 May 7, 2009...................... $904.95 $36.88 $941.83 May 7, 2010...................... $904.95 $41.60 $946.55 May 7, 2011...................... $904.95 $46.34 $951.29 May 7, 2012...................... $904.95 $51.10 $956.05 May 7, 2013...................... $904.95 $55.89 $960.84 May 7, 2014...................... $904.95 $60.70 $965.65 A-2-5

(2) (1) ORIGINAL (3) LYON ISSUE REDEMPTION ISSUE DISCOUNT AT PRICE REDEMPTION DATE PRICE 0.5% (1) + (2) - --------------------------------- ------- ----------- ---------- May 7, 2015...................... $904.95 $65.53 $970.48 May 7, 2016...................... $904.95 $70.39 $975.34 May 7, 2017...................... $904.95 $75.27 $980.22 May 7, 2018...................... $904.95 $80.18 $985.13 May 7, 2019...................... $904.95 $85.11 $990.06 May 7, 2020...................... $904.95 $90.07 $995.02 At stated maturity............... $904.95 $95.05 $1,000.00 If converted to a semiannual coupon note following the occurrence of a Tax Event, this Security will be redeemable at a Redemption Price equal to the Restated Principal Amount plus accrued and unpaid interest from the date of such conversion through the Redemption Date; but in no event will this Security be redeemable before May 7, 2006. 6. Purchase By the Company at the Option of the Holder. Subject to the terms and conditions of the Indenture, the Company shall become obligated to purchase, at the option of the Holder, the Securities held by such Holder on the following Purchase Dates and at the following Purchase Prices per $1,000 Principal Amount at Maturity, upon delivery of a Purchase Notice containing the information set forth in the Indenture, at any time from the opening of business on the date that is 30 Business Days prior to such Purchase Date until the close of business on such Purchase Date and upon delivery of the Securities to the Paying Agent by the Holder as set forth in the Indenture. Purchase Date Purchase Price ------------- -------------- May 7, 2002 $909.48 May 7, 2004 $918.61 May 7, 2006 $927.83 May 7, 2011 $951.29 May 7, 2016 $975.34 The Purchase Price (equal to the Issue Price plus accrued Original Issue Discount to the Purchase Date) may be paid, at the option of the Company, in cash or by the issuance and delivery of shares of Common Stock of the Company, or in any combination thereof. If prior to a Purchase Date this Security has been converted to a semiannual coupon note following the occurrence of a Tax Event, the Purchase Price will be equal to the Restated Principal Amount plus accrued and unpaid interest from the date of conversion to the Purchase Date. At the option of the Holder and subject to the terms and conditions of the Indenture, the Company shall become obligated to purchase the Securities held by such Holder as of the date A-2-6

that is 35 Business Days after the occurrence of a Change in Control of the Company occurring on or prior to May 7, 2006 for a Change in Control Purchase Price equal to the Issue Price plus accrued Original Issue Discount to the Change in Control Purchase Date, which Change in Control Purchase Price shall be paid in cash. If prior to a Change in Control Purchase Date this Security has been converted to a semiannual coupon note following the occurrence of a Tax Event, the Change in Control Purchase Price shall be equal to the Restated Principal Amount plus accrued and unpaid interest from the date of conversion to the Change in Control Purchase Date. Holders have the right to withdraw any Purchase Notice or Change in Control Purchase Notice, as the case may be, by delivering to the Paying Agent a written notice of withdrawal in accordance with the provisions of the Indenture. If cash (and/or securities if permitted under the Indenture) sufficient to pay the Purchase Price or Change in Control Purchase Price, as the case may be, of all Securities or portions thereof to be purchased as of the Purchase Date or the Change in Control Purchase Date, as the case may be, is deposited with the Paying Agent on the Business Day following the Purchase Date or the Change in Control Purchase Date, as the case may be, Original Issue Discount ceases to accrue on such Securities (or portions thereof) immediately after such Purchase Date or Change in Control Purchase Date, as the case may be, and the Holder thereof shall have no other rights as such (other than the right to receive the Purchase Price or Change in Control Purchase Price, as the case may be, upon surrender of such Security). 7. Notice of Redemption. Notice of redemption will be mailed at least 15 days but not more than 60 days before the Redemption Date to each Holder of Securities to be redeemed at the Holder's registered address. If money sufficient to pay the Redemption Price of all Securities (or portions thereof) to be redeemed on the Redemption Date is deposited with the Paying Agent prior to or on the Redemption Date, immediately after such Redemption Date Original Issue Discount ceases to accrue on such Securities or portions thereof. Securities in denominations larger than $1,000 of Principal Amount at Maturity may be redeemed in part but only in integral multiples of $1,000 of Principal Amount at Maturity. 8. Conversion. (a) Conversion Based on Common Stock Price. Subject to the provisions of this paragraph 8 and notwithstanding the fact that any other condition to conversion has not been satisfied, Holders may convert the Securities into Common Stock on a Conversion Date in any fiscal quarter commencing after June 30, 2001, if, as of the last day of the preceding fiscal quarter, the Sale Price of the Common Stock for at least 20 trading days in a period of 30 consecutive trading days ending on the last trading day of such preceding fiscal quarter is greater than the conversion trigger price. The "conversion trigger price" for any fiscal quarter shall be a reference percentage, beginning at 120%, and declining 0.12658% per quarter thereafter until it reaches 110.00018% for the quarter beginning April 1, 2021, of the accreted conversion price per share of Common Stock on the last trading day of such preceding calendar quarter. A-2-7

The "accreted conversion price" per share of Common Stock as of any day equals the quotient of: o the Issue Price and accrued Original Issue Discount to that day, divided by o the number of shares of Common Stock issuable upon conversion of $1,000 Principal Amount at Maturity of Securities on that day. For illustrative purposes only, the table below shows the conversion trigger price per share of Common Stock in respect of each of the first 20 fiscal quarters following issuance of the Securities. The conversion trigger price for any fiscal quarter starting on or after June 30, 2001 shall be the conversion trigger price as of the last day of the immediately preceding fiscal quarter as set forth in the table below. These conversion trigger prices reflect the accreted conversion price per share of Common Stock (assuming that no events occurred requiring an adjustment to the initial Conversion Rate of 11.6195 shares of Common Stock per $1,000 Principal Amount of Maturity) multiplied by the applicable percentage for the respective fiscal quarter. Thereafter, the accreted conversion price per share of Common Stock increases each fiscal quarter by the accrued Original Issue Discount for the quarter and the applicable percentage declines by 0.12658% per quarter. The conversion trigger price for the calendar quarter beginning April 1, 2021 is $94.62. (1) (2) (3) Accreted Conversion Conversion Applicable Trigger Price Calendar Quarter Price Percentage (1) X (2) - ---------------- ----- ---------- --------- 2001 Quarter ended September 30, 2001 77.94 120.00000% $93.53 Quarter ended December 31, 2001 78.04 119.87342% $93.55 2002 Quarter ended March 31, 2002 78.14 119.74684% $93.56 Quarter ended June 30, 2002 78.23 119.62026% $93.58 Quarter ended September 30, 2002 78.33 119.49368% $93.60 Quarter ended December 31, 2002 78.43 119.36710% $93.62 2003 Quarter ended March 31, 2003 78.53 119.24052% $93.64 Quarter ended June 30, 2003 78.62 119.11394% $93.65 Quarter ended September 30, 2003 78.72 118.98736% $93.67 Quarter ended December 31, 2003 78.82 118.86078% $93.69 2004 Quarter ended March 31, 2004 78.92 118.73420% $93.70 Quarter ended June 30, 2004 79.02 118.60762% $93.72 Quarter ended September 30, 2004 79.12 118.48104% $93.74 Quarter ended December 31, 2004 79.22 118.35446% $93.76 2005 Quarter ended March 31, 2005 79.31 118.22788% $93.77 Quarter ended June 30, 2005 79.41 118.10130% $93.79 Quarter ended September 30, 2005 79.51 117.97472% $93.81 Quarter ended December 31, 2005 79.61 117.84814% $93.82 2006 Quarter ended March 31, 2006 79.71 117.72156% $93.84 Quarter ended June 30, 2006 79.81 117.59498% $93.85 - -------------------- * This table assumes no events occurred that would require an adjustment to the conversion rate. A-2-8

(b) Conversion Based on Credit Rating. Subject to the provisions of this paragraph 8 and notwithstanding the fact any other condition to conversion has not been satisfied, Holders may convert the Securities into Common Stock on a Conversion Date during any period in which the credit rating assigned to the Securities by Standard & Poor's Ratings Services, a division of The McGraw-Hill Companies Inc., and its successors ("Standard & Poor's") or if Standard & Poor's is not making ratings of the Securities publicly available, a nationally recognized U.S. rating agency or agencies, as the case may be, selected by the Company, which will be substituted for Standard & Poor's, is below the Applicable Rating. "Applicable Rating" means, (1) BB-, in the case of Standard & Poor's (or its equivalent, under any successor ratings categories of Standard & Poor's) or (2) the equivalent in respect of ratings categories of any rating agencies substituted for Standard & Poor's. (c) Conversion Based on Redemption. Subject to the provisions of this paragraph 8 and notwithstanding the fact that any other condition to conversion has not been satisfied, a Holder may convert into Common Stock a Security or portion of a Security which has been called for redemption pursuant to paragraph 6 hereof, even if the foregoing provisions have not been satisfied, but such Securities may be surrendered for conversion until the close of business on the second Business Day immediately preceding the Redemption Date. (d) Conversion Upon Occurrence of Certain Corporate Transactions. Subject to the provisions of this paragraph 8 and notwithstanding the fact that any other condition to conversion has not been satisfied, in the event that the Company declares a dividend or distribution described in Section 11.07 of the Indenture, or a dividend or a distribution described in Section 11.08 of the Indenture where the fair market value of such dividend or distribution per share of Common Stock, as determined in the Indenture, exceeds 15% of the Sale Price of the Common Stock on the Business Day immediately preceding the date of declaration for such dividend or distribution, the Securities may be surrendered for conversion beginning on the date the Company gives notice to the Holders of such right, which shall not be less than 20 days prior to the Ex-Dividend Time for such dividend or distribution, and Securities may be surrendered for conversion at any time thereafter until the close of business on the Business Day prior to the Ex-Dividend Time or until the Company announces that such dividend or distribution will not take place. Subject to the provisions of this paragraph 8 and notwithstanding the fact that any other condition to conversion has not been satisfied, in the event the Company is a party to a consolidation, merger or binding share exchange or a transfer of all or substantially all assets of the Company pursuant to which the Common Stock would be converted into cash, securities or other property as set forth in Section 11.14 of the Indenture, the Securities may be surrendered for conversion at any time from and after the date which is 15 days prior to the date the Company announces the anticipated effective time until 15 days after the actual effective date of such transaction, and at the effective time of such transaction the right to convert a Security into Common Stock will be deemed to have changed into a right to convert it into the kind and amount of cash, securities or other property which the holder would have received if the holder had converted its Security immediately prior to the transaction. A Security in respect of which a Holder has delivered a Purchase Notice or Change in Control Purchase Notice exercising the option of such Holder to require the Company to A-2-9

purchase such Security may be converted only if such notice of exercise is withdrawn in accordance with the terms of the Indenture. The initial Conversion Rate is 11.6195 shares of Common Stock per $1,000 Principal Amount at Maturity, subject to adjustment in certain events described in the Indenture. The Company will deliver cash or a check in lieu of any fractional share of Common Stock. In the event the Company exercises its option pursuant to Section 10.01 of the Indenture to have interest in lieu of Original Issue Discount accrue on the Security following a Tax Event, the Holder will be entitled on conversion to receive the same number of shares of Common Stock such Holder would have received if the Company had not exercised such option. Accrued and unpaid interest in lieu of Original Issue Discount will not be paid on Securities that are converted; provided, however, that Securities surrendered for conversion during the period, in the case of interest in lieu of Original Issue Discount, from the close of business on any Regular Record Date next preceding any Interest Payment Date to the opening of business on such Interest Payment Date shall be entitled to receive such interest, in lieu of Original Issue Discount, payable on such Securities on the corresponding Interest Payment Date and (except Securities with respect to which the Company has mailed a notice of redemption) Securities surrendered for conversion during such periods must be accompanied by payment of an amount equal to the interest in lieu of Original Issue Discount with respect thereto that the registered Holder is to receive. To convert a Security, a Holder must (1) complete and manually sign the conversion notice below (or complete and manually sign a facsimile of such notice) and deliver such notice to the Conversion Agent, (2) surrender the Security to the Conversion Agent, (3) furnish appropriate endorsements and transfer documents if required by the Conversion Agent, the Company or the Trustee and (4) pay any transfer or similar tax, if required. A Holder may convert a portion of a Security if the Principal Amount at Maturity of such portion is $1,000 or an integral multiple of $1,000. No payment or adjustment will be made for dividends on the Common Stock except as provided in the Indenture. On conversion of a Security, that portion of accrued Original Issue Discount (or interest if the Company has exercised its option provided for in paragraph 10 hereof) attributable to the period from the Issue Date (or, if the Company has exercised the option referred to in paragraph 10 hereof, the later of (x) the date of such exercise and (y) the date on which interest was last paid) through the Conversion Date with respect to the converted Security shall not be canceled, extinguished or forfeited, but rather shall be deemed to be paid in full to the Holder thereof through the delivery of the Common Stock (together with the cash payment, if any, in lieu of fractional shares) in exchange for the Security being converted pursuant to the terms hereof; and the fair market value of such shares of Common Stock (together with any such cash payment in lieu of fractional shares) shall be treated as issued, to the extent thereof, first in exchange for Original Issue Discount (or interest, if the Company has exercised its option provided for in paragraph 10 hereof) accrued through the Conversion Date, and the balance, if any, of such fair market value of such Common Stock (and any such cash payment) shall be treated as issued in exchange for the Issue Price of the Security being converted pursuant to the provisions hereof. A-2-10

The Conversion Rate will be adjusted for dividends or distributions on Common Stock payable in Common Stock or other Capital Stock; subdivisions, combinations or certain reclassifications of Common Stock; distributions to all holders of Common Stock of certain rights to purchase Common Stock for a period expiring within 60 days at less than the Sale Price at the Time of Determination; and distributions to such holders of assets or debt securities of the Company or certain rights to purchase securities of the Company (excluding certain cash dividends or distributions). However, no adjustment need be made if Securityholders may participate in the transaction or in certain other cases. The Company from time to time may voluntarily increase the Conversion Rate. If the Company is a party to a consolidation, merger or binding share exchange or a transfer of all or substantially all of its assets, or upon certain distributions described in the Indenture, the right to convert a Security into Common Stock may be changed into a right to convert it into securities, cash or other assets of the Company or another person. 9. Conversion Arrangement on Call for Redemption. Any Securities called for redemption, unless surrendered for conversion before the close of business on the Redemption Date, may be deemed to be purchased from the Holders of such Securities at an amount not less than the Redemption Price, by one or more investment bankers or other purchasers who may agree with the Company to purchase such Securities from the Holders, to convert them into Common Stock of the Company and to make payment for such Securities to the Trustee in trust for such Holders. 10. Tax Event (a) From and after the later of (i) the date (the "Tax Event Date") of the occurrence of a Tax Event or (ii) the date the Company exercises such option (the "Option Exercise Date"), at the option of the Company, interest in lieu of future Original Issue Discount shall accrue at the rate of 0.50% per annum on a principal amount per Security (the "Restated Principal Amount") equal to the Issue Price plus Original Issue Discount accrued through the Option Exercise Date and shall be payable semiannually on May 7 and November 7of each year (each an "Interest Payment Date") to holders of record at the close of business on April 21 or October 22 (each a "Regular Record Date") immediately preceding such Interest Payment Date. Interest will be computed on the basis of a 360-day year comprised of twelve 30-day months and will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the Option Exercise Date. (b) Interest on any Security that is payable, and is punctually paid or duly provided for, on any Interest Payment Date shall be paid to the person in whose name that Security is registered at the close of business on the Regular Record Date for such interest at the office or agency of the Company maintained for such purpose. Each installment of interest on any Security shall be paid by check; provided that payment by wire transfer of immediately available funds will be required with respect to principal on and interest, if any, on all Global Securities and all other Securities the holders of which shall have provided wire transfer instructions to the Company or the Paying Agent for an account maintained by the payee located inside the United States. A-2-11

(c) Except as otherwise specified with respect to the Securities, any Defaulted Interest on any Security shall forthwith cease to be payable to the registered Holder thereof on the relevant Regular Record Date by virtue of having been such Holder, and such Defaulted Interest may be paid by the Company as provided for in Section 10.02(b) of the Indenture. 11. Denominations; Transfer; Exchange. The Securities are in fully registered form, without coupons, in denominations of $1,000 of Principal Amount at Maturity and integral multiples of $1,000. A Holder may transfer or exchange Securities in accordance with the Indenture. The Registrar may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and to pay any taxes and fees required by law or permitted by the Indenture. The Registrar need not transfer or exchange any Securities selected for redemption (except, in the case of a Security to be redeemed in part, the portion of the Security not to be redeemed) or any Securities in respect of which a Purchase Notice or Change in Control Purchase Notice has been given and not withdrawn (except, in the case of a Security to be purchased in part, the portion of the Security not to be purchased) or any Securities for a period of 15 days before the mailing of a notice of redemption of Securities to be redeemed. 12. Persons Deemed Owners. The registered Holder of this Security may be treated as the owner of this Security for all purposes. 13. Unclaimed Money or Securities. The Trustee and the Paying Agent shall return to the Company upon written request any money or securities held by them for the payment of any amount with respect to the Securities that remains unclaimed for two years subject to applicable unclaimed property law. After return to the Company, Holders entitled to the money or securities must look to the Company for payment as general creditors unless an applicable abandoned property law designates another person. 14. Amendment; Waiver. Subject to certain exceptions set forth in the Indenture, (i) the Indenture or the Securities may be amended with the written consent of the Holders of at least a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding and (ii) certain Defaults may be waived with the written consent of the Holders of a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding. Subject to certain exceptions set forth in the Indenture, without the consent of any Securityholder, the Company and the Trustee may amend the Indenture or the Securities to cure any ambiguity, omission, defect or inconsistency, or to comply with Article 5 or Section 11.14 of the Indenture, to provide for uncertificated Securities in addition to or in place of certificated Securities or to make any change that does not adversely affect the rights of any Securityholder, or to comply with any requirement of the SEC in connection with the qualification of the Indenture under the TIA. A-2-12

50 15. Defaults and Remedies. Under the Indenture, Events of Default include (i) if the Securities have been converted to semiannual coupon notes following a Tax Event, default in the payment of interest which default continues for a period of 30 days; (ii) default in payment of the Principal Amount at Maturity (or, if the Securities have been converted to semiannual coupon notes following a Tax Event, the Restated Principal Amount), Issue Price plus accrued Original Issue Discount, Redemption Price, Purchase Price or Change in Control Purchase Price, as the case may be, in respect of the Securities when the same becomes due and payable; (iii) failure by the Company to comply with other agreements in the Indenture or the Securities, subject to notice and lapse of time; (iv) default under any Debt, whether such Debt now exists or is created later, which default results in such Debt becoming or being declared due and payable prior to the date on which it would otherwise have become due and payable, and the principal amount of all Debt so accelerated, together with all Debt due and payable but not paid prior to the end of any grace period, is $30,000,000 or more, and such acceleration has not been rescinded or annulled within a period of 30 days after receipt by the Company of a Notice of Default, subject to notice and lapse of time; provided, however, that if any such default shall be cured, waived, rescinded or annulled, then the Event of Default by reason thereof shall be deemed not to have occurred; (v) final unsatisfied judgments not covered by insurance aggregating in excess of $30,000,000 rendered against the Company or the Operating Company and not stayed, bonded or discharged within 60 days; and (vi) certain events of bankruptcy or insolvency. If an Event of Default occurs and is continuing, the Trustee, or the Holders of at least 25% in aggregate Principal Amount at Maturity of the Securities at the time outstanding, may declare all the Securities to be due and payable immediately. Certain events of bankruptcy or insolvency are Events of Default which will result in the Securities becoming due and payable immediately upon the occurrence of such Events of Default. Holders may not enforce the Indenture or the Securities except as provided in the Indenture. The Trustee may refuse to enforce the Indenture or the Securities unless it receives reasonable indemnity or security. Subject to certain limitations, Holders of a majority in aggregate Principal Amount at Maturity of the Securities at the time outstanding may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from Securityholders notice of any continuing Default (except a Default in payment of amounts specified in clause (i) or (ii) above) if it determines that withholding notice is in their interests. 16. Trustee Dealings with the Company. Subject to certain limitations imposed by the TIA, the Trustee under the Indenture, in its individual or any other capacity, may become the owner or pledgee of Securities and may otherwise deal with and collect obligations owed to it by the Company or its Affiliates and may otherwise deal with the Company or its Affiliates with the same rights it would have if it were not Trustee. 17. No Recourse Against Others. A director, officer, employee or stockholder, as such, of the Company shall not have any liability for any obligations of the Company under the Securities or the Indenture or for any A-2-13

claim based on, in respect of or by reason of such obligations or their creation. By accepting a Security, each Securityholder waives and releases all such liability. The waiver and release are part of the consideration for the issue of the Securities. 18. Authentication This Security shall not be valid until an authorized signatory of the Trustee manually signs the Trustee's Certificate of Authentication on the other side of this Security. 19. Abbreviations. Customary abbreviations may be used in the name of a Securityholder or an assignee, such as TEN COM (=tenants in common), TEN ENT (=tenants by the entireties), JT TEN (=joint tenants with right of survivorship and not as tenants in common), CUST (=custodian), and U/G/M/A (=Uniform Gift to Minors Act). 20. GOVERNING LAW. THE LAWS OF THE STATE OF NEW YORK SHALL GOVERN THE INDENTURE AND THIS SECURITY, WITHOUT REGARD TO PRINCIPLES OF CONFLICT OF LAWS. ---------- The Company will furnish to any Securityholder upon written request and without charge a copy of the Indenture. Affiliated Managers Group, Inc. Two International Place Boston, MA 02110 Telephone No. (617) 747-3300 Facsimile No. (617) 747-3380 Attention: Treasurer A-2-14

ASSIGNMENT FORM CONVERSION NOTICE To assign this Security, fill in the To convert this Security into Common form below: Stock of the Company, check the box:|_| I or we assign and transfer this To convert only part of this Security, Security to state the Principal Amount at Maturity to be converted (which must be $1,000 ___________________________________ or an integral multiple of $1,000): $___________________________ ___________________________________ If you want the stock certificate made (Insert assignee's soc. sec. or out in another person's name, fill in tax ID no.) the form below: ___________________________________ ___________________________________ ___________________________________ (Print or type assignee's name, address ___________________________________ and zip code) (Insert other person's soc. sec. or and irrevocably appoint _____________ tax ID no.) agent to transfer this Security on the ___________________________________ books of the Company. The agent may substitute another to act for him. ___________________________________ (Print or type other person's name, address and zip code) Date: ___________________________ Your Signature: ___________________________* (Sign exactly as your name appears on the other side of this Security) * Your signature must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Trustee, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Trustee in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. A-2-15

EXHIBIT B-1 TRANSFER CERTIFICATE In connection with any transfer of any of the Securities within the period prior to the expiration of the holding period applicable to the sales thereof under Rule 144(k) under the Securities Act of 1933, as amended (the "Securities Act") (or any successor provision), the undersigned registered owner of this Security hereby certifies with respect to $1,000 Principal Amount at Maturity of the above-captioned securities presented or surrendered on the date hereof (the "Surrendered Securities") for registration of transfer, or for exchange or conversion where the securities issuable upon such exchange or conversion are to be registered in a name other than that of the undersigned registered owner (each such transaction being a "transfer"), that such transfer complies with the restrictive legend set forth on the face of the Surrendered Securities for the reason checked below: |_| The transfer of the Surrendered Securities complies with Rule 144 under the U.S. Securities Act of 1933, as amended (the "Securities Act"); or |_| The transfer of the Surrendered Securities complies with Rule 144A under the Securities Act; or |_| The transfer of the Surrendered Securities is to an institutional accredited investor, as described in Rule 501(a)(1), (2), (3) or (7) of Regulation D under the Securities Act; or |_| The transfer of the Surrendered Securities is pursuant to an effective registration statement under the Securities Act; or |_| The transfer of the Surrendered Securities is in an offshore transaction in accordance with Rule 904 of Regulation S under the Securities Act; or |_| The transfer of the Surrendered Securities is pursuant to another available exemption from the registration requirements of the Securities Act. and unless the box below is checked, the undersigned confirms that, to the undersigned's knowledge, such Securities are not being transferred to an "affiliate" of the Company as defined in Rule 144 under the Securities Act (an "Affiliate"). |_| The transferee is an Affiliate of the Company. DATE: ___________________________ _____________________________* Signature(s) B-1-1

(If the registered owner is a corporation, partnership or fiduciary, the title of the Person signing on behalf of such registered owner must be stated.) * Your signature must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Trustee, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Trustee in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. B-1-2

EXHIBIT B-2 Form of Letter to be Delivered by Accredited Investors Affiliated Managers Group, Inc. Two International Place Boston, MA 02110 Telephone No. (617) 747-3300 Facsimile No. (617) 747-3380 First Union National Bank One World Trade Center Suite 4711 New York, NY 10048 Telephone No. (212) 938-0779 Facsimile No. (212) 938-0821 Attention: Corporate Trust - Bond Administration Dear Ladies/Gentlemen: We are delivering this letter in connection with the proposed transfer of $_____________ Principal Amount at Maturity of the Liquid Yield Option Notes due 2021 ("LYONs") of Affiliated Managers Group, Inc. (the "Company"), which are convertible into shares of the Company's Common Stock, $0.01 par value per share (the "Common Stock"). We hereby confirm that: (i) we are an "accredited investor" within the meaning of Rule 501(a)(1), (2) or (3) under the Securities Act of 1933, as amended (the "Securities Act"), or an entity in which all of the equity owners are accredited investors within the meaning of Rule 501(a)(1), (2) or (3) under the Securities Act (an "Institutional Accredited Investor"); (ii) (A) the purchase of LYONs by us is for our own account or for the account of one or more other Institutional Accredited Investors or as fiduciary for the account of one or more trusts, each of which is an "accredited investor" within the meaning of Rule 501(a)(7) under the Securities Act and for each of which we exercise sole investment discretion or (B) we are a "bank," within the meaning of Section 3(a)(2) of the Securities Act, or a "savings and loan association" or other institution described in Section 3(a)(5)(A) of the Securities Act that is acquiring LYONs as fiduciary for the account of one or more institutions for which we exercise sole investment discretion; (iii) we have such knowledge and experience in financial and business matters that we are capable of evaluating the merits and risks of purchasing LYONs; and (iv) we are not acquiring LYONs with a view to distribution thereof or with any present intention of offering or selling LYONs or the Common Stock issuable upon conversion thereof, except as permitted below; provided that the disposition of our B-2-1

property and property of any accounts for which we are acting as fiduciary shall remain at all times within our control. We understand that the LYONs were originally offered and sold in a transaction not involving any public offering within the United States within the meaning of the Securities Act and that the LYONs and the shares of Common Stock (the "Securities") issuable upon conversion thereof have not been registered under the Securities Act, and we agree, on our own behalf and on behalf of each account for which we acquire any LYONs, that if in the future we decide to resell or otherwise transfer such Securities prior to the date (the "Resale Restriction Termination Date") which is two years after the later of the original issuance of the LYONs and the last date on which the Company or an affiliate of the Company was the owner of the Security, such Securities may be resold or otherwise transferred only (i) to Affiliated Managers Group, Inc. or any subsidiary thereof, or (ii) for as long as the LYONs are eligible for resale pursuant to Rule 144A, to a person it reasonably believes is a "qualified institutional buyer" (as defined in Rule 144A under the Securities Act) that purchases for its own account or for the account of a qualified institutional buyer to which notice is given that the transfer is being made in reliance on Rule 144A, or (iii) to an Institutional Accredited Investor that is acquiring the Security for its own account, or for the account of such an Institutional Accredited Investor for investment purposes and not with a view to, or for offer or sale in connection with, any distribution in violation of the Securities Act, or (iv) pursuant to a registration statement which has been declared effective under the Securities Act, or (v) in an offshore transaction in accordance with Rule 904 of Regulation S under the Securities Act or (vi) pursuant to another available exemption from registration under the Securities Act (if applicable) and, in each case, in accordance with any applicable securities laws of any State of the United States or any other applicable jurisdiction and in accordance with the legends set forth on the Securities. We further agree to provide any person purchasing any of the Securities other than pursuant to clause (iv) above from us a notice advising such purchaser that resales of such securities are restricted as stated herein. We understand that the trustee or the transfer agent, as the case may be, for the Securities will not be required to accept for registration of transfer any Securities pursuant to (iii), (v) or (vi) above except upon presentation of evidence satisfactory to the Company and the Trustee that the foregoing restrictions on transfer have been complied with. We further understand that any Securities will be in the form of definitive physical certificates and that such certificates will bear a legend reflecting the substance of this paragraph other than certificates representing Securities transferred pursuant to clause (iv) above. We acknowledge that the Company, others and you will rely upon our confirmations, acknowledgments and agreements set forth herein, and we agree to notify you promptly in writing if any of our representations or warranties herein ceases to be accurate and complete. B-2-2

THIS LETTER SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE INTERNAL LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAWS. _______________________________________ (Name of Purchaser) By: __________________________________ * Name: Title: Address: * Your signature must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Trustee, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Trustee in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. B-2-3

Exhibit 4.10 REGISTRATION RIGHTS AGREEMENT Dated as of May 7, 2001 by and between AFFILIATED MANAGERS GROUP, INC. And MERRILL LYNCH & CO. Merrill Lynch, Pierce, Fenner & Smith Incorporated Liquid Yield Option(TM) Notes due May 7, 2021 (Zero Coupon - Senior) - -------------------- (TM) Trademark of Merrill Lynch & Co., Inc.

REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT is made and entered into as of May 7, 2001 by and between Affiliated Managers Group, Inc., a Delaware corporation ("the Company"), and Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated, a Delaware corporation (the "Initial Purchaser") pursuant to the Purchase Agreement, dated as of May 1, 2001 (the "Purchase Agreement"), between the Company and the Initial Purchaser. In order to induce the Initial Purchaser to enter into the Purchase Agreement, the Company has agreed to provide the registration rights set forth in this Agreement. The execution of this Agreement is a condition to the closing under the Purchase Agreement. The Company agrees with the Initial Purchaser, (i) for its benefit as Initial Purchaser and (ii) for the benefit of the beneficial owners (including the Initial Purchaser) from time to time of the LYONs (as defined herein) and the beneficial owners from time to time of the Underlying Common Stock (as defined herein) issued upon conversion of the LYONs (each of the foregoing a "Holder" and together the "Holders"), as follows: Section 1. Definitions Capitalized terms used herein without definition shall have their respective meanings set forth in the Purchase Agreement. As used in this Agreement, the following terms shall have the following meanings: "Affiliate:" With respect to any specified person, an "affiliate," as defined in Rule 144, of such person. "Applicable Conversion Price:" The Applicable Conversion Price as of any date of determination means the Applicable Principal Amount per $1,000 principal amount at maturity of LYONs as of such date of determination divided by the Conversion Rate in effect as of such date of determination or, if no LYONs are then outstanding, the Conversion Rate that would be in effect were LYONs then outstanding. "Applicable Principal Amount:" Applicable Principal Amount as of any date of determination, with respect to each $1,000 principal amount at maturity of LYONs, means the sum of the initial issue price of such LYONs ($904.95) plus accrued original issue discount with respect to such LYON through such date of determination. "Business Day:" Each Monday, Tuesday, Wednesday, Thursday and Friday that is not a day on which banking institutions in The City of New York are authorized or obligated by law or executive order to close. "Common Stock:" The shares of Common Stock, $0.01 par value, of the Company and any other shares of common stock as may constitute "Common Stock" for purposes of the Indenture, including the Underlying Common Stock. "Company:" Affiliated Managers Group, Inc., a Delaware corporation.

"Conversion Rate:" Conversion Rate shall have the meaning assigned such term in the Indenture. "Damages Accrual Period:" See Section 2(e) hereof. "Damages Payment Date:" Each May 7 and November 7 in the case of LYONs and the Underlying Common Stock. "Deferral Notice:" See Section 3(h) hereof. "Deferral Period" See Section 3(h) hereof. "Effectiveness Deadline Date:" See Section 2(a) hereof. "Effectiveness Period:" The period beginning on the Issue Date and ending on the earlier of (a) the sale pursuant to the Initial Shelf Registration Statement of all Registrable Securities thereunder and (b) the expiration of the holding period applicable to such Registrable Securities held by persons not Affiliates of the Company under Rule 144(k) under the Securities Act. "Event:" See Section 2(e) hereof. "Event Termination Date:" See Section 2(e) hereof. "Event Date:" See Section 2(e) hereof. "Exchange Act:" The Securities Exchange Act of 1934, as amended, and the rules and regulations of the SEC promulgated thereunder. "Filing Deadline Date:" See Section 2(a) hereof. "Holder:" See the second paragraph of this Agreement. "Indenture:" The Indenture dated as of the date hereof between the Company and First Union National Bank, as trustee, pursuant to which the LYONs are being issued. "Initial Purchaser:" Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated. "Initial Shelf Registration Statement:" See Section 2(a) hereof. "Issue Date:" means May 7, 2001. "Liquidated Damages Amount:" See Section 2(e) hereof. "Losses:" See Section 6 hereof. "LYONs:" The Liquid Yield Option Notes due May 7, 2021 of the Company to be purchased pursuant to the Purchase Agreement. 2

"Material Event:" See Section 3(h) hereof. "Notice and Questionnaire:" A written notice delivered to the Company containing the information called for by the Selling Security Holder Notice and Questionnaire attached as Appendix A to the Offering Memorandum of the Company dated May 1, 2001 relating to the LYONs. "Notice Holder:" On any date, any Holder that has delivered a Notice and Questionnaire to the Company on or prior to such date. "Prospectus:" The prospectus included in any Registration Statement (including, without limitation, a prospectus that discloses information previously omitted from a prospectus filed as part of an effective registration statement in reliance upon Rule 415 promulgated under the Securities Act), as amended or supplemented by any amendment or prospectus supplement, including post-effective amendments, and all materials incorporated by reference or explicitly deemed to be incorporated by reference in such Prospectus. "Purchase Agreement:" See the first paragraph of this Agreement. "Record Holder:" With respect to any Damages Payment Date relating to any LYON or Underlying Common Stock as to which any Liquidated Damages Amount has accrued, the registered Holder of such LYON or Underlying Common Stock, as the case may be, 15 days prior to such Damages Payment Date. "Registrable Securities:" The LYONs and the Underlying Common Stock, until such securities have been converted or exchanged, and, at all times subsequent to any such conversion or exchange, any securities into or for which such securities have been converted or exchanged, and any security issued with respect thereto upon any stock dividend, split or similar event until, in the case of any such security, the earliest of (i) its effective registration under the Securities Act and resale in accordance with the Registration Statement covering it, (ii) expiration of the holding period that would be applicable thereto under Rule 144(k) were it not held by an Affiliate of the Company, (iii) its sale to the public pursuant to Rule 144 or (iv) the expiration of the Effectiveness Period. "Registration Expenses:" See Section 5 hereof. "Registration Statement:" Any registration statement of the Company that covers any of the Registrable Securities pursuant to the provisions of this Agreement, including the Prospectus, amendments and supplements to such registration statement, including post-effective amendments, all exhibits, and all materials incorporated by reference or explicitly deemed to be incorporated by reference in such registration statement. "Restricted Securities:" As this term is defined in Rule 144. "Rule 144:" Rule 144 under the Securities Act, as such Rule may be amended from time to time, or any successor rule or regulation hereafter adopted by the SEC. 3

"Rule 144A:" Rule 144A under the Securities Act, as such Rule may be amended from time to time, or any successor rule or regulation hereafter adopted by the SEC. "SEC:" The Securities and Exchange Commission. "Securities Act:" The Securities Act of 1933, as amended, and the rules and regulations promulgated by the SEC thereunder. "Shelf Registration Statement:" See Section 2(a) hereof. "Subsequent Shelf Registration Statement:" See Section 2(b) hereof. "TIA:" The Trust Indenture Act of 1939, as amended. "Trustee:" First Union National Bank (or any successor entity), the Trustee under the Indenture. "Underlying Common Stock:" The Common Stock into which the LYONs are convertible or issued upon any such conversion. Section 2. Shelf Registration (a) The Company shall prepare or cause to be prepared and shall use reasonable efforts to file or cause to be filed with the SEC, on or prior to the date (the "Filing Deadline Date") ninety (90) days after the Issue Date, a Registration Statement for an offering to be made on a delayed or continuous basis pursuant to Rule 415 of the Securities Act (a "Shelf Registration Statement") registering the resale from time to time by Holders thereof of all of the Registrable Securities (the "Initial Shelf Registration Statement"). The Initial Shelf Registration Statement shall be on Form S-3 or another appropriate form permitting registration of such Registrable Securities for resale by such Holders in accordance with the methods of distribution elected by the Holders and set forth in the Initial Shelf Registration Statement; provided, that in no event will such method(s) of distribution take the form of an underwritten offering of the Registrable Securities without the prior agreement of the Company. The Company shall use reasonable efforts to cause the Initial Shelf Registration Statement to be declared effective under the Securities Act on or prior to the date (the "Effectiveness Deadline Date") that is one hundred and eighty (180) days after the Issue Date, and to keep the Initial Shelf Registration Statement (or any Subsequent Shelf Registration Statement) continuously effective under the Securities Act until the end of the Effectiveness Period. At the time the Initial Shelf Registration Statement is declared effective, each Holder that became a Notice Holder on or prior to 10 Business Days prior to such time of effectiveness shall be named as a selling security Holder in the Initial Shelf Registration Statement and the related Prospectus in such a manner as to permit such Holder to deliver such Prospectus to purchasers of Registrable Securities in accordance with applicable law. (b) If the Initial Shelf Registration Statement or any Subsequent Shelf Registration Statement ceases to be effective for any reason at any time during the Effectiveness Period, the Company shall use reasonable efforts to obtain the prompt withdrawal of any order suspending the effectiveness thereof, and in any event shall within thirty (30) days of such cessation of 4

effectiveness amend the Shelf Registration Statement in a manner reasonably expected to obtain the withdrawal of the order suspending the effectiveness thereof, or file an additional Shelf Registration Statement covering all of the securities that as of the date of such filing are Registrable Securities (a "Subsequent Shelf Registration Statement"). If a Subsequent Shelf Registration Statement is filed, the Company shall use reasonable efforts to cause the Subsequent Shelf Registration Statement to become effective as promptly as is practicable after such filing and to keep such Registration Statement (or subsequent Shelf Registration Statement) continuously effective until the end of the Effectiveness Period. (c) The Company shall supplement and amend the Shelf Registration Statement if required by the rules, regulations or instructions applicable to the registration form used by the Company for such Shelf Registration Statement, if required by the Securities Act or, to the extent to which the Company does not reasonably object, as reasonably requested by the Initial Purchaser or by the Trustee on behalf of the registered Holders. (d) Each Holder of Registrable Securities agrees that if such Holder wishes to sell Registrable Securities pursuant to a Shelf Registration Statement and related Prospectus, it will do so only in accordance with this Section 2(d) and Section 3(h). Each Holder of Registrable Securities wishing to sell Registrable Securities pursuant to a Shelf Registration Statement and related Prospectus agrees to deliver a Notice and Questionnaire to the Company at least eight (8) and not more than twenty (20) Business Days prior to any intended distribution of Registrable Securities under the Shelf Registration Statement. From and after the date the Initial Shelf Registration Statement is declared effective, the Company shall, as promptly as is practicable after the date a Notice and Questionnaire is delivered, and in any event within five (5) Business Days after such date, (i) if required by applicable law, file with the SEC a post-effective amendment to the Shelf Registration Statement or prepare and, if required by applicable law, file a supplement to the related Prospectus or a supplement or amendment to any document incorporated therein by reference or file any other required document so that the Holder delivering such Notice and Questionnaire is named as a selling security Holder in the Shelf Registration Statement and the related Prospectus in such a manner as to permit such Holder to deliver such Prospectus to purchasers of the Registrable Securities in accordance with applicable law and, if the Company shall file a post-effective amendment to the Shelf Registration Statement, use reasonable efforts to cause such post-effective amendment to be declared effective under the Securities Act as promptly as is practicable; (ii) provide such Holder copies of any documents filed pursuant to Section 2(d)(i); and (iii) notify such Holder as promptly as practicable after the effectiveness under the Securities Act of any post-effective amendment filed pursuant to Section 2(d)(i); provided, that if such Notice and Questionnaire is delivered during a Deferral Period, the Company shall so inform the Holder delivering such Notice and Questionnaire and shall take the actions set forth in clauses (i), (ii) and (iii) above upon expiration of the Deferral Period in accordance with Section 3(h). Notwithstanding anything contained herein to the contrary, the Company shall be under no obligation to name any Holder that is not a Notice Holder as a selling security Holder in any Registration Statement or related Prospectus; provided, however, that any Holder that becomes a Notice Holder pursuant to the provisions of Section 2(d) of this Agreement (whether or not such Holder was a Notice Holder at the time the Registration Statement was declared effective) shall be named as a selling security Holder in the Registration Statement or related Prospectus in accordance with the requirements of this Section 2(d). 5

(e) The parties hereto agree that the Holders of Registrable Securities will suffer damages, and that it would not be feasible to ascertain the extent of such damages with precision, if (i) the Initial Shelf Registration Statement has not been filed on or prior to the Filing Deadline Date, (ii) the Initial Shelf Registration Statement has not been declared effective under the Securities Act on or prior to the Effectiveness Deadline Date, or (iii) the aggregate duration of Deferral Periods in any period exceeds the number of days permitted in respect of such period pursuant to Section 3(h) hereof (each of the events of a type described in any of the foregoing clauses (i) through (iii) are individually referred to herein as an "Event," and the Filing Deadline Date in the case of clause (i), the Effectiveness Deadline Date in the case of clause (ii), the date on which the aggregate duration of Deferral Periods in any period exceeds the number of days permitted by Section 3(h) hereof in the case of clause (iii), being referred to herein as an "Event Date"). Events shall be deemed to continue until the "Event Termination Date," which shall be the following dates with respect to the respective types of Events: the date the Initial Shelf Registration Statement is filed in the case of an Event of the type described in clause (i), the date the Initial Shelf Registration Statement is declared effective under the Securities Act in the case of an Event of the type described in clause (ii) and termination of the Deferral Period that caused the limit on the aggregate duration of Deferral Periods in a period set forth in Section 3(h) to be exceeded in the case of the commencement of an Event of the type described in clause (iii). Accordingly, commencing on (and including) any Event Date and ending on (but excluding) the next date on which there are no Events that have occurred and are continuing (a "Damages Accrual Period"), the Company agrees to pay, as liquidated damages and not as a penalty, an amount (the "Liquidated Damages Amount"), payable on (except as set forth in the following proviso) the Damages Payment Dates to Record Holders of then outstanding LYONs that are Registrable Securities and of then outstanding shares of Underlying Common Stock issued upon conversion of LYONs that are Registrable Securities, as the case may be, accruing, for each portion of such Damages Accrual Period beginning on and including a Damages Payment Date (or, in respect of the first time that the Liquidation Damages Amount is to be paid to Holders on a Damages Payment Date as a result of the occurrence of any particular Event, from the Event Date) and ending on but excluding the first to occur of (A) the date of the end of the Damages Accrual Period or (B) the next Damages Payment Date, at a rate per annum equal to one quarter of one percent (0.25%) for the first 90-day period from the Event Date, and thereafter at a rate per annum equal to one-half percent (0.5%) of the aggregate Applicable Principal Amount of such LYONs or the aggregate Applicable Conversion Price of such shares of Underlying Common Stock if such LYONs have been converted into Common Stock, as the case may be, in each case determined as of the Business Day immediately preceding the next Damages Payment Date (or, in the case of any LYON or portion thereof called for redemption or converted as provided for in the following proviso, determined as of the Business Day immediately preceding the applicable redemption date or conversion date, as the case may be); provided, that any Liquidated Damages Amount accrued with respect to any LYON or portion thereof called for redemption on a redemption date or converted into Underlying Common Stock on a conversion date prior to the Damages Payment Date, shall, in any such event, be paid instead to the Record Holder who submitted such LYON or portion thereof for redemption or conversion on the applicable redemption date or conversion date, as the case may be, on such date (or promptly following the conversion date, in the case of conversion). 6

Notwithstanding the foregoing, no Liquidated Damages Amounts shall accrue as to any Registrable Security from and after the earlier of (x) the date such security is no longer a Registrable Security and (y) expiration of the Effectiveness Period. The rate of accrual of the Liquidated Damages Amount with respect to any period shall not exceed the rate provided for in this paragraph notwithstanding the occurrence of multiple concurrent Events. Following the cure of all Events requiring the payment by the Company of Liquidated Damages Amounts to the Holders of Registrable Securities pursuant to this Section, the accrual of Liquidated Damages Amounts will cease (without in any way limiting the effect of any subsequent Event requiring the payment of Liquidated Damages Amount by the Company). The Trustee shall be entitled, on behalf of Holders of LYONs or Underlying Common Stock, to seek any available remedy for the enforcement of this Agreement, including for the payment of any Liquidated Damages Amount. Notwithstanding the foregoing, the parties agree that the sole remedy for a violation of the terms of this Agreement shall be such liquidated damages. All of the Company's obligations set forth in this Section 2(e) that are outstanding with respect to any Registrable Security at the time such security ceases to be a Registrable Security shall survive until such time as all such obligations with respect to such security have been satisfied in full (notwithstanding termination of this Agreement pursuant to Section 8(k)). The parties hereto agree that the liquidated damages provided for in this Section 2(e) constitute a reasonable estimate of the damages that may be incurred by Holders of Registrable Securities by reason of the failure of the Shelf Registration Statement to be filed or declared effective or available for effecting resales of Registrable Securities in accordance with the provisions hereof. Section 3. Registration Procedures In connection with the registration obligations of the Company under Section 2 hereof, the Company shall: (a) Before filing any Registration Statement or Prospectus or any amendments or supplements thereto with the SEC, furnish to the Initial Purchaser copies of all such documents proposed to be filed and give reasonable consideration to such comments as the Initial Purchaser reasonably shall propose within three (3) Business Days of the delivery of such copies to the Initial Purchaser. (b) Subject to the provisions of Section 3(h), prepare and file with the SEC such amendments and post-effective amendments to each Registration Statement as may be necessary to keep such Registration Statement continuously effective for the applicable period specified in Section 2(a); cause the related Prospectus to be supplemented by any required Prospectus supplement, and as so supplemented to be filed pursuant to Rule 424 (or any similar provisions then in force) under the Securities Act; and use all reasonable efforts to comply with the provisions of the Securities Act applicable to it with respect to the disposition of all securities covered by such Registration Statement during the Effectiveness Period in accordance with the 7

intended methods of disposition by the sellers thereof set forth in such Registration Statement as so amended or such Prospectus as so supplemented. (c) As promptly as practicable give notice to the Notice Holders and the Initial Purchaser (i) when any Prospectus, Prospectus supplement, Registration Statement or post-effective amendment to a Registration Statement (other than any such Prospectus supplement, Registration Statement or post-effective amendment to a Registration Statement which is filed solely to name additional selling security holders or to reflect any other matters that are not of a material nature) has been filed with the SEC and, with respect to a Registration Statement or any post-effective amendment, when the same has been declared effective, (ii) of any request, following the effectiveness of the Initial Shelf Registration Statement under the Securities Act, by the SEC or any other federal or state governmental authority for amendments or supplements to any Registration Statement or related Prospectus or for additional information, (iii) of the issuance by the SEC or any other federal or state governmental authority of any stop order suspending the effectiveness of any Registration Statement or the initiation or threatening of any proceedings for that purpose and (iv) of the receipt by the Company of any notification with respect to the suspension of the qualification or exemption from qualification of any of the Registrable Securities for sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose, which notice may, at the discretion of the Company (or as required pursuant to Section 3(h)), state that it constitutes a Deferral Notice, in which event the provisions of Section 3(h) shall apply. (d) Use all reasonable efforts to obtain the withdrawal of any order suspending the effectiveness of a Registration Statement or the lifting of any suspension of the qualification (or exemption from qualification) of any of the Registrable Securities for sale in any jurisdiction in which they have been qualified for sale, in either case at the earliest possible moment. (e) Promptly as reasonably practicable furnish to each Notice Holder and the Initial Purchaser, upon their request and without charge, at least one (1) conformed copy of the Registration Statement and any amendment thereto, including financial statements but excluding schedules, all documents incorporated or deemed to be incorporated therein by reference and all exhibits (unless requested in writing to the Company by such Notice Holder or the Initial Purchaser, as the case may be). (f) During the Effectiveness Period, deliver to each Notice Holder in connection with any sale of Registrable Securities pursuant to a Registration Statement, without charge, as many copies of the Prospectus or Prospectuses relating to such Registrable Securities (including each preliminary prospectus) and any amendment or supplement thereto as such Notice Holder may reasonably request; and the Company hereby consents (except during such periods that a Deferral Notice is outstanding and has not been revoked) to the use of such Prospectus or each amendment or supplement thereto by each Notice Holder in connection with any offering and sale of the Registrable Securities covered by such Prospectus or any amendment or supplement thereto in the manner set forth therein. (g) Prior to any public offering of the Registrable Securities pursuant to the Shelf Registration Statement, use all reasonable efforts to register or qualify or cooperate with the Notice Holders in connection with the registration or qualification (or exemption from such 8

registration or qualification) of such Registrable Securities for offer and sale under the securities or Blue Sky laws of such jurisdictions within the United States as any Notice Holder reasonably requests in writing (which request may be included in the Notice and Questionnaire); prior to any public offering of the Registrable Securities pursuant to the Shelf Registration Statement, use all reasonable efforts to keep each such registration or qualification (or exemption therefrom) effective during the Effectiveness Period in connection with such Notice Holder's offer and sale of Registrable Securities pursuant to such registration or qualification (or exemption therefrom) and do any and all other acts or things necessary to enable the disposition in such jurisdictions of such Registrable Securities in the manner set forth in the relevant Registration Statement and the related Prospectus; provided, that the Company will not be required to (i) qualify as a foreign corporation or as a dealer in securities in any jurisdiction where it would not otherwise be required to qualify but for this Agreement or (ii) take any action that would subject it to general service of process in suits or to taxation in any such jurisdiction where it is not then so subject. (h) Upon (A) the issuance by the SEC of a stop order suspending the effectiveness of the Shelf Registration Statement or the initiation of proceedings with respect to the Shelf Registration Statement under Section 8(d) or 8(e) of the Securities Act, (B) the occurrence of any event or the existence of any fact (a "Material Event") as a result of which any Registration Statement shall contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading, or any Prospectus shall contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or (C) the occurrence or existence of any pending corporate development that, in the discretion of the Company, makes it appropriate to suspend the availability of the Shelf Registration Statement and the related Prospectus, (i) in the case of clause (B) above, subject to the next sentence, as promptly as practicable prepare and file a post-effective amendment to such Registration Statement or a supplement to the related Prospectus or any document incorporated therein by reference or file any other required document that would be incorporated by reference into such Registration Statement and Prospectus so that such Registration Statement does not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading, and such Prospectus does not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, as thereafter delivered to the purchasers of the Registrable Securities being sold thereunder, and, in the case of a post-effective amendment to a Registration Statement, subject to the next sentence, use all reasonable efforts to cause it to be declared effective as promptly as is reasonably practicable, and (ii) give notice to the Notice Holders that the availability of the Shelf Registration Statement is suspended (a "Deferral Notice") and, upon receipt of any Deferral Notice, each Notice Holder agrees not to sell any Registrable Securities pursuant to the Registration Statement until such Notice Holder's receipt of copies of the supplemented or amended Prospectus provided for in clause (i) above, or until it is advised in writing by the Company that the Prospectus may be used, and has received copies of any additional or supplemental filings that are incorporated or deemed incorporated by reference in such Prospectus. The Company will use all reasonable efforts to ensure that the use of the Prospectus may be resumed (x) in the case of clause (A) above, as promptly as is practicable, (y) in the case of clause (B) above, as soon as, in the sole judgment of the Company, public 9

disclosure of such Material Event would not be prejudicial to or contrary to the interests of the Company or, if necessary to avoid unreasonable burden or expense, as soon as reasonably practicable thereafter and (z) in the case of clause (C) above, as soon as, in the sole judgment of the Company, such suspension is no longer appropriate. The period during which the availability of the Registration Statement and any Prospectus is suspended (the "Deferral Period") shall, without the Company incurring any obligation to pay liquidated damages pursuant to Section 2(e), not exceed thirty (30) days in any three (3) month period or ninety (90) days in any twelve (12) month period. (i) Comply with all applicable rules and regulations of the SEC and make generally available to its securityholders earning statements (which need not be audited) satisfying the provisions of Section 11(a) of the Securities Act and Rule 158 thereunder (or any similar rule promulgated under the Securities Act) no later than 45 days after the end of any 12-month period (or 90 days after the end of any 12-month period if such period is a fiscal year) commencing on the first day of the first fiscal quarter of the Company commencing after the effective date of a Registration Statement, which statements shall cover said 12-month periods. (j) If reasonably requested in writing by a Holder or Holders of Registrable Securities and solely at the Company's discretion, the Company will consider an underwritten offering of Registrable Securities held by such Holder or Holders upon terms and conditions to be agreed upon at the time of such underwritten offering. (k) Cooperate with each Notice Holder to facilitate the timely preparation and delivery of certificates representing Registrable Securities sold pursuant to a Registration Statement, and cause such Registrable Securities to be in such denominations as are permitted by the Indenture and registered in such names as such Notice Holder may request in writing at least two Business Days prior to any sale of such Registrable Securities. (l) Provide a CUSIP number for all Registrable Securities covered by each Registration Statement not later than the effective date of such Registration Statement and provide the Trustee for the LYONs and the transfer agent for the Common Stock with printed certificates for the Registrable Securities that are in a form eligible for deposit with The Depository Trust Company. (m) Make a reasonable effort to provide such information as is required for any filings required to be made with the National Association of Securities Dealers, Inc. (n) Upon (i) the filing of the Initial Shelf Registration Statement and (ii) the effectiveness of the Initial Shelf Registration Statement, announce the same, in each case by release to Reuters Economic Services and Bloomberg Business News. (o) Cause the Indenture to be qualified under the TIA not later than the effective date of any Registration Statement; and in connection therewith, cooperate with the Trustee to effect such changes to the Indenture as may be required for the Indenture to be so qualified in accordance with the terms of the TIA and execute, and use all reasonable efforts to cause the Trustee to execute, all documents as may be required to effect such changes, and all other forms 10

and documents required to be filed with the SEC to enable the Indenture to be so qualified in a timely manner. Section 4. Holder's Obligations Each Holder agrees, by acquisition of the Registrable Securities, that no Holder of Registrable Securities shall be entitled to sell any of such Registrable Securities pursuant to a Registration Statement or to receive a Prospectus relating thereto, unless such Holder has furnished the Company with a Notice and Questionnaire as required pursuant to Section 2(d) hereof (including the information required to be included in such Notice and Questionnaire) and the information set forth in the next sentence. Each Notice Holder agrees promptly to furnish to the Company all information required to be disclosed in order to make the information previously furnished to the Company by such Notice Holder not misleading and any other information regarding such Notice Holder and the distribution of such Registrable Securities as may be required to be disclosed in the Registration Statement under applicable law or pursuant to SEC comments. Each Holder further agrees, following termination of the Effectiveness Period, to notify the Company, within 10 Business Days of request, of the amount of Registrable Securities sold pursuant to the Registration Statement and, in the absence of a response, the Company may assume that all of the Holder's Registrable Securities were so sold. Section 5. Registration Expenses The Company shall bear all fees and expenses incurred in connection with the performance by the Company of its obligations under Sections 2 and 3 of this Agreement whether or not any of the Registration Statements are declared effective. Such fees and expenses shall include, without limitation, (i) all registration and filing fees (including, without limitation, fees and expenses (x) with respect to filings, if any, required to be made by the Company with the National Association of Securities Dealers, Inc. and (y) of compliance with federal and state securities or Blue Sky laws (including, without limitation, reasonable fees and disbursements of the counsel specified in the next sentence in connection with Blue Sky qualifications of the Registrable Securities under the laws of such jurisdictions as the Notice Holders of a majority of the Registrable Securities being sold pursuant to a Registration Statement may designate), (ii) printing expenses (including, without limitation, expenses of printing certificates for Registrable Securities in a form eligible for deposit with The Depository Trust Company), (iii) duplication expenses relating to copies of any Registration Statement or Prospectus delivered to any Holders hereunder, (iv) fees and disbursements of counsel for the Company in connection with the Shelf Registration Statement, and (v) reasonable fees and disbursements of the Trustee and its counsel and of the registrar and transfer agent for the Common Stock. In addition, the Company shall bear or reimburse the Notice Holders for the reasonable fees and disbursements of one firm of legal counsel for the Holders incurred in reviewing and commenting upon the Shelf Registration Statement prior to its effectiveness, which shall, upon the written consent of the Initial Purchaser (which shall not be unreasonably withheld), be a nationally recognized law firm experienced in securities law matters designated by the Company. In addition, the Company shall pay the internal expenses of the Company (including, without limitation, all salaries and expenses of officers and employees performing legal or accounting duties), the expense of any annual audit, the fees and expenses incurred in connection with the listing of the Registrable Securities on any 11

securities exchange on which similar securities of the Company are then listed and the fees and expenses of any person, including special experts, retained by the Company. Section 6. Indemnification; Contribution. (a) The Company agrees to indemnify and hold harmless the Initial Purchaser and each Holder of Registrable Securities and each person, if any, who controls the Initial Purchaser or any Holder of Registrable Securities within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act, as follows: (i) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, resulting from any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement (or any amendment thereto), or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading or resulting from any untrue statement or alleged untrue statement of a material fact included in any preliminary prospectus or the Prospectus (or any amendment or supplement thereto), or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; (ii) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, to the extent of the aggregate amount paid in settlement of any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or of any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission, provided that (subject to Section 6(d) below) any such settlement is effected with the prior written consent of the Company; and (iii) subject to Section 6(c) below, against any and all expense whatsoever, as incurred (including the fees and disbursements of counsel), reasonably incurred in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission, to the extent that any such expense is not paid under (i) or (ii) above; provided, however, that this indemnity agreement shall not apply to any loss, liability, claim, damage or expense to the extent arising out of any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with written information furnished to the Company by or on behalf of the Initial Purchaser or any Holder of Registrable Securities and each person, if any, who controls the Initial Purchaser or any such Holder of Registrable Securities expressly for use in the Registration Statement (or any amendment thereto), or any preliminary prospectus or the Prospectus (or any amendment or supplement thereto); provided, further, that this indemnity agreement shall not apply to any loss, liability, claim, damage or expense (1) arising from an offer or sale of Registrable Securities occurring during a Deferral Period, if a Notice Holder was given a Deferral Notice, or (2) a Holder fails to 12

deliver at or prior to the written confirmation of sale, the most recent Prospectus, as amended or supplemented, and such Prospectus, as amended or supplemented, would have corrected such untrue statement or alleged untrue statement of a material fact or would have included the omitted or allegedly omitted statement of a material fact. (b) In connection with any Shelf Registration in which a Holder, including, without limitation, the Initial Purchaser, of Registrable Securities is participating, in furnishing information relating to such Holder of Registrable Securities to the Company in writing expressly for use in such Registration Statement, any preliminary prospectus, the Prospectus or any amendments or supplements thereto, the Holders of such Registrable Securities agree, severally and not jointly, to indemnify and hold harmless the Initial Purchaser and each person, if any, who controls the Initial Purchaser within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act and the Company, and each person, if any, who controls the Company within the meaning of either such Section, against any and all loss, liability, claim, damage and expense described in the indemnity contained in subsection (a) of this Section, as incurred, but only with respect to untrue statements or omissions, or alleged untrue statements or omissions, made in the Registration Statement (or any amendment thereto), or any preliminary prospectus or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with written information furnished to the Company by or on behalf of such Holder of Registrable Securities (which also acknowledges the indemnity provisions herein) and each person, if any, who controls any such Holder of Registrable Securities expressly for use in the Registration Statement (or any amendment thereto) or such preliminary prospectus or the Prospectus (or any amendment or supplement thereto). The Initial Purchaser agrees to indemnify and hold harmless the Company, the Holders of Registrable Securities, and each person, if any, who controls the Company or any Holder of Registrable Securities within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act against any and all loss, liability, claim, damage and expense described in the indemnity contained in subsection (a) of this Section, as incurred, but only with respect to untrue statements or omissions, or alleged untrue statements or omissions, made in the Registration Statement (or any amendment thereto), or any preliminary prospectus or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with written information furnished to the Company by or on behalf of the Initial Purchaser expressly for use in the Registration Statement (or any amendment thereto) or such preliminary prospectus or the Prospectus (or any amendment or supplement thereto). (c) Each indemnified party shall give notice as promptly as reasonably practicable to each indemnifying party of any action commenced against it in respect of which indemnity may be sought hereunder, but failure to so notify an indemnifying party shall not relieve such indemnifying party from any liability hereunder to the extent it is not materially prejudiced as a result thereof and in any event shall not relieve it from any liability which it may have otherwise than on account of this indemnity agreement. The indemnifying party, upon request of the indemnified party, shall retain counsel reasonably satisfactory to the indemnified party to represent the indemnified party and any others the indemnifying party may designate in such proceeding and shall pay the fees and disbursements of such counsel related to such proceeding. In any such proceeding, any indemnified party shall have the right to retain its own counsel, but the fees and expenses of such counsel shall be at the expense of such indemnified party unless (i) 13

the indemnifying party and the indemnified party shall have mutually agreed to the retention of such counsel or (ii) the named parties to any such proceeding (including any impleaded parties) include both the indemnifying party and the indemnified party and representation of both parties by the same counsel would be inappropriate due to actual or potential differing interests between them. It is understood that the indemnifying party shall not, in respect of the legal expenses of any indemnified party in connection with any proceeding or related proceedings in the same jurisdiction, be liable for (a) the fees and expenses of more than one separate firm (in addition to any local counsel) for the Initial Purchaser, Holders of Registrable Securities, and all persons, if any, who control the Initial Purchaser and Holders of Registrable Securities within the meaning of either Section 15 of the 1933 Act or Section 20 of the 1934 Act, (b) the fees and expenses of more than one separate firm (in addition to any local counsel) for the Company, its directors, and each person, if any, who controls the Company within the meaning of either such Section, and that all such fees and expenses shall be reimbursed as they are incurred. In the case of any such separate firm for the Initial Purchaser, Holders of Registrable Securities, and control persons of the Initial Purchaser and Holders of Registrable Securities, such firm shall be designated in writing by the Initial Purchaser. In the case of any such separate firm for the Company, and such directors, officers and control persons of the Company, such firm shall be designated in writing by the Company. The indemnifying party shall not be liable for any settlement of any proceeding effected without its written consent, but if settled with such consent or if there be a final judgment for the plaintiff, the indemnifying party agrees to indemnify the indemnified party from and against any loss or liability by reason of such settlement or judgment. Notwithstanding the foregoing sentence, if at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel as contemplated by the second and third sentences of this paragraph, the indemnifying party agrees that it shall be liable for any settlement of any proceeding effected without its written consent if (i) such settlement is entered into more than 45 days after receipt by such indemnifying party of the aforesaid request, (ii) such indemnifying party shall have received notice of the terms of such settlement at least 30 days prior to such settlement being entered into and (iii) such indemnifying party shall not have reimbursed the indemnified party in accordance with such request prior to the date of such settlement. Notwithstanding the immediately preceding sentence, if at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel, an indemnifying party shall not be liable for any settlement effected without its consent if such indemnifying party (i) reimburses such indemnified party in accordance with such request to the extent it considers such request to be reasonable and (ii) provides written notice to the indemnified party substantiating the unpaid balance as unreasonable, in each case prior to the date of such settlement. No indemnifying party shall, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever in respect of which indemnification or contribution could be sought under this Section 6 hereof (whether or not the indemnified parties are actual or potential parties thereto), unless such settlement, compromise or consent (i) includes an unconditional release of each indemnified party from all liability arising out of such litigation, investigation, proceeding or claim and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act by or on behalf of any indemnified party. (d) If at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel, such indemnifying party 14

agrees that it shall be liable for any settlement of the nature contemplated by Section 6(a)(ii) effected without its written consent if (i) such settlement is entered into more than 45 days after receipt by such indemnifying party of aforesaid request, (ii) such indemnifying party shall have received notice of the terms of such settlement at least 30 days prior to such settlement being entered into and (iii) such indemnifying party shall not have reimbursed such indemnified party in accordance with such request prior to the date of such settlement. Notwithstanding the immediately preceding sentence, if at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel, an indemnifying party shall not be liable for any settlement of the nature contemplated by Section 6(a)(ii) effected without its consent if such indemnifying party (i) reimburses such indemnified party in accordance with such request to the extent it considers such request to be reasonable and (ii) provides written notice to the indemnified party substantiating the unpaid balance as unreasonable, in each case prior to the date of such settlement. (e) If the indemnification provided for in this Section 6 is for any reason unavailable to or insufficient to hold harmless an indemnified party in respect of any losses, liabilities, claims, damages or expenses referred to therein, then each indemnifying party shall contribute to the aggregate amount of such losses, liabilities, claims, damages and expenses incurred by such indemnified party, as incurred, in such proportion as is appropriate to reflect the relative fault of the indemnifying party or parties on the one hand and of the indemnified party on the other hand in connection with the statements or omissions which resulted in such losses, liabilities, claims, damages or expenses, as well as any other relevant equitable considerations. The relative fault of the Company on the one hand and the Holders of the Registrable Securities or the Initial Purchaser on the other hand shall be determined by reference to, among other things, whether any such untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by the Company or by the Holders of the Registrable Securities or the Initial Purchaser and the parties' relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The parties hereto agree that it would not be just and equitable if contribution pursuant to this Section 6(e) were determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations referred to above in this Section 6(e). The aggregate amount of losses, liabilities, claims, damages, and expenses incurred by an indemnified party and referred to above in this Section 6(e) shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue or alleged untrue statement or omission or alleged omission. Notwithstanding the provisions of this Section 6, neither the Holder of any Registrable Securities nor the Initial Purchaser, shall be required to indemnify or contribute any amount in excess of the amount by which the total price at which the Registrable Securities sold by such Holder of Registrable Securities or unwritten by the Initial Purchaser, as the case may be, and distributed to the public were offered to the public exceeds the amount of any damages that such 15

Holder of Registrable Securities or the Initial Purchaser has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. For purposes of this Section 6(e), each person, if any, who controls the Initial Purchaser or any Holder of Registrable Securities within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act shall have the same rights to contribution as the Initial Purchaser or such Holder, and each person, if any, who controls the Company within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act shall have the same rights to contribution as the Company. Section 7. Information Requirements The Company covenants that, if at any time before the end of the Effectiveness Period the Company is not subject to the reporting requirements of the Exchange Act, it will reasonably cooperate with any Holder of Registrable Securities and take such further reasonable action as any Holder of Registrable Securities may reasonably request in writing (including, without limitation, making such reasonable representations as any such Holder may reasonably request), all to the extent required from time to time to enable such Holder to sell Registrable Securities without registration under the Securities Act within the limitation of the exemptions provided by Rule 144 and Rule 144A under the Securities Act and customarily taken in connection with sales pursuant to such exemptions; provided, however, that any legal opinion required by any trustee or transfer agent shall be the responsibility of such Holder. Upon the written request of any Holder of Registrable Securities, the Company shall deliver to such Holder a written statement as to whether it has complied with such filing requirements, unless such a statement has been included in the Company's most recent report required to be filed and filed pursuant to Section 13 or Section 15(d) of Exchange Act. Notwithstanding the foregoing, nothing in this Section 7 shall be deemed to require the Company to register any of its securities under any section of the Exchange Act. Section 8. Miscellaneous (a) No Conflicting Agreements. The Company is not, as of the date hereof, a party to, nor shall it, on or after the date of this Agreement, enter into, any agreement with respect to its securities that conflicts with the rights granted to the Holders of Registrable Securities in this Agreement. The Company represents and warrants that the rights granted to the Holders of Registrable Securities hereunder do not conflict in any material respect with the rights granted to the Holders of the Company's securities under any other agreements. (b) Amendments and Waivers. The provisions of this Agreement, including the provisions of this sentence, may not be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be given, unless the Company has obtained the written consent of Holders of a majority of the then outstanding shares of Underlying Common Stock constituting Registrable Securities (with Holders of LYONs deemed 16

to be the Holders, for purposes of this Section, of the number of outstanding shares of Underlying Common Stock into which such LYONs are or would be convertible or exchangeable as of the date on which such consent is requested). Notwithstanding the foregoing, a waiver or consent to depart from the provisions hereof with respect to a matter that relates exclusively to the rights of Holders of Registrable Securities whose securities are being sold pursuant to a Registration Statement and that does not directly or indirectly affect the rights of other Holders of Registrable Securities may be given by Holders of at least a majority of the Registrable Securities being sold by such Holders pursuant to such Registration Statement; provided, that the provisions of this sentence may not be amended, modified, or supplemented except in accordance with the provisions of the immediately preceding sentence. Each Holder of Registrable Securities outstanding at the time of any such amendment, modification, supplement, waiver or consent or thereafter shall be bound by any such amendment, modification, supplement, waiver or consent effected pursuant to this Section 8(b), whether or not any notice, writing or marking indicating such amendment, modification, supplement, waiver or consent appears on the Registrable Securities or is delivered to such Holder. (c) Notices. All notices and other communications provided for or permitted hereunder shall be made in writing by hand delivery, by telecopier, by courier guaranteeing overnight delivery or by first-class mail, return receipt requested, and shall be deemed given (i) when made, if made by hand delivery, (ii) upon confirmation, if made by telecopier, (iii) one (1) Business Day after being deposited with such courier, if made by overnight courier or (iv) on the date indicated on the notice of receipt, if made by first-class mail, to the parties as follows: (w) if to a Holder of Registrable Securities that is not a Notice Holder, at the address for such Holder then appearing in the Registrar (as defined in the Indenture); (x) if to a Notice Holder, at the most current address given by such Holder to the Company in a Notice and Questionnaire or any amendment thereto; (y) if to the Company, to: Affiliated Managers Group, Inc. Two International Place Boston, MA 02110 Attention: Treasurer Telecopy No.: (617) 747-3380 and (z) if to the Initial Purchaser, to: Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated World Financial Center North Tower 250 Vesey Street New York, New York 10080 Attention: Syndicate Department Telecopy No.: (212) 449-1000 17

or to such other address as such person may have furnished to the other persons identified in this Section 8(c) in writing in accordance herewith. (d) Approval of Holders. Whenever the consent or approval of Holders of a specified percentage of Registrable Securities is required hereunder, Registrable Securities held by the Company or its affiliates (as such term is defined in Rule 405 under the Securities Act) (other than the Initial Purchaser or subsequent Holders of Registrable Securities if such subsequent Holders are deemed to be such affiliates solely by reason of their holdings of such Registrable Securities) shall not be counted in determining whether such consent or approval was given by the Holders of such required percentage. (e) Successors and Assigns. Any person who purchases any Registrable Securities from the Initial Purchaser shall be deemed, for purposes of this Agreement, to be an assignee of the Initial Purchaser. This Agreement shall inure to the benefit of and be binding upon the successors and assigns of each of the parties and shall inure to the benefit of and be binding upon each Holder of any Registrable Securities other than any Holder which asserts that this Agreement is not binding upon it. (f) Counterparts. This Agreement may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed shall be deemed to be original and all of which taken together shall constitute one and the same agreement. (g) Headings. The headings in this Agreement are for convenience of reference only and shall not limit or otherwise affect the meaning hereof. (h) GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. (i) Severability. If any term, provision, covenant or restriction of this Agreement is held to be invalid, illegal, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions set forth herein shall remain in full force and effect and shall in no way be affected, impaired or invalidated thereby, and the parties hereto shall use their best efforts to find and employ an alternative means to achieve the same or substantially the same result as that contemplated by such term, provision, covenant or restriction, it being intended that all of the rights and privileges of the parties shall be enforceable to the fullest extent permitted by law. (j) Entire Agreement. This Agreement is intended by the parties as a final expression of their agreement and is intended to be a complete and exclusive statement of the agreement and understanding of the parties hereto in respect of the subject matter contained herein and the registration rights granted by the Company with respect to the Registrable Securities. Except as provided in the Purchase Agreement, there are no restrictions, promises, warranties or undertakings, other than those set forth or referred to herein, with respect to the registration rights granted by the Company with respect to the Registrable Securities. This Agreement supersedes all prior agreements and undertakings among the parties with respect to such registration rights. 18

(k) Termination. This Agreement and the obligations of the parties hereunder shall terminate upon the end of the Effectiveness Period, except for any liabilities or obligations under Sections 4, 5 or 6 hereof and the obligations to make payments of and provide for liquidated damages under Section 2(e) hereof to the extent such damages accrue prior to the end of the Effectiveness Period, each of which shall remain in effect in accordance with its terms. 19

IN WITNESS WHEREOF, the parties have executed this Registration Rights Agreement as of the date first written above. AFFILIATED MANAGERS GROUP, INC. By /s/ Darrell W. Crate ------------------------------ Name: Darrell W. Crate Title: Sr. Vice President and Chief Financial Officer Accepted as of the date first above written: MERRILL LYNCH & CO. MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED By: /s/ Robert Aberman ----------------------------- Name: Robert Aberman Title: Vice President 20