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1 UNITED STATES ------------------------- SECURITIES AND EXCHANGE COMMISSION OMB APPROVAL WASHINGTON, D.C. 20549 ------------------------- OMB Number 3235-0145 SCHEDULE 13G Expires: 31-Aug-91 Estimated Average burden hours per response ------------------------- UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO.___)* Affiliated Managers Group, Inc. - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock Par Value $.01 - -------------------------------------------------------------------------------- (Title of Class of Securities) 008252 10 8 ------------------------------------ (CUSIP Number) Check the following box if a fee is being paid with this statement [ ]. (A fee is not required only if the filing person: (1) has a previous statement on file reporting beneficial ownership of more than five percent of the class of securities described in Item 1; and (2) has filed no amendment subsequent thereto reporting beneficial ownership of five percent or less of such class.) (See Rule 13d-7). *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). SEC 1745 (10-88) Page 1 2 - --------------------- ------ CUSIP NO. 008252 10 8 13G PAGE 2 - --------------------- ------ *SEE INSTRUCTION BEFORE FILLING OUT!
- -------------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Advent VII L.P. 04-3181563 Advent Industrial II L.P. 51-0314268 Advent New York L.P. 04-3095408 Advent Atlantic and Pacific II L.P. 04-3123521 TA Venture Investors L.P. 04-3068354 - -------------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] - -------------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Advent VII L.P. Delaware Advent Industrial II L.P. Delaware Advent New York L.P. Delaware Advent Atlantic and Pacific II L.P. Delaware TA Venture Investors L.P. Massachusetts - -------------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF Advent VII L.P. 2,596,756 Advent Industrial II L.P. 192,525 Advent New York L.P. 259,691 SHARES Advent Atlantic and Pacific II L.P. 633,956 TA Venture Investors L.P. 42,841 BENEFICIALLY ------------------------------------------------------------------------------------------ 6 SHARED VOTING POWER OWNED BY N/A ------------------------------------------------------------------------------------------ EACH 7 SOLE DISPOSITIVE POWER REPORTING Advent VII L.P. 2,596,756 Advent Industrial II, L.P. 192,525 Advent New York L.P. 259,691 PERSON Advent Atlantic and Pacific II L.P. 633,956 TA Venture Investors L.P. 42,841 WITH ------------------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER N/A - --------------------------------------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON Advent VII L.P. 2,596,756 Advent Industrial II L.P. 192,525 Advent New York L.P. 259,691 Advent Atlantic and Pacific II L.P. 633,956 TA Venture Investors L.P. 42,841 - -------------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - -------------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 Advent VII L.P. 15.66 Advent Industrial II L.P. 1.16 Advent New York L.P. 1.57 Advent Atlantic and Pacific II L.P. 3.82 TA Venture Investors L.P. .26 - -------------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON Each entity is a Limited Partnership - -------------------------------------------------------------------------------------------------------------- 3 ATTACHMENT TO FORM 13G Page 3 ITEM 1(a) NAME OF ISSUER: Affiliated Managers Group, Inc. ITEM 1(b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES: Two International Place Floor 23 Boston, MA 02110 ITEM 2(a) NAME OF PERSON FILING: Advent VII L.P. Advent Industrial II L.P. Advent New York L.P. Advent Atlantic and Pacific II L.P. TA Venture Investors L.P. ITEM 2(b) ADDRESS OF PRINCIPAL BUSINESS OFFICE: c/o TA Associates 125 High Street, Suite 2500 Boston, MA 02110 ITEM 2(c) CITIZENSHIP: Not Applicable ITEM 2(d) TITLE AND CLASS OF SECURITIES: Common ITEM 2(e) CUSIP NUMBER: 008252 10 8 ITEM 3 IF THIS STATEMENT IS FILED PURSUANT TO RULES 13d-1(b) OR 13d-2(b), CHECK WHETHER THE PERSON FILING IS A: Not Applicable ITEM 4 OWNERSHIP ITEM 4(a) AMOUNT BENEFICIALLY OWNED: COMMON STOCK ------------ Advent VII L.P. 2,596,756 Advent Industrial II L.P. 192,525 Advent New York L.P. 259,691 Advent Atlantic and Pacific II L.P. 633,956 TA Venture Investors L.P. 42,841 ITEM 4(b) PERCENT OF CLASS: PERCENTAGE ---------- Advent VII L.P. 15.66 Advent Industrial II L.P. 1.16 Advent New York L.P. 1.57 Advent Atlantic and Pacific II L.P. 3.82 TA Venture Investors L.P. .26 ITEM 4(c) NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS: (i) SOLE POWER TO VOTE OR DIRECT THE VOTE: COMMON STOCK ------------ Advent VII L.P. 2,596,756 Advent Industrial II L.P. 192,525 Advent New York L.P. 259,691 Advent Atlantic and Pacific II L.P. 633,956 TA Venture Investors L.P. 42,841 (ii) SHARED POWER TO VOTE OR DIRECT THE VOTE: N/A (iii) SOLE POWER TO DISPOSE OR DIRECT THE DISPOSITION: COMMON STOCK ------------ Advent VII L.P. 2,596,756 Advent Industrial II L.P. 192,525 Advent New York L.P. 259,691 Advent Atlantic and Pacific II L.P. 633,956 TA Venture Investors L.P. 42,841 (iv) SHARED POWER TO DISPOSE OR DIRECT THE DISPOSITION N/A 4 Page 4 ITEM 5 OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS: Not Applicable ITEM 6 OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON: Not Applicable ITEM 7 IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY: Not Applicable ITEM 8 IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP: This schedule 13G is filed pursuant to Rule 13d-1(c). For the agreement of group members to a joint filing, see below. ITEM 9 NOTICE OF DISSOLUTION OF GROUP: Not Applicable ITEM 10 CERTIFICATION: Not Applicable SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. AGREEMENT FOR JOINT FILING Advent VII L.P., Advent Industrial II L.P., Advent New York L.P., Advent Atlantic and Pacific II L.P., and TA Venture Investors Limited Partnership hereby agree that TA Associates shall file with the Securities and Exchange Commission a joint schedule 13G on behalf of the above-named parties concerning their beneficial ownership of Affiliated Managers Group, Inc. Dated: ADVENT VII L.P. By: TA Associates VII L.P., its General Partner By: TA Associates, Inc. its General Partner By: -------------------------------------------------------- Katherine S. Cromwell, Managing Director ADVENT INDUSTRIAL II L.P. By: TA Associates VI L.P., its General Partner By: TA Associates, Inc. its General Partner By: -------------------------------------------------------- Katherine S. Cromwell, Managing Director ADVENT ATLANTIC AND PACIFIC II L.P. By: TA Associates AAP II Partners L.P., its General Partner By: TA Associates, Inc. its General Partner By: -------------------------------------------------------- Katherine S. Cromwell, Managing Director ADVENT NEW YORK L.P. By: TA Associates VI L.P., its General Partner By: TA Associates, Inc. its General Partner By: -------------------------------------------------------- Katherine S. Cromwell, Managing Director TA VENTURE INVESTORS LIMITED PARTNERSHIP By: -------------------------------------------------------- Katherine S. Cromwell, General Partner