Edgar Filing: AFFILIATED MANAGERS GROUP INC

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934

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AFFILIATED MANAGERS GROUP, INC.
(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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AFFILIATED MANAGERS GROUP, INC.

600 Hale Street
Prides Crossing, Massachusetts 01965

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD ON JUNE 1, 2005

NOTICE IS HEREBY GIVEN that the 2005 Annual Meeting of Stockholders (the "Annual Meeting") of Affiliated Managers Group, Inc. (the "Company") will be held on Wednesday, June 1, 2005, at 2:00 p.m., Boston time, at the Company's offices, 600 Hale Street, Prides Crossing, Massachusetts 01965 for the following purposes:

1. To elect six directors of the Company to serve until the 2006 Annual Meeting of Stockholders and until their respective successors are duly elected and qualified.

2. To approve the material terms of the Company's Long-Term Executive Incentive Plan, as amended.

3. To ratify the selection of PricewaterhouseCoopers LLP as the Company's independent registered public accounting firm for the current fiscal year.

4. To consider and act upon any other matters that may properly be brought before the Annual Meeting and at any adjournments or postponements thereof.

Any action may be taken on the foregoing matters at the Annual Meeting on the date specified above, or on any date or dates to which, by original or later adjournment, the Annual Meeting may be adjourned, or to which the Annual Meeting may be postponed.

The Board of Directors has fixed the close of business on April 15, 2005 as the record date for determining the stockholders entitled to notice of and to vote at the Annual Meeting and at any adjournments or postponements thereof. Only stockholders of record of the Company's common stock, par value $.01 per share, at the close of business on that date will be entitled to notice of the Annual Meeting and to vote at the Annual Meeting and at any adjournments or postponements thereof.

Your vote is very important. Whether or not you plan to attend the Annual Meeting, please carefully review the enclosed proxy statement and submit your proxy, which is being solicited by the Board of Directors. If you are a stockholder of record, please complete, sign, date and mail promptly the accompanying proxy card in the postage-prepaid envelope; or, vote by telephone or over the Internet by following the instructions included with your proxy card. If your shares are held by a broker, bank or other nominee, which are referred to as shares held in "street name," please complete, sign, date and mail the voting instruction form; or, vote by telephone or over the Internet if your voting instruction form includes instructions and a toll-free telephone number or Internet website to do so. In any event, to be sure that your vote will be received in time, please cast your vote by your choice of available means at your earliest convenience.

Any proxy may be revoked by delivery of a later-dated proxy. Stockholders of record who attend the Annual Meeting may vote in person, even if they have previously submitted a completed proxy by telephone, Internet or mail. If you hold your shares in street name and would like to change your voting instructions, please check the voting instruction form provided to you by your broker, bank or other nominee.

By Order of the Board of Directors.

John Kingston, III
Secretary

Prides Crossing, Massachusetts
April 28, 2005

AFFILIATED MANAGERS GROUP, INC.

600 Hale Street
Prides Crossing, Massachusetts 01965

PROXY STATEMENT

FOR 2005 ANNUAL MEETING OF STOCKHOLDERS

To be Held on June 1, 2005

April 28, 2005

This Proxy Statement is furnished in connection with the solicitation of proxies by the Board of Directors of Affiliated Managers Group, Inc. ("AMG" or the "Company") for use at the 2005 Annual Meeting of Stockholders of the Company to be held on Wednesday, June 1, 2005 at 2:00 p.m., Boston time, at the Company's offices, 600 Hale Street, Prides Crossing, Massachusetts 01965, and at any adjournments or postponements thereof (the "Annual Meeting"). At the Annual Meeting, stockholders will be asked to elect six directors of the Company, approve the material terms of the Company's Long-Term Executive Incentive Plan, as amended, ratify the selection of PricewaterhouseCoopers LLP as the Company's independent registered public accounting firm for the current fiscal year, and to consider and act upon any other matters properly brought before them.

This Proxy Statement and the accompanying notice of Annual Meeting and proxy card are first being sent to stockholders on or about May 2, 2005. The Board of Directors has fixed the close of business on April 15, 2005 as the record date for the determination of stockholders entitled to notice of and to vote at the Annual Meeting (the "Record Date"). Only stockholders of record of the Company's common stock, par value $.01 per share, at the close of business on the Record Date will be entitled to notice of the Annual Meeting and to vote at the Annual Meeting. Holders of common stock outstanding and entitled to vote as of the close of business on the Record Date will be entitled to one vote for each share held by them. As of the Record Date, there were 33,329,832 shares of common stock outstanding and entitled to vote at the Annual Meeting.

The presence, in person or by proxy, of holders of at least a majority of the total number of shares of common stock outstanding and entitled to vote at the Annual Meeting is necessary to constitute a quorum for the transaction of business at the Annual Meeting. Both abstentions and broker non-votes (as defined below) will be counted as present in determining the presence of a quorum. A plurality of votes cast shall be sufficient for the election of directors. Approval of the material terms of the Long-Term Executive Incentive Plan, as amended, and ratification of the selection of PricewaterhouseCoopers LLP as the Company's independent registered public accounting firm for the current fiscal year require the affirmative vote of a majority of the shares of common stock present or represented at the Annual Meeting and entitled to vote on each proposal. Abstentions and broker non-votes will be disregarded in determining the "votes cast" for purposes of electing directors and will not affect the election of the nominees. Similarly, broker non-votes will not count as votes for or against approval of the material terms of the Long-Term Executive Incentive Plan or ratification of the selection of PricewaterhouseCoopers and will not affect the outcome of either vote; however, abstentions will be treated as votes against such proposals. A "broker non-vote" is a proxy from a broker or other nominee indicating that such person has not received instructions from the beneficial owner or other person entitled to vote the shares which are the subject of the proxy on a particular matter with respect to which the broker or other nominee does not have discretionary voting power.

Stockholders of the Company are requested to submit a proxy by telephone or Internet, or by completing, signing, dating and returning the accompanying proxy card or, for shares held in street name, the voting instruction form in the enclosed, postage-prepaid envelope. If you vote by telephone or the Internet, you should not return your proxy card or voting instruction form. Instead, please follow the instructions on your proxy card or voting instruction form for telephone and Internet voting. Shares

represented by a properly completed proxy received prior to the vote at the Annual Meeting and not revoked will be voted at the Annual Meeting as directed on the proxy. If a properly executed proxy is submitted and no instructions are given, the proxy will be voted FOR the election of each of the nominees for director, FOR approval of the material terms of the Company's Long-Term Executive Incentive Plan, as amended, and FOR ratification of the selection of PricewaterhouseCoopers LLP as the Company's independent registered accounting firm for the current fiscal year. If other matters are presented, proxies will be voted in accordance with the discretion of the proxy holders on such other matters.

A stockholder of record may revoke a proxy at any time before it has been exercised by filing a written revocation with the Secretary of the Company at the address of the Company set forth above; by filing a duly executed proxy bearing a later date; or by appearing in person and voting by ballot at the Annual Meeting. A stockholder of record who voted by telephone or the Internet may also change his or her vote with a timely and valid later telephone or Internet vote, as the case may be. Any stockholder of record as of the Record Date attending the Annual Meeting may vote in person whether or not a proxy has previously been given, but the presence (without further action) of a stockholder at the Annual Meeting will not constitute revocation of a previously given proxy.

A stockholder whose shares are held in street name may change previously delivered voting instructions by following the procedure set forth in the voting instruction form provided by the broker, bank or other nominee. A stockholder whose shares are held in street name may vote in person at the Annual Meeting, upon presenting picture identification, an account statement or a letter from the record holder indicating that the stockholder owned the shares as of the record date, and a proxy from the record holder issued in the stockholder's name.

The Company's 2004 Annual Report, including audited financial statements for the fiscal year ended December 31, 2004, is being mailed to stockholders concurrently with this Proxy Statement. The Annual Report, however, is not part of the proxy solicitation materials.

PROPOSAL 1: ELECTION OF DIRECTORS

Introduction

The Board of Directors of the Company currently consists of seven members. At the Annual Meeting, six directors will be elected to serve until the 2006 Annual Meeting of Stockholders and until their respective successors are duly elected and qualified, while Mr. Stephen J. Lockwood will not stand for re-election. The Board of Directors has nominated Messrs. William J. Nutt, Sean M. Healey, Richard E. Floor, Harold J. Meyerman and Robert C. Puff, Jr., and Dr. Rita M. Rodriguez (collectively, the "Nominees") to serve as directors. Each of the Nominees is currently serving as a director of the Company. The Board of Directors anticipates that each of the Nominees will, if elected, serve as a director. However, if any person nominated by the Board of Directors is unable to accept election, the proxies will be voted for the election of such other person or persons as the Board of Directors may recommend.

RECOMMENDATION OF THE BOARD OF DIRECTORS

THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT THE STOCKHOLDERS VOTE FOR THE ELECTION OF EACH OF THE NOMINEES.

Information Regarding the Nominees

The name, age (as of April 1, 2005) and a description of the business experience, principal occupation and past employment during at least the last five years of each of the Nominees is set forth below.

Name		Age
Richard E. Floor		64
Sean M. Healey		43
Harold J. Meyerman(1)(2)(3)		66
William J. Nutt		60
Robert C. Puff, Jr.(2)(3)		59
Rita M. Rodriguez(1)(3)		62

(1): Member of the Nominating and Governance Committee.
(2): Member of the Compensation Committee.
(3): Member of the Audit Committee.

Richard E. Floor has been a director of the Company since its formation in December 1993. Mr. Floor has been a partner at the law firm of Goodwin Procter LLP since 1975. Mr. Floor is also a director of New America High Income Fund, a closed-end investment company.

Sean M. Healey joined the Company in 1995 and is the Company's President and Chief Executive Officer. From 1995 to 1999, Mr. Healey served as Executive Vice President, and was named President and Chief Operating Officer in 1999. He has been a director of the Company since May 2001. Prior to joining AMG, Mr. Healey was a Vice President in the Mergers and Acquisitions Department at Goldman, Sachs & Co. focusing on financial institutions. Mr. Healey also serves as a Trustee of the Peabody Essex Museum and Shore Country Day School. Mr. Healey received a J.D. from Harvard Law School, an M.A. from University College, Dublin and an A.B. from Harvard College.

Harold J. Meyerman has been a director of the Company since July 1999. Mr. Meyerman retired as a Managing Director of the Global Financial Institutions and Trade Group of The Chase Manhattan Bank ("Chase") in December 1998. His responsibilities at Chase included overseeing the asset management businesses. Before joining Chase, Mr. Meyerman was President and Chief Executive Officer of First

Interstate Bank, Ltd. Mr. Meyerman also serves on the Boards of Directors of the Huntington Medical Research Institutes, the Genetics and IVF Institute, as Chairman of Exporters Insurance, Inc. and as Chairman of Ansett Aircraft Spares and Services, Inc., a private corporation located in Sylmar, California. Mr. Meyerman also serves on the Board of Trustees of the Palm Springs Desert Museum.

William J. Nutt founded the Company in December 1993 and is the Company's Chairman. From 1993 to December 2004, Mr. Nutt served as Chief Executive Officer of the Company. Prior to founding AMG, Mr. Nutt was President and Chief Operating Officer of The Boston Company and was responsible for its institutional money management business, mutual fund administration, distribution and custody business and master trustee and custodian business. As Chairman and Chief Executive Officer of The Boston Company's principal subsidiary, Boston Safe Deposit and Trust Company, Mr. Nutt was also responsible for its personal banking and trust business. He also serves as an Overseer of the New England Aquarium and on the Advisory Council of the Trustees of Reservations. Mr. Nutt is also a Commissioner of the Massachusetts Aeronautical Commission. Mr. Nutt received a J.D. from the University of Pennsylvania and a B.A. from Grove City College.

Robert C. Puff, Jr. has been a director of the Company since April 2004. Mr. Puff served as President of American Century Investment Management, Inc. from 1997 to 2001 and as Chief Investment Officer from 1993 to 2001. Mr. Puff served in a variety of other roles at American Century Investments after joining the company in 1983, including as a member of the company's Executive Committee and Board of Directors. Mr. Puff also serves as the Vice Chairman and a director of Sands Capital Management, Inc., a private investment advisory firm.

Rita M. Rodriguez has been a director of the Company since January 2000. Dr. Rodriguez has been a Fellow and Senior Fellow at the Woodstock Theological Center at Georgetown University since September 2002, and from March 1999 to September 2002 served as an international finance consultant. Dr. Rodriguez was formerly a full-time member of the Board of Directors of the Export-Import Bank of the United States from 1982 to March 1999. Prior to joining the Export-Import Bank Board, Dr. Rodriguez was on the finance faculties at the University of Illinois at Chicago and at Harvard Business School. In addition, Dr. Rodriguez has authored numerous journal articles and books on the subject of international finance. Dr. Rodriguez also serves on the Board of Directors and the Audit Committee of ENSCO International Incorporated, an international offshore contract drilling company, and on the Board of Directors of the Academy for Educational Development and the Private Export Funding Corporation.

Meetings of the Board of Directors and Committees and Corporate Governance Matters

During 2004, the Board of Directors met seven times. Each member of the Board of Directors attended at least 75% of the aggregate of (i) the total number of meetings of the Board of Directors and (ii) the total number of meetings of all standing committees of the Board of Directors on which such director served (during the period such director served on the Board of Directors or any committee thereof). The Company does not have a formal policy regarding director attendance at an annual meeting of stockholders; Messrs. Floor, Healey, Nutt and Puff were in attendance at the 2004 Annual Meeting of Stockholders.

At least annually, the Board of Directors evaluates all relationships between the Company and each director in light of the relevant facts and circumstances to determine whether a material relationship exists that might signal a potential conflict of interest. After its most recent evaluation of director independence, the Board of Directors determined that five of its seven current directors, Messrs. Floor, Lockwood, Meyerman, Puff and Dr. Rodriguez, have no material relationship with the Company that might present a conflict of interest and are "independent" for purposes of the listing standards of the New York Stock Exchange (the "NYSE"). The Board of Directors based these determinations primarily on a review of the responses of the nominees to questions regarding employment and compensation history, affiliations and family and other relationships and on discussions with them.

Of the five independent directors, only one has a direct or indirect business relationship with the Company. Mr. Floor is the sole shareholder of Richard E. Floor, P.C., which is a partner in Goodwin Procter LLP. During 2004, the Company retained Goodwin Procter LLP for certain legal services. In each of the past three fiscal years, the amount that the Company paid to Goodwin Procter LLP was less than 2% of Goodwin Procter LLP's consolidated gross revenues. Furthermore, the Board of Directors determined that these payments were not otherwise material to Goodwin Procter LLP or the Company and did not constitute a material benefit to Mr. Floor. The Board of Directors determined that Mr. Floor's relationship to the Company through Goodwin Procter LLP does not impair his independence as a director.

The standing committees of the Board of Directors are the Audit Committee, the Compensation Committee and the Nominating and Governance Committee. Each such committee acts pursuant to a written charter adopted by the respective committee. A description of each committee is set forth below.

Audit Committee. The Audit Committee currently consists of Dr. Rodriguez and Messrs. Meyerman and Puff. The Board of Directors has determined that each member of its Audit Committee is "independent" for purposes of the NYSE listing standards, including those applicable to audit committees, and each member of the Audit Committee is an audit committee financial expert, as defined by the Securities and Exchange Commission (the "SEC"). The amended and restated charter of the Audit Committee is filed as an appendix to this Proxy Statement. The Audit Committee met five times during 2004.

Compensation Committee. The Compensation Committee, which currently consists of Messrs. Lockwood, Meyerman and Puff, is responsible for overseeing the Company's general compensation policies and establishing and reviewing the compensation plans applicable to the Company's executive officers. The Compensation Committee met seven times during 2004.

Nominating and Governance Committee. The Nominating and Governance Committee, which currently consists of Messrs. Meyerman and Lockwood and Dr. Rodriguez, is primarily responsible for recommending criteria to the Board of Directors for Board of Directors' and committee membership, identifying and evaluating director candidates, overseeing the evaluation of the Board of Directors and its committees, and maintaining the Company's corporate governance guidelines. The Nominating and Governance Committee may solicit director candidate recommendations from a number of sources, including non-management directors, executive officers and third-party search firms. The Nominating and Governance Committee will consider for nomination any director candidates, including director candidates recommended by stockholders of the Company, who are deemed qualified by the Nominating and Governance Committee in light of the qualifications and criteria for Board of Directors' membership described below, or such other criteria as approved by the Board of Directors or a committee thereof from time to time. Stockholder recommendations must be submitted to the Nominating and Governance Committee in accordance with the substantive and procedural requirements set forth in the Company's By-laws, including as discussed below under the caption "Other Matters," and any procedures established from time to time by the Nominating and Governance Committee. The Nominating and Governance Committee does not have a specific policy regarding the consideration of stockholder recommendations for director candidates and evaluates recommendations without regard to their source. The Nominating and Governance Committee met four times during 2004.

When considering candidates for directorship, the Nominating and Governance Committee takes into account a number of factors, including the following qualifications: the nominee shall have the highest personal and professional integrity, have demonstrated exceptional ability and judgment and the attributes necessary to (in conjunction with the other members of the Board of Directors) best serve the long-term interests of the Company and its stockholders. In addition, the Nominating and Governance Committee reviews from time to time the skills and characteristics necessary and appropriate for directors in light of the then current composition of the Board of Directors, including such factors as business experience,

diversity and knowledge of the financial services industry in general and the asset management industry in particular. The Nominating and Governance Committee will review at least annually the Company's corporate governance guidelines to ensure that the Company continues to meet best corporate governance practice standards.

Executive Sessions of Non-management Directors. Non-management directors of the Company meet in regularly scheduled executive sessions. Since the charter of the Nominating and Governance Committee provides that the Chairperson of such committee shall serve as the lead director, Mr. Meyerman serves as the lead director calling and chairing the executive sessions and in communicating with Mr. Nutt, Chairman of the Board of Directors, and Mr. Healey, President and Chief Executive Officer.

Shareholder Communications with Non-management Directors or the Board of Directors. An interested party may communicate directly with Mr. Meyerman, the Chairperson of the Nominating and Governance Committee, by sending a confidential memorandum addressed to his attention at the Company at 600 Hale Street, Prides Crossing, Massachusetts 01965. Any communications to the full Board of Directors may be directed to John Kingston, III, Senior Vice President, General Counsel and Secretary of the Company, who would, in his discretion, discuss the communications with the Board of Directors at a regular meeting of the Board of Directors.

Availability of Corporate Governance Documents. The Company maintains a corporate governance section on its web site that includes, among other items, the Board of Directors' Corporate Governance Guidelines; the charters for the Audit, Compensation and Nominating and Governance Committees; the Code of Business Conduct and Ethics applicable to all directors, officers and employees; and the Code of Ethics applicable to the Company's chief executive officer, chief financial officer and other senior financial officers. This information is available on the investor information section of the Company's web site, www.amg.com, under "corporate governance," but is not incorporated by reference into this Proxy Statement. In addition, copies of these documents will be provided without charge to any person upon request of such person to John Kingston, III, Senior Vice President, General Counsel and Secretary, Affiliated Managers Group, Inc., 600 Hale Street, Prides Crossing, Massachusetts 01965.

Compensation of Directors

Directors of the Company who are also employees receive no additional compensation for their service as directors. Each of Messrs. Floor, Lockwood, Meyerman, Puff and Dr. Rodriguez receives an annual fee of $40,000 for his or her service as a director, as well as a quarterly meeting fee of $2,500 (for in-person attendance) and $1,250 (for telephonic attendance). In addition, directors receive an annual fee of $10,000 for their service as a member of each of the Audit Committee, Compensation Committee or Nominating and Governance Committee, as the case may be, with the Chairperson of the Audit Committee receiving an additional annual fee of $15,000, and the Chairperson of each of the Compensation Committee and Nominating and Governance Committee receiving an additional annual fee of $5,000. In addition, all directors of the Company are reimbursed for travel expenses incurred in attending meetings of the Board of Directors and its committees.

For their services as directors, non-employee directors are also eligible to receive shares of restricted common stock and options to purchase shares of common stock under the Company's 1997 Stock Option and Incentive Plan, as amended and restated (the "1997 Option Plan"), and the Company's 2002 Stock

Option and Incentive Plan, as amended and restated (the "2002 Option Plan"). Each of the non-employee directors received the following option awards during 2004:

Grant Date		Number of Shares Underlying Options		Exercise Price			Vesting		Expiration Date
July 27, 2004		5,625		$	45.27		4 annual installments beginning December 31, 2004		July 27, 2014
November 30, 2004		5,625		$	63.38		4 annual installments beginning December 31, 2005		November 30, 2014

Information Regarding Executive Officers of the Company

The name, age (as of April 1, 2005) and positions of each of the executive officers of the Company, as well as a description of their respective business experience and past employment during at least the last five years, is set forth below:

Name	Age	Position
William J. Nutt	60	Chairman of the Board of Directors
Sean M. Healey	43	President and Chief Executive Officer
Seth W. Brennan	34	Executive Vice President
Darrell W. Crate	38	Executive Vice President, Chief Financial Officer and Treasurer
Nathaniel Dalton	38	Executive Vice President
John Kingston, III	39	Senior Vice President, General Counsel and Secretary

For the biographical information of Messrs. Nutt and Healey, see "—Information Regarding the Nominees" above.

Seth W. Brennan joined the Company in 1995 and in 2001 became an Executive Vice President, with responsibility for coordinating the Company's new investment activities. Prior to joining AMG, Mr. Brennan was in the Global Insurance Investment Banking Group at Morgan Stanley & Co. Incorporated and in the Financial Institutions Group at Wasserstein, Perella & Co. Mr. Brennan received a B.A. from Hamilton College.

Darrell W. Crate joined the Company in 1998 as a Senior Vice President and Chief Financial Officer and in 2001 became Executive Vice President and Chief Financial Officer. He also serves as the Company's Treasurer. Prior to joining AMG, Mr. Crate was a Managing Director in the Financial Institutions Group of Chase Manhattan Corporation focusing exclusively on investment management firms. Mr. Crate received an M.B.A. from Columbia Business School and a B.A. from Bates College.

Nathaniel Dalton joined the Company in 1996 as a Senior Vice President and General Counsel and in 2001 became Executive Vice President, with responsibility for AMG's Affiliate Development efforts. He served as General Counsel and as the Company's Secretary until June 2002. Prior to joining AMG, Mr. Dalton was an attorney at Goodwin Procter LLP, focusing on mergers and acquisitions, including those in the asset management industry. Mr. Dalton received a J.D. from Boston University School of Law and a B.A. from the University of Pennsylvania.

John Kingston, III joined the Company in 1999 as Vice President and in 2002 became Senior Vice President and General Counsel. He also serves as Secretary of the Company. Prior to joining the Company, Mr. Kingston served as a senior counsel to Miller Anderson & Sherrerd, LLP, a division of Morgan Stanley Investment Management, and was an attorney at Ropes & Gray LLP, focusing on corporate and securities laws issues, with a particular focus on the investment management industry. Mr. Kingston received a J.D. from Harvard Law School, and a B.S. and B.A. from the University of Pennsylvania.

Executive Compensation

Summary Compensation Table. The following table sets forth information regarding the compensation earned during the indicated periods by the Company's Chief Executive Officer and the Company's four other most highly compensated executive officers during the fiscal years indicated (collectively, the "Named Executive Officers"). The number of shares of common stock subject to options and the option exercise prices have been adjusted to give effect to the three-for-two stock split declared by the Board of Directors in January 2004 and effected by payment of a stock dividend in March 2004 in the form of one half share of common stock for every one outstanding share of common stock as of the specified record date.

		Annual Compensation				Long-Term Compensation Awards
Name and Principal Position	Year	Salary($)	Bonus (1)($)	Other Annual Compensation ($)		Securities Underlying Options (#)	All Other Compensation (2)($)
William J. Nutt Chairman	2004 2003 2002	750,000 650,000 625,000	2,700,000 1,900,000 2,200,000	168,454 40,894 16,177	(3) (4) (5)	275,000 240,000 172,500	38,208 48,442 145,475
Sean M. Healey President and Chief Executive Officer (†)	2004 2003 2002	650,000 550,000 500,000	2,700,000 1,700,000 2,100,000	66,056 21,379 16,252	(3) (4) (5)	265,000 217,500 157,500	25,200 24,700 94,082
Seth W. Brennan Executive Vice President	2004 2003 2002	500,000 400,000 325,000	1,950,000 1,300,000 1,500,000	31,445 18,093 18,383	(3) (4) (5)	230,000 165,000 142,500	25,200 24,700 63,290
Darrell W. Crate Executive Vice President, Chief Financial Officer and Treasurer	2004 2003 2002	500,000 400,000 325,000	1,950,000 1,300,000 1,500,000	29,253 15,746 16,185	(3) (4) (5)	230,000 195,000 142,500	25,200 24,700 72,220
Nathaniel Dalton Executive Vice President	2004 2003 2002	500,000 400,000 325,000	1,950,000 1,300,000 1,500,000	36,290 15,882 19,077	(3) (4) (5)	230,000 195,000 142,500	25,200 24,700 72,591

†: Mr. Healey assumed the position of Chief Executive Officer on January 1, 2005; prior to that time, Mr. Nutt served as the Company's Chief Executive Officer.
(1): Represents compensation paid by the Company under the Long-Term Executive Incentive Plan, as amended (the "Long-Term Incentive Plan"), the material terms of which are summarized in Proposal 2 and a copy of which is attached to this Proxy Statement as Appendix B.
(2): For fiscal 2004, such compensation consisted of (i) contributions by the Company under its 401(k) Profit Sharing Plan in the amount of $20,500 on behalf of each Named Executive Officer; (ii) the dollar value of insurance premiums paid by the Company with respect to term life and long-term disability insurance policies in the amount of $4,700 on behalf of each Named Executive Officer; and (iii) profit distributions on compensation paid under the Long-Term Incentive Plan in the amount of $13,008 to Mr. Nutt.
(3): Includes tax payments made in connection with the provision of certain financial service, health care and other benefits in the amounts of $70,323, $34,823, $12,894, $11,934, and $14,860 for Messrs. Nutt, Healey, Brennan, Crate and Dalton, respectively, and total financial service benefits of $88,925 for Mr. Nutt.

(4): Includes tax payments made in connection with the provision of certain financial service benefits in the amounts of $16,745, $8,754, $7,409, $6,447, and $6,503 for Messrs. Nutt, Healey, Brennan, Crate and Dalton, respectively.
(5): Includes tax payments made in connection with the provision of certain financial service benefits in the amounts of $7,193, $7,226, $8,174, $7,196 and $8,482 for Messrs. Nutt, Healey, Brennan, Crate and Dalton, respectively.

Option Grants. The following table sets forth information regarding the option grants made during 2004 to the Named Executive Officers. The number of shares of common stock subject to options and the option exercise prices have been adjusted to give effect to the three-for-two stock split declared by the Board of Directors in January 2004 and effected by payment of a stock dividend in March 2004 in the form of one half share of common stock for every one outstanding share of common stock as of the specified record date.

Option Grants in 2004

						Potential Realizable Value at Assumed Annual Rates of Stock Price Appreciation For Option Term(1)
	Individual Grants
	Number of Securities Underlying Options		Percent of Total Options Granted to Employees
				Exercise or Base Price ($/Share)	Expiration Date
				Exercise or Base Price ($/Share)	Expiration Date	5%($)	10%($)
William J. Nutt	137,500 137,500	(2) (3)	7.12% 7.12%	45.27 63.38	7/27/14 11/30/14	3,914,633 5,480,659	9,920,449 13,889,067
Sean M. Healey	132,500 132,500	(2) (3)	6.86% 6.86%	45.27 63.38	7/27/14 11/30/14	3,772,283 5,281,363	9,559,706 13,384,010
Seth W. Brennan	115,000 115,000	(2) (3)	5.95% 5.95%	45.27 63.38	7/27/14 11/30/14	3,274,057 4,583,824	8,297,103 11,616,311
Darrell W. Crate	115,000 115,000	(2) (3)	5.95% 5.95%	45.27 63.38	7/27/14 11/30/14	3,274,057 4,583,824	8,297,103 11,616,311
Nathaniel Dalton	115,000 115,000	(2) (3)	5.95% 5.95%	45.27 63.38	7/27/14 11/30/14	3,274,057 4,583,824	8,297,103 11,616,311

(1): Amounts represent hypothetical gains that could be achieved for the respective options if exercised at the end of the respective option term. These gains are based upon assumed rates of stock appreciation set by the SEC of 5% and 10%, compounded annually, from the date the respective options were granted and do not reflect the Company's estimate of future stock price growth, if any. Actual gains, if any, are dependent, in part, on the performance of the common stock. There can be no assurance that the amounts reflected will be achieved.
(2): The options are immediately exercisable but the shares issuable on exercise of the option are subject to restrictions on transfer. The restrictions lapse in five installments of 18.75%, 25%, 25%, 25% and 6.25% on the last day of each calendar year beginning in the year of the date of grant, provided that the option holder remains employed by the Company. In the event the option holder ceases to be employed by the Company before the restrictions lapse on all shares, shares as to which the restrictions have not lapsed will remain subject to restrictions until July 2011.
(3): The options are immediately exercisable but the shares issuable on exercise of the option are subject to restrictions on transfer. The restrictions lapse in six installments of 10%, 10%, 10%, 23%, 23% and 24% on the last day of each calendar year beginning in the year following the date of grant, provided that the option holder remains employed by the Company. In the event the option holder ceases to be employed by the Company before the restrictions lapse on all shares, shares as to which the restrictions have not lapsed will remain subject to restrictions until December 2011.

Aggregated Option Exercises in Last Fiscal Year and Year-End Option Values. The following table sets forth information regarding the shares of common stock acquired on exercise of stock options during 2004, the number of unexercised options at the end of 2004 and the value of stock options held at the end of 2004 by each Named Executive Officer.

The "Value Realized" column reflects the difference between the market price on the date of exercise and the market price on the date of grant (which equals the option exercise price) and assumes the sale of all shares issued upon exercise of the option. Accordingly, the "Value Realized" amount does not necessarily reflect the actual amount received by the Named Executive Officer since the market price on the actual date of sale may be higher or lower than the market price on the date of exercise of the option and the total number of shares sold, if any, may be less than the number of shares issued upon exercise of the option.

The table below sets forth information regarding the number of securities underlying options and the value of such securities at year-end which are free of transfer restrictions and which are subject to transfer restrictions, as the case may be.

2004 Year-End Option Values

					Year-end(1)($)
			Number of Securities Underlying Options at Year-End		Year-end(1)($)
			Number of Securities Underlying Options at Year-End		Value of Exercisable In-the-Money Options which are Free of Transfer Restrictions	Value of Exercisable In-the-Money Options which are Subject to Transfer Restrictions
	Shares Acquired on Exercise (#)	Value Realized ($)	which are Free of Transfer Restrictions	which are Subject to Transfer Restrictions
William J. Nutt	5,000	246,400	1,235,283	496,719	48,587,972	9,696,442
Sean M. Healey	119,421	4,999,525	857,117	464,219	30,690,783	8,967,634
Seth W. Brennan	68,368	2,454,791	466,632	386,562	14,486,971	7,429,767
Darrell W. Crate	54,828	2,009,995	568,609	409,063	18,089,366	7,956,157
Nathaniel Dalton	54,771	2,026,790	636,353	409,063	21,373,360	7,956,157

(1): Based on $67.74 per share, the reported closing price of the common stock on the NYSE on December 31, 2004.

Equity Compensation Plan Information

The Company has two equity compensation plans. The 1997 Option Plan authorizes the Company to grant stock options to employees, directors and other key persons. In 2002, stockholders approved an amendment to increase to 7,875,000 the shares of common stock authorized for issuance under this plan. In 2002, the Board of Directors established the 2002 Option Plan, under which the Company is authorized to grant non-qualified stock options and certain other awards to employees and directors. The 2002 Option Plan requires that the majority of grants under the plan in any three-year period must be issued to employees who are not executive officers or directors of the Company. The 2002 Option Plan has not been approved by the Company's stockholders. There are 3,375,000 shares of common stock authorized for issuance under this plan.

The plans are administered by the Compensation Committee of the Board of Directors. The exercise price of stock options is the fair market value of the common stock on the date of grant, or such other amount as the Compensation Committee may determine in accordance with the respective plan. The shares issuable on exercise of the options are subject to restrictions on transfer that lapse in installments according to specified schedules, provided that the respective recipient remains employed by the Company. In the event the recipient ceases to be employed by the Company, such restrictions will remain outstanding

until December 2010 or seven years after the date of grant, whichever is later. The stock options generally expire seven to ten years after the grant date.

The following table sets forth information regarding the securities authorized for issuance under the Company's equity compensation plans as of December 31, 2004:

	Number of securities to be issued upon exercise of outstanding options, warrants and rights	Weighted-average exercise price of outstanding options, warrants and rights	Number of securities remaining available for future issuance under compensation plans (excluding securities reflected in column (a))
	(a)	(b)	(c)
Equity compensation plans approved by stockholders(1)	5,732,867	34.72	51,040
Equity compensation plans not approved by stockholders(2)	3,061,889	48.13	151,178
Total(3)	8,794,756	39.39	202,218

(1): Consists of the 1997 Option Plan.
(2): Consists of the 2002 Option Plan.
(3): The (i) number of shares of common stock subject to outstanding options, warrants and rights, (ii) weighted-average exercise prices and (iii) number of securities remaining available for future issuance have been adjusted to give effect to the three-for-two stock split declared by the Board of Directors in January 2004 and effected by payment of a stock dividend in March 2004 in the form of one half share of common stock for every one outstanding share of common stock as of the specified record date.

Stock Performance Graph

The following graph provides a comparison of cumulative total stockholder return for the period from January 1, 2000 through December 31, 2004, among the Company, the S&P 500 Stock Index, an asset management industry composite index constructed and used by the Company. The Peer Group Index is comprised of the following entities: BlackRock, Inc., Eaton Vance Corp., Federated Investors, Inc., Franklin Resources, Inc., Gabelli Asset Management Inc., Janus Capital Group Inc., Nuveen Investments, Inc., T. Rowe Price Group, Inc., Waddell & Reed Financial, Inc. and W.P. Stewart & Co., Ltd.

COMPARISON OF CUMULATIVE TOTAL RETURN*
AMONG THE COMPANY, THE S&P 500 INDEX,
AND THE PEER GROUP INDEX

*: The stock performance graph assumes an investment of $100 in the common stock of the Company (at the per share closing price of the Company's common stock on December 31, 1999) and each of the indices described above, and the reinvestment of any dividends. The historical information set forth above is not necessarily indicative of future performance.

COMPENSATION COMMITTEE REPORT ON
EXECUTIVE COMPENSATION

The Compensation Committee

The Compensation Committee currently consists of Messrs. Lockwood, Meyerman and Puff with Mr. Lockwood serving as the Chairperson of the Compensation Committee. The Compensation Committee is responsible for overseeing the Company's general compensation policies and establishing and reviewing the compensation plans applicable to the Company's executive officers. In that capacity, the Compensation Committee also administers the Company's stock option and incentive plans, as well as the Long-Term Incentive Plan.

Compensation Policies

The Compensation Committee structures its policies and programs to further two basic philosophies: first, that executive compensation should be closely aligned with increases in stockholder value as measured by growth in Cash earnings per share (as discussed below); and second, that executive compensation should be designed to retain the services of key members of senior management of the Company. In keeping with these two philosophies, the Compensation Committee closely monitors the allocation of the Company's executives' compensation among three primary components: base salary, bonus and equity-based compensation awards, so as to maintain an appropriate balance between fixed compensation and performance-based compensation. In awarding any performance-based compensation, the Committee also considers the mix and timing of such compensation to achieve short and long-term incentive objectives. Throughout these processes, the Compensation Committee strives to create the optimum level of incentives to ensure that key executives remain with the Company and manage the Company's affairs with the goal of increasing value to stockholders.

Base Salary

In determining base salary levels for the Company's executive officers, the Compensation Committee annually reviews the amounts of base compensation being paid to executive officers of other companies in the asset management industry, and in particular those comprising the Peer Group Index described above. The Compensation Committee intends that the base salary levels of the Company's executive officers be somewhat below the average for executives in similar positions in comparable public companies in the asset management industry. The Compensation Committee believes it is appropriate to target a base salary level that reflects the Compensation Committee's belief that total compensation should be principally focused on performance-based compensation. Based on the Compensation Committee's philosophy and the factors stated above, the Compensation Committee determined to approve 2005 base salaries as follows: Mr. Healey, $750,000, Mr. Nutt, $650,000 and each of Messrs. Brennan, Crate and Dalton, $500,000.

Performance-based Compensation

In determining the performance-based compensation levels for the Company's executive officers, the Compensation Committee considers the Company's Cash Net Income per share (or "Cash earnings") (as discussed in the Company's Annual Report for the fiscal year ended December 31, 2004) to be the principal performance benchmark for the Company and therefore uses Cash earnings as a measure to align executive compensation with stockholder value. Under the terms of the Long-Term Incentive Plan, executives covered under the Long-Term Incentive Plan are eligible to receive incentive compensation for any fiscal year in which the Company achieves certain targets of Cash earnings, which are established by the Compensation Committee within the first 90 days of the fiscal year. The Company's Cash earnings for 2004 exceeded the initial Cash earnings target established by the Compensation Committee for the year,

resulting in the payment of performance-based compensation pursuant to the pre-established formula under the Long-Term Incentive Plan.

In addition to Cash earnings, the Compensation Committee believes it is important to consider certain additional Company and individual performance factors, in total, in determining the appropriate level of overall compensation for the Company's executive officers. Where appropriate, the Compensation Committee considers the performance of the Company's common stock, the performance of the Company (with respect to a number of financial measures) relative to other companies in its peer group and the performance of the Company relative to the financial markets generally, along with a broad assessment of qualitative management performance on both an individual and collective basis. The Compensation Committee's determinations regarding the amount of performance-based compensation to be paid to each executive officer is set forth in the Summary Compensation Table.

Equity-Based Incentive Compensation Awards

In addition to performance-based compensation that rewards executives for positive short-term performance, the Compensation Committee believes that equity-based compensation awards provide appropriate long-term incentives to executive officers that are aligned more closely with the achievement of enhanced stockholder value. The Compensation Committee grants equity-based incentive compensation awards on the basis of the Company's historical performance and the individual executive officer's contributions to that performance, as well as the expected contribution of the executive officer to the Company's future performance. In granting awards, the Compensation Committee considers potential equity-based awards in relation to the compensation to be paid in any particular year to an executive officer.

While the Compensation Committee has generally employed stock options as the principal form of equity-based incentive compensation, the Committee currently intends to employ long-term incentive award arrangements in which the value of long-term incentive awards for executive officers may be directly tied to the value of the Company's common stock. These awards will be subject to vesting and forfeiture provisions, and will in most cases be similar to restricted stock. In connection with its expected use of this form of equity-based incentive compensation during 2005, the Compensation Committee also intends to adopt stock ownership guidelines that would require executive officers to maintain a certain level of equity ownership in the Company. The Compensation Committee believes that these changes advance the Committee's employee retention and incentive objectives and align the interests of executive officers with those of our stockholders.

As noted, the Compensation Committee has historically employed stock options as the principal form of equity-based incentive compensation. In making its stock option grant determinations in 2004, the Compensation Committee evaluated the Company's performance (both in terms of Cash earnings growth and increase in stockholder value), individual executive officer contributions to that performance, expected executive officer contributions to the Company's future performance, the levels of salary and performance-based compensation and the equity ownership of executive officers. Grants of stock options to executive officers are described in the "Option Grants in 2004" table.

Compensation of the Chief Executive Officer

Mr. Healey serves as President and Chief Executive Officer of the Company. Until December 31, 2004, Mr. Nutt served as Chief Executive Officer, and continues to serve as Chairman. In determining the annual and performance-based compensation levels for the Company's Chief Executive Officer, the Compensation Committee applies the same principles and methods applied to its other executive officers. On that basis, and based upon its assessment of Mr. Nutt's contributions relative to other senior managers of the Company in 2004, the Compensation Committee determined Mr. Nutt's overall compensation in 2004 to be appropriate.

Deductibility of Compensation

Section 162(m) of the Internal Revenue Code of 1986, as amended, places a limit on the tax deduction for compensation in excess of $1 million paid to any "covered employee" of a publicly held corporation (generally the corporation's chief executive officer and its next four most highly compensated executive officers in the year that the compensation is paid). Under the Long-Term Incentive Plan, performance compensation paid thereunder to such covered employees is intended to be deductible by the Company. In implementing its compensation policies during fiscal 2004, the Compensation Committee considered, among other things, the Long-Term Incentive Plan and the opportunities it affords to preserve the tax deductibility of compensation to executive officers. The Compensation Committee's policy with respect to Section 162(m) is to make reasonable efforts to ensure that compensation is deductible to the extent permitted while providing the Company's executive officers with appropriate rewards for their performance.

STEPHEN J. LOCKWOOD
HAROLD J. MEYERMAN
ROBERT C. PUFF, JR.

CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

During 2004, the Company retained Goodwin Procter LLP for certain legal services. Richard E. Floor, a director of the Company, is the sole shareholder of Richard E. Floor, P.C., which is a partner in Goodwin Procter LLP. In each of the past three fiscal years, the amount that the Company paid to Goodwin Procter LLP was less than 2% of Goodwin Procter LLP's consolidated gross revenues and the Board of Directors has determined that these payments were not otherwise material to Goodwin Procter LLP or the Company and did not constitute a material benefit to Mr. Floor.

PROPOSAL 2: APPROVAL OF THE MATERIAL TERMS OF THE COMPANY'S
LONG-TERM EXECUTIVE INCENTIVE PLAN

With limited exceptions, a publicly-held corporation may not claim a federal income tax deduction for compensation for any year in excess of $1 million paid to the corporation's chief executive officer or any of its other four most highly paid named executive officers. An exception to this deduction limitation applies in the case of certain qualifying performance-based compensation paid pursuant to a plan, the material terms of which are periodically approved by the corporation's stockholders. Our stockholders approved the Long-Term Executive Incentive Plan, or Plan, at our Annual Meeting in 2000 and approved amendments to the Plan at our Annual Meeting in 2002. This year, we are making some changes to the Plan to align the performance measure more closely with the way that we report our financial results to the public and we are asking stockholders to approve the material terms of the Plan, as amended. The material terms of the Plan are summarized below.

Eligibility for awards under the Plan is limited to those executive officers of the Company who are selected by the Compensation Committee. Within the first 90 days of each fiscal year of the Company, the Compensation Committee establishes the formula by which an incentive pool will be determined for the year by reference to growth in the Company's pre-tax Cash net income. The Compensation Committee also fixes for each participant the percentage share of the pool that the participant can earn and a target amount of base Cash earnings per share that must be achieved for the participant to be paid an award. Pre-tax Cash net income for a year is defined as Cash net income (that is, the Cash earnings that we report when we disclose our financial results) plus all items of income tax expense that we deducted to arrive at cash net income. We have amended the definition of Cash net income to align it to what we report publicly; similarly, we have revised the definition of base Cash earnings per share to be consistent with our publicly reported Cash earnings per share, using adjusted diluted average shares outstanding. Awards are paid only if the Compensation Committee certifies performance results. In awarding any performance-based compensation, the Committee also considers the mix and timing of such compensation to achieve short and long-term incentive objectives. Earned awards may be decreased but not increased by the Compensation Committee. In addition, we have amended the Plan such that no participant's award may exceed 5% of pre-tax Cash net income.

The Company believes that performance-based compensation that is closely aligned with growth in Cash earnings per share will continue to retain the services of key members of senior management of the Company. In order to continue to make performance-based awards under the Plan, we need your approval of the material terms described above.

RECOMMENDATION OF THE BOARD OF DIRECTORS

THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT THE STOCKHOLDERS VOTE FOR APPROVAL OF THE MATERIAL TERMS OF THE LONG-TERM EXECUTIVE INCENTIVE PLAN.

PROPOSAL 3: RATIFICATION OF THE
SELECTION OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Audit Committee of the Board of Directors has selected PricewaterhouseCoopers LLP as the Company's independent registered public accounting firm for the current fiscal year, subject to ratification by the company's stockholders at the Annual Meeting. PricewaterhouseCoopers has acted as the Company's independent registered public accounting firm since the Company's inception. The Company has been advised by PricewaterhouseCoopers that it is a registered public accounting firm with the Public Company Accounting Oversight Board (the "PCAOB") and complies with the auditing, quality control, and independence standards and rules of the PCAOB and the Securities and Exchange Commission. A representative of PricewaterhouseCoopers LLP is expected to be present at the Annual Meeting to respond to appropriate questions and to make a statement if he or she so desires.

While stockholder ratification of the selection of PricewaterhouseCoopers as the Company's independent registered public accounting firm is not required, the Board of Directors is nevertheless submitting the selection of PricewaterhouseCoopers to the stockholders for ratification. Unless contrary instructions are given, shares represented by proxies solicited by the Board of Directors will be voted for the ratification of the selection of PricewaterhouseCoopers as the independent registered public accounting firm of the Company for the year ending December 31, 2005. Should the selection of PricewaterhouseCoopers not be ratified by the stockholders, the Audit Committee will reconsider the matter. Even in the event the selection of PricewaterhouseCoopers is ratified, the Audit Committee, in its discretion, may direct the appointment of a different independent registered public accounting firm at any time during the year if it determines that such a change is in the best interests of the Company and its stockholders.

RECOMMENDATION OF THE BOARD OF DIRECTORS

THE BOARD OF DIRECTORS BELIEVES THAT THE SELECTION OF PRICEWATERHOUSECOOPERS LLP AS THE COMPANY'S INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM IS IN THE BEST INTERESTS OF THE COMPANY AND OF ITS STOCKHOLDERS AND, THEREFORE, UNANIMOUSLY RECOMMENDS THAT THE COMPANY'S STOCKHOLDERS VOTE FOR THIS PROPOSAL.

AUDIT COMMITTEE REPORT

The Audit Committee consists of Messrs. Puff and Meyerman and Dr. Rodriguez, each a non-employee director of the Company, with Dr. Rodriguez serving as the Chairperson of the Audit Committee. The Audit Committee's purpose is to assist the Board of Directors in oversight of the Company's internal controls and financial statements and the audit process. The Board of Directors has determined in its business judgment that all members of the Audit Committee are "independent" as is required by the listing standards of the NYSE.

Management is responsible for the preparation, presentation and integrity of the Company's financial statements, accounting and financial reporting principles and internal controls and procedures designed to assure compliance with accounting standards and applicable laws and regulations. The independent registered public accounting firm, PricewaterhouseCoopers LLP, is responsible for performing an independent audit of the consolidated financial statements in accordance with the standards of the Public Company Accounting Oversight Board.

In performing its oversight role, the Audit Committee has reviewed and discussed the audited financial statements with management and the independent registered public accounting firm. The Audit Committee has also discussed with the independent registered public accounting firm the matters required to be discussed by Statement on Auditing Standards No. 61, Communication with Audit Committees, as currently in effect. The Audit Committee has received the written disclosures and the letter from the independent registered public accounting firm required by Independence Standards Board Standard No. 1, Independence Discussions with Audit Committees, as currently in effect, and has discussed with the independent registered public accounting firm the independent registered public accounting firm's independence.

Based on the reports and discussions described in this Report, and subject to the limitations on the role and responsibilities of the Audit Committee referred to below and in the charter, the Audit Committee recommended to the Board of Directors that the audited financial statements be included in the Annual Report on Form 10-K for the fiscal year ended December 31, 2004.

The members of the Audit Committee are not professionally engaged in the practice of auditing or accounting and are not experts in the fields of accounting or auditing, including with respect to auditor independence. Members of the Audit Committee rely without independent verification on the information provided to them and on the representations made by management and the independent registered public accounting firm. Accordingly, the Audit Committee's oversight does not provide an independent basis to determine that management has maintained appropriate accounting and financial reporting principles or appropriate internal controls and procedures designed to assure compliance with accounting standards and applicable laws and regulations. Furthermore, the Audit Committee's considerations and discussions referred to above do not assure that the audit of the Company's financial statements has been carried out in accordance with the standards of the Public Company Accounting Oversight Board, that the financial statements are presented in accordance with generally accepted accounting principles or that PricewaterhouseCoopers LLP is in fact "independent."

The Audit Committee operates pursuant to a charter that was adopted by the Board of Directors on October 26, 2004 and is attached to this Proxy Statement as Appendix A.

ROBERT C. PUFF, JR.
HAROLD J. MEYERMAN
RITA M. RODRIGUEZ

Principal Accountant Fees and Services

The following table sets forth information regarding the fees for professional services rendered by PricewaterhouseCoopers LLP in each of the last two fiscal years:

Type of Fee	Year Ended December 31, 2003		Year Ended December 31, 2004
Audit Fees(1)	$	1,210,000	$	3,017,000
Audit-Related Fees(2)		1,189,000		1,483,000
Tax Fees(3)		1,328,000		1,476,000
All Other Fees		—		—

(1): Represents fees for professional services rendered in connection with the audit of the Company's financial statements, reviews of the financial statements included in each of the Company's quarterly reports on Form 10-Q, issuances of consents and comfort letters, services performed in connection with certain registration statements filed by the Company and services related to the implementation of accounting standards. For the year ended December 31, 2004, the audit fees also include $1.2 million for the audit of the Company's compliance with the Sarbanes-Oxley Act of 2002 Section 404.
(2): Represents fees for research assistance on accounting-related issues, benefit plan audit, issuance of the Association of Investment Management and Research (AIMR) performance verification and internal controls reports such as those pursuant to Statement of Auditing Standard No. 70, an additional attestation engagement and due diligence procedures in connection with new investments. For the year ended December 31, 2003, the fees also include consulting and planning for the Sarbanes-Oxley Act of 2002 Section 404 disclosure requirements.
(3): Represents fees for income tax compliance and domestic and international tax planning.

In making its determination regarding the independence of PricewaterhouseCoopers, the Audit Committee considered whether the provision of the services covered in the sections entitled "Audit-Related Fees" and "Tax Fees" was compatible with maintaining such independence. Under its charter, the Audit Committee must pre-approve all auditing and any non-auditing services with the Company's independent registered public accounting firm unless an exception to such pre-approval exists under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or the rules of the SEC.

Consistent with past practices of the Audit Committee and pursuant to the pre-approval policies of the Audit Committee adopted in October 2004, the retention of the independent registered public accounting firm to audit the Company's financial statements, including the associated fee, is approved each year by the Audit Committee. At the beginning of the year, the Audit Committee also evaluates other potential engagements by the Company of the independent registered public accounting firm, including the scope of the work proposed to be performed and the proposed fees, and approves or rejects each service considering (among other factors) the possible impact of each non-audit service on the independent registered public accounting firm's independence from management. At each subsequent meeting, the Audit Committee receives updates on the services provided by the independent registered public accounting firm, and management may present additional services for approval. In the event that a need arises for the approval of additional services between meetings (if, for example, the Company proposed to conduct a financing on an accelerated timetable), the services would be considered and provisionally approved by a designee of the Audit Committee, and the related fees for these services would be considered and approved by the Committee at its next meeting.

SECURITY OWNERSHIP OF MANAGEMENT AND
CERTAIN BENEFICIAL OWNERS

The following table sets forth information as of April 1, 2005 (unless otherwise noted) regarding the beneficial ownership of common stock by (i) each person or "group" (as that term is used in Section 13(d)(3) of the Exchange Act) known by the Company to be the beneficial owner of 5% or more of the common stock of the Company, (ii) each Named Executive Officer of the Company, (iii) each director and nominee and (iv) all directors and executive officers as a group. Except as otherwise indicated, the Company believes, based on information furnished by such persons, that each person listed below has sole voting and investment power over the shares of common stock shown as beneficially owned, subject to community property laws, where applicable.

Name of Beneficial Owner(1)	Number of Shares Beneficially Owned(2)	Percent of Common Stock(3)
Wellington Management Company, LLP(4)	2,087,361	7.0	%
Nicholas Company, Inc.(5)	1,643,500	5.5	%
William J. Nutt(6)	2,110,922	6.0	%
Sean M. Healey(7)	1,330,000	3.8	%
Seth W. Brennan(8)	865,941	2.5	%
Darrell W. Crate(9)	1,004,172	2.9	%
Nathaniel Dalton(10)	1,067,869	3.1	%
Richard E. Floor(11)	83,826	*
Stephen J. Lockwood(12)	58,826	*
Harold J. Meyerman(13)	47,576	*
Robert C. Puff, Jr.(14)	14,656	*
Rita M. Rodriguez(15)	51,326	*
All directors and executive officers as a group (11 persons)(16)	7,040,114	17.7	%

*: Less than 1%
(1): The mailing address for each executive officer, director nominee and director is c/o AMG, 600 Hale Street, Prides Crossing, Massachusetts 01965.
(2): In December 2003, the Compensation Committee approved an amendment to the Company's outstanding stock option agreements (other than options granted to directors) that resulted in unvested options becoming vested options to purchase shares of restricted stock. Any shares of restricted stock issued on the exercise of the vested options remain subject to restrictions on transfer that lapse according to specified schedules which are identical to the original option vesting schedule at the date of grant, provided the option holder remains employed by the Company. In the event the option holder ceases to be employed, any shares issuable on the exercise of these options which are then subject to restrictions on transfer will remain subject to transfer restrictions until December 2010 or seven years after the date of grant, whichever is later.
(3): In computing the number of shares of common stock beneficially owned by a person, shares of common stock subject to options held by that person that are currently exercisable or that become exercisable within 60 days of April 1, 2005 are deemed outstanding. For purposes of computing the percentage of outstanding shares of common stock beneficially owned by such person, shares of stock subject to options that are currently exercisable or that become exercisable within 60 days of April 1, 2005 are deemed to be outstanding for the holder thereof but are not deemed to be outstanding for purposes of computing the ownership percentage of any other person. As of April 1, 2005, a total of 33,329,832 shares of common stock were outstanding.
(4): Information is based on a Schedule 13G filed with the SEC on February 14, 2005 by Wellington Management Company, LLP, a registered investment adviser, and the affiliate named therein. The

address of Wellington Management Company, LLP and the affiliate named therein is listed in such Schedule 13G as 75 State Street, Boston, Massachusetts 02109.

(5): Information is based on a Schedule 13G filed with the SEC on February 11, 2005 by Nicholas Company, Inc., a registered investment adviser, and the affiliate named therein. The address of Nicholas Company, Inc. and the affiliate named therein is listed in such Schedule 13G as 700 North Water Street, Milwaukee, Wisconsin 53202.
(6): Includes 1,732,002 shares of common stock subject to options exercisable within 60 days of April 1, 2005, of which 496,719 are subject to restrictions on transferability.
(7): Includes 1,321,336 shares of common stock subject to options exercisable within 60 days of April 1, 2005, of which 464,219 are subject to restrictions on transferability.
(8): Includes 853,194 shares of common stock subject to options exercisable within 60 days of April 1, 2005, of which 386,562 are subject to restrictions on transferability.
(9): Includes 977,672 shares of common stock subject to options exercisable within 60 days of April 1, 2005, of which 409,063 are subject to restrictions on transferability.
(10): Includes 1,045,416 shares of common stock subject to options exercisable within 60 days of April 1, 2005, of which 409,063 are subject to restrictions on transferability.
(11): Includes 51,326 shares of common stock subject to options exercisable within 60 days of April 1, 2005.
(12): Includes 51,326 shares of common stock subject to options exercisable within 60 days of April 1, 2005.
(13): Includes 43,826 shares of common stock subject to options exercisable within 60 days of April 1, 2005.
(14): Includes 12,656 shares of common stock subject to options exercisable within 60 days of April 1, 2005.
(15): Consists of 51,326 shares of common stock subject to options exercisable within 60 days of April 1, 2005.
(16): Includes 6,545,080 shares of common stock subject to options exercisable within 60 days of April 1, 2005, of which 2,410,626 are subject to restrictions on transferability.

OTHER MATTERS

Section 16(a) Beneficial Ownership Reporting Compliance

Section 16(a) of the Exchange Act requires the Company's executive officers and directors, and persons who own more than 10% of a registered class of the Company's equity securities, to file reports of ownership and changes in ownership with the SEC and the NYSE. Executive officers, directors and greater than 10% stockholders are required by SEC regulations to furnish to the Company copies of all Section 16(a) forms that they file. To the Company's knowledge, based solely on a review of the copies of such reports provided to the Company and written representations from certain reporting persons, all Section 16(a) filing requirements applicable to any of its executive officers, directors and greater than 10% beneficial owners have been satisfied other than one late filing reporting an option grant by each of the Company's executive officers and directors.

Independent Public Accountants

As discussed in the Audit Committee Report, PricewaterhouseCoopers LLP served as the Company's independent registered public accounting firm during 2004 and, in Proposal 2 of this Proxy Statement, it is proposed that stockholders ratify the Audit Committee's decision to retain PricewaterhouseCoopers for fiscal year 2005. A representative of PricewaterhouseCoopers is expected to be present at the Annual Meeting, will be given an opportunity to make a statement if he or she so desires and is expected to be available to respond to appropriate questions.

Expenses of Solicitation

The cost of solicitation of proxies will be borne by the Company. In an effort to have as large a representation of stockholders at the Annual Meeting as possible, special solicitation of proxies may, in certain instances, be made personally or by mail, telephone, telegraph or other electronic means by one or more employees of the Company. The Company also may reimburse brokers, banks, nominees and other fiduciaries for postage and reasonable clerical expenses of forwarding the proxy materials to their principals who are beneficial owners of common stock.

Stockholder Proposals

Any stockholder proposals submitted pursuant to Exchange Act Rule 14a-8 and intended to be presented at the Company's 2006 Annual Meeting of Stockholders must be received by the Company at its principal executive office on or before December 30, 2005 to be eligible for inclusion in the proxy statement and form of proxy to be distributed by the Board of Directors in connection with such meeting.

Any stockholder proposals (including recommendations of nominees for election to the Board of Directors) intended to be presented at the Company's 2005 Annual Meeting of Stockholders, other than a stockholder proposal submitted pursuant to Exchange Act Rule 14a-8, must be received in writing at the principal executive office of the Company no earlier than February 1, 2006, nor later than March 18, 2006, together with all supporting documentation required by the By-laws.

Householding of Proxy Statement

Some banks, brokers and other nominee record holders may be participating in the practice of "householding" proxy statements and annual reports. This means that only one copy of this Proxy Statement or the Annual Report may have been sent to multiple stockholders in your household. The Company will promptly deliver a separate copy of its Annual Report and/or Proxy Statement to you if you call or write the Company at the following address or telephone number: Affiliated Managers Group, Inc., 600 Hale Street, Prides Crossing, Massachusetts 01965, Attention: John Kingston, III, Senior Vice President, General Counsel and Secretary, (617) 747-3300. If you would like to receive separate copies of a

proxy statement or an annual report in the future, or if you are receiving multiple copies and would like to receive only one copy for your household, you should contact your bank, broker, or other nominee record holder, or you may contact the Company at the above address and telephone number.

Other Matters

The Board of Directors does not know of any matters other than those described in this Proxy Statement that will be presented for action at the Annual Meeting. If other matters are presented, proxies will be voted in accordance with the discretion of the proxy holders.

A COPY OF THE COMPANY'S ANNUAL REPORT ON FORM 10-K FOR THE FISCAL YEAR ENDED DECEMBER 31, 2004 (INCLUDING FINANCIAL STATEMENTS AND SCHEDULES THERETO), WHICH WAS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 16, 2005, WILL BE PROVIDED WITHOUT CHARGE TO ANY PERSON TO WHOM THIS PROXY STATEMENT IS MAILED UPON THE WRITTEN REQUEST OF ANY SUCH PERSON TO JOHN KINGSTON, III, SENIOR VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY, AFFILIATED MANAGERS GROUP, INC., 600 HALE STREET, PRIDES CROSSING, MASSACHUSETTS 01965.

REGARDLESS OF THE NUMBER OF SHARES YOU OWN, YOUR VOTE IS IMPORTANT TO THE COMPANY. PLEASE SUBMIT A PROXY BY TELEPHONE, BY INTERNET OR BY COMPLETING, SIGNING, DATING AND RETURNING THE ENCLOSED PROXY CARD OR THE VOTING INSTRUCTION FORM PROVIDED BY YOUR BROKER, BANK OR OTHER NOMINEE.

Appendix A

Audit Committee Charter

AFFILIATED MANAGERS GROUP, INC.
(Adopted by the Board of Directors at a meeting held on October 26, 2004)

I. General Statement of Purpose

The purpose of the Audit Committee of the Board of Directors (the "Audit Committee") of Affiliated Managers Group, Inc. (the "Company") is to assist the Board of Directors (the "Board") in its oversight of (1) the integrity of the Company's financial statements and the system of internal control over financial reporting, (2) the Company's compliance with legal and regulatory requirements, (3) the qualifications, independence and performance of the Company's independent auditors, and (4) the performance of the Company's internal audit function.

II. Composition

The Audit Committee shall consist of at least three (3) members of the Board, each of whom shall satisfy the independence requirements established by the New York Stock Exchange Listed Company Manual for listing on the exchange, as in effect from time to time. Each member of the Audit Committee shall be financially literate (or shall become financially literate within a reasonable period of time after his or her appointment to the Audit Committee), as such qualification is interpreted by the Board in its business judgment. One or more members of the Audit Committee may qualify as an "audit committee financial expert" under the rules promulgated by the Securities and Exchange Commission ("SEC"). At least one member of the Audit Committee shall have sufficient accounting or related financial management expertise, as such qualification is interpreted by the Board in its business judgment.

The members of the Audit Committee shall be appointed annually by the Board and may be replaced or removed by the Board. Resignation or removal of a Director from the Board, for whatever reason, shall automatically and without any further action constitute resignation or removal, as applicable, from the Audit Committee. Any vacancy on the Audit Committee, occurring for whatever reason, may be filled only by the Board. The Audit Committee shall designate one of its members to be Chairperson of the committee.

No member of the Audit Committee may simultaneously serve on the audit committee of more than three (3) issuers having securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), unless the Board determines that such simultaneous service would not impair the ability of such member to effectively serve on the Audit Committee.

III. Compensation

A member of the Audit Committee may not, other than in his or her capacity as a member of the Audit Committee, the Board or any other committee established by the Board, receive from the Company any consulting, advisory or other compensatory fee from the Company. A member of the Audit Committee (or the Chairperson thereof) may receive additional directors' committee fees to compensate such member commensurate with the time and effort expended by such member to fulfill his or her duties as an Audit Committee member.

IV. Meetings

The Audit Committee shall meet as often as it determines is appropriate to carry out its responsibilities under this Charter, but not less frequently than quarterly. A majority of the members of the

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Audit Committee shall constitute a quorum for purposes of holding a meeting and the Audit Committee may act by a vote of a majority of the members present at such meeting. In lieu of a meeting, the Audit Committee may act by unanimous written consent. The Chairperson of the Audit Committee, in consultation with the other committee members, may determine the frequency and length of the committee meetings and may set meeting agendas consistent with this Charter.

Periodically, the Audit Committee shall also meet separately with management, with the persons responsible for the internal audit function, and with the independent auditors.

V. Responsibilities and Authority

A.

Review of Charter

•

The Audit Committee shall review and reassess the adequacy of this Charter annually and recommend to the Board any amendments or modifications to the Charter that the Audit Committee deems appropriate.

B.

Annual Performance Evaluation of the Audit Committee

•

At least annually, the Audit Committee shall evaluate its own performance and report the results of such evaluation to the Board.

C.

Matters Relating to Selection, Performance and Independence of Independent Auditor

•

The Audit Committee shall have the sole authority to appoint, retain, evaluate and terminate the Company's independent auditor, and to determine compensation for the independent auditor. The Audit Committee may consult with management in fulfilling these duties, but may not delegate these responsibilities to management. The Audit Committee shall instruct the independent auditor that the independent auditor shall report directly to the Audit Committee, and shall be directly responsible for oversight of such auditor's work.

•

The Audit Committee shall pre-approve all auditing services and the terms thereof (which may include providing comfort letters in connection with securities underwritings) and non-audit services (other than non-audit services prohibited under Section 10A(g) of the Exchange Act or the applicable rules of the SEC or the Public Company Accounting Oversight Board) to be provided to the Company by the independent auditor, provided that the pre-approval requirement is waived with respect to the provision of non-audit services for the Company if the "de minimus" provisions of Section 10A(i)(1)(B) of the Exchange Act are satisfied. This authority to pre-approve non-audit services may be delegated to one or more members of the Audit Committee, who shall present all decisions to pre-approve an activity to the full Audit Committee at its first meeting following such decision.

•

The Audit Committee shall evaluate the independent auditors' qualifications, performance and independence, and shall present its conclusions with respect to the independent auditors to the full Board. As part of such evaluation, at least annually, the Audit Committee shall:

•: obtain and review a report or reports from the independent auditor describing (1) the auditor's internal quality-control procedures, (2) any material issues raised by the most recent internal quality-control review or peer review, of the auditors, or by any inquiry or investigation by government or professional authorities within the preceding five years, regarding one or more independent audits carried out by the firm, and any steps taken to address any such issues, and (3), in order to assess the auditor's independence, all relationships between the independent auditor and the Company;
•: review and evaluate the performance of the independent auditor and the lead partner of the independent auditor; and

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•: assure the regular rotation of the audit partners (including, without limitation, the lead and concurring partners) as required under the Exchange Act and Regulation S-X.

•

The Audit Committee shall establish policies with respect to the potential hiring of current or former employees of the independent auditor.

D.

Audited Financial Statements and Annual Audit

•

The Audit Committee shall review the overall audit plan (both internal and external) with the independent auditor and the members of management who are responsible for preparing the Company's financial statements, including the Company's Chief Financial Officer and/or principal accounting officer or principal financial officer (the Chief Financial Officer and such other officer or officers are referred to herein collectively as the "Senior Accounting Executive").

•

The Audit Committee shall review (and, where appropriate, discuss with management, including the Company's Senior Accounting Executive) and with the independent auditor:

(i): the Company's annual audited financial statements, including (a) all critical accounting policies and practices used or to be used by the Company, (b) any significant financial reporting issues that have arisen in connection with the preparation of such audited financial statements, and (c) the Company's disclosures under "Management's Discussion and Analysis of Financial Conditions and Results of Operations," prior to the filing of the Company's Annual Report on Form 10-K;
(ii): analyses (if any) prepared by management, the internal auditors and/or the independent auditors setting forth significant financial reporting issues and judgments made in connection with the preparation of the financial statements, including analyses of the effects of alternative generally accepted accounting principles ("GAAP") methods on the financial statements;
(iii): the adequacy of the Company's internal controls (including those relating to financial reporting) that could significantly affect the integrity of the Company's financial statements;
(iv): major changes in and other issues regarding accounting and auditing principles and procedures, including any significant changes in the Company's selection or application of accounting principles; and
(v): the effect of regulatory and accounting initiatives, as well as off-balance sheet transactions and structures, on the financial statements of the Company. |

•

The Audit Committee shall review and discuss with the independent auditor:

(i): how the independent auditor plans to handle its responsibilities under the Private Securities Litigation Reform Act of 1995 (including its responsibility to notify the SEC of material illegal acts in certain circumstances where the management and board of directors of a company have failed to take appropriate remedial actions);
(ii): any audit problems or difficulties (including any difficulties encountered by the auditor in the course of performing its audit work) and management's response thereto, including any restrictions on the scope of its activities or its access to information, and any significant disagreements with management;
(iii): the accounting treatment for any transactions material to the Company; and
(iv): the report required to be delivered by such auditors pursuant to Section 10A(k) of the Exchange Act.

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•: If reported to the Audit Committee by the independent auditor, the Audit Committee shall discuss with the CEO and CFO of the Company (1) any significant deficiencies and material weaknesses in the design or operation of internal controls and procedures for financial reporting which could adversely affect the Company's ability to record, process, summarize and report financial information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act, within the time periods specified in the SEC's rules and forms, and (2) any fraud involving management or other employees who have a significant role in the Company's internal controls and procedures for financial reporting.
•: Based on the Audit Committee's review and discussions (1) with management of the audited financial statements, (2) with the independent auditor of the matters required to be discussed by Statement of Auditing Standards No. 61 ("SAS 61") (including, inter alia, concerning the auditor's responsibility under generally accepted auditing standards, management's judgments and accounting estimates, significant adjustments, and disagreements with management), and (3) with the independent auditor concerning the independent auditor's independence, the Audit Committee shall make a recommendation to the Board as to whether the Company's audited financial statements should be included in the Company's Annual Report on Form 10-K for the last fiscal year.
•: The Audit Committee shall prepare the Audit Committee report required by Item 306 of Regulation S-K of the Exchange Act (or any successor provision) to be included in the Company's annual proxy statement, including all findings required by the Exchange Act.
E.: Internal Audit Function
•: The Audit Committee shall evaluate the performance and responsibilities of the Company's internal audit function. Such evaluation shall include a review of the Company's internal audit function with the independent auditors.
F.: Unaudited Quarterly Financial Statements
•: The Audit Committee shall discuss with management and the independent auditor the Company's quarterly financial statements and the Company's related disclosures under "Management's Discussion and Analysis of Financial Condition and Results of Operations" in the Company's Quarterly Reports on Form 10-Q.
G.: Earnings Press Releases
•: The Audit Committee shall discuss with management and the independent auditor earnings press releases, as well as financial information and earnings guidance provided to analysts and rating agencies (which need not occur in advance of each such release or other communication, but may instead be done generally, by means of discussion of the types of information to be disclosed and the types of presentation to be made).
H.: Risk Assessment and Management
•: The Audit Committee shall discuss the Company's policies with respect to risk assessment and risk management.
I.: Procedures for Addressing Complaints and Concerns
•: The Audit Committee shall establish procedures for (1) the receipt, retention and treatment of complaints from employees of the Company regarding accounting, internal accounting controls, or auditing matters and (2) the confidential, anonymous submission by employees of the Company of concerns regarding questionable accounting or auditing matters or possible violations of any applicable Company codes of conduct.

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J.: Regular Reports to the Board
•: The Audit Committee shall regularly report to and review with the Board any issues that arise with respect to the quality or integrity of the Company's financial statements, the Company's compliance with legal or regulatory requirements, the performance and independence of the independent auditors, the performance of the internal audit function and any other matters that the Audit Committee deems appropriate or is requested to review for the benefit of the Board.
K.: Legal and Regulatory Compliance
•: The Audit Committee shall discuss with management and the independent auditor the legal and regulatory requirements applicable to the Company and its subsidiaries and the Company's compliance with such requirements.
•: The Audit Committee shall discuss with management legal or regulatory matters (including pending or threatened litigation, regulatory examinations or inquiries, if any) that may have a material effect on the Company's financial statements or its compliance policies and procedures.

VI. Additional Authority

The Audit Committee is authorized, on behalf of the Board, to do any of the following as it deems necessary or appropriate:

A.: Engagement of Advisors
•: The Audit Committee may engage independent legal, accounting or other advisors it deems necessary or advisable to carry out its responsibilities and powers, and, if such legal, accounting or other advisors are engaged, shall determine the compensation or fees payable to (and shall receive the necessary funding to pay) such advisors.
B.: General
•: The Audit Committee may form and delegate authority to subcommittees consisting of one or more of its members as the Audit Committee deems appropriate to carry out its responsibilities and exercise its powers.
•: The Audit Committee may perform such other oversight functions as may be requested by the Board from time to time.

Notwithstanding the responsibilities and powers of the Audit Committee set forth in this Charter, the Audit Committee does not have the responsibility of planning or conducting audits of the Company's financial statements or determining whether the Company's financial statements are complete, accurate and in accordance with GAAP. Such responsibilities are the duty of management and, to the extent of the independent auditor's audit responsibilities, the independent auditor. In addition, it is not the duty of the Audit Committee to conduct investigations or to assure compliance with laws and regulations.

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Appendix B

AFFILIATED MANAGERS GROUP, INC.
LONG-TERM EXECUTIVE INCENTIVE PLAN

1. PURPOSE. This Plan is intended to create incentives to allow the Company to attract and retain executive officers who will contribute to increases in stockholder value, and that Awards made under this Plan be used to achieve the objectives of (i) aligning executive incentive compensation with such increases in stockholder value, and (ii) using deferred incentive compensation as a tool to retain key employees. It is the intent of the Company that compensation payable under this Plan shall qualify as performance-based compensation within the meaning of Section 162(m) of the Code.

2. DEFINITIONS. Capitalized terms not otherwise defined herein shall have the meanings set forth below:

(a) "AWARD" shall mean, for any Participant, that percentage of an Incentive Pool granted by the Committee to the Participant pursuant to Section 5.2.

(b) "BASE CASH NET INCOME" for any fiscal year shall mean the Company's Cash Net Income, less the after-tax impact of such Performance Fees as the Committee may determine.

(c) "BASE CASH EARNINGS PER SHARE" for any fiscal year shall mean Base Cash Net Income, divided by the adjusted diluted average number of Shares during the fiscal year calculated in a manner consistent with the Company's presentation of cash earnings per share in its financial disclosures for such fiscal year.

(d) "CASH NET INCOME" for any fiscal year shall mean the Company's cash net income calculated in a manner consistent with the Company's presentation of such measure in its financial disclosures for such fiscal year.

(e) "CODE" shall mean the Internal Revenue Code of 1986, as amended.

(f) "COMMITTEE" shall mean those members of the Compensation Committee of the Board of Directors of the Company who are "outside directors" and "non-employee directors "as such terms are defined under the Code and applicable regulations and Rule 16b-3 promulgated under the Securities Exchange Act of 1934, as amended, respectively. If the Compensation Committee includes members who are not outside directors or non-employee directors, as so defined, it shall act with respect to this Plan without the participation of such nonqualifying members, and all references herein to the Committee shall be deemed to refer to the Compensation Committee so acting.

(g) "COMPANY" shall mean Affiliated Managers Group, Inc.

(h) "FISCAL YEAR" shall mean the fiscal year of the Company, which is the calendar year.

(i) "INCENTIVE POOL" shall mean, with respect to any Performance Period, the total amount available for Awards for such Performance Period as determined in accordance with Section 6.1.

(j) "PARTICIPANT" shall mean an executive officer designated by the Committee pursuant to Section 4 to participate herein with respect to a Performance Period.

(k) "PERFORMANCE FEES" shall mean, with respect to any Performance Period, those fee revenues determined by the Committee to be non-recurring in nature and not appropriate for inclusion in Base Cash Net Income.

(l) "PERFORMANCE MEASURE" for any Performance Period shall mean Base Cash Earnings per Share meeting the target level set by the Committee for such Performance Period.

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(m) "PERFORMANCE PERIOD" shall mean each fiscal year of the Company.

(n) "PLAN" shall mean the Affiliated Managers Group, Inc. Long-Term Executive Incentive Plan, as amended from time to time.

(o) "PRE-TAX CASH NET INCOME" for any fiscal year shall mean the Company's Cash Net Income plus any component of consolidated income tax expense used to calculate Cash Net Income for such fiscal year.

(p) "SHARE" shall mean a share of the common stock, par value $.01 per share, of the Company.

(q) "STOCK PLAN" shall mean any authorized stock plan of the Company.

(r) "TRUST" shall mean any trust established pursuant to a trust agreement between the Company and a trustee, or any similar or successor trust, under which Awards may be paid pursuant to Section 6.4 of this Plan.

3. ADMINISTRATION. Subject to Section 15, the Committee shall have sole discretionary power to interpret the provisions of this Plan, to administer and make all decisions and exercise all rights of the Company with respect to this Plan. The Committee shall have final authority to apply the provisions of the Plan and determine, in its sole discretion, the amount of the Incentive Pool and Awards to be paid or allocated to Participants hereunder and shall also have the exclusive discretionary authority to make all other determinations (including, without limitation, the interpretation and construction of the Plan and the determination of relevant facts) regarding the entitlement to benefits hereunder and the amount of benefits to be paid from the Plan. The Committee's exercise of this discretionary authority shall at all times be in accordance with the terms of the Plan and shall be entitled to deference upon review by any court, agency or other entity empowered to review its decision, and shall be enforced provided that it is not arbitrary, capricious or fraudulent.

4. ELIGIBILITY. For each Performance Period, the Committee in its discretion shall select those executive officers who shall be Participants. The selection of an individual to be a Participant in any one Performance Period does not entitle the individual to be a Participant in any other Performance Period.

5. PERFORMANCE MEASURE AND AWARDS.

5.1 PERFORMANCE MEASURE. Within the first 90 days of a Performance Period, the Committee shall establish the target amount of Base Cash Earnings per Share and the formula for determining the size of the Incentive Pool for such Performance Period, which target amount and formula shall be set forth in the minutes of the meetings of the Committee. The size of the Incentive Pool shall be determined by reference to growth in the Company's Pre-Tax Cash Net Income.

5.2 GRANTING OF AWARDS. Within the period of time prescribed by Section 162(m) of the Code and the regulations promulgated thereunder, the Committee may grant to any Participant an Award representing a percentage of the Incentive Pool to be determined for such Performance Period. In no event shall Awards representing more than 100 percent of an Incentive Pool be granted to Participants; nor shall the Award for any individual Participant exceed five percent of the Company's Pre-Tax Cash Net Income. The Committee shall notify each Participant of the grant of an Award in such manner as it shall deem appropriate. The Award to each Participant shall be set forth in the minutes of the meetings of the Committee.

5.3 NATURE OF AWARDS. The Awards granted under this Plan shall be used solely as a device for the measurement and determination of certain compensation to be paid to each Participant as provided herein. Awards shall not constitute or be treated as property or as a trust fund of any kind or as capital stock of the Company, stock options or other form of equity or security until they are paid out in the form of cash or Shares.

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6. VALUATION OF INCENTIVE POOL AND PAYMENTS.

6.1 VALUATION. If at the end of a Performance Period, the Performance Measure for such Performance Period has been attained, the total value of the Incentive Pool for the Performance Period shall be determined based upon the formula adopted by the Committee for such Performance Period. The value of each Participant's Award shall be equal to the percentage of the Incentive Pool represented by such Award which has been allocated to him or her for the Performance Period.

6.2 COMMITTEE CERTIFICATION. No Participant shall receive any cash or Shares under this Plan unless the Committee has certified, by resolution or other appropriate action in writing, that the amount of the Incentive Pool has been accurately determined in accordance with the terms, conditions and limits of the Plan and that the Performance Measure has in fact been satisfied. The Committee shall have the discretion to reduce the size of the Incentive Pool or the size of any individual Award, but the Committee may not, however, increase the maximum amount permitted to be paid to any Participant under Section 5.2 of this Plan, increase the size of any individual Award or authorize the payment of cash or Shares under this Plan if the Performance Measure has not been satisfied.

6.3 PAYMENTS TO PARTICIPANTS. Once the value of the Incentive Pool is determined pursuant to Section 6.1 and certified by the Committee in accordance with Section 6.2, and once attainment of the Performance Measure has also been so certified, and subject to the provisions of Section 10, a Participant shall be paid his or her Award in cash or Shares. To the extent the Award is payable in Shares, it shall be made from Shares reserved under a Stock Plan.

6.4 DEFERRAL OF PAYMENTS. Notwithstanding the foregoing, the Committee reserves the right to defer payment of Awards to Participants, subject to such terms and provisions as the Committee may determine (including additional time-based vesting), through the Trust or otherwise, consistent with its intention to employ long-term incentive award arrangements in which the value of awards may be directly tied to the value of the Company's common stock. Any such deferral shall be designed to comply with the requirements of Section 409A of the Code to the extent applicable. Any portion of the Awards set aside in the Trust shall be subject to and accordance with the terms of the Trust.

7. FORFEITURE. A Participant whose employment with the Company terminates for any reason prior to payment of an Award (including payment to the Trust) or prior to fulfilling the vesting requirements for his or her deferred Award hereunder shall forfeit all rights to the Award which might otherwise have been granted to him or her, or the deferred Award, as the case may be. The Committee may allocate part or all of an Award forfeited prior to the completion of the Performance Period to one or more executives not presently designated as Participants, including newly hired executives. In accordance with the terms of the Trust, forfeitures of Awards that occur after the payment of an Award to the Trust will be allocated to other Participants. In no event shall the reallocation of any forfeited Award or portion thereof result in any increase in any other Award intended to satisfy the performance-based exception requirements of Section 162(m) of the Code.

8. AMENDMENT OR TERMINATION OF PLAN. The Company may amend or terminate this Plan at any time or from time to time; provided, however, that no such amendment or termination shall, without the written consent of the Participants, in any material adverse way affect the rights of a Participant with respect to benefits earned prior to the date of amendment or termination.

9. LIMITATION OF COMPANY'S LIABILITY. Subject to its obligation to make payments as provided for hereunder, neither the Company nor any person acting on behalf of the Company shall be liable for any act performed or the failure to perform any act with respect to this Plan, except in the event that there has been a judicial determination of willful misconduct on the part of the Company or such person. The Company is under no obligation to fund any of the payments required to be made hereunder in advance of their actual payment or to establish any reserves with respect to this Plan. Any benefits which become payable hereunder shall be paid from the general assets of the Company. No Participant, or his or

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her beneficiary or beneficiaries, shall have any right, other than the right of an unsecured general creditor, against the Company in respect of the benefits to be paid hereunder.

10. WITHHOLDING OF TAX. Anything to the contrary notwithstanding, all payments required to be made by the Company hereunder shall be subject to the withholding of such amounts as the Company reasonably may determine that it is required to withhold pursuant to applicable federal, state or local law or regulation. Withholding can be made in the form of Shares, if the Committee so determines.

11. ASSIGNABILITY. Except as otherwise provided by law, no benefit hereunder shall be assignable, or subject to alienation, garnishment, execution or levy of any kind, and any attempt to cause any benefit to be so subject shall be void.

12. NO CONTRACT FOR CONTINUING SERVICES. This Plan shall not be construed as creating any contract for continued services between the Company and any Participant and nothing herein contained shall give any Participant the right to be retained as an employee of the Company.

13. GOVERNING LAW. This Plan shall be construed, administered, and enforced in accordance with the laws of the Commonwealth of Massachusetts.

14. NON-EXCLUSIVITY. Subject to Section 15, the Plan does not limit the authority of the Company, the Committee, or any subsidiary of the Company, to grant awards or authorize any other compensation under any other plan or authority, including, without limitation, awards or other compensation based on the same Performance Measure used under the Plan. In addition, executives not selected to participate in the Plan may participate in other plans of the Company.

15. SECTION 162(M) CONDITIONS; BIFURCATION OF PLAN. It is the intent of the Company that the Plan and Awards made hereunder satisfy and be interpreted in a manner, that, in the case of Participants who are or may be persons whose compensation is subject to Section 162(m), satisfies any applicable requirements as performance-based compensation. Any provision, application or interpretation of the Plan inconsistent with this intent to satisfy the standards in Section 162(m) of the Code shall be disregarded. Notwithstanding anything to the contrary in the Plan, the provisions of the Plan may at any time be bifurcated by the Committee in any manner so that certain provisions of the Plan intended (or required in order) to satisfy the applicable requirements of Section 162(m) are applicable only to persons whose compensation is subject to Section 162(m).

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AFFILIATED MANAGERS GROUP, INC.

600 Hale Street, Prides Crossing, Massachusetts 01965

Proxy for Common Stock

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

The undersigned hereby appoints Sean M. Healey, William J. Nutt and John Kingston, III, and each of them, proxies with full power of substitution to vote, as designated on the reverse side of this ballot, all of the shares of Common Stock of Affiliated Managers Group, Inc. (the "Company") that the undersigned is entitled to vote at the Annual Meeting of Stockholders of the Company, to be held at the Company's offices, 600 Hale Street, Prides Crossing, Massachusetts 01965 on Wednesday, June 1, 2005 at 2:00 p.m., Boston time, and at any adjournments or postponements thereof, and hereby grants each of them full power and authority to act on behalf of the undersigned at said meeting and any adjournments or postponements thereof. The undersigned hereby revokes any proxy previously given in connection with such meeting and acknowledges receipt of the Notice of Annual Meeting of Stockholders, the Proxy Statement and the 2004 Annual Report to Stockholders.

(Continued, and to be signed, on reverse side)

AFFILIATED MANAGERS GROUP, INC.
PLEASE MARK VOTE IN OVAL IN THE FOLLOWING MANNER
USING DARK INK ONLY ý



		Use this number to vote by phone or Internet

1.	To elect the following nominees as directors of the Company, each for a one-year term to continue until the 2006 Annual Meeting of Stockholders and until the successor of the respective nominee is duly elected and qualified.
	Nominees:	01—Richard E. Floor	04—William J. Nutt
		02—Sean M. Healey	05—Robert C. Puff, Jr.
		03—Harold J. Meyerman	06—Rita M. Rodriguez
		For All	Withhold All	For All Except
		o	o	o
	(INSTRUCTION: To withhold authority for any individual nominee, mark "For All Except" and write the nominee's name on the space provided above.))
2.	To approve the material terms of the Company's Long-Term Executive Incentive Plan, as amended.
	o For o Against o Abstain
3.	To ratify the selection of PricewaterhouseCoopers LLP as the Company's independent registered public accounting firm for the current fiscal year.
	o For o Against o Abstain
4.	To consider and act upon such other business as may properly come before the meeting or any adjournments or postponements thereof.

This proxy, when properly executed, will be voted in the manner directed herein by the undersigned stockholder. If no instruction is indicated, the undersigned's vote will be cast "FOR" Proposal 1—election of each of the nominees for director and "FOR" each of the other proposals. The undersigned's votes will be cast in accordance with the proxies' discretion on such other business as may properly come before the meeting or any adjournments or postponements thereof.

For joint accounts, each owner should sign. Executors, administrators, trustees, corporate officers and others acting in a representative capacity should give full title or authority.

Vote by Internet or Telephone or Mail
24 Hours a Day, 7 Days a Week

Internet and telephone voting is available through 4:00 p.m. Eastern Time
the business day prior to the date of the annual meeting.

Your Internet or telephone vote authorizes the names proxies to vote your shares in the same manner as if you marked, signed and returned your proxy card.

Internet
http://www.eproxyvote.com/amg
Use the Internet to vote your proxy. Have your proxy card in hand when you access the web site. You will be prompted to enter your control number, located in the box above, to create and submit an electronic ballot.

Telephone
1-866-207-3912
Use any touch-tone telephone to vote your proxy. Have your proxy card in hand when you call. You will be prompted to enter your control number, located in the box above, and then follow the directions given.

Mail
Mark, sign and date your proxy card and return it in the enclosed postage-paid envelope.

If you vote your proxy by Internet or by telephone,
you do NOT need to mail back your proxy card.

QuickLinks

PROPOSAL 1: ELECTION OF DIRECTORS
COMPARISON OF CUMULATIVE TOTAL RETURN* AMONG THE COMPANY, THE S&P 500 INDEX, AND THE PEER GROUP INDEX
COMPENSATION COMMITTEE REPORT ON EXECUTIVE COMPENSATION
CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
PROPOSAL 2: APPROVAL OF THE MATERIAL TERMS OF THE COMPANY'S LONG-TERM EXECUTIVE INCENTIVE PLAN
PROPOSAL 3: RATIFICATION OF THE SELECTION OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
AUDIT COMMITTEE REPORT
SECURITY OWNERSHIP OF MANAGEMENT AND CERTAIN BENEFICIAL OWNERS
OTHER MATTERS
Audit Committee Charter
AFFILIATED MANAGERS GROUP, INC. LONG-TERM EXECUTIVE INCENTIVE PLAN
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