UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT PURSUANT

TO SECTION 13 OR 15(D) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) February 26, 2010

Affiliated Managers Group, Inc.

(Exact Name of Registrant as Specified in Its Charter)

Delaware

(State or Other Jurisdiction of Incorporation)

(617) 747-3300

(Registrant’s Telephone Number, Including Area Code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

o            Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 5.02             Election of Directors.

On February 26, 2010, the Board of Directors elected Dwight D. Churchill as a director and member of the Audit Committee of Affiliated Managers Group, Inc. (the “Company”).  Mr. Churchill held a number of senior positions at Fidelity Investments (“Fidelity”) before retiring from the firm in early 2009.  Having joined Fidelity in 1993, he served as the head of the Fixed Income Division, head of Equity Portfolio Management and President of Investment Services.  While at Fidelity, Mr. Churchill also served as the elected chair of the Board of Governors for the 60,000-member Association for Investment Management and Research (now the CFA Institute).  Prior to joining Fidelity, Mr. Churchill served as President and Chief Executive Officer of CSI Asset Management, Inc., a subsidiary of Prudential Financial, Inc., and held senior roles at Loomis, Sayles & Company and The Public Employees Retirement System of Ohio.  Mr. Churchill holds a B.A. degree in Economics from Denison University and an M.B.A. degree from The Ohio State University.

Under the Company’s customary director equity arrangements, in connection with his election as a director, the Company granted Mr. Churchill stock options to purchase 3,125 shares of Common Stock and $40,000 of restricted stock units.

A copy of the press release announcing Mr. Churchill’s election is furnished as Exhibit 99.1 hereto and is hereby incorporated by reference herein.

ITEM 9.01             Financial Statements and Exhibits.

(c)           Exhibits.

*  This exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to the liability of that section, nor shall it be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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EXHIBIT INDEX

*  This exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to the liability of that section, nor shall it be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934.

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Exhibit 99.1

AMG Names Dwight D. Churchill to its Board of Directors

BOSTON, March 1, 2010 — Affiliated Managers Group, Inc. (NYSE: AMG) today announced the election of Dwight D. Churchill to its Board of Directors.

Mr. Churchill held a number of senior positions at Fidelity Investments before retiring from the firm in early 2009.  Having joined Fidelity in 1993, he served as the head of the Fixed Income Division, head of Equity Portfolio Management and President of Investment Services.  While at Fidelity, Mr. Churchill also served as the elected chair of the Board of Governors for the 60,000-member Association for Investment Management & Research (now the CFA Institute).  Prior to joining Fidelity, Mr. Churchill served as President and Chief Executive Officer of CSI Asset Management, Inc., a subsidiary of Prudential Financial, Inc., and held senior roles at Loomis, Sayles & Company and The Public Employees Retirement System of Ohio.  Mr. Churchill holds a B.A. degree in Economics from Denison University and an M.B.A. degree from The Ohio State University.

“We are pleased to welcome Dwight to our Board,” said Sean M. Healey, AMG’s President and Chief Executive Officer.  “With 30 years of domestic and international management experience across asset classes, Dwight is a highly regarded investment professional, and his broad industry perspective and depth of financial expertise will make him a valuable addition to AMG’s Board.”

About Affiliated Managers Group

AMG is a global asset management company with equity investments in leading boutique investment management firms (its “Affiliates”). AMG’s innovative partnership approach allows each Affiliate’s management team to own significant equity in their firm while maintaining operational autonomy. AMG’s strategy is to generate growth through the internal growth of existing Affiliates, as well as through investments in new Affiliates. In addition, AMG provides centralized assistance to its Affiliates in strategic matters, marketing, distribution, product development and operations. As of December 31, 2009 (pro forma for pending investments), the aggregate assets under management of AMG’s Affiliates were approximately $253 billion in over 350 investment products across a broad range of investment styles, asset classes and distribution channels.

Certain matters discussed in this press release may constitute forward-looking statements within the meaning of the federal securities laws. Actual results and the timing of certain events could differ materially from those projected in or contemplated by the forward-looking statements due to a number of factors, including changes in the securities or financial markets or in general economic conditions, the availability of equity and debt financing, competition for

acquisitions of interests in investment management firms, the ability to complete pending acquisitions, the investment performance of our Affiliates and their ability to effectively market their investment strategies, and other risks detailed from time to time in AMG’s filings with the Securities and Exchange Commission.

AMG routinely posts information that may be significant for investors in the Investor Information section of its website, and encourages investors to consult that section regularly. For additional information, please visit www.amg.com.

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