AMG Appoints Andrew Dyson as Executive Vice President and Head of Global Distribution

Affiliated Managers Group, Inc. (NYSE: AMG), a global asset management company, today appointed Andrew Dyson to a newly created position as Executive Vice President and Head of Global Distribution, responsible for managing the Company’s global distribution platform. Mr. Dyson will be based in London, reporting to Nathaniel Dalton, AMG’s President and Chief Operating Officer.

Mr. Dyson joins AMG from BlackRock, Inc., where he most recently served as Head of the Global Institutional Client Business, following the merger of BlackRock and Barclays Global Investors. In prior roles at BlackRock and Merrill Lynch Investment Managers (MLIM), Mr. Dyson held senior distribution positions, including Head of the International Institutional Business, and, before that, Head of the Institutional Business for Europe, Middle East, Africa and Asia Pacific.

"Andrew’s experience in developing and leading the world’s largest institutional asset management business will provide tremendous advantages as we continue to build out AMG’s global distribution capabilities,” said Sean M. Healey, Chairman and Chief Executive Officer of AMG. "Our strategy, which combines Affiliate-driven efforts with the platform of a global franchise, is generating strong client cash flows, and, given Andrew’s proven track record of leadership in global distribution, we are confident he will play an invaluable role in accelerating the growth and scale of our distribution worldwide.”

AMG’s Affiliates are leading boutique investment firms, recognized for their best-in-class, long-term performance track records across a broad array of investment products, particularly in global and emerging markets equity and alternative strategies. With sales and marketing offices located in major financial centers in Asia, Australia, Europe, the Middle East and North America, AMG’s distribution platform enhances the global reach of its Affiliates’ marketing efforts both within the U.S. and around the world.

"AMG is widely recognized as the leading global multi-boutique model, with unparalleled investment management talent and a broad array of outstanding alpha-generating products across its Affiliate group,” said Mr. Dyson. "As clients increasingly prefer to seek return-oriented strategies from specialist boutiques whose interests are aligned with theirs, AMG is well positioned for continued strong growth both through its existing operations around the world and through new markets. I am excited to have the opportunity to take the lead in expanding the Company’s global client activities.”

Prior to joining MLIM in 2001, Mr. Dyson was a worldwide partner at William M. Mercer, where his roles included Head of U.S. Multinational Investment Consulting and Head of U.K. Pension Fund Investment Consulting. Mr. Dyson is a fellow of the Institute of Actuaries. He earned an M.A. degree in Mathematics from Cambridge University.

About Affiliated Managers Group

AMG is a global asset management company with equity investments in leading boutique investment management firms. 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 March 31, 2011, the aggregate assets under management of AMG’s Affiliates were approximately $340 billion, in more than 350 investment products across a broad range of investment styles, asset classes and distribution channels. For more information, please visit the Company’s website at www.amg.com.

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 close pending investments, 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 SEC. Reference is hereby made to the "Cautionary Statements” set forth in the Company’s Form 10-K for the year ended December 31, 2010.

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