Sean M. Healey, Chairman and Chief Executive Officer of Affiliated Managers Group, Inc. (NYSE: AMG), is expected to speak at the William Blair & Company 32nd Annual Growth Stock Conference in Chicago on Tuesday, June 12, 2012 at 12:10 p.m. Central time. Mr. Healey will be joined by Jay C. Horgen, AMG’s Chief Financial Officer. AMG will provide a live audio transmission of the comments through its website at www.amg.com/InvestorRelations. A replay of the webcast will also be available through AMG’s website shortly after the conclusion of management’s remarks. 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, 2012, the aggregate assets under management of AMG’s Affiliates, pro forma for pending investments, were approximately $392 billion 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 Securities and Exchange Commission. Reference is hereby made to the “Risk Factors” set forth in the Company’s Form 10-K for the year ended December 31, 2011. 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 .