Kirby McInerney LLP is investigating potential claims against the Board of Directors of OM Group. ("OMG" or the "Company") (NYSE:OMG) concerning the proposed acquisition of the Company by funds managed by affiliates of Apollo Global Management, LLC. Pursuant to the terms of the definitive agreement, OMG stockholders will receive $34.00 in cash for each share of OMG common stock they own. The investigation concerns whether the OMG Board of Directors violated its fiduciary duties by agreeing to the proposed transaction and whether the proposed consideration adequately values the Company's common stock. If you are an OMG stockholder and wish to obtain additional information, please contact J. Brandon Walker, Esq. by email at firstname.lastname@example.org, or telephone at (212) 699-1145 or toll free at (888) 529-4787, or by filling out this contact form. There is no cost or obligation to you. Kirby McInerney LLP is a New York-based law firm concentrating in securities, whistleblower, antitrust and consumer litigation. For additional information, please go to www.kmllp.com.