Leading Proxy Advisory Firms ISS and Glass Lewis Recommend OM Group Stockholders Vote "FOR" the Merger Transaction with Apollo Affiliated Funds in Partnership with Platform Specialty Products

CLEVELAND, July 30, 2015 /PRNewswire/ -- OM Group, Inc. OMG today announced that both proxy advisory firms Institutional Shareholder Services (ISS) and Glass Lewis & Co., LLC have recommended that their clients vote FOR adoption of the merger agreement dated May 31, 2015 ("Merger Agreement") among the Company and funds managed by affiliates of Apollo Global Management, LLC APO and a wholly-owned subsidiary of Platform Specialty Products PAH at the Special Meeting of Stockholders on August 10, 2015.

The Merger Agreement provides OM Group stockholders with a cash price of $34.00 per share, representing an approximately 28% premium above OM Group's closing share price on May 29, 2015, the last trading day prior to the announcement of the merger.

"We are pleased that both ISS and Glass Lewis have recommended that our stockholders vote FOR the acquisition of the Company by Apollo.  We look forward to our stockholders' support for the transaction at our Special Meeting of Stockholders on August 10," said Joe Scaminace, Chairman and Chief Executive Officer of OM Group.

About OM Group
OM Group is a technology-driven diversified industrial company serving attractive global markets, including automotive systems, electronic devices, aerospace and defense, industrial and medical. Its business platforms use innovation and technology to address customers' complex applications and demanding requirements. For more information, visit the Company's website at www.omgi.com.

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995
This communication contains "forward-looking" statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995, known as the PSLRA. These statements, as they relate to OM Group, its management or the proposed transactions among OM Group, the Apollo Funds and Platform, involve risks and uncertainties that may cause results to differ materially from those set forth in the statements. These statements are based on current plans, estimates and projections, and therefore, you are cautioned not to place undue reliance on them. No forward-looking statement can be guaranteed, and actual results may differ materially from those projected. OM Group undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise, except to the extent required by law. Forward-looking statements are not historical facts, but rather are based on current expectations, estimates, assumptions and projections about the business and future financial results, and other legal, regulatory and economic developments. We use words such as "anticipates," "believes," "plans," "expects," "projects," "future," "intends," "may," "will," "should," "could," "estimates," "predicts," "potential," "continue," "guidance," and similar expressions to identify these forward-looking statements that are intended to be covered by the safe harbor provisions of the PSLRA. Actual results could differ materially from the results contemplated by these forward-looking statements due to a number of factors, including: volatility in raw material and energy prices; the failure of OM Group's suppliers to timely deliver products in accordance with contract specifications; increased competitive activity including actions by larger competitors or lower-cost producers; the failure to achieve expected sales levels; changes in OM Group's customer relationships, including loss of particular business for competitive or other reasons; the impact of labor problems, including labor disruptions at OM Group or at one or more of its large customers or suppliers; changes in OM Group's relationship with joint-venture partners; restrictions imposed by outstanding indebtedness and indebtedness incurred in connection with the proposed transaction and future indebtedness; changes to tariffs or the imposition of new tariffs or trade restrictions; worldwide and regional economic, business, and political conditions; changes in customer demand and requirements; business cycles and other industry conditions; the timing of new services or facilities; ability to compete with others in the industry in which OM Group operates; effects of compliance with laws; matters relating to operating facilities; effect and costs of claims (known or unknown) relating to litigation and environmental remediation; volatility in the capital and financial markets or changes to the credit markets and/or access to those markets; changes in interest or foreign exchange rates; an adverse change in OM Group's, the Apollo Funds' or Platform's credit ratings, which could increase borrowing costs and/or hamper access to the credit markets; the risks associated with doing business outside of the United States; the failure to develop technologies, processes or products needed to support consumer demand; technology advancements; the inability to recover the costs to develop and test new products or processes; ability to attract and retain key personnel; escalation in the cost of providing employee health care; disruption from the proposed transaction making it more difficult to maintain relationships with customers, employees or suppliers; the failure to obtain approval of the merger by the shareholders of OM Group and the failure to satisfy various other conditions to the closing of the merger contemplated by the merger agreement; changes in the economic climate in the markets in which OM Group operates; unanticipated increases in materials and/or labor, and delays in project completion and/or lease-up that result in increased costs and/or reduce the profitability of a completed project; results of litigation involving OM Group; the cost, disruption and diversion of management's attention associated with campaigns commenced by activist investors seeking to influence OM Group to take particular actions favored by the activist or gain representation on OM Group's Board of Directors; information security breaches and other disruptions that could compromise our information and expose us to business interruption, increased costs, liability and reputational damage; consolidation among competitors or customers; inaccurate assumptions used in developing OM Group's strategic plan or operating plans or the inability or failure to successfully implement such plans; failure to successfully integrate acquisitions into operations or their related financings may impact liquidity and capital resources; inability to adequately protect OM Group's intellectual property rights; other factors that are set forth in management's discussion and analysis of OM Group's most recently filed reports with the SEC; and uncertainties associated with the proposed acquisition of OM Group by the Apollo Funds and Platform, including uncertainties relating to the anticipated timing of filings and approvals relating to the transaction, the expected timing of completion of the transaction and the ability to complete the transaction, including a possible adverse impact on our stock price, future business and financial results. This list of factors is illustrative, but by no means exhaustive. All forward-looking statements should be evaluated with the understanding of their inherent uncertainty. This document speaks only as of its date, and OM Group disclaims any duty to update the information herein.

Additional Information and Where to Find It
In connection with the proposed transaction, OM Group has filed a definitive proxy statement on Schedule 14A with the SEC on July 10, 2015. OM GROUP SHAREHOLDERS ARE ENCOURAGED TO READ THE PROXY STATEMENT AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED MERGER. The definitive proxy statement has been mailed to shareholders of OM Group. Investors and security holders will be able to obtain the documents free of charge at the SEC's website, www.sec.gov, or from OM Group at its website, www.omgi.com, or by contacting Rob Pierce, Vice President of Finance, at (216) 263-7489.

Participants in Solicitation
OM Group and its directors and executive officers and other members of management and employees may be deemed to be participants in the solicitation of proxies in respect of the proposed merger. Information concerning the proposed directors and executive officers of the combined company, OM Group's directors and executive officers and other participants in the proxy solicitation, including a description of their interests, is included in the proxy statement contained in the above-referenced definitive proxy statement on Schedule 14A filed with the SEC on July 10, 2015 and in OM Group's Form 10-K for the year ended December 31, 2014.

Media Contacts
For OM Group, Inc.
Kimberly Kriger / Daniel Yunger
Kekst and Company
(212) 521-4800

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SOURCE OM Group, Inc.