OM Group, Inc. (OMG) announced the appointment of David Knowles as president and chief operating officer, effective April 8. Knowles will have responsibility for all of OM Group's global business operations.
Knowles most recently served as executive vice president and chief operating officer of Myers Industries, a publicly-traded international diversified manufacturer serving industrial, automotive, commercial and consumer markets. Prior to Myers, Knowles was the president and chief executive officer of Aristech Acrylics LLC, a specialty materials company.
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