OM Group to Issue 2013 Fourth Quarter Results on February 13, 2014

CLEVELAND, Feb. 3, 2014 /PRNewswire/ -- OM Group, Inc. (NYSE: OMG) today announced that it plans to release its fourth quarter 2013 financial results before the market opens on February 13, 2014.  The company will discuss these results on a conference call at 10:00 AM (ET) on...