Koppers Holdings Inc. Schedules First Quarter 2018 Conference Call

PITTSBURGH, April 25, 2018 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP) intends to release its first quarter 2018 financial results before the opening of the markets on Thursday, May 3, 2018, and discuss its results on a conference call later that day at 11:00 a.m. Eastern Time....