KOP - Koppers Holdings Inc (KOP) Q3 2020 Earnings Call Transcript October, 26 2020 05:00 PM Koppers Holdings Inc. Image source: The Motley Fool. Koppers Holdings Inc (NYSE: KOP) Q3 2020 Earnings Call Oct 26, 2020 , 11:00 a.m. ET Operator Continue reading For further details see: Koppers Holdings Inc (KOP) Q3 2020 Earnings Call Transcript