Completed Acquisition of Brown Wood Preserving Company First Quarter Sales of $497.6 Million vs.$513.4 Million in Prior Year Quarter First Quarter Diluted EPS of $0.59 vs.$1.19 in Prior Year Quarter Adjusted EPS of $0.62 vs.$1.12 in Prior Year Quarter PITTSBURGH, May 3, 2024 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP), an integrated global provider of treated wood products, wood treatment chemicals, and carbon compounds, today reported net income attributable to Koppers for the first quarter of 202 ...