PITTSBURGH , June 25, 2026 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP ) today published its 2025 Corporate Sustainability Report (CSR), detailing the company's progress in advancing its...
PITTSBURGH , June 15, 2026 /PRNewswire/ --Â Koppers Holdings Inc. (NYSE: KOP) today announced that the company will host meetings with the investment community as part of its participation in upcoming...
PITTSBURGH , June 8, 2026 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP) today announced that the company will host meetings with the investment community as part of its participation in the Wells...
PITTSBURGH , May 22, 2026 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP) today announced that the company will host meetings with the investment community as part of its participation in the Barrington...
PITTSBURGH , May 15, 2026 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP) today announced that the company will host meetings with the investment community as part of its participation in the Barclays...
PITTSBURGH , May 11, 2026 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP), an integrated global provider of treated wood products, wood treatment chemicals, and carbon compounds, today announced...
Koppers (NYSE:KOP) reported essentially flat first-quarter 2026 sales but lower adjusted EBITDA, while announcing a major restructuring move in its Carbon Materials and Chemicals business that could reshape...
PITTSBURGH , May 8, 2026 /PRNewswire/ --Â Koppers Holdings Inc. (NYSE: KOP), an integrated global provider of treated wood products, wood treatment chemicals, and carbon compounds, today reported...
Continues Enterprise-wide Strategy to Focus on Improving Margins and Cash Flow