PITTSBURGH , Dec. 8, 2025 /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 Sidoti...
PITTSBURGH , Nov. 26, 2025 /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 the...
PITTSBURGH , Nov. 17, 2025 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP), an integrated global provider of treated wood products, wood treatment chemicals and carbon compounds, today announced...
PITTSBURGH , Nov. 7, 2025 /PRNewswire/ --Â Koppers Holdings Inc. (NYSE: KOP), an integrated global provider of treated wood products, wood treatment chemicals, and carbon compounds, today reported...
PITTSBURGH , Nov. 6, 2025 /PRNewswire/ --Â Koppers Holdings Inc. (NYSE: KOP), an integrated global provider of treated wood products, wood treatment chemicals, and carbon compounds, today announced...
Company Expands Board of Directors from Eight to Nine Members
PITTSBURGH , Oct. 24, 2025 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP), an integrated global provider of treated wood products, wood treatment chemicals, and carbon compounds, today announced...
PITTSBURGH , Sept. 25, 2025 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP)Â today announced that the company will host meetings with the investment community in Los Angeles and...
PITTSBURGH , Aug. 21, 2025 Koppers Holdings Inc. (NYSE: KOP), an integrated global provider of treated wood products, wood treatment chemicals and carbon compounds, today announced that...