PITTSBURGH, Sept. 9, 2024 /PRNewswire/ -- Koppers Holdings Inc. (NYSE: KOP) today announced that the company will host meetings with the investment community as follows: Denver on September 16, 2024 Seattle on September 17, 2024 Koppers management will be represented by Leroy Ball, Chief Executive Officer, and Quynh McGuire, Vice President of Investor Relations. Presentation materials will be available on www.koppers.com in the Investor Relations section of the company's website. About Koppers Koppers (NYSE ...