Koppers Management Participating in NYSE Materials Virtual Investor Access Day

Group 1 - Koppers Holdings Inc. will participate in the NYSE Materials Virtual Investor Access Day on March 5, 2026, with management represented by key executives [1] - The company is an integrated global provider of treated wood products, wood preservation technologies, and carbon compounds, employing approximately 1,850 people [1] - Koppers focuses on creating, protecting, and preserving essential infrastructure elements, including railroad crossties and utility poles, while emphasizing innovation and sustainability [1] Group 2 - Presentation materials for the investor access day will be available on Koppers' Investor Relations section of their website [1] - Inquiries from the media and investment community can be directed to designated representatives at Koppers [1]