Q4 & Full-Year 2025 Results Safe Harbor Statement Certain statements in this presentation are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 and may include, but are not limited to, statements about sales levels, acquisitions, restructuring, declines in the value of Koppers assets and the effect of any related impairment charges, profitability and anticipated expenses and cash outflows. All forward-looking statements involve risks and uncertainties. A ...

Core Viewpoint - Koppers Holdings Inc. will participate in the Sidoti Year End Virtual Investor Conference on December 10, 2025, hosting meetings with the investment community [1][2]. Company Overview - Koppers is an integrated global provider of treated wood products, wood preservation technologies, and carbon compounds, employing approximately 1,850 people [3]. - The company focuses on creating, protecting, and preserving essential elements of global infrastructure, including railroad crossties, utility poles, and outdoor wooden structures [3]. - Koppers aims to provide safe and sustainable solutions to support rail transportation, maintain power supply, and enhance public spaces [3].

Core Points - Koppers Holdings Inc. will host meetings with the investment community in Los Angeles on October 2-3, 2025, with representation from CEO Leroy Ball and VP of Investor Relations Quynh McGuire [1] - Presentation materials for the meetings will be available on Koppers' Investor Relations website [2] Company Overview - Koppers is an integrated global provider of treated wood products, wood preservation technologies, and carbon compounds, employing 2,100 people [3] - The company focuses on creating, protecting, and preserving essential infrastructure elements, including railroad crossties, utility poles, and outdoor wooden structures, while also providing production feedstocks for steel, aluminum, and construction materials [3] - Koppers emphasizes innovation and sustainability in its operations, aiming to provide safe solutions for rail transportation and power supply [3]