Koppers Holdings(KOP) - 2025 Q4 - Annual Results

Exhibit 99.1 News Release FOR IMMEDIATE RELEASE For Information: Quynh McGuire Vice President, Investor Relations 412 227 2049 McGuireQT@koppers.com (1) Non-GAAP financial measure. See Non-GAAP Financial Measures for additional information and reconciliations to the most directly comparable financial measure determined and reported in accordance with U.S. GAAP. Chief Executive Officer Leroy Ball said, "We maintained our focus on aligning our cost structure with our evolving portfolio and made further progre ...