Koppers Again Named Among America's Most Responsible Companies by Newsweek

Core Points - Koppers Holdings Inc. has been recognized for the fifth consecutive year on Newsweek's America's Most Responsible Companies 2025 list, achieving its highest ranking at No. 113 out of 600 finalists and No. 9 in the Materials & Chemicals category [1][2] Company Achievements - Koppers achieved a 50% reduction in scope 1 and scope 2 greenhouse gas emissions against a 2007 baseline, seven years ahead of schedule [2] - The company recorded its lowest Total Recordable Injury Rate of 2.67 since 2018 [2] - Koppers introduced a penflufen-based preservative, a patented wood protection technology, marking a significant innovation in extending the life of treated wood [2] - The company updated its materiality assessment in line with the new 2021 GRI standards and published a report on the Taskforce on Climate-Related Financial Disclosures (TCFD) [2] Evaluation Criteria - The recognition was based on environmental, social, and corporate governance information, with scores derived from 30 publicly reported key performance indicators and a reputation survey of over 26,000 U.S. consumers [2]