Koppers Holdings(US:KOP) Prnewswire·2026-03-31 11:55Core Insights - Koppers Holdings Inc. has published its 2025 Annual Report and Letter to Shareholders, which includes audited financial statements for the fiscal year ending December 31, 2025 [1] - The report was filed with the U.S. Securities and Exchange Commission (SEC) on March 27, 2026 [1] Company Overview - Koppers is an integrated global provider of treated wood products, wood preservation technologies, and carbon compounds [2] - The company employs approximately 1,850 individuals and focuses on creating, protecting, and preserving essential elements of global infrastructure, including railroad crossties and utility poles [2] - Koppers aims to provide safe and sustainable solutions that support rail transportation, power supply, and public enjoyment spaces [2]