• Koppers posted a Q2 net loss of USD 147.5 million, swinging from profit as impairment, restructuring, and plant closure costs totaled USD 215.8 million.
• Net sales rose 3% to USD 520.1 million versus the prior-year quarter.
• GAAP diluted EPS fell to a loss of USD 7.71.
• Adjusted EBITDA (non-GAAP) slipped 7.9% to USD 71 million, on higher raw material, freight and legal costs, unfavorable RUPS pricing, and 2025 divestitures.
• Management accelerated the planned closure of its Stickney, Illinois CMC plant, citing continued market pressure and a more challenging margin environment through 2026.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Koppers Holdings Inc. published the original content used to generate this news brief on August 06, 2026, and is solely responsible for the information contained therein.