• Koppers to meet investors at the Singular Research Invitational in Las Vegas on June 15, 2026.
• Management also scheduled for the virtual Sidoti Small Cap Conference on June 18, 2026.
• CFO Eric Brenner, Chief Accounting Officer Bradley Pearce, and investor relations head Quynh McGuire set to participate.

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 via PR Newswire (Ref. ID: 202606150755PR_NEWS_USPR_____NE82839) on June 15, 2026, and is solely responsible for the information contained therein.