Recent News

• 06.18.2025 - Singular Research Summer Solstice
• 06.12.2025 - Sidoti Small Cap Conference
• 06.05.2025 - Koppers Announces Participation in Upcoming Investor Conferences
• 05.29.2025 - Koppers Names James A. Sullivan President and Chief Transformation Officer; New Role Created to Oversee Company-wide Catalyst Initiative
• 05.29.2025 - Barrington Research Spring Virtual Investment Conference
• 05.28.2025 - Koppers Management Participating in Barrington Research Spring Virtual Investment Conference
• 05.21.2025 - B. Riley Securities Investor Conference
• 05.12.2025 - Koppers Management Participating in B. Riley Securities Investor Conference
• 05.09.2025 - Q1 2025 Koppers Holdings Inc. Earnings Conference Call
• 05.09.2025 - KOPPERS REPORTS FIRST QUARTER 2025 RESULTS; MAINTAINS 2025 OUTLOOK FOR ADJUSTED EBITDA AND EPS

Recent Filings

• 05.29.2025 - 8-K Current report
• 05.29.2025 - EX-99.1 EX-99.1
• 05.22.2025 - 4 Statement of changes in beneficial ownership of securities
• 05.09.2025 - 4 Statement of changes in beneficial ownership of securities
• 05.09.2025 - 4 Statement of changes in beneficial ownership of securities
• 05.09.2025 - 4 Statement of changes in beneficial ownership of securities
• 05.09.2025 - 4 Statement of changes in beneficial ownership of securities
• 05.09.2025 - 4 Statement of changes in beneficial ownership of securities
• 05.09.2025 - S-8 Securities to be offered to employees in employee benefit plans
• 05.09.2025 - 4 Statement of changes in beneficial ownership of securities