Koppers Holdings Inc. – Filings and Transcripts

NYSE: KOP
Share price (9/18/26): $45.33
Market cap (9/18/26): $857 million

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Key Exhibits

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Financials Filter

ended 06/30/26 Q2

ended 03/31/26 Q1

ended 12/31/25 FY 2025

ended 09/30/25 Q3

ended 06/30/25 Q2

Prospectuses and Registrations Filter

Registration of securities for employees

Registration of securities for employees

Registration of securities for employees

Registration of securities for employees

Registration of securities for employees

Ownership Filter

Sandifer Andrew D

Wilkerson Sonja Michelle

News Filter

Reports Second Quarter 2026 Results

Announces Appointment of Eric Brenner as Chief Financial Officer and Treasurer

Reports First Quarter 2026 Results

Change in Directors, Officers or Compensation, Financial Statements or Exhibits

Change in Directors, Officers or Compensation, Financial Statements or Exhibits

Proxies Filter

Definitive proxy

Additional info about upcoming vote

Definitive proxy

Definitive proxy

Preliminary proxy

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Scanned paper annual report submission

Scanned paper annual report submission

Scanned paper annual report submission

Letter from the SEC

Correspondence with the SEC