8-KThe WireRed Alert
Executive Change
Filed Nov 5, 2025 · 7mo ago · Accession 0001315257-25-000006
Plain English
Material event — a significant development the company must disclose promptly.
Read the source below for the full document.
Filing details
- Company
- Koppers Holdings Inc.
- Ticker
- KOP
- CIK
- 1315257
- Form type
- 8-K
- Filing date
- Nov 5, 2025
- Report date
- Nov 5, 2025
- Document
- kop-20251105.htm
- Size
- 321 KB