Simcoe Capital Management, LLC 13D and 13G filings for Koppers Holdings Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-05-19 5:33 pm Purchase | 2026-05-12 | 13D | KOPPERS HOLDINGS, INC. KOP | Simcoe Capital Management, LLC | 1,349,005 7.000% | 1,349,005 (New Position) | Filing |