Koppers Holdings Inc.
SEC Filing List
KOP CIK: 0001315257
| Form | Description | Owner/Filer | Filing Agent | Date | Actions |
|---|---|---|---|---|---|
| SCHEDULE 13D | OLSHAN FROME WOLOSKY LLP /fa | 05/19/2026 | |||
| 4 | Statement of changes in beneficial owner... | Ball M Leroy | Koppers Holdings Inc. | 05/14/2026 | |
| 4 | Statement of changes in beneficial owner... | Pearce Bradley A | Koppers Holdings Inc. | 05/14/2026 | |
| SCHEDULE 13G/A | SEC Compliance Solutions /fa | 05/13/2026 | |||
| 8-K | Current report filing | Koppers Holdings Inc. | 05/11/2026 | ||
| 4 | Statement of changes in beneficial owner... | Posadas Laura J | Koppers Holdings Inc. | 05/11/2026 | |
| 4 | Statement of changes in beneficial owner... | Feng Xudong | Koppers Holdings Inc. | 05/11/2026 | |
| 4 | Statement of changes in beneficial owner... | Sandifer Andrew D | Koppers Holdings Inc. | 05/11/2026 | |
| 4 | Statement of changes in beneficial owner... | Jensen Traci L | Koppers Holdings Inc. | 05/11/2026 | |
| 4 | Statement of changes in beneficial owner... | Vartanian Nishan J. | Koppers Holdings Inc. | 05/11/2026 | |
| No record found. | |||||
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