Filing

Form 4

Form 4

0001315257-26-000052·Koppers Holdings Inc.

Filing metadata

Accession number: 0001315257-26-000052
Form type: Form 4
Filer: Koppers Holdings Inc.
CIK: CIK 1315257
Filed: Sep 15, 2026
Reporting period: Sep 14, 2026
Description: Insider transaction

Documents

0001315257-26-000052-index.htm

Complete submission

0001315257-26-000052.txt

directory listing

Filed by

Koppers Holdings Inc.