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Filing
Form 4
Form 4
0001315257-25-000015
·
Koppers Holdings Inc.
Filer
Filing index
Filing metadata
Accession number
0001315257-25-000015
Form type
Form 4
Filer
Koppers Holdings Inc.
CIK
CIK 1315257
Filed
Dec 17, 2025
Reporting period
Dec 16, 2025
Description
Insider transaction
Documents
Filing index
0001315257-25-000015-index.htm
Complete submission
0001315257-25-000015.txt
All documents
directory listing
Filed by
Koppers Holdings Inc.
CIK 1315257
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