Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001315257-25-000015
Filing Date
2025-12-17
Accepted
2025-12-17 17:05:26
Documents
1
Period of Report
2025-12-16

Document Format Files

Seq Description Document Type Size
1 FORM 4 wk-form4_1766009124.html 4  
1 FORM 4 wk-form4_1766009124.xml 4 4627
  Complete submission text file 0001315257-25-000015.txt   6021
Mailing Address
Business Address
WILKERSON SONJA MICHELLE (Reporting) CIK: 0001245155 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-32737 | Film No.: 251580084

Mailing Address 436 SEVENTH AVENUE PITTSBURGH PA 15219
Business Address 436 SEVENTH AVENUE PITTSBURGH PA 15219 412-227-2001
Koppers Holdings Inc. (Issuer) CIK: 0001315257 (see all company filings)

EIN.: 201878963 | State of Incorp.: PA | Fiscal Year End: 1231
SIC: 2400 Lumber & Wood Products (No Furniture)
(CF Office: 04 Manufacturing)