Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000950170-25-064578
Filing Date
2025-05-06
Accepted
2025-05-06 16:50:47
Documents
1
Period of Report
2025-05-02

Document Format Files

Seq Description Document Type Size
1 4 ownership.html 4  
1 4 ownership.xml 4 5447
  Complete submission text file 0000950170-25-064578.txt   6935
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)

Mailing Address 1000 CRANBERRY WOODS DRIVE CRANBERRY TOWNSHIP PA 16066
Business Address
Vartanian Nishan J. (Reporting) CIK: 0001564614 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-32737 | Film No.: 25918023