Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000950170-25-068045
Filing Date
2025-05-09
Accepted
2025-05-09 16:16:21
Documents
1
Period of Report
2025-05-08

Document Format Files

Seq Description Document Type Size
1 4 ownership.html 4  
1 4 ownership.xml 4 3031
  Complete submission text file 0000950170-25-068045.txt   4402
Mailing Address
Business Address
NEUPAVER ALBERT J (Reporting) CIK: 0001190210 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-32737 | Film No.: 25930649

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)