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Form 144 - Report of proposed sale of securities:
SEC Accession No. 0001959173-23-001591
Filing Date
2023-06-06
Accepted
2023-06-06 14:59:56
Documents
1

Document Format Files

Seq Description Document Type Size
1 primary_doc.html 144  
1 primary_doc.xml 144 3366
  Complete submission text file 0001959173-23-001591.txt   4782
Mailing Address 436 SEVENTH AVENUE PITTSBURGH PA 15219
Business Address 436 SEVENTH AVENUE PITTSBURGH PA 15219 412-227-2001
Koppers Holdings Inc. (Subject) CIK: 0001315257 (see all company filings)

IRS No.: 201878963 | State of Incorp.: PA | Fiscal Year End: 1231
Type: 144 | Act: 33 | File No.: 001-32737 | Film No.: 23995807
SIC: 2400 Lumber & Wood Products (No Furniture)

Mailing Address 436 SEVENTH AVENUE SUITE 1550 PITTSBURGH PA 15219
Business Address
Dowd Joseph P (Reporting) CIK: 0001553647 (see all company filings)

Type: 144