Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000950170-25-105595
Filing Date
2025-08-08
Accepted
2025-08-08 11:59:41
Documents
80
Period of Report
2025-06-30

Document Format Files

Seq Description Document Type Size
1 10-Q kop-20250630.htm   iXBRL 10-Q 3039713
2 EX-31.1 kop-ex31_1.htm EX-31.1 15460
3 EX-31.2 kop-ex31_2.htm EX-31.2 15167
4 EX-32.1 kop-ex32_1.htm EX-32.1 11063
5 GRAPHIC img67915909_0.jpg GRAPHIC 126572
  Complete submission text file 0000950170-25-105595.txt   13902637

Data Files

Seq Description Document Type Size
6 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT kop-20250630.xsd EX-101.SCH 1517597
83 EXTRACTED XBRL INSTANCE DOCUMENT kop-20250630_htm.xml XML 3281681
Mailing Address 436 SEVENTH AVENUE PITTSBURGH PA 15219
Business Address 436 SEVENTH AVENUE PITTSBURGH PA 15219 412-227-2001
Koppers Holdings Inc. (Filer) CIK: 0001315257 (see all company filings)

EIN.: 201878963 | State of Incorp.: PA | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-32737 | Film No.: 251197032
SIC: 2400 Lumber & Wood Products (No Furniture)
(CF Office: 04 Manufacturing)