Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000950170-24-123804
Filing Date
2024-11-08
Accepted
2024-11-08 11:59:33
Documents
85
Period of Report
2024-09-30

Document Format Files

Seq Description Document Type Size
1 10-Q kop-20240930.htm   iXBRL 10-Q 2154502
2 EX-31.1 kop-ex31_1.htm EX-31.1 14325
3 EX-31.2 kop-ex31_2.htm EX-31.2 14086
4 EX-32.1 kop-ex32_1.htm EX-32.1 9570
5 GRAPHIC img66995271_0.jpg GRAPHIC 4847
  Complete submission text file 0000950170-24-123804.txt   10868093

Data Files

Seq Description Document Type Size
6 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT kop-20240930.xsd EX-101.SCH 1535921
88 EXTRACTED XBRL INSTANCE DOCUMENT kop-20240930_htm.xml XML 2270222
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.: 241438933
SIC: 2400 Lumber & Wood Products (No Furniture)
(CF Office: 04 Manufacturing)