Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000950170-25-028542
Filing Date
2025-02-27
Accepted
2025-02-27 11:53:11
Documents
129
Period of Report
2024-12-31

Document Format Files

Seq Description Document Type Size
1 10-K kop-20241231.htm   iXBRL 10-K 4781070
2 EX-4.1 kop-ex4_1.htm EX-4.1 32474
3 EX-10.49 kop-ex10_49.htm EX-10.49 144871
4 EX-10.50 kop-ex10_50.htm EX-10.50 173506
5 EX-10.51 kop-ex10_51.htm EX-10.51 174955
6 EX-10.52 kop-ex10_52.htm EX-10.52 140151
7 EX-10.53 kop-ex10_53.htm EX-10.53 178270
8 EX-10.54 kop-ex10_54.htm EX-10.54 12391
9 EX-19 kop-ex19.htm EX-19 82797
10 EX-21 kop-ex21.htm EX-21 63394
11 EX-23.1 kop-ex23_1.htm EX-23.1 3863
12 EX-24 kop-ex24.htm EX-24 91861
13 EX-31.1 kop-ex31_1.htm EX-31.1 13725
14 EX-31.2 kop-ex31_2.htm EX-31.2 13862
15 EX-32.1 kop-ex32_1.htm EX-32.1 16715
16 GRAPHIC img205131550_0.jpg GRAPHIC 109766
17 GRAPHIC gfx86789039_0.jpg GRAPHIC 633
  Complete submission text file 0000950170-25-028542.txt   23245689

Data Files

Seq Description Document Type Size
18 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT kop-20241231.xsd EX-101.SCH 2418690
132 EXTRACTED XBRL INSTANCE DOCUMENT kop-20241231_htm.xml XML 5324245
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-K | Act: 34 | File No.: 001-32737 | Film No.: 25675601
SIC: 2400 Lumber & Wood Products (No Furniture)
(CF Office: 04 Manufacturing)