Form 8-K - Current report:
SEC Accession No. 0000950170-25-087681
Filing Date
2025-06-18
Accepted
2025-06-18 08:01:07
Documents
13
Period of Report
2025-06-17
Items
Item 1.01: Entry into a Material Definitive Agreement
Item 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K kop-20250617.htm   iXBRL 8-K 50649
2 EX-10.1 kop-ex10_1.htm EX-10.1 2853864
3 EX-99.1 kop-ex99_1.htm EX-99.1 22627
4 GRAPHIC img180885081_0.jpg GRAPHIC 16346
  Complete submission text file 0000950170-25-087681.txt   3439741

Data Files

Seq Description Document Type Size
5 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT kop-20250617.xsd EX-101.SCH 25026
15 EXTRACTED XBRL INSTANCE DOCUMENT kop-20250617_htm.xml XML 4718
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: 8-K | Act: 34 | File No.: 001-32737 | Film No.: 251055158
SIC: 2400 Lumber & Wood Products (No Furniture)
(CF Office: 04 Manufacturing)