Form 8-K/A - Current report: [Amend]
SEC Accession No. 0000950170-23-017934
Filing Date
2023-05-04
Accepted
2023-05-04 16:32:12
Documents
12
Period of Report
2023-05-04
Items
Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K/A kop-20230504.htm   iXBRL 8-K/A 53896
  Complete submission text file 0000950170-23-017934.txt   173790

Data Files

Seq Description Document Type Size
2 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT kop-20230504.xsd EX-101.SCH 2463
3 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT kop-20230504_lab.xml EX-101.LAB 13992
4 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT kop-20230504_pre.xml EX-101.PRE 10272
6 EXTRACTED XBRL INSTANCE DOCUMENT kop-20230504_htm.xml XML 4859
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)

IRS No.: 201878963 | State of Incorp.: PA | Fiscal Year End: 1231
Type: 8-K/A | Act: 34 | File No.: 001-32737 | Film No.: 23889339
SIC: 2400 Lumber & Wood Products (No Furniture)