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Filing Detail
Form 8-K/A - Current report: [Amend]
SEC Accession No. 0000950170-24-052134
Filing Date
2024-05-02
Accepted
2024-05-02 16:15:11
Documents
11
Period of Report
2024-05-02
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-20240502.htm   iXBRL 8-K/A 39663
  Complete submission text file 0000950170-24-052134.txt   156086

Data Files

Seq Description Document Type Size
2 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT kop-20240502.xsd EX-101.SCH 25948
14 EXTRACTED XBRL INSTANCE DOCUMENT kop-20240502_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.: 24908458
SIC: 2400 Lumber & Wood Products (No Furniture)
(CF Office: 04 Manufacturing)