0000950170-23-071910.txt : 20231220 0000950170-23-071910.hdr.sgml : 20231220 20231220164147 ACCESSION NUMBER: 0000950170-23-071910 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20231220 FILED AS OF DATE: 20231220 DATE AS OF CHANGE: 20231220 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Pearce Bradley A CENTRAL INDEX KEY: 0001776180 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-32737 FILM NUMBER: 231501804 MAIL ADDRESS: STREET 1: 436 SEVENTH AVENUE CITY: PITTSBURGH STATE: PA ZIP: 15219 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Koppers Holdings Inc. CENTRAL INDEX KEY: 0001315257 STANDARD INDUSTRIAL CLASSIFICATION: LUMBER & WOOD PRODUCTS (NO FURNITURE) [2400] ORGANIZATION NAME: 04 Manufacturing IRS NUMBER: 201878963 STATE OF INCORPORATION: PA FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 436 SEVENTH AVENUE CITY: PITTSBURGH STATE: PA ZIP: 15219 BUSINESS PHONE: 412-227-2001 MAIL ADDRESS: STREET 1: 436 SEVENTH AVENUE CITY: PITTSBURGH STATE: PA ZIP: 15219 FORMER COMPANY: FORMER CONFORMED NAME: KI Holdings Inc. DATE OF NAME CHANGE: 20050124 4 1 ownership.xml 4 X0508 4 2023-12-20 0001315257 Koppers Holdings Inc. KOP 0001776180 Pearce Bradley A 436 SEVENTH AVENUE PITTSBURGH PA 15219 false true false false Chief Accounting Officer false Common Stock 2023-12-20 4 S false 1000 49.824 D 28128 D /s/Stephanie L. Apostolou, Attorney-in-Fact 2023-12-20