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Form DEF 14A - Other definitive proxy statements:
SEC Accession No. 0001193125-22-095129
Filing Date
2022-04-04
Accepted
2022-04-04 16:32:04
Documents
44
Period of Report
2022-05-05

Document Format Files

Seq Description Document Type Size
1 NOTICE & PROXY STATEMENT d231529ddef14a.htm DEF 14A 1500317
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  Complete submission text file 0001193125-22-095129.txt   6446098
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: DEF 14A | Act: 34 | File No.: 001-32737 | Film No.: 22802774
SIC: 2400 Lumber & Wood Products (No Furniture)