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Koppers Holdings Inc. — S-8 Filings

10 S-8 filings on record

This page lists all S-8 filings submitted to the SEC by Koppers Holdings Inc. (KOP), sorted by most recent first. Each row links to the full filing on EdgarLookup. Koppers Holdings Inc. has filed 10 S-8 documents with the SEC since 2015. To view all SEC filings by Koppers Holdings Inc., see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-Q 144 144/A 3 3/A 4 4/A 424B1 424B3 5 5/A 8-A12B 8-K 8-K/A ARS CERTNYS CORRESP DEF 14A DEFA14A EFFECT POS AM POSASR PRE 14A S-1 S-1/A S-3 S-3/A S-3ASR S-4 S-4/A S-8 SC 13G SC 13G/A SCHEDULE 13G SCHEDULE 13G/A UPLOAD
Form Description Accession Number Filed Period
S-8 S-8 0000950170-25-067492 May 9, 2025
S-8 S-8 0001193125-21-238318 Aug 6, 2021
S-8 S-8 0001193125-21-154311 May 7, 2021
S-8 S-8 0001193125-21-154308 May 7, 2021
S-8 FORM S-8 0001193125-20-134947 May 6, 2020
S-8 S-8 0001564590-18-010741 May 3, 2018
S-8 S-8 0001564590-17-015312 Aug 3, 2017
S-8 S-8 0001564590-16-020480 Jun 10, 2016
S-8 S-8 0001193125-14-409324 Nov 12, 2014
S-8 FORM S-8 0001193125-06-139294 Jun 29, 2006