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.
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 | — |