Koppers Holdings Inc. — 8-K Filings
191 8-K filings on record
This page lists all 8-K 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 191 8-K 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 |
|---|---|---|---|---|
| 8-K | 8-K | 0001564590-20-033467 | Jul 27, 2020 | — |
| 8-K | 8-K | 0001564590-20-029588 | Jun 17, 2020 | — |
| 8-K | 8-K | 0001564590-20-026255 | May 20, 2020 | — |
| 8-K | 8-K | 0001564590-20-022406 | May 7, 2020 | May 6, 2020 |
| 8-K | 8-K | 0001564590-20-018697 | Apr 27, 2020 | — |
| 8-K | 8-K | 0001564590-20-007040 | Feb 27, 2020 | — |
| 8-K | 8-K | 0001193125-20-051092 | Feb 27, 2020 | Feb 26, 2020 |
| 8-K | 8-K | 0001564590-20-004951 | Feb 18, 2020 | — |
| 8-K | 8-K | 0001564590-20-004949 | Feb 18, 2020 | — |
| 8-K | 8-K SULLIVAN ANNOUNCEMENT | 0001564590-20-000256 | Jan 6, 2020 | Jan 1, 2020 |
| 8-K | 8-K | 0001564590-19-041392 | Nov 7, 2019 | — |
| 8-K | 8-K | 0001564590-19-030449 | Aug 8, 2019 | — |
| 8-K | KOP 8-K | 0001564590-19-015518 | May 3, 2019 | — |
| 8-K | 8-K | 0001564590-19-005669 | Mar 1, 2019 | — |
| 8-K | 8-K | 0001564590-18-030127 | Nov 27, 2018 | — |
| 8-K | 8-K | 0001564590-18-028332 | Nov 8, 2018 | — |
| 8-K | HILLENBRAND_TRITCH | 0001564590-18-024375 | Oct 17, 2018 | Oct 11, 2018 |
| 8-K | 8-K | 0001564590-18-022926 | Sep 11, 2018 | Sep 10, 2018 |
| 8-K | 8-K | 0001564590-18-020785 | Aug 9, 2018 | — |
| 8-K | 8-K | 0001564590-18-010516 | May 3, 2018 | — |
| 8-K | CREDIT AGREEMENT AMENDMENT AND MERGER | 0001564590-18-008136 | Apr 13, 2018 | Apr 10, 2018 |
| 8-K | 8-K | 0001564590-18-003410 | Feb 27, 2018 | — |
| 8-K | 8-K | 0001564590-17-023011 | Nov 9, 2017 | — |
| 8-K | 8-K | 0001564590-17-015138 | Aug 3, 2017 | — |
| 8-K | FORM 8-K | 0001564590-17-008958 | May 5, 2017 | May 4, 2017 |
| 8-K | FORM 8-K | 0001564590-17-002112 | Feb 23, 2017 | — |
| 8-K | 8-K | 0001564590-17-001950 | Feb 22, 2017 | Feb 17, 2017 |
| 8-K | FORM 8-K | 0001193125-17-018082 | Jan 25, 2017 | — |
| 8-K | FORM 8-K | 0001193125-17-013741 | Jan 20, 2017 | Jan 19, 2017 |
| 8-K | FORM 8-K | 0001193125-17-013738 | Jan 20, 2017 | Jan 19, 2017 |
| 8-K | FORM 8-K | 0001193125-17-009357 | Jan 13, 2017 | — |
| 8-K | FORM 8-K | 0001193125-17-006368 | Jan 10, 2017 | — |
| 8-K | FORM 8-K | 0001193125-17-002404 | Jan 5, 2017 | — |
| 8-K | FORM 8-K | 0001193125-16-792515 | Dec 14, 2016 | — |
| 8-K | FORM 8-K | 0001564590-16-027199 | Nov 3, 2016 | — |
| 8-K | FORM 8-K | 0001564590-16-022533 | Aug 4, 2016 | — |
| 8-K | 8-K | 0001564590-16-018168 | May 6, 2016 | May 5, 2016 |
| 8-K | 8-K | 0001564590-16-016208 | Apr 14, 2016 | Apr 8, 2016 |
| 8-K | 8-K | 0001564590-16-015518 | Mar 29, 2016 | Mar 23, 2016 |
| 8-K | FORM 8-K | 0001193125-16-482140 | Feb 26, 2016 | Feb 25, 2016 |
| 8-K | 8-K | 0001564590-16-013313 | Feb 25, 2016 | — |
| 8-K | 8-K | 0001564590-16-012969 | Feb 22, 2016 | Feb 16, 2016 |
| 8-K | 8-K | 0001564590-16-011861 | Jan 13, 2016 | Jan 11, 2016 |
| 8-K | FORM 8-K | 0001193125-15-377080 | Nov 13, 2015 | Nov 9, 2015 |
| 8-K | FORM 8-K | 0001193125-15-367512 | Nov 5, 2015 | — |
| 8-K | FORM 8-K | 0001193125-15-280231 | Aug 6, 2015 | — |
| 8-K | FORM 8-K | 0001193125-15-178690 | May 8, 2015 | May 7, 2015 |
| 8-K | FORM 8-K | 0001193125-15-064554 | Feb 26, 2015 | — |
| 8-K | FORM 8-K | 0001193125-15-036856 | Feb 6, 2015 | Feb 4, 2015 |
| 8-K | FORM 8-K | 0001193125-15-016944 | Jan 22, 2015 | — |