Koppers Holdings Inc. — SC 13G/A Filings
83 SC 13G/A filings on record
This page lists all SC 13G/A 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 83 SC 13G/A 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 |
|---|---|---|---|---|
| SC 13G/A | — | 0002012383-24-004028 | Nov 8, 2024 | — |
| SC 13G/A | — | 0002012383-24-000633 | Oct 18, 2024 | — |
| SC 13G/A | — | 0001082327-24-000071 | Oct 7, 2024 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-24-021302 | Feb 13, 2024 | — |
| SC 13G/A | SC 13G/A | 0001104659-24-013555 | Feb 12, 2024 | — |
| SC 13G/A | — | 0001082327-24-000040 | Feb 12, 2024 | — |
| SC 13G/A | — | 0001086364-24-000777 | Jan 22, 2024 | — |
| SC 13G/A | — | 0001082327-23-000037 | Feb 14, 2023 | — |
| SC 13G/A | SC 13G/A | 0001104659-23-018472 | Feb 10, 2023 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-23-016311 | Feb 9, 2023 | — |
| SC 13G/A | — | 0001306550-23-004141 | Jan 26, 2023 | — |
| SC 13G/A | — | 0001082327-22-000034 | Mar 2, 2022 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-22-017924 | Feb 10, 2022 | — |
| SC 13G/A | — | 0001082327-22-000027 | Feb 8, 2022 | — |
| SC 13G/A | — | 0000834237-22-003221 | Jan 28, 2022 | — |
| SC 13G/A | — | 0001082327-21-000027 | Feb 11, 2021 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-21-018461 | Feb 10, 2021 | — |
| SC 13G/A | — | 0000834237-21-001270 | Jan 26, 2021 | — |
| SC 13G/A | — | 0001082327-20-000020 | Feb 14, 2020 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-20-017244 | Feb 12, 2020 | — |
| SC 13G/A | — | 0000834237-20-002279 | Feb 4, 2020 | — |
| SC 13G/A | DIVISION OF INVESTMENT, DEPARTMENT OF THE TREASURY,STATE OF NEW JERSEY | 0001085146-19-002431 | Sep 26, 2019 | — |
| SC 13G/A | SC 13G/A | 0001082327-19-000014 | Feb 14, 2019 | — |
| SC 13G/A | — | 0000215457-19-002182 | Jan 31, 2019 | — |
| SC 13G/A | DIVISION OF INVESTMENT, DEPARTMENT OF THE TREASURY,STATE OF NEW JERSEY | 0001085146-19-000277 | Jan 31, 2019 | — |
| SC 13G/A | — | 0000932471-19-001299 | Jan 10, 2019 | — |
| SC 13G/A | — | 0001082327-18-000016 | Feb 14, 2018 | — |
| SC 13G/A | SC 13G/A | 0001193125-18-039136 | Feb 12, 2018 | — |
| SC 13G/A | — | 0000932471-18-003678 | Feb 9, 2018 | — |
| SC 13G/A | — | 0000215457-18-001565 | Jan 19, 2018 | — |
| SC 13G/A | — | 0001082327-17-000045 | Feb 23, 2017 | — |
| SC 13G/A | — | 0000932471-17-001319 | Feb 10, 2017 | — |
| SC 13G/A | SC 13G/A | 0001193125-17-037775 | Feb 10, 2017 | — |
| SC 13G/A | — | 0000215457-17-000503 | Jan 12, 2017 | — |
| SC 13G/A | — | 0000215457-16-006300 | Jun 9, 2016 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000902219-16-000883 | Feb 11, 2016 | — |
| SC 13G/A | — | 0000932471-16-010571 | Feb 10, 2016 | — |
| SC 13G/A | — | 0000932471-16-010547 | Feb 10, 2016 | — |
| SC 13G/A | KOP AS OF 12/31/2015 | 0000080255-16-000762 | Feb 9, 2016 | — |
| SC 13G/A | — | 0000215457-16-003225 | Jan 26, 2016 | — |
| SC 13G/A | KOP AS OF 12/31/2014 | 0000080255-15-000533 | Feb 13, 2015 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000902219-15-000270 | Feb 12, 2015 | — |
| SC 13G/A | — | 0000932471-15-004263 | Feb 10, 2015 | — |
| SC 13G/A | — | 0001086364-15-000519 | Jan 22, 2015 | — |
| SC 13G/A | — | 0000932471-14-003619 | Feb 11, 2014 | — |
| SC 13G/A | KOP AS OF 01/31/2014 | 0000080255-14-000070 | Feb 10, 2014 | — |
| SC 13G/A | KOP AS OF 12/31/2013 | 0000080255-14-000058 | Feb 7, 2014 | — |
| SC 13G/A | — | 0001086364-14-001109 | Jan 29, 2014 | — |
| SC 13G/A | — | 0000930413-13-003324 | Jun 10, 2013 | — |
| SC 13G/A | — | 0000930413-13-000824 | Feb 14, 2013 | — |