Koppers Holdings Inc. — 3 Filings
54 3 filings on record
This page lists all 3 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 54 3 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 |
|---|---|---|---|---|
| 3 | FORM 3 | 0002092070-25-000002 | Nov 7, 2025 | Nov 5, 2025 |
| 3 | 3 | 0000950170-25-025739 | Feb 24, 2025 | Feb 12, 2025 |
| 3 | 3 | 0000950170-24-015309 | Feb 14, 2024 | Feb 13, 2024 |
| 3 | FORM 3 SUBMISSION | 0001209191-23-020535 | Mar 22, 2023 | Mar 20, 2023 |
| 3 | PRIMARY DOCUMENT | 0001127602-22-017358 | Jun 14, 2022 | Jun 13, 2022 |
| 3 | PRIMARY DOCUMENT | 0001127602-22-011817 | Apr 11, 2022 | — |
| 3 | FORM 3 SUBMISSION | 0001209191-22-016221 | Mar 4, 2022 | Mar 1, 2022 |
| 3 | FORM 3 SUBMISSION | 0001209191-22-000179 | Jan 3, 2022 | Jan 1, 2022 |
| 3 | FORM 3 SUBMISSION | 0001209191-20-018024 | Mar 11, 2020 | Mar 1, 2020 |
| 3 | FORM 3 SUBMISSION | 0001209191-20-009080 | Feb 13, 2020 | Feb 12, 2020 |
| 3 | FORM 3 SUBMISSION | 0001209191-19-028419 | May 9, 2019 | May 2, 2019 |
| 3 | FORM 3 SUBMISSION | 0001209191-18-050697 | Sep 12, 2018 | Sep 10, 2018 |
| 3 | FORM 3 SUBMISSION | 0001209191-18-050426 | Sep 11, 2018 | Sep 10, 2018 |
| 3 | FORM 3 SUBMISSION | 0001209191-18-050422 | Sep 11, 2018 | Sep 10, 2018 |
| 3 | FORM 3 SUBMISSION | 0001209191-18-025554 | Apr 19, 2018 | Apr 10, 2018 |
| 3 | FORM 3 SUBMISSION | 0001209191-17-030910 | May 9, 2017 | May 4, 2017 |
| 3 | FORM 3 SUBMISSION | 0001209191-16-090374 | Jan 7, 2016 | Jan 1, 2016 |
| 3 | FORM 3 - CHRISTIAN A. NIELSEN | 0001181431-15-002504 | Feb 13, 2015 | Feb 4, 2015 |
| 3 | FORM 3 - PAUL A. GOYDAN | 0001181431-14-030228 | Aug 27, 2014 | Aug 15, 2014 |
| 3 | FORM 3 - MICHAEL J. ZUGAY | 0001181431-14-029839 | Aug 21, 2014 | Aug 18, 2014 |
| 3 | FORM 3 - JAMES A. SULLIVAN | 0001181431-14-017389 | May 1, 2014 | Apr 25, 2014 |
| 3 | FORM 3 - LOUIS L TESTONI | 0001181431-13-027219 | May 13, 2013 | May 2, 2013 |
| 3 | FORM 3 - ZHU JIANZHONG | 0001181431-13-010065 | Feb 15, 2013 | Feb 6, 2013 |
| 3 | FORM 3 - JOSEPH P. DOWD | 0001181431-12-040204 | Jul 9, 2012 | Jul 2, 2012 |
| 3 | FORM 3 - DANIEL R. GROVES | 0001181431-11-030279 | May 17, 2011 | May 9, 2011 |
| 3 | FORM 3 - MARKUS G. SPIESS | 0001181431-11-009289 | Feb 11, 2011 | Feb 2, 2011 |
| 3 | FORM 3 - LEROY M. BALL, JR. | 0001181431-10-045104 | Sep 1, 2010 | — |
| 3 | FORM 3 - ALBERT J. NEUPAVER | 0001181431-09-038151 | Aug 6, 2009 | Aug 5, 2009 |
| 3 | FORM 3 - STEPHEN R. TRITCH | 0001181431-09-023724 | May 8, 2009 | May 6, 2009 |
| 3 | FORM 3 - FENG XUDONG | 0001181431-09-023723 | May 8, 2009 | May 6, 2009 |
| 3 | FORM 3 - ROBERT J. HOWARD | 0001181431-09-008810 | Feb 13, 2009 | Feb 4, 2009 |
| 3 | FORM 3 - LOUANN E. TRONSBERG-DEIHLE | 0001181431-08-042866 | Jul 11, 2008 | Jul 7, 2008 |
| 3 | FORM 3 - CYNTHIA A. BALDWIN | 0001181431-08-007410 | Feb 5, 2008 | Feb 1, 2008 |
| 3 | FORM 3 / DONALD EVANS | 0001181431-07-012833 | Feb 20, 2007 | Feb 7, 2007 |
| 3 | FORM 3 - DIETZ | 0001181431-06-067839 | Dec 6, 2006 | Dec 1, 2006 |
| 3 | FORM 3 - MANCIONE | 0001181431-06-067523 | Dec 5, 2006 | Nov 1, 2006 |
| 3 | STALDER - FORM 3 | 0001181431-06-061275 | Nov 2, 2006 | — |
| 3 | FORM 3 - T. MICHAEL YOUNG | 0001181431-06-044372 | Jul 31, 2006 | May 18, 2006 |
| 3 | FORM 3 | 0001140361-06-001292 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001291 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001290 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001289 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001288 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001287 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001286 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001285 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001284 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001283 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001281 | Jan 31, 2006 | — |
| 3 | FORM 3 | 0001140361-06-001280 | Jan 31, 2006 | — |