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 | — | 0000932471-13-003092 | Feb 11, 2013 | — |
| SC 13G/A | — | 0001086364-13-003330 | Feb 8, 2013 | — |
| SC 13G/A | KOP AS OF 12/31/12 | 0000080255-13-000146 | Feb 7, 2013 | — |
| SC 13G/A | — | 0000930413-13-000128 | Jan 10, 2013 | — |
| SC 13G/A | — | 0000930413-12-003916 | Jul 10, 2012 | — |
| SC 13G/A | — | 0000930413-12-000841 | Feb 14, 2012 | — |
| SC 13G/A | — | 0000930413-12-000798 | Feb 14, 2012 | — |
| SC 13G/A | — | 0001086364-12-002121 | Feb 13, 2012 | — |
| SC 13G/A | KOP AS OF 12/31/11 | 0000080255-12-000193 | Feb 10, 2012 | — |
| SC 13G/A | — | 0000897069-12-000109 | Feb 7, 2012 | — |
| SC 13G/A | KOPPERS HOLDINGS, INC. | 0001193125-11-034305 | Feb 14, 2011 | — |
| SC 13G/A | KOP AS OF 12/31/2010 | 0000080255-11-000021 | Feb 9, 2011 | — |
| SC 13G/A | — | 0000932471-11-000987 | Feb 9, 2011 | — |
| SC 13G/A | — | 0000897069-11-000105 | Feb 7, 2011 | — |
| SC 13G/A | KOPPERS HOLDINGS, INC. | 0001193125-11-004551 | Jan 10, 2011 | — |
| SC 13G/A | — | 0001086364-10-009123 | Apr 9, 2010 | — |
| SC 13G/A | KOPPERS HOLDINGS, INC. | 0001193125-10-029719 | Feb 12, 2010 | — |
| SC 13G/A | KOP AS OF 12/31/2009 | 0000080255-10-000407 | Feb 12, 2010 | — |
| SC 13G/A | AMENDMENT NO. 2 | 0000897069-10-000162 | Feb 12, 2010 | — |
| SC 13G/A | AMENDMENT NO. 1 | 0000897069-09-000425 | Feb 13, 2009 | — |
| SC 13G/A | SC 13G/A | 0001104659-09-009401 | Feb 13, 2009 | — |
| SC 13G/A | KOP AS OF 12/31/08 | 0000080255-09-000383 | Feb 12, 2009 | — |
| SC 13G/A | SC 13G/A | 0001104659-09-001568 | Jan 9, 2009 | — |
| SC 13G/A | KOP AS OF 8/31/08 | 0000080255-08-000545 | Sep 10, 2008 | — |
| SC 13G/A | KOPPERS HOLDINGS INC. | 0000902664-08-001841 | Apr 28, 2008 | — |
| SC 13G/A | SC 13G/A | 0001104659-08-010092 | Feb 14, 2008 | — |
| SC 13G/A | KOPPERS HOLDINGS INC. - SARATOGA PARTNERS III, L.P. SCHEDULE 13G/A - 02/14/08 | 0000950162-08-000104 | Feb 14, 2008 | — |
| SC 13G/A | SC 13G/A - - KOPPERS HOLDINGS INC. | 0000872573-08-000010 | Feb 13, 2008 | — |
| SC 13G/A | KOPPERS HOLDINGS INC. | 0000902664-08-000289 | Jan 25, 2008 | — |
| SC 13G/A | KOPPERS HOLDINGS, INC./SARATOGA PARTNERS III, L.P. - SCHEDULE 13G/A - 02/26/07 | 0000950162-07-000147 | Mar 13, 2007 | — |
| SC 13G/A | SC 13G/A - - KOPPERS HOLDINGS, INC. | 0000872573-07-000023 | Feb 14, 2007 | — |
| SC 13G/A | KOPPERS HOLDINGS INC. | 0000902664-07-000113 | Jan 17, 2007 | — |
| SC 13G/A | SC 13G/A - KOPPERS AMEND #1 | 0000872573-06-000051 | Jul 31, 2006 | — |