SEC Filings

Search SEC EDGAR filings by company ticker and form type

Koppers Holdings Inc.

3 55 filings

All 3 Filings

Complete history of 3 filings with the SEC

Date Filed	View on EDGAR
27 May May 27, 2026	open_in_new View Filing
07 Nov Nov 07, 2025	open_in_new View Filing
24 Feb Feb 24, 2025	open_in_new View Filing
14 Feb Feb 14, 2024	open_in_new View Filing
22 Mar Mar 22, 2023	open_in_new View Filing
14 Jun Jun 14, 2022	open_in_new View Filing
11 Apr Apr 11, 2022	open_in_new View Filing
04 Mar Mar 04, 2022	open_in_new View Filing
03 Jan Jan 03, 2022	open_in_new View Filing
11 Mar Mar 11, 2020	open_in_new View Filing
13 Feb Feb 13, 2020	open_in_new View Filing
09 May May 09, 2019	open_in_new View Filing
12 Sep Sep 12, 2018	open_in_new View Filing
11 Sep Sep 11, 2018	open_in_new View Filing
11 Sep Sep 11, 2018	open_in_new View Filing
19 Apr Apr 19, 2018	open_in_new View Filing
09 May May 09, 2017	open_in_new View Filing
07 Jan Jan 07, 2016	open_in_new View Filing
13 Feb Feb 13, 2015	open_in_new View Filing
27 Aug Aug 27, 2014	open_in_new View Filing
21 Aug Aug 21, 2014	open_in_new View Filing
01 May May 01, 2014	open_in_new View Filing
13 May May 13, 2013	open_in_new View Filing
15 Feb Feb 15, 2013	open_in_new View Filing
09 Jul Jul 09, 2012	open_in_new View Filing
17 May May 17, 2011	open_in_new View Filing
11 Feb Feb 11, 2011	open_in_new View Filing
01 Sep Sep 01, 2010	open_in_new View Filing
06 Aug Aug 06, 2009	open_in_new View Filing
08 May May 08, 2009	open_in_new View Filing
08 May May 08, 2009	open_in_new View Filing
13 Feb Feb 13, 2009	open_in_new View Filing
11 Jul Jul 11, 2008	open_in_new View Filing
05 Feb Feb 05, 2008	open_in_new View Filing
20 Feb Feb 20, 2007	open_in_new View Filing
06 Dec Dec 06, 2006	open_in_new View Filing
05 Dec Dec 05, 2006	open_in_new View Filing
02 Nov Nov 02, 2006	open_in_new View Filing
31 Jul Jul 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing
31 Jan Jan 31, 2006	open_in_new View Filing