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Koppers Holdings Inc.

4/A 72 filings

All 4/A Filings

Complete history of 4/A filings with the SEC

Date Filed View on EDGAR
03 Mar
Mar 03, 2026
open_in_new View Filing
11 Mar
Mar 11, 2025
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17 Feb
Feb 17, 2022
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17 Feb
Feb 17, 2022
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17 Feb
Feb 17, 2022
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17 Feb
Feb 17, 2022
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17 Feb
Feb 17, 2022
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17 Feb
Feb 17, 2022
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17 Feb
Feb 17, 2022
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17 Feb
Feb 17, 2022
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18 Feb
Feb 18, 2021
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09 Mar
Mar 09, 2020
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05 Mar
Mar 05, 2020
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05 Mar
Mar 05, 2020
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05 Mar
Mar 05, 2020
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05 Mar
Mar 05, 2020
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05 Mar
Mar 05, 2020
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05 Mar
Mar 05, 2020
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18 Feb
Feb 18, 2020
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18 Feb
Feb 18, 2020
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18 Feb
Feb 18, 2020
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18 Feb
Feb 18, 2020
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18 Feb
Feb 18, 2020
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18 Feb
Feb 18, 2020
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18 Feb
Feb 18, 2020
open_in_new View Filing
18 Feb
Feb 18, 2020
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08 Mar
Mar 08, 2017
open_in_new View Filing
14 Mar
Mar 14, 2016
open_in_new View Filing
07 Mar
Mar 07, 2016
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09 Apr
Apr 09, 2015
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12 Mar
Mar 12, 2015
open_in_new View Filing
05 Mar
Mar 05, 2014
open_in_new View Filing
04 Mar
Mar 04, 2014
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27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
open_in_new View Filing
27 Mar
Mar 27, 2013
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25 Mar
Mar 25, 2013
open_in_new View Filing
25 Mar
Mar 25, 2013
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25 Mar
Mar 25, 2013
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25 Mar
Mar 25, 2013
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25 Mar
Mar 25, 2013
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25 Mar
Mar 25, 2013
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25 Mar
Mar 25, 2013
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25 Mar
Mar 25, 2013
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25 Mar
Mar 25, 2013
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25 Mar
Mar 25, 2013
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25 Mar
Mar 25, 2013
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25 Mar
Mar 25, 2013
open_in_new View Filing
07 Mar
Mar 07, 2013
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28 Feb
Feb 28, 2013
open_in_new View Filing
10 Nov
Nov 10, 2010
open_in_new View Filing
23 Mar
Mar 23, 2009
open_in_new View Filing
23 Mar
Mar 23, 2009
open_in_new View Filing
23 Mar
Mar 23, 2009
open_in_new View Filing
23 Mar
Mar 23, 2009
open_in_new View Filing
28 Jan
Jan 28, 2009
open_in_new View Filing
22 May
May 22, 2008
open_in_new View Filing
14 May
May 14, 2008
open_in_new View Filing
05 Mar
Mar 05, 2008
open_in_new View Filing
12 Feb
Feb 12, 2007
open_in_new View Filing
01 Dec
Dec 01, 2006
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18 Sep
Sep 18, 2006
open_in_new View Filing
18 Sep
Sep 18, 2006
open_in_new View Filing