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WESTLAKE CORP — 10-K Filings

23 10-K filings on record

This page lists all 10-K filings submitted to the SEC by WESTLAKE CORP (WLK), sorted by most recent first. Each row links to the full filing on EdgarLookup. WESTLAKE CORP has filed 23 10-K documents with the SEC since 2014. To view all SEC filings by WESTLAKE CORP, see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-Q 144 3 3/A 4 4/A 424B4 424B5 425 8-A12B 8-K 8-K/A ARS CERT CORRESP DEF 14A DEFA14A DEFC14A DFAN14A DFRN14A EFFECT FWP POS AM POSASR PRE 14A PREC14A PRRN14A PX14A6G S-1 S-1/A S-3 S-3/A S-3ASR S-4 S-4/A S-8 SC 13G SC 13G/A SC TO-C SD UPLOAD
Form Description Accession Number Filed Period
10-K 10-K 0001262823-26-000016 Feb 26, 2026 Dec 31, 2025
10-K 10-K 0001262823-25-000011 Feb 25, 2025 Dec 31, 2024
10-K 10-K 0001262823-24-000014 Feb 22, 2024 Dec 31, 2023
10-K 10-K 0001262823-23-000011 Feb 22, 2023 Dec 31, 2022
10-K 10-K 0001262823-22-000014 Feb 23, 2022 Dec 31, 2021
10-K 10-K 0001262823-21-000023 Feb 24, 2021 Dec 31, 2020
10-K 10-K 0001262823-20-000007 Feb 19, 2020 Dec 31, 2019
10-K 10-K 0001262823-19-000012 Feb 20, 2019 Dec 31, 2018
10-K 10-K 0001262823-18-000008 Feb 21, 2018 Dec 31, 2017
10-K 10-K 0001262823-17-000008 Feb 22, 2017 Dec 31, 2016
10-K 10-K 0001262823-16-000030 Feb 24, 2016 Dec 31, 2015
10-K 10-K 0001262823-15-000007 Feb 25, 2015 Dec 31, 2014
10-K 10-K 0001262823-14-000007 Feb 21, 2014 Dec 31, 2013
10-K 10-K 0001262823-13-000007 Feb 22, 2013 Dec 31, 2012
10-K FORM 10-K 0001193125-12-075023 Feb 23, 2012 Dec 31, 2011
10-K FROM 10-K FOR FISCAL YEAR ENDED DECEMBER 31, 2010 0001193125-11-045471 Feb 24, 2011 Dec 31, 2010
10-K FORM 10-K FOR FISCAL YEAR ENDED DECEMBER 31, 2009 0001193125-10-038369 Feb 24, 2010 Dec 31, 2009
10-K FORM 10-K FOR FISCAL YEAR ENDED DECEMBER 31, 2008 0001193125-09-032921 Feb 19, 2009 Dec 31, 2008
10-K FORM 10-K FOR THE FISCAL YEAR ENDED DECEMBER 31, 2007 0001193125-08-034397 Feb 20, 2008 Dec 31, 2007
10-K FORM 10-K FOR THE FISCAL YEAR ENDED DECEMBER 31, 2006 0001193125-07-039877 Feb 26, 2007 Dec 31, 2006
10-K FORM 10-K FOR YEAR ENDED DECEMBER 31, 2005 0001193125-06-037475 Feb 23, 2006 Dec 31, 2005
10-K FORM 10-K 0001193125-05-052548 Mar 16, 2005 Dec 31, 2004
10-K WESTLAKE CHEMICAL CORPORATION - DECEMBER 31, 2003 0000950129-04-001565 Mar 26, 2004 Dec 31, 2003