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WESTLAKE CORP (WLK)
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Filings
Date Filed
Type
Description
03/31/2023
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
03/31/2023
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/01/2022
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/01/2022
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/02/2021
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/02/2021
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/03/2020
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/03/2020
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/05/2019
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/05/2019
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/06/2018
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/06/2018
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/07/2017
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/07/2017
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/25/2016
DEFC14A
Form DEFC14A - Definitive proxy statement, contested solicitations
03/31/2016
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
03/31/2016
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/01/2015
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/01/2015
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/01/2015
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/08/2014
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/11/2013
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/16/2012
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/12/2011
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/09/2010
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/08/2009
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/11/2008
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/11/2007
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/03/2006
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/01/2005
DEF 14A
Form DEF 14A - Other definitive proxy statements
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