Albert Chao - 14 Feb 2023 Form 4 Insider Report for WESTLAKE CORP (WLK)

Role: President & CEO, Director, 10%+ Owner
Signature: Albert Chao by J. Feng POA
Issuer symbol: WLK
Transactions as of: 14 Feb 2023
Net transactions value: -$1,116,206
Form type: 4
Filing time: 16 Feb 2023, 10:39:05 UTC
Previous filing: 23 May 2022
Next filing: 21 Feb 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WLK	Common Stock	Options Exercise		+26,048	+5.5%		499,031	14 Feb 2023	Direct	F1
transaction	WLK	Common Stock	Tax liability	$1,100,640	-9,032	-1.8%	$121.86	489,999	15 Feb 2023	Direct	F2
transaction	WLK	Common Stock	Tax liability	$15,566	-127	-0.03%	$122.57	489,872	15 Feb 2023	Direct	F2
holding	WLK	Common Stock						93,405,554	14 Feb 2023	TTWF LP & TTWF GP LLC	F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	WLK	Restricted Stock Units	Options Exercise	$0	-26,048	-100%	$0.000000^*	0	14 Feb 2023	Common Stock	26,048		Direct	F1, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Restricted stock units convert into Issuer's shares of common stock on a one-for-one basis.
F2	Shares otherwise issuable were withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.
F3	On February 14, 2020, the reporting person was granted 26,048 restricted stock units vesting on the third anniversary of the grant date.
F4	93,405,554 shares of Issuer are held through TTWF LP, a Delaware limited partnership, and TTWF GP LLC, a Delaware limited liability company and the general partner of TTWF LP. Two trusts for the benefit of members of the Chao family, including the reporting person, are the managers of TTWFGP LLC. The limited partners of TTWF LP are five trusts, principally for the benefit of members of the Chao family, including the reporting person, and two corporations owned, indirectly or directly, by certain of these trusts and by other entities owned by members of the Chao family, including the reporting person. The reporting person shares investment and voting power with respect to the shares beneficially owned by TTWF LP and TTWFGP LLC. The reporting person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.