Mark Steven Bender - Feb 18, 2025 Form 4 Insider Report for WESTLAKE CORP (WLK)

Role: EVP & CFO
Signature: Mark Stevan Bender by J Feng POA
Stock symbol: WLK
Transactions as of: Feb 18, 2025
Transactions value $: -$495,773
Form type: 4
Date filed: 2/20/2025, 02:39 PM
Previous filing: Aug 15, 2024
Next filing: Feb 24, 2025

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WLK	Common Stock	Options Exercise	$0	+14K	+33.19%	$0.00	56.1K	Feb 18, 2025	Direct	F1
transaction	WLK	Common Stock	Tax liability	-$475K	-4.26K	-7.6%	$111.46	51.9K	Feb 19, 2025	Direct	F3
transaction	WLK	Common Stock	Tax liability	-$5.62K	-50	-0.1%	$112.46	51.8K	Feb 19, 2025	Direct	F3
transaction	WLK	Common Stock	Tax liability	-$14.9K	-132	-0.25%	$112.76	51.7K	Feb 19, 2025	Direct	F3

Showing 1 to 4 of 4 entries

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	-14K	-100%	$0.00	0	Feb 18, 2025	Common Stock	14K		Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis.
F2	On February 18, 2022, the reporting person was granted 13,987 RSUs vesting on the third anniversay of the grant date.
F3	Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs.