John Tsung-Chen Chao - 05 Mar 2025 Form 4/A - Amendment Insider Report for WESTLAKE CORP (WLK)

Role: Director
Signature: John T. Chao by J. Feng, POA
Issuer symbol: WLK
Transactions as of: 05 Mar 2025
Net transactions value: -$42,470
Form type: 4/A - Amendment
Filing time: 07 Mar 2025, 07:00:04 UTC
Date Of Original Report: 24 Feb 2025
Previous filing: 24 Feb 2025
Next filing: 19 Feb 2026
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WLK	Common Stock	Award	$0	+955	+14%	$0.000000	7,664	20 Feb 2025	Direct
transaction	WLK	Common Stock	Tax liability	$42,470	-391	-5.3%	$108.62	7,038	05 Mar 2025	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	The original Form 4 filed by the Reporting Person on February 24, 2025 is amended by this Form 4A to disclose that 391 shares of common stock were sold to cover tax withholding obligations arising out of the vesting of the Reporting Person's Performace Stock Units. The original Form 4 did not report the sale to cover tax withholding obligations because the number of shares to be sold was not known at the time of filing. This Form 4A is in addition to, and does not replace, the disclosure contained in the original Form 4
F2	The amount of common stock beneficially owned by the Reporting Person reflects adjustments for subsquent transactions reported on Form4A filed March 6, 2025, reflects the total owned subsquent to the tax witholding obligation of 391 shares, and is the total owned as of today, March 7, 2025.

Content

The original Form 4 filed by the Reporting Person on February 24, 2025 is amended by this Form 4A to disclose that 391 shares of common stock were sold to cover tax withholding obligations arising out of the vesting of the Reporting Person's Performace Stock Units. The original Form 4 did not report the sale to cover tax withholding obligations because the number of shares to be sold was not known at the time of filing. This Form 4A is in addition to, and does not replace, the disclosure contained in the original Form 4

The amount of common stock beneficially owned by the Reporting Person reflects adjustments for subsquent transactions reported on Form4A filed March 6, 2025, reflects the total owned subsquent to the tax witholding obligation of 391 shares, and is the total owned as of today, March 7, 2025.