Westlake Corp (NYSE: WLK) CFO disposes 1,171 shares for RSU tax withholding

Rhea-AI Filing Summary

Westlake Corp executive vice president and CFO Mark Steven Bender reported a tax-related share disposition. On February 16, 2022, 1,171 shares of common stock were sold at $104.96 per share to cover tax withholding obligations arising from the vesting of his restricted stock units. After this transaction, he held 25,608 common shares directly. The amended Form 4 corrects the previously reported number of shares sold to cover these tax obligations and is stated to be in addition to, and not a replacement for, the original Form 4.

Insider Trade Summary

Net Seller: 1,171 shares

Net Sell 1 txn

Insider Bender Mark Steven

Role EVP & CFO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	1,171	$104.96	$123K

Holdings After Transaction: Common Stock — 25,608 shares (Direct)

Footnotes (1)

1. F1. The original Form 4 filed by the Reporting Person on February 17, 2022, is amended by this Form 4/A to disclose that 1,171 shares of common stock were sold to cover tax withholding obligations arising from the vesting of the Reporting Person's restricted stock units. The original Form 4 reported an incorrect number of shares sold to cover tax withholding obligations. [This Form 4/A is in addition to, and does not replace, the disclosure contained in the original Form 4.]

FAQ

What insider transaction did Westlake Corp (WLK) report for Mark Steven Bender?

Westlake Corp executive vice president and CFO Mark Steven Bender reported a disposition of 1,171 shares of common stock. The shares were sold specifically to cover tax withholding obligations that arose when his restricted stock units vested, according to the amended disclosure language.

Why were 1,171 Westlake Corp (WLK) shares sold in this Form 4/A?

The amended filing explains that 1,171 shares of Westlake Corp common stock were sold to cover tax withholding obligations. These obligations arose from the vesting of Mark Steven Bender’s restricted stock units, and the transaction is described as a tax-withholding disposition rather than a typical open-market sale.

What does this Form 4/A amendment change from the original Westlake Corp (WLK) filing?

The Form 4/A states it amends the original Form 4 filed on February 17, 2022, by correcting the number of shares sold to cover tax withholding obligations. It notes the original Form 4 reported an incorrect share amount for that tax-related sale.

How many Westlake Corp (WLK) shares did Mark Steven Bender hold after the tax-withholding sale?

After the tax-withholding disposition of 1,171 shares, the filing reports that Mark Steven Bender directly owned 25,608 shares of Westlake Corp common stock. This post-transaction balance reflects his holdings following the February 16, 2022 tax-covering sale tied to restricted stock unit vesting.

How is the February 16, 2022 Westlake Corp (WLK) transaction coded in the Form 4/A?

The transaction is coded with transaction code F, described as payment of a tax liability by delivering securities. The filing characterizes it as a non-derivative disposition, specifically a tax-withholding disposition related to the vesting of restricted stock units for Mark Steven Bender.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 03/06/2026 - 03:16 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Bender Mark Steven

(Last) (First) (Middle)

2801 POST OAK BLVD., STE. 600

(Street)

HOUSTON TX 77056

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
WESTLAKE CORP [ WLK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & CFO

3. Date of Earliest Transaction (Month/Day/Year)
02/16/2022

4. If Amendment, Date of Original Filed (Month/Day/Year)
02/17/2022

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/16/2022		F		1,171(1)	D	$104.96	25,608	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The original Form 4 filed by the Reporting Person on February 17, 2022, is amended by this Form 4/A to disclose that 1,171 shares of common stock were sold to cover tax withholding obligations arising from the vesting of the Reporting Person's restricted stock units. The original Form 4 reported an incorrect number of shares sold to cover tax withholding obligations. [This Form 4/A is in addition to, and does not replace, the disclosure contained in the original Form 4.]

	M. Steven Bender by J. Feng, POA	03/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.