Westlake CFO converts RSUs, withholds shares for tax

Westlake Corp executive Mark Steven Bender reported equity compensation activity involving restricted stock units (RSUs) and common stock.

Rhea-AI Filing Summary

Westlake Corp executive Mark Steven Bender reported equity compensation activity involving restricted stock units (RSUs) and common stock. On February 17, 4,751 RSUs converted into an equal number of Westlake common shares at a stated price of $0.0000 per share. Following this derivative exercise, his direct common stock holdings increased to 61,719 shares.

On February 18, 1,209 common shares were disposed of through a tax-withholding transaction at $98.95 per share to satisfy tax obligations arising from the RSU vesting, as described in the footnotes. After this withholding, Bender directly holds 60,510 shares of Westlake common stock.

Insider Trade Summary

4,751 shares exercised/converted

Exercise 3 txns

Insider Bender Mark Steven

Role EVP & CFO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	1,209	$98.95	$120K
Exercise	Restricted Stock Units	4,751	$0.00	$0.00
Exercise	Common Stock	4,751	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 0 contracts (Direct); Common Stock — 60,510 shares (Direct)

Footnotes (3)

1. F1. Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis.
2. F2. On February 17, 2023, the reporting person was granted 4,751 RSUs vesting on the third anniversay of the grant date.
3. F3. Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did Westlake (WLK) CFO Mark Steven Bender report?

Mark Steven Bender reported conversion of 4,751 restricted stock units into Westlake common stock and a related tax-withholding disposition of 1,209 shares. These transactions reflect equity compensation vesting and associated tax settlement, not an open-market share purchase or sale.

How many Westlake (WLK) shares did the CFO acquire from RSU conversion?

He acquired 4,751 Westlake common shares through conversion of restricted stock units on February 17. The RSUs convert to common stock on a one-for-one basis, increasing his direct holdings before any tax-withholding transactions were applied following the vesting event.

Why were 1,209 Westlake (WLK) shares disposed of in the Form 4 filing?

The 1,209 shares were withheld to cover tax obligations arising from the vesting of the CFO’s restricted stock units. This tax-withholding disposition, reported at $98.95 per share, is a standard mechanism rather than an open-market sale initiated for portfolio reasons.

What is the Westlake (WLK) CFO’s direct common stock holding after these transactions?

After the RSU conversion and subsequent tax-withholding disposition, the CFO directly holds 60,510 shares of Westlake common stock. This reflects his equity position following the vesting of 4,751 restricted stock units granted on February 17, 2023.

How do Westlake (WLK) restricted stock units convert into common stock?

Westlake restricted stock units convert into common stock on a one-for-one basis upon vesting. In this case, 4,751 RSUs vested and converted into 4,751 common shares, consistent with the one-for-one conversion ratio described in the associated footnote to the transactions.

When were the vested RSUs in the Westlake (WLK) Form 4 originally granted?

The 4,751 restricted stock units were originally granted on February 17, 2023, and were scheduled to vest on the third anniversary of the grant date. Their vesting triggered the conversion into common shares and the related tax-withholding share disposition.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/19/2026 - 03:18 PM EST 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)
02/17/2026

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

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	02/17/2026		M		4,751	A	$0(1)	61,719	D
Common Stock	02/18/2026		F		1,209(3)	D	$98.95	60,510	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
Restricted Stock Units	(1)	02/17/2026		M			4,751	(2)	(2)	Common Stock	4,751	$0	0	D

Explanation of Responses:

1. Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis.

2. On February 17, 2023, the reporting person was granted 4,751 RSUs vesting on the third anniversay of the grant date.

3. Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs.

	M. Steven Bender by J Feng POA	02/19/2026
	** 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.
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