Westlake CFO gets options, RSUs; shares withheld

Q: What equity awards did Westlake (WLK) CFO Mark Steven Bender receive?

He received stock options and RSUs. The Westlake (WLK) CFO was granted 28,389 employee stock options and 7,747 restricted stock units on February 20, 2026, as part of his equity compensation, all reported as directly owned.

Q: How many Westlake (WLK) shares vested for the CFO and why?

1,777 common shares vested from PSUs. These Westlake (WLK) shares vested on February 19, 2026, after the compensation committee determined performance criteria were met for performance stock units originally granted on February 17, 2023.

Q: Why were 445 Westlake (WLK) shares disposed of by the CFO?

They were withheld to pay taxes. A total of 445 Westlake (WLK) common shares were disposed of at a weighted average price around $94.10 to satisfy tax obligations arising from the vesting of the CFO’s performance stock units.

Q: When do the Westlake (WLK) CFO’s new stock options and RSUs vest?

The options vest over three years; RSUs in 2029. The stock options vest in three installments of 33%, 33% and 34% in 2027, 2028 and 2029, while all granted RSUs vest on February 20, 2029, subject to continued service.

Q: How many Westlake (WLK) common shares does the CFO own after these transactions?

He directly owns 61,842 common shares. Following the vesting of performance stock units and the 445-share tax-withholding disposition, the Westlake (WLK) executive vice president and CFO is reported as directly holding 61,842 shares of common stock.

Westlake Corp executive vice president and CFO Mark Steven Bender reported multiple equity compensation transactions.

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Rhea-AI Filing Summary

Westlake Corp executive vice president and CFO Mark Steven Bender reported multiple equity compensation transactions. He received a grant of 28,389 employee stock options and 7,747 restricted stock units on February 20, 2026, both held directly.

On February 19, 2026, 1,777 shares of common stock vested after performance criteria were certified for previously granted performance stock units. To cover tax obligations from this vesting, 445 common shares were disposed of at a weighted average price of about $94.10, leaving the CFO with 61,842 common shares directly owned. The stock options vest in three annual installments starting in 2027, and all RSUs vest on February 20, 2029.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Bender Mark Steven

Role EVP & CFO

Type	Security	Shares	Price	Value
Grant/Award	Employee Option (right to buy)	28,389	$0.00	$0.00
Grant/Award	Restricted Stock Units	7,747	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	445	$94.099	$42K
Grant/Award	Common Stock	1,777	$0.00	$0.00

Holdings After Transaction: Employee Option (right to buy) — 28,389 contracts (Direct); Restricted Stock Units — 7,747 contracts (Direct); Common Stock — 61,842 shares (Direct)

Footnotes (6)

F1. Represents shares of common stock that vested on February 19, 2026, upon the determination by the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 17, 2023, under the terms of the Issuer's 2013 Omnibus Incentive Plan.
F2. Shares otherwise issuable were witheld to satisfy tax obligations arising out of vesting of the Reporting Person's PSUs.
F3. Weighted average price. These shares were sold in multiple transactions at prices ranging from $93.98 to $94.10, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
F4. The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, respectively.
F5. Each restricted stock unit ("RSU") represents a contingent right to recieve one share of the Issuer's common stock.
F6. All of the RSUs will vest on February 20, 2029.

FAQ

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What equity awards did Westlake (WLK) CFO Mark Steven Bender receive?

He received stock options and RSUs. The Westlake (WLK) CFO was granted 28,389 employee stock options and 7,747 restricted stock units on February 20, 2026, as part of his equity compensation, all reported as directly owned.

How many Westlake (WLK) shares vested for the CFO and why?

1,777 common shares vested from PSUs. These Westlake (WLK) shares vested on February 19, 2026, after the compensation committee determined performance criteria were met for performance stock units originally granted on February 17, 2023.

Why were 445 Westlake (WLK) shares disposed of by the CFO?

They were withheld to pay taxes. A total of 445 Westlake (WLK) common shares were disposed of at a weighted average price around $94.10 to satisfy tax obligations arising from the vesting of the CFO’s performance stock units.

When do the Westlake (WLK) CFO’s new stock options and RSUs vest?

The options vest over three years; RSUs in 2029. The stock options vest in three installments of 33%, 33% and 34% in 2027, 2028 and 2029, while all granted RSUs vest on February 20, 2029, subject to continued service.

How many Westlake (WLK) common shares does the CFO own after these transactions?

He directly owns 61,842 common shares. Following the vesting of performance stock units and the 445-share tax-withholding disposition, the Westlake (WLK) executive vice president and CFO is reported as directly holding 61,842 shares of common stock.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 02/23/2026 - 02:42 PM EST

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

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)
02/19/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	02/19/2026		A		1,777⁽¹⁾	A	$0	62,287	D
Common Stock	02/20/2026		F		445⁽²⁾	D	$94.099⁽³⁾	61,842	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Employee Option (right to buy)	$94.48	02/20/2026		A		28,389		⁽⁴⁾	02/20/2036	Common Stock	28,389	$0	28,389	D
Restricted Stock Units	⁽⁵⁾	02/20/2026		A		7,747		⁽⁶⁾	⁽⁶⁾	Common Stock	7,747	$0	7,747	D

Explanation of Responses:

1. Represents shares of common stock that vested on February 19, 2026, upon the determination by the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 17, 2023, under the terms of the Issuer's 2013 Omnibus Incentive Plan.

2. Shares otherwise issuable were witheld to satisfy tax obligations arising out of vesting of the Reporting Person's PSUs.

3. Weighted average price. These shares were sold in multiple transactions at prices ranging from $93.98 to $94.10, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

4. The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, respectively.

5. Each restricted stock unit ("RSU") represents a contingent right to recieve one share of the Issuer's common stock.

6. All of the RSUs will vest on February 20, 2029.

	Mark Steven Bender by J. Feng, POA	02/23/2026
	** 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.

Source: View Original Filing on SEC EDGAR