Westlake (WLK) EVP granted stock options, RSUs and reports tax share disposal

Rhea-AI Filing Summary

Westlake Corp executive L. Benjamin Ederington reported equity awards and related tax withholding transactions. On February 20, 2026, he received 25,656 employee stock options at an exercise price of $0.0000 per share. According to the disclosure, these options become exercisable in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, respectively.

He was also granted 7,002 restricted stock units, each representing a contingent right to receive one share of common stock, which are scheduled to vest on February 20, 2029. In addition, 1,425 shares of common stock were acquired on February 19, 2026 upon the vesting of performance stock units, following the compensation committee’s confirmation that performance criteria were satisfied. To cover tax obligations from this vesting, 357 shares of common stock were disposed of at a weighted-average price of $94.102 per share. After these transactions, he directly owned 80,158 common shares.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Ederington L. Benjamin

Role EVP, Legal & External Affairs

Type	Security	Shares	Price	Value
Grant/Award	Employee Option (right to buy)	25,656	$0.00	--
Grant/Award	Restricted Stock Units	7,002	$0.00	--
Tax Withholding	Common Stock	357	$94.102	$34K
Grant/Award	Common Stock	1,425	$0.00	--

Holdings After Transaction: Employee Option (right to buy) — 25,656 shares (Direct); Restricted Stock Units — 7,002 shares (Direct); Common Stock — 80,158 shares (Direct)

Footnotes (1)

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. Shares otherwise issuable were witheld to satisfy tax obligations arising out of vesting of the Reporting Person's PSUs. Weighted average price. These shares were sold in multiple transactions at prices ranging from $94.10 to 94.38, 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. The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, respectively. Each restricted stock unit ("RSU") represents a contingent right to recieve one share of the Issuer's common stock. All of the RSUs will vest on February 20, 2029.

Form 4 Insider Transactions: What Each Field Means →

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
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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^*

Ederington L. Benjamin

(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, Legal & External Affairs

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/19/2026		A		1,425(1)	A	$0	80,515	D
Common Stock	02/20/2026		F		357(2)	D	$94.102(3)	80,158	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
Employee Option (right to buy)	$94.48	02/20/2026		A		25,656		(4)	02/20/2036	Common Stock	25,656	$0	25,656	D
Restricted Stock Units	(5)	02/20/2026		A		7,002		(6)	(6)	Common Stock	7,002	$0	7,002	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 $94.10 to 94.38, 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.

	L. Benjamin Ederington 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.
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FAQ

What equity awards did Westlake Corp (WLK) grant to L. Benjamin Ederington?

Westlake Corp granted L. Benjamin Ederington 25,656 stock options and 7,002 restricted stock units. The options vest in three annual tranches, while all RSUs are scheduled to vest on February 20, 2029, subject to continued service and plan terms.

When do L. Benjamin Ederington’s new Westlake (WLK) stock options and RSUs vest?

The 25,656 stock options vest in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029. All 7,002 restricted stock units are scheduled to vest on February 20, 2029, according to the filing.

How many Westlake (WLK) shares did L. Benjamin Ederington acquire from PSU vesting?

Upon satisfaction of performance criteria for previously granted PSUs, L. Benjamin Ederington acquired 1,425 shares of common stock on February 19, 2026. These shares resulted from a performance-based award under Westlake’s 2013 Omnibus Incentive Plan.

Why were 357 Westlake (WLK) shares disposed of in this Form 4 filing?

The filing states that 357 shares of Westlake common stock were disposed of to satisfy tax obligations arising from the vesting of performance stock units. This tax-withholding disposition used shares valued at a weighted-average price of $94.102 per share.

What is L. Benjamin Ederington’s Westlake (WLK) share ownership after these transactions?

After the reported transactions, L. Benjamin Ederington directly owned 80,158 shares of Westlake common stock. This figure reflects the PSU-related share acquisition and the 357-share tax-withholding disposition recorded in the same Form 4 filing.

What role does L. Benjamin Ederington hold at Westlake Corp (WLK)?

L. Benjamin Ederington is identified as Executive Vice President, Legal & External Affairs of Westlake Corp. The equity awards and share movements disclosed in the Form 4 relate to his compensation and associated tax withholding as a senior executive.