Westlake CEO granted options and RSUs

Westlake Corp President and CEO Jean-Marc Gilson reported equity awards consisting of stock options and restricted stock units.

Rhea-AI Filing Summary

Westlake Corp President and CEO Jean-Marc Gilson reported equity awards consisting of stock options and restricted stock units. He was granted 109,139 employee stock options at an exercise price of $0.00 and 29,784 restricted stock units, each RSU representing the right to receive one share of common stock. The options become exercisable in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, while all RSUs vest on February 20, 2029.

Insider Trade Summary

Grant/Award: 138,923 shares

Grant/Award 2 txns

Insider Gilson Jean-Marc

Role President and CEO

Type	Security	Shares	Price	Value
Grant/Award	Employee Option (right to buy)	109,139	$0.00	$0.00
Grant/Award	Restricted Stock Units	29,784	$0.00	$0.00

Holdings After Transaction: Employee Option (right to buy) — 109,139 contracts (Direct); Restricted Stock Units — 29,784 contracts (Direct)

Footnotes (3)

1. F1. The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, respectively.
2. F2. Each restricted stock unit ("RSU") represents a contingent right to recieve one share of the Issuer's common stock.
3. F3. All of the RSUs will vest on February 20, 2029.

FAQ

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

What insider transaction did Westlake (WLK) report for Jean-Marc Gilson?

Westlake reported that President and CEO Jean-Marc Gilson received equity awards, including stock options and restricted stock units. These awards increase his potential future ownership through time-based vesting rather than through open-market share purchases or sales.

How many stock options were granted to the Westlake (WLK) CEO?

Jean-Marc Gilson was granted 109,139 employee stock options at an exercise price of $0.00. These options vest in three tranches of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, respectively, subject to continued service.

What restricted stock unit (RSU) awards did Westlake (WLK) disclose?

The CEO received 29,784 restricted stock units. Each RSU represents a contingent right to receive one share of Westlake’s common stock. All of these RSUs are scheduled to vest on February 20, 2029, aligning his compensation with long-term company performance.

When do the Westlake (WLK) CEO’s new equity awards vest?

The stock options become exercisable in three installments on February 20 of 2027, 2028 and 2029 at 33%, 33% and 34%. All 29,784 restricted stock units vest together on February 20, 2029, creating a long-term incentive horizon for the CEO.

Does the Westlake (WLK) Form 4 show any insider share sales?

The Form 4 discloses only grant or award acquisitions of stock options and restricted stock units for the CEO. It does not report any open-market purchases or dispositions, focusing solely on these time-vested equity incentive awards.

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 - 02:44 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^*

Gilson Jean-Marc

(Last) (First) (Middle)

2801 POST OAK BLVD., SUITE 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)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
02/20/2026

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

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		109,139		(1)	02/20/2036	Common Stock	109,139	$0	109,139	D
Restricted Stock Units	(2)	02/20/2026		A		29,784		(3)	(3)	Common Stock	29,784	$0	29,784	D

Explanation of Responses:

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

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

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

	Jea-Marc Gilson 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.