2,184 Westlake RSUs granted to director Lubel

Lubel Kimberly S reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Lubel Kimberly S reported acquisition or exercise transactions in this Form 4 filing.

WESTLAKE CORP director Kimberly S. Lubel received a grant of 2,184 Restricted Stock Units representing an equivalent number of shares of common stock. These RSUs were awarded at $0.00 per unit and will vest on August 14, 2027. Following this grant, she holds 2,184 RSUs directly.

Insider Trade Summary

Grant/Award: 2,184 shares

Grant/Award 1 txn

Insider Lubel Kimberly S

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units F1, F2	2,184	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 2,184 contracts (Direct)

Footnotes (2)

1. F1. Restricted stock units convert into the Issuer's common stock on a one-for-one basis.
2. F2. All of the restricted stock units will vest on August 14, 2027.

Key Figures

Restricted Stock Units granted: 2,184.0000 units Award price per unit: 0.0000 RSUs outstanding after grant: 2,184.0000 units +2 more

5 metrics

Restricted Stock Units granted 2,184.0000 units Equity award to director Kimberly S. Lubel

Award price per unit 0.0000 Grant of Restricted Stock Units at no cash cost to the insider

RSUs outstanding after grant 2,184.0000 units Total Restricted Stock Units held directly by Kimberly S. Lubel after the reported transaction

Underlying common shares 2,184.0000 shares Common stock underlying the granted Restricted Stock Units on a one-for-one basis

RSU vesting date August 14, 2027 Date when all of the reported Restricted Stock Units will vest

Key Terms

Restricted Stock Units, vest, derivative

3 terms

Restricted Stock Units financial

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

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

vest financial

"All of the restricted stock units will vest on August 14, 2027."

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

derivative financial

"transaction_type": "derivative"

A derivative is a financial contract whose value depends on the price or performance of another asset or measure — for example a stock, index, interest rate, commodity, or currency. Investors use derivatives like insurance or leveraged bets to hedge risk, speculate, or gain exposure without owning the underlying asset; they can protect portfolios but also amplify losses and introduce counterparty and market risk.

FAQ

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

What did WESTLAKE CORP (WLK) disclose about Kimberly S. Lubel in this Form 4?

WESTLAKE CORP reported that director Kimberly S. Lubel received a grant of 2,184 Restricted Stock Units. These units convert into common stock on a one-for-one basis, increasing her reported direct equity-based position in the company.

How many Restricted Stock Units did Kimberly S. Lubel receive from WLK?

Kimberly S. Lubel was granted 2,184 Restricted Stock Units of WESTLAKE CORP. Each RSU represents the right to receive one share of common stock, so the award corresponds to 2,184 potential common shares upon settlement.

When do Kimberly S. Lubel’s newly granted WLK Restricted Stock Units vest?

All of Kimberly S. Lubel’s 2,184 Restricted Stock Units will vest on August 14, 2027. Vesting means the units become earned at that time, after which they can convert into an equivalent number of WLK common shares on a one-for-one basis.

What is the conversion ratio of Kimberly S. Lubel’s WLK Restricted Stock Units?

The Form 4 states that Lubel’s Restricted Stock Units convert into WESTLAKE CORP common stock on a one-for-one basis. This means each of the 2,184 RSUs entitles her to receive one share of common stock upon settlement.

What are Kimberly S. Lubel’s reported holdings after this WLK RSU grant?

After the transaction, Kimberly S. Lubel is reported to directly hold 2,184 Restricted Stock Units. These RSUs represent potential future ownership of 2,184 shares of WESTLAKE CORP common stock, subject to vesting on August 14, 2027.

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

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Available on EDGAR 08/17/2026 - 12:27 PM EDT Accepted by SEC EDGAR 08/17/2026 - 12:26 PM EDT 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^*

Lubel Kimberly S

(Last) (First) (Middle)

2801 POST OAK BLVD., STE. 600

(Street)

HOUSTON TEXAS 77056

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/14/2026

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

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

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

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
Restricted Stock Units	(1)	08/14/2026		A		2,184		(2)	(2)	Common Stock	2,184	$0	2,184	D

Explanation of Responses:

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

2. All of the restricted stock units will vest on August 14, 2027.

	Kimberly Lubel by J Feng POA	08/17/2026
	** 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.
* Form 4: SEC 1474 (03-26)