Westlake director converts 2,168 RSUs to stock

Westlake Corp director Jeffrey Wayne Sheets reported the vesting and conversion of 2,168 Restricted Stock Units into an equal number of shares of common stock on August 8, 2026.

Rhea-AI Filing Summary

Westlake Corp director Jeffrey Wayne Sheets reported the vesting and conversion of 2,168 Restricted Stock Units into an equal number of shares of common stock on August 8, 2026. The RSUs, granted on August 8, 2025 and vesting on the first anniversary of the grant date, converted on a one-for-one basis into common shares. Following the transaction, Sheets directly owned 14,927 shares of Westlake common stock.

Insider Trade Summary

2,168 shares exercised/converted

Exercise 2 txns

Insider Sheets Jeffrey Wayne

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units F1, F2	2,168	$0.00	$0.00
Exercise	Common Stock F1	2,168	--	--

Holdings After Transaction: Restricted Stock Units — 2,168 contracts (Direct); Common Stock — 14,927 shares (Direct)

Footnotes (2)

1. F1. Restricted stock units convert into the Issuer's common stock on a one-for-one basis.
2. F2. On August 8, 2025 the reporting person was granted 2,168 restricted stock units vesting on the first anniversary of the grant date.

Key Figures

RSUs converted: 2,168 Restricted Stock Units Common shares acquired via conversion: 2,168 shares Shares held after transaction: 14,927 shares +1 more

4 metrics

RSUs converted 2,168 Restricted Stock Units Restricted Stock Units converted into common stock on August 8, 2026

Common shares acquired via conversion 2,168 shares Common stock received upon RSU conversion on August 8, 2026

Shares held after transaction 14,927 shares Direct ownership of Westlake common stock following the reported transactions

RSU grant date August 8, 2025 Date 2,168 Restricted Stock Units were granted, vesting after one year

Key Terms

Restricted Stock Units, derivative security, one-for-one basis, vests on the first anniversary of the grant date

4 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.

derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security""

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

one-for-one basis financial

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

vests on the first anniversary of the grant date financial

"restricted stock units vesting on the first anniversary of the grant date."

FAQ

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

What did Westlake Corp (WLK) director Jeffrey Wayne Sheets report in this Form 4?

Jeffrey Wayne Sheets reported the vesting and conversion of 2,168 Restricted Stock Units into 2,168 shares of common stock on August 8, 2026, reflecting an equity award settlement rather than an open-market trade.

How many Westlake Corp (WLK) shares does Jeffrey Wayne Sheets hold after this transaction?

After the reported RSU conversion, Jeffrey Wayne Sheets directly holds 14,927 shares of Westlake Corp common stock, according to the post-transaction ownership figure disclosed in the filing.

Were any Westlake Corp (WLK) shares sold by Jeffrey Wayne Sheets in this Form 4?

No shares were reported sold. The Form 4 shows an exercise/conversion of 2,168 Restricted Stock Units into common stock, with no sales or open-market dispositions reported in this filing.

What is the conversion ratio of the Restricted Stock Units in the Westlake Corp (WLK) filing?

The Restricted Stock Units convert into Westlake Corp’s common stock on a one-for-one basis, meaning each of the 2,168 RSUs produced one share of common stock upon vesting and conversion.

When were the Restricted Stock Units in this Westlake Corp (WLK) Form 4 originally granted?

The reporting person was granted 2,168 Restricted Stock Units on August 8, 2025, vesting on the first anniversary of the grant date, which led to the August 8, 2026 conversion into common stock.

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

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Accepted by SEC EDGAR 08/10/2026 - 01:54 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^*

Sheets Jeffrey Wayne

(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)
08/08/2026

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
Common Stock	08/08/2026		M		2,168	A	(1)	14,927	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)	08/08/2026		M			2,168	(2)	(2)	Common Stock	2,168	$0	2,168	D

Explanation of Responses:

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

2. On August 8, 2025 the reporting person was granted 2,168 restricted stock units vesting on the first anniversary of the grant date.

	Jeffrey Sheets by J Feng POA	08/10/2026
	** 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)