[Form 4] Westlake Corporation Insider Trading Activity

Rhea-AI Filing Summary

Jeffrey W. Sheets, a director of Westlake Corporation (WLK), reported restricted stock unit and common share transactions. On 08/08/2025 the filing shows acquisition of 2,168 restricted stock units that convert one-for-one into common stock. A separate reported transaction on 08/09/2025 involves 1,128 restricted stock units with 0 derivative securities shown as held following that transaction.

Following the reported activity the Form 4 lists 12,759 common shares beneficially owned (direct). The filing states all restricted stock units will vest on August 8, 2026 and notes the 1,128-unit grant was made on August 9, 2024 with a one-year vesting schedule.

Positive

• Beneficial ownership reported at 12,759 common shares (direct), explicitly stated in the filing
• 2,168 restricted stock units acquired on 08/08/2025 that convert one-for-one into common shares
• All restricted stock units vest on August 8, 2026, giving clear vesting schedule
• Derivative entries show $0 price, indicating awarded RSUs rather than cash purchases

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Routine equity compensation and vesting disclosures; increases in reported direct holdings are administrative, not governance changes.

The Form 4 documents award- and vesting-related activity by a director rather than executive compensation changes or transfers to third parties. The filing shows conversion mechanics (one-for-one RSU to common stock) and a future vesting date, which are standard for equity-based incentives. The reported direct beneficial ownership of 12,759 shares provides a clear snapshot of current holdings but does not, by itself, indicate changes in control or governance dynamics.

Securities Analyst

TL;DR: Insider reported receipt and conversion of RSUs, modest change in shareholdings; no sale or material disposition reported.

The filing lists an acquisition-type entry for 2,168 RSUs and a separate transaction involving 1,128 RSUs, with derivative entries priced at $0, consistent with granted awards rather than market purchases. The combination of converted/vested units and outstanding RSUs results in 12,759 direct common shares reported. From a market-impact perspective, these figures are small relative to large-cap capitalization and represent compensation-related ownership rather than active trading.

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^*

Sheets Jeffrey Wayne

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
08/08/2025

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	08/09/2025		M		1,128	A	(1)	12,759	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)	08/08/2025		A		2,168		(2)	(2)	Common Stock	2,168	$0	2,168	D
Restricted Stock Units	(1)	08/09/2025		M			1,128	(3)	(3)	Common Stock	1,128	$0	0	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 8, 2026.

3. On August 9, 2024 the reporting person was granted 1,128 restricted stock units vesting on the first anniversary of the grant date.

	Jeffrey W. Sheets by J Feng POA	08/11/2025
	** 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.

FAQ

What transactions does the Westlake (WLK) Form 4 report for Jeffrey W. Sheets?

The filing reports acquisition-related entries for 2,168 restricted stock units on 08/08/2025 and a separate transaction involving 1,128 restricted stock units on 08/09/2025.

How many Westlake (WLK) common shares does Jeffrey W. Sheets beneficially own after these transactions?

The Form 4 lists 12,759 common shares beneficially owned following the reported transactions (direct ownership).

When do the restricted stock units reported by Jeffrey W. Sheets vest?

The filing states all restricted stock units will vest on August 8, 2026.

What is the conversion ratio for the restricted stock units reported in the filing?

The filing specifies the restricted stock units convert into the issuer's common stock on a one-for-one basis.

Was the 1,128-unit grant mentioned in the Form 4 newly granted or previously reported?

The Form notes the 1,128-unit grant was made on August 9, 2024 and vests on the first anniversary of that grant date.