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[Form 4] Westlake Corporation Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
4
Rhea-AI Filing Summary

Michael J. Graff, a director of Westlake Corporation (WLK), filed a Form 4 reporting restricted stock unit activity and resulting ownership. The filing shows an acquisition on 08/08/2025 of 2,168 restricted stock units and a related transaction on 08/09/2025 affecting 1,128 restricted stock units. The document states restricted stock units convert into common stock one-for-one and that all restricted stock units will vest on August 8, 2026. The report lists a beneficial ownership of 21,142 common shares following the reported transactions. The form is signed by Michael Graff by POA on 08/11/2025.

Michael J. Graff, membro del consiglio di Westlake Corporation (WLK), ha presentato un Form 4 che segnala movimenti di restricted stock unit e la proprietà risultante. La comunicazione indica un'acquisizione in data 08/08/2025 di 2,168 restricted stock unit e una transazione correlata il 08/09/2025 che interessa 1,128 unità. Il documento precisa che le unità si convertono in azioni ordinarie uno a uno e che tutte le restricted stock unit matureranno l'8 agosto 2026. Dopo le operazioni riportate, la dichiarazione indica una posizione di beneficiario di 21,142 azioni ordinarie. Il modulo è firmato per procura da Michael Graff il 08/11/2025.

Michael J. Graff, director de Westlake Corporation (WLK), presentó un Form 4 informando movimientos de unidades de acciones restringidas y la propiedad resultante. El documento muestra una adquisición el 08/08/2025 de 2,168 unidades de acciones restringidas y una transacción relacionada el 08/09/2025 que afecta a 1,128 unidades. Se indica que las unidades se convierten en acciones comunes a razón de una por una y que todas las unidades vencerán el 8 de agosto de 2026. El informe enumera una tenencia beneficiaria de 21,142 acciones comunes tras las operaciones reportadas. El formulario está firmado por Michael Graff por poder el 08/11/2025.

Michael J. Graff, Westlake Corporation (WLK) 이사, � Form 4� 제출하여 제한부 주식 단위� 변� � 그에 따른 소유 현황� 보고했습니다. 서류에는 08/08/20252,168개의 제한부 주식 단위� 취득했고, 08/09/20251,128개의 제한부 주식 단위� 영향� 미치� 관� 거래가 있었다고 기재되어 있습니다. 문서에는 해당 단위가 보통주로 1대1� 전환되며, 모든 제한부 주식 단위� 2026� 8� 8일에 베스팅된�� 명시되어 있습니다. 보고� 거래 이후 21,142주의 보통주에 대� 실질� 보유가 기재되어 있습니다. 해당 양식은 위임장에 의해 Michael Graff� 대신하� 08/11/2025� 서명되었습니�.

Michael J. Graff, administrateur de Westlake Corporation (WLK), a déposé un Form 4 signalant des mouvements d'unités d'actions restreintes et la propriété résultante. Le document indique une acquisition le 08/08/2025 de 2,168 unités d'actions restreintes et une transaction liée le 08/09/2025 affectant 1,128 unités. Il est précisé que ces unités se convertissent en actions ordinaires à raison d'une pour une et que toutes les unités se verrouilleront (vesting) le 8 août 2026. Le rapport mentionne une possession bénéficiaire de 21,142 actions ordinaires à la suite des transactions déclarées. Le formulaire est signé par procuration pour Michael Graff le 08/11/2025.

Michael J. Graff, ein Direktor von Westlake Corporation (WLK), hat ein Form 4 eingereicht, das Aktivitäten mit Restricted Stock Units und die sich daraus ergebende Eigentümerschaft meldet. Die Einreichung zeigt eine Erwerbshandlung am 08/08/2025 von 2,168 Restricted Stock Units und eine damit zusammenhängende Transaktion am 08/09/2025, die 1,128 Restricted Stock Units betrifft. Das Dokument erklärt, dass sich die Restricted Stock Units eins zu eins in Stammaktien umwandeln und dass alle Restricted Stock Units am 8. August 2026 vollständig vesten. Der Bericht führt nach den gemeldeten Transaktionen eine wirtschaftliche Eigentümerschaft an 21,142 Stammaktien auf. Das Formular wurde am 08/11/2025 durch eine bevollmächtigte Person im Namen von Michael Graff unterzeichnet.

Positive
  • Director Michael J. Graff received 2,168 restricted stock units on 08/08/2025
  • RSUs convert to common stock on a one-for-one basis
  • Filing discloses clear vesting date: August 8, 2026
Negative
  • None.

Insights

TL;DR: Director received RSUs increasing reported holdings to 21,142 shares; transactions are routine compensation/vesting events.

The Form 4 documents equity-based compensation activity for Director Michael J. Graff rather than an open-market purchase or sale. The filing explicitly reports acquisitions of restricted stock units on 08/08/2025 (2,168 RSUs) and a related entry on 08/09/2025 for 1,128 RSUs. The RSUs convert one-for-one into common stock and a vesting date of August 8, 2026 is specified. From an investor-materiality perspective, the filing documents insider compensation and ownership levels but does not present quantifiable information about economic impact, price paid, or shares representing a material percentage of outstanding equity.

TL;DR: Filing indicates standard director equity awards and clear vesting mechanics; no governance red flags disclosed.

The disclosure shows restricted stock units granted/recorded for a director with explicit conversion and vesting terms: RSUs convert one-for-one into common shares and vest on a stated date. The report is signed by POA, and includes grant history (a 1,128 RSU grant dated 08/09/2024 vesting on its first anniversary). These are routine governance/compensation disclosures; the itemized entries and explanatory footnotes align with typical Section 16 reporting requirements. No departures from standard disclosure practice are evident in the text provided.

Michael J. Graff, membro del consiglio di Westlake Corporation (WLK), ha presentato un Form 4 che segnala movimenti di restricted stock unit e la proprietà risultante. La comunicazione indica un'acquisizione in data 08/08/2025 di 2,168 restricted stock unit e una transazione correlata il 08/09/2025 che interessa 1,128 unità. Il documento precisa che le unità si convertono in azioni ordinarie uno a uno e che tutte le restricted stock unit matureranno l'8 agosto 2026. Dopo le operazioni riportate, la dichiarazione indica una posizione di beneficiario di 21,142 azioni ordinarie. Il modulo è firmato per procura da Michael Graff il 08/11/2025.

Michael J. Graff, director de Westlake Corporation (WLK), presentó un Form 4 informando movimientos de unidades de acciones restringidas y la propiedad resultante. El documento muestra una adquisición el 08/08/2025 de 2,168 unidades de acciones restringidas y una transacción relacionada el 08/09/2025 que afecta a 1,128 unidades. Se indica que las unidades se convierten en acciones comunes a razón de una por una y que todas las unidades vencerán el 8 de agosto de 2026. El informe enumera una tenencia beneficiaria de 21,142 acciones comunes tras las operaciones reportadas. El formulario está firmado por Michael Graff por poder el 08/11/2025.

Michael J. Graff, Westlake Corporation (WLK) 이사, � Form 4� 제출하여 제한부 주식 단위� 변� � 그에 따른 소유 현황� 보고했습니다. 서류에는 08/08/20252,168개의 제한부 주식 단위� 취득했고, 08/09/20251,128개의 제한부 주식 단위� 영향� 미치� 관� 거래가 있었다고 기재되어 있습니다. 문서에는 해당 단위가 보통주로 1대1� 전환되며, 모든 제한부 주식 단위� 2026� 8� 8일에 베스팅된�� 명시되어 있습니다. 보고� 거래 이후 21,142주의 보통주에 대� 실질� 보유가 기재되어 있습니다. 해당 양식은 위임장에 의해 Michael Graff� 대신하� 08/11/2025� 서명되었습니�.

Michael J. Graff, administrateur de Westlake Corporation (WLK), a déposé un Form 4 signalant des mouvements d'unités d'actions restreintes et la propriété résultante. Le document indique une acquisition le 08/08/2025 de 2,168 unités d'actions restreintes et une transaction liée le 08/09/2025 affectant 1,128 unités. Il est précisé que ces unités se convertissent en actions ordinaires à raison d'une pour une et que toutes les unités se verrouilleront (vesting) le 8 août 2026. Le rapport mentionne une possession bénéficiaire de 21,142 actions ordinaires à la suite des transactions déclarées. Le formulaire est signé par procuration pour Michael Graff le 08/11/2025.

Michael J. Graff, ein Direktor von Westlake Corporation (WLK), hat ein Form 4 eingereicht, das Aktivitäten mit Restricted Stock Units und die sich daraus ergebende Eigentümerschaft meldet. Die Einreichung zeigt eine Erwerbshandlung am 08/08/2025 von 2,168 Restricted Stock Units und eine damit zusammenhängende Transaktion am 08/09/2025, die 1,128 Restricted Stock Units betrifft. Das Dokument erklärt, dass sich die Restricted Stock Units eins zu eins in Stammaktien umwandeln und dass alle Restricted Stock Units am 8. August 2026 vollständig vesten. Der Bericht führt nach den gemeldeten Transaktionen eine wirtschaftliche Eigentümerschaft an 21,142 Stammaktien auf. Das Formular wurde am 08/11/2025 durch eine bevollmächtigte Person im Namen von Michael Graff unterzeichnet.

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*
Graff Michael J

(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) 21,142 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.
Michael Graff 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

Who filed the Form 4 for Westlake (WLK)?

Michael J. Graff, identified as a director, filed the Form 4 (signed by POA J Feng dated 08/11/2025).

What transactions are reported on the WLK Form 4?

The filing reports an acquisition of 2,168 restricted stock units on 08/08/2025 and a related transaction affecting 1,128 restricted stock units on 08/09/2025.

How many Westlake (WLK) shares does Michael Graff beneficially own after these transactions?

The Form 4 lists a reported beneficial ownership of 21,142 common shares following the reported transactions.

When do the restricted stock units vest?

The filing states that all restricted stock units will vest on August 8, 2026, and notes a 1,128-RSU grant dated 08/09/2024 that vests on its first anniversary.

Do the restricted stock units convert to shares and at what ratio?

Yes. The document explicitly states the restricted stock units convert into the Issuer's common stock on a one-for-one basis.
WESTLAKE CORPORATION

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33.02M
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Specialty Chemicals
Industrial Organic Chemicals
United States
HOUSTON