Last 12 months
Inside the activity.
0 purchase rows · 9 sale rows
Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.Monthly counts
| Month | Purchases | Sales |
|---|---|---|
| Nov 2025 | 0 | 0 |
| Dec 2025 | 0 | 3 |
| Jan 2026 | 0 | 0 |
| Feb 2026 | 0 | 2 |
| Mar 2026 | 0 | 2 |
| Apr 2026 | 0 | 0 |
| May 2026 | 0 | 0 |
| Jun 2026 | 0 | 0 |
| Jul 2026 | 0 | 0 |
| Aug 2026 | 0 | 2 |
| Sep 2026 | 0 | 0 |
| Oct 2026 | 0 | 0 |
Latest available
Insider transactions
Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Owner / reported role | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| February 16, 2024 Filed Feb 20, 2024 14:05 UTC |
Chao AlbertDirector · President & CEO
|
GrantEmployee Option (right to buy) · Derivative | 44,324 | $0.00 Strike: $144.49 | $0.00 |
DisclosureSEC source: 0000950170-24-016825 · ownership.xml · derivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 44,324 Underlying: Common Stock · 44,324 shares Expires 2034-02-16 F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 16, 2025, 2026 and 2027, respectively. Read SEC document |
| February 16, 2024 Filed Feb 20, 2024 14:11 UTC |
Bender Mark StevenEVP & CFO
|
GrantRestricted Stock Units · Derivative | 4,459 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-016838 · ownership.xml · derivative · entry 2 Bender Mark Steven · CIK 0001330417 · EVP & CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,459 Underlying: Common Stock · 4,459 shares Expires not disclosed F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock F3 · derivative.exercise_date: All of the restricted stock units will vest on February 16, 2027. F3 · derivative.expiration_date: All of the restricted stock units will vest on February 16, 2027. Read SEC document |
| February 16, 2024 Filed Feb 20, 2024 14:11 UTC |
Bender Mark StevenEVP & CFO
|
GrantEmployee Option (right to buy) · Derivative | 12,344 | $0.00 Strike: $144.49 | $0.00 |
DisclosureSEC source: 0000950170-24-016838 · ownership.xml · derivative · entry 1 Bender Mark Steven · CIK 0001330417 · EVP & CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 12,344 Underlying: Common Stock · 12,344 shares Expires 2034-02-16 F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 16, 2025, 2026 and 2027, respectively. Read SEC document |
| February 16, 2024 Filed Feb 20, 2024 14:11 UTC |
Ederington L. BenjaminEVP, PEM, GC and CAO
|
GrantRestricted Stock Units · Derivative | 3,953 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-016837 · ownership.xml · derivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,953 Underlying: Common Stock · 3,953 shares Expires not disclosed F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock F3 · derivative.exercise_date: All of the restricted stock units will vest on February 16, 2027. F3 · derivative.expiration_date: All of the restricted stock units will vest on February 16, 2027. Read SEC document |
| February 16, 2024 Filed Feb 20, 2024 14:11 UTC |
Ederington L. BenjaminEVP, PEM, GC and CAO
|
GrantEmployee Option (right to buy) · Derivative | 10,943 | $0.00 Strike: $144.49 | $0.00 |
DisclosureSEC source: 0000950170-24-016837 · ownership.xml · derivative · entry 1 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,943 Underlying: Common Stock · 10,943 shares Expires 2034-02-16 F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 16, 2025, 2026 and 2027, respectively. Read SEC document |
| February 16, 2024 Filed Feb 20, 2024 14:11 UTC |
Chao John Tsung-chenDirector
|
GrantRestricted Stock Units · Derivative | 503 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-016836 · ownership.xml · derivative · entry 2 Chao John Tsung-chen · CIK 0001746472 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 503 Underlying: Common Stock · 503 shares Expires not disclosed F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock F3 · derivative.exercise_date: All of the restricted stock units will vest on February 16, 2027. F3 · derivative.expiration_date: All of the restricted stock units will vest on February 16, 2027. Read SEC document |
| February 16, 2024 Filed Feb 20, 2024 14:11 UTC |
Chao John Tsung-chenDirector
|
GrantEmployee Option (right to buy) · Derivative | 1,394 | $0.00 Strike: $144.49 | $0.00 |
DisclosureSEC source: 0000950170-24-016836 · ownership.xml · derivative · entry 1 Chao John Tsung-chen · CIK 0001746472 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,394 Underlying: Common Stock · 1,394 shares Expires 2034-02-16 F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 16, 2025, 2026 and 2027, respectively. Read SEC document |
| February 16, 2024 Filed Feb 20, 2024 14:07 UTC |
Zoeller Johnathan StevanVP and CAO
|
GrantRestricted Stock Units · Derivative | 715 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-016828 · ownership.xml · derivative · entry 2 Zoeller Johnathan Stevan · CIK 0001803678 · VP and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 715 Underlying: Common Stock · 715 shares Expires not disclosed F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock F3 · derivative.exercise_date: All of the restricted stock units will vest on February 16, 2027. F3 · derivative.expiration_date: All of the restricted stock units will vest on February 16, 2027. Read SEC document |
| February 16, 2024 Filed Feb 20, 2024 14:07 UTC |
Zoeller Johnathan StevanVP and CAO
|
GrantEmployee Option (right to buy) · Derivative | 1,980 | $0.00 Strike: $144.49 | $0.00 |
DisclosureSEC source: 0000950170-24-016828 · ownership.xml · derivative · entry 1 Zoeller Johnathan Stevan · CIK 0001803678 · VP and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,980 Underlying: Common Stock · 1,980 shares Expires 2034-02-16 F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 16, 2025, 2026 and 2027, respectively. Read SEC document |
| February 16, 2024 Filed Feb 21, 2024 10:30 UTC |
Janssens Thomas J.SVP, Ops - PEM & Corp Logistic
|
GrantCommon Stock | 2,346 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-017625 · ownership.xml · nonDerivative · entry 1 Janssens Thomas J. · CIK 0001834230 · SVP, Ops - PEM & Corp Logistic 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 11,877 F1 · shares: Represents shares of common stock that vested on February 16, 2024 upon the approval of the Issuer's Board of Directors ("BOD"), and the determination by the Compensation Committee of the BOD, of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 19, 2021 under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document |
| February 16, 2024 Filed Feb 21, 2024 10:27 UTC |
Buesinger Robert F.EVP, HIP, IT & Digital
|
GrantCommon Stock | 8,592 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-017621 · ownership.xml · nonDerivative · entry 1 Buesinger Robert F. · CIK 0001488587 · EVP, HIP, IT & Digital 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 25,346 F1 · shares: Represents shares of common stock that vested on February 16, 2024 upon the approval of the Issuer's Board of Directors ("BOD"), and the determination by the Compensation Committee of the BOD, of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 19, 2021 under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document |
| February 16, 2024 Filed Feb 21, 2024 10:28 UTC |
Chao JamesDirector · Chairman
|
GrantCommon Stock | 21,614 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-017623 · ownership.xml · nonDerivative · entry 1 Chao James · CIK 0001299505 · Director · Chairman 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 84,013 F1 · shares: Represents shares of common stock that vested on February 16, 2024 upon the approval of the Issuer's Board of Directors ("BOD"), and the determination by the Compensation Committee of the BOD, of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 19, 2021 under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document |
| February 16, 2024 Filed Feb 21, 2024 15:28 UTC |
Chao AlbertDirector · President & CEO
|
GrantCommon Stock | 39,738 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-017622 · ownership.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 559,886 F1 · shares: Represents shares of common stock that vested on February 16, 2024 upon the approval of the Issuer's Board of Directors ("BOD"), and the determination by the Compensation Committee of the BOD, of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 19, 2021 under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document |
| February 16, 2024 Filed Feb 21, 2024 15:31 UTC |
Zoeller Johnathan StevanVP and CAO
|
GrantCommon Stock | 1,736 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-017626 · ownership.xml · nonDerivative · entry 1 Zoeller Johnathan Stevan · CIK 0001803678 · VP and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,296 F1 · shares: Represents shares of common stock that vested on February 16, 2024 upon the approval of the Issuer's Board of Directors ("BOD"), and the determination by the Compensation Committee of the BOD, of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 19, 2021 under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document |
| February 16, 2024 Filed Feb 21, 2024 15:29 UTC |
Ederington L. BenjaminEVP, PEM, GC and CAO
|
GrantCommon Stock | 8,802 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-017624 · ownership.xml · nonDerivative · entry 1 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,718 F1 · shares: Represents shares of common stock that vested on February 16, 2024 upon the approval of the Issuer's Board of Directors ("BOD"), and the determination by the Compensation Committee of the BOD, of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 19, 2021 under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document |
| February 16, 2024 Filed Feb 21, 2024 15:25 UTC |
Bender Mark StevenEVP & CFO
|
GrantCommon Stock | 11,150 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-017619 · ownership.xml · nonDerivative · entry 1 Bender Mark Steven · CIK 0001330417 · EVP & CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 55,550 F1 · shares: Represents shares of common stock that vested on February 16, 2024 upon the approval of the Issuer's Board of Directors ("BOD"), and the determination by the Compensation Committee of the BOD, of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 19, 2021 under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document |
| November 30, 2023 Filed Dec 1, 2023 14:23 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 9,177 | $0.00 Strike: $108.12 | $0.00 |
DisclosureSEC source: 0001209191-23-057056 · doc4.xml · derivative · entry 9 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,633 Underlying: Common Stock · 9,177 shares Expires 2032-02-18 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F6 · derivative.exercise_date: The stock options are exercisable in three installments of 33%, 33% and 34% on February 18, 2023, 2024 and 2025, respectively. Read SEC document |
| November 30, 2023 Filed Dec 1, 2023 14:23 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 24,437 | $0.00 Strike: $86.54 | $0.00 |
DisclosureSEC source: 0001209191-23-057056 · doc4.xml · derivative · entry 8 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 12,589 Underlying: Common Stock · 24,437 shares Expires 2031-02-19 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F5 · derivative.exercise_date: The stock options are exercisable in three installments of 33%. 33% and 34% on February 19, 2022, 2023 and 2024, respectively. Read SEC document |
| November 30, 2023 Filed Dec 1, 2023 14:23 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 34,559 | $0.00 Strike: $65.81 | $0.00 |
DisclosureSEC source: 0001209191-23-057056 · doc4.xml · derivative · entry 7 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 34,559 shares Expires 2030-02-14 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F4 · derivative.exercise_date: The stock options are exercisable in three installments of 33%, 33% and 34% on February 14, 2021, 2022 and 2023, respectively. Read SEC document |
| November 30, 2023 Filed Dec 1, 2023 14:23 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Disposition to issuerCommon Stock | 10,981 | $129.14 | $1,418,086.34 |
DisclosureSEC source: 0001209191-23-057056 · doc4.xml · nonDerivative · entry 5 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 62,399 F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $129.005 to $129.60, inclusive. The reporting person undertakes to provide to Westlake Corporation, any security holder of Westlake Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Read SEC document |
| November 30, 2023 Filed Dec 1, 2023 14:23 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Disposition to issuerCommon Stock | 57,232 | $128.37 | $7,346,871.84 |
DisclosureSEC source: 0001209191-23-057056 · doc4.xml · nonDerivative · entry 4 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 73,380 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $128.00 to $129.00, inclusive. The reporting person undertakes to provide to Westlake Corporation, any security holder of Westlake Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Read SEC document |
| November 30, 2023 Filed Dec 1, 2023 14:23 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionCommon Stock | 9,177 | $108.12 | $992,194.30 |
DisclosureSEC source: 0001209191-23-057056 · doc4.xml · nonDerivative · entry 3 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 130,612 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 30, 2023 Filed Dec 1, 2023 14:23 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionCommon Stock | 24,437 | $86.54 | $2,114,726.66 |
DisclosureSEC source: 0001209191-23-057056 · doc4.xml · nonDerivative · entry 2 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 121,435 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 30, 2023 Filed Dec 1, 2023 14:23 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionCommon Stock | 34,599 | $65.81 | $2,277,046.69 |
DisclosureSEC source: 0001209191-23-057056 · doc4.xml · nonDerivative · entry 1 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 96,998 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 15, 2023 Filed Nov 17, 2023 08:28 UTC |
Buesinger Robert F.EVP, HIP, IT & Digital
|
SaleCommon Stock | 4,215 | $130.50 | $550,057.50 |
DisclosureSEC source: 0001209191-23-055640 · doc4.xml · nonDerivative · entry 1 Buesinger Robert F. · CIK 0001488587 · EVP, HIP, IT & Digital 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 16,754 Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 14:15 UTC |
Chao David Tsung-HungDirector · 10% owner
|
GiftCommon Stock | 19,423 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-23-047918 · doc4.xml · nonDerivative · entry 1 Chao David Tsung-Hung · CIK 0001726418 · Director · 10% owner 10b5-1 filing: No plan indicated Ownership: Indirect · by Trust Disclosed balance after: 19,423 F1 · ownership.nature: These shares are held in a trust for the benefit of the reporting person, who also serves as sole trustee. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionEmplopyee Option (right to buy) · Derivative | 43,738 | $0.00 Strike: $65.81 | $0.00 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · derivative · entry 14 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 34,599 Underlying: Common Stock · 43,738 shares Expires 2030-02-14 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F8 · derivative.exercise_date: The stock options are exercisable in three installments of 33%, 33% and 34% on February 14, 2021, 2022 and 2023, respectively. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionEmplopyee Option (right to buy) · Derivative | 55,766 | $0.00 Strike: $79.83 | $0.00 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · derivative · entry 13 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 55,766 shares Expires 2029-02-15 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F7 · derivative.exercise_date: The stock options are exercisable in three installments of 33%. 33% and 34% on February 15, 2020, 2021 and 2022, respectively. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionEmplopyee Option (right to buy) · Derivative | 35,321 | $0.00 Strike: $107.75 | $0.00 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · derivative · entry 12 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 35,321 shares Expires 2028-02-16 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F6 · derivative.exercise_date: The stock options are exercisable in three installments of 33%, 33% and 34% on February 16, 2019, 2020 and 2021, respectively Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionEmplopyee Option (right to buy) · Derivative | 62,197 | $0.00 Strike: $61.87 | $0.00 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · derivative · entry 11 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 62,197 shares Expires 2027-02-17 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F5 · derivative.exercise_date: The stock options are exercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020, respectively Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionEmplopyee Option (right to buy) · Derivative | 47,569 | $0.00 Strike: $44.42 | $0.00 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · derivative · entry 10 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 47,569 shares Expires 2026-02-18 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F4 · derivative.exercise_date: The stock options are exercisable in three installments of 33%. 33% and 34% on February 18, 2017, 2018 and 2019, respectively. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
GiftCommon Stock | 58,268 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · nonDerivative · entry 8 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 62,372 Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Disposition to issuerCommon Stock | 17,998 | $132.48 | $2,384,339.04 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · nonDerivative · entry 7 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 120,640 F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $132.01 to $132.91, inclusive. The reporting person undertakes to provide to Westlake Corporation, any security holder of Westlake Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Disposition to issuerCommon Stock | 226,593 | $131.15 | $29,718,351.73 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · nonDerivative · entry 6 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 138,638 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $131.00 to $131.99, inclusive. The reporting person undertakes to provide to Westlake Corporation, any security holder of Westlake Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionCommon Stock | 43,738 | $65.81 | $2,878,507.13 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · nonDerivative · entry 5 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 365,231 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionCommon Stock | 55,766 | $79.83 | $4,451,799.78 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · nonDerivative · entry 4 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 321,493 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionCommon Stock | 35,321 | $107.75 | $3,805,837.75 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · nonDerivative · entry 3 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 265,727 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionCommon Stock | 62,197 | $61.87 | $3,847,817.41 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · nonDerivative · entry 2 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 230,406 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 10:12 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionCommon Stock | 47,569 | $44.42 | $2,113,014.98 |
DisclosureSEC source: 0001209191-23-047916 · doc4.xml · nonDerivative · entry 1 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 168,209 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 14:11 UTC |
Chao AlbertDirector · President & CEO · 10% owner
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 19,988 | $0.00 Strike: $63.98 | $0.00 |
DisclosureSEC source: 0001209191-23-047915 · doc4.xml · derivative · entry 6 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 19,988 shares Expires 2024-02-14 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F5 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 14, 2015, 2016 and 2017, respectively. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 14:11 UTC |
Chao AlbertDirector · President & CEO · 10% owner
|
Disposition to issuerCommon Stock | 317 | $132.67 | $42,055.12 |
DisclosureSEC source: 0001209191-23-047915 · doc4.xml · nonDerivative · entry 4 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 520,148 F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $132.625 to $132.80, inclusive. The reporting person undertakes to provide to Westlake Corporation, any security holder of Westlake Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 14:11 UTC |
Chao AlbertDirector · President & CEO · 10% owner
|
Disposition to issuerCommon Stock | 8,397 | $131.94 | $1,107,874.99 |
DisclosureSEC source: 0001209191-23-047915 · doc4.xml · nonDerivative · entry 3 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 520,465 F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $131.62 to $132.57, inclusive. The reporting person undertakes to provide to Westlake Corporation, any security holder of Westlake Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 14:11 UTC |
Chao AlbertDirector · President & CEO · 10% owner
|
Disposition to issuerCommon Stock | 11,274 | $131.20 | $1,479,103.70 |
DisclosureSEC source: 0001209191-23-047915 · doc4.xml · nonDerivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 528,862 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $130.61 to $131.61, inclusive. The reporting person undertakes to provide to Westlake Corporation, any security holder of Westlake Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 14:11 UTC |
Chao AlbertDirector · President & CEO · 10% owner
|
Exercise / conversionCommon Stock | 19,988 | $63.98 | $1,278,782.27 |
DisclosureSEC source: 0001209191-23-047915 · doc4.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 540,136 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| August 31, 2023 Filed Sep 1, 2023 14:14 UTC |
Chao Catherine T.Director · 10% owner
|
GiftCommon Stock | 19,423 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-23-047917 · doc4.xml · nonDerivative · entry 1 Chao Catherine T. · CIK 0001974884 · Director · 10% owner 10b5-1 filing: No plan indicated Ownership: Indirect · by Trust Disclosed balance after: 19,423 F1 · ownership.nature: These shares are held in a trust for the benefit of the reporting person, who also serves as sole trustee. Read SEC document |
| August 30, 2023 Filed Aug 31, 2023 11:35 UTC |
Buesinger Robert F.EVP, HIP, IT & Digital
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 4,857 | $0.00 Strike: $86.54 | $0.00 |
DisclosureSEC source: 0001209191-23-047807 · doc4.xml · derivative · entry 3 Buesinger Robert F. · CIK 0001488587 · EVP, HIP, IT & Digital 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 4,857 shares Expires 2031-02-19 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 19, 2022, 2023 and 2024, respectively. Read SEC document |
| August 30, 2023 Filed Aug 31, 2023 11:35 UTC |
Buesinger Robert F.EVP, HIP, IT & Digital
|
Disposition to issuerCommon Stock | 4,857 | $134.47 | $653,135.85 |
DisclosureSEC source: 0001209191-23-047807 · doc4.xml · nonDerivative · entry 2 Buesinger Robert F. · CIK 0001488587 · EVP, HIP, IT & Digital 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,969 Read SEC document |
| August 30, 2023 Filed Aug 31, 2023 11:35 UTC |
Buesinger Robert F.EVP, HIP, IT & Digital
|
Exercise / conversionCommon Stock | 4,857 | $86.54 | $420,314.58 |
DisclosureSEC source: 0001209191-23-047807 · doc4.xml · nonDerivative · entry 1 Buesinger Robert F. · CIK 0001488587 · EVP, HIP, IT & Digital 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 25,826 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| August 30, 2023 Filed Aug 31, 2023 14:36 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionEmplopyee Option (right to buy) · Derivative | 17,735 | $0.00 Strike: $44.42 | $0.00 |
DisclosureSEC source: 0001209191-23-047818 · doc4.xml · derivative · entry 6 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 47,569 Underlying: Common Stock · 17,735 shares Expires 2026-02-18 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F4 · derivative.exercise_date: The stock options are exercisable in three installments of 33%. 33% and 34% on February 18, 2017, 2018 and 2019, respectively. Read SEC document |
| August 30, 2023 Filed Aug 31, 2023 14:36 UTC |
Chao JamesDirector · Chairman · 10% owner
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 12,321 | $0.00 Strike: $68.09 | $0.00 |
DisclosureSEC source: 0001209191-23-047818 · doc4.xml · derivative · entry 5 Chao James · CIK 0001299505 · Director · Chairman · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 12,321 shares Expires 2025-02-20 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_date: The stock options are exercisable in three installments of 33%, 33% and 34% on February 20, 2016, 2017 and 2018, respectively. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.