person · Reporting owner

Ederington L. Benjamin

Disclosed activity across 2 companies

Tapewire entity: 65147
SEC CIK: 0001588279

Reported relationships

Latest disclosed role at each company.

Company	Last reported as	Report date	Published
WESTLAKE CORPWLK · Entity 3555	EVP, Legal & External Affairs	February 19, 2026	February 23, 2026
Westlake Chemical Partners LPWLKP · Entity 5149	Director · VP, General Counsel	March 23, 2020	March 23, 2020

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

WESTLAKE CORP

Report date February 19, 2026 · Filed February 23, 2026

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	Direct	80,158	Ending reported balance After 2026-02-20 transaction · row 2 2 source rows · reconciled sequence Row 1 · 2026-02-19 · Grant · Acquired 1,425 · Balance 80,515 F1: Represents shares of common stock that vested on February 19, 2026, upon the determination by the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 17, 2023, under the terms of the Issuer's 2013 Omnibus Incentive Plan. Row 2 · 2026-02-20 · Tax withholding · Disposed 357 · Balance 80,158 F2: Shares otherwise issuable were witheld to satisfy tax obligations arising out of vesting of the Reporting Person's PSUs. F3: Weighted average price. These shares were sold in multiple transactions at prices ranging from $94.10 to 94.38, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
Employee Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $94.48 · Expires 2036-02-20	Direct	25,656	Reported balance After 2026-02-20 transaction · row 3 Instrument identity requires review; Table II rows are not merged. 1 source row Row 3 · 2026-02-20 · Grant · Acquired 25,656 · Balance 25,656 F4: The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, respectively.
Restricted Stock UnitsSEC Table II · derivative / convertible security	Direct	7,002	Reported balance After 2026-02-20 transaction · row 4 Instrument identity requires review; Table II rows are not merged. 1 source row Row 4 · 2026-02-20 · Grant · Acquired 7,002 · Balance 7,002 F5: Each restricted stock unit ("RSU") represents a contingent right to recieve one share of the Issuer's common stock. F6: All of the RSUs will vest on February 20, 2029.

Filing footnotes · ownership attribution and instrument terms

F1: Represents shares of common stock that vested on February 19, 2026, upon the determination by the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 17, 2023, under the terms of the Issuer's 2013 Omnibus Incentive Plan.

F2: Shares otherwise issuable were witheld to satisfy tax obligations arising out of vesting of the Reporting Person's PSUs.

F3: Weighted average price. These shares were sold in multiple transactions at prices ranging from $94.10 to 94.38, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

F4: The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, respectively.

F5: Each restricted stock unit ("RSU") represents a contingent right to recieve one share of the Issuer's common stock.

F6: All of the RSUs will vest on February 20, 2029.

Westlake Chemical Partners LP

Report date March 23, 2020 · Filed March 23, 2020

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common Units (Limited Partner Interests)SEC Table I · non-derivative	Direct	12,000	Reported balance After 2020-03-23 transaction · row 1 1 source row Row 1 · 2020-03-23 · Purchase · Acquired 1,000 · Balance 12,000

Transaction history

JSON API

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	Company	Activity / security	Shares / units	Reported price	Reported value	Details
February 20, 2026 Filed Feb 23, 2026 19:44 UTC	WESTLAKE CORP WLK · Entity 3555	GrantRestricted Stock Units · Derivative	7,002	$0.00	$0.00	Disclosure SEC source: 0001193125-26-063700 · ownership.xml · derivative · entry 4 Ederington L. Benjamin · CIK 0001588279 · EVP, Legal & External Affairs 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,002 Underlying: Common Stock · 7,002 shares Expires not disclosed F5 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to recieve one share of the Issuer's common stock. F6 · derivative.exercise_date: All of the RSUs will vest on February 20, 2029. F6 · derivative.expiration_date: All of the RSUs will vest on February 20, 2029. Read SEC document
February 20, 2026 Filed Feb 23, 2026 19:44 UTC	WESTLAKE CORP WLK · Entity 3555	GrantEmployee Option (right to buy) · Derivative	25,656	$0.00 Strike: $94.48	$0.00	Disclosure SEC source: 0001193125-26-063700 · ownership.xml · derivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, Legal & External Affairs 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 25,656 Underlying: Common Stock · 25,656 shares Expires 2036-02-20 F4 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2027, 2028 and 2029, respectively. Read SEC document
February 20, 2026 Filed Feb 23, 2026 19:44 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	357	$94.10	$33,594.41	Disclosure SEC source: 0001193125-26-063700 · ownership.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, Legal & External Affairs 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 80,158 F2 · shares: Shares otherwise issuable were witheld to satisfy tax obligations arising out of vesting of the Reporting Person's PSUs. F3 · price: Weighted average price. These shares were sold in multiple transactions at prices ranging from $94.10 to 94.38, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. Read SEC document
February 19, 2026 Filed Feb 23, 2026 19:44 UTC	WESTLAKE CORP WLK · Entity 3555	GrantCommon Stock	1,425	$0.00	$0.00	Disclosure SEC source: 0001193125-26-063700 · ownership.xml · nonDerivative · entry 1 Ederington L. Benjamin · CIK 0001588279 · EVP, Legal & External Affairs 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 80,515 F1 · shares: Represents shares of common stock that vested on February 19, 2026, upon the determination by the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 17, 2023, under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document
February 18, 2026 Filed Feb 19, 2026 20:19 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	978	$98.95	$96,773.10	Disclosure SEC source: 0001193125-26-059215 · ownership.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, Legal & External Affairs 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 79,090 F3 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs. Read SEC document
February 17, 2026 Filed Feb 19, 2026 20:19 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionRestricted Stock Units · Derivative	3,809	$0.00	$0.00	Disclosure SEC source: 0001193125-26-059215 · ownership.xml · derivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, Legal & External Affairs 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 3,809 shares Expires not disclosed 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_price: Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: On February 17, 2023, the reporting person was granted 3,809 RSUs vesting on the third anniversay of the grant date. F2 · derivative.expiration_date: On February 17, 2023, the reporting person was granted 3,809 RSUs vesting on the third anniversay of the grant date. Read SEC document
February 17, 2026 Filed Feb 19, 2026 20:19 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionCommon Stock	3,809	$0.00	$0.00	Disclosure SEC source: 0001193125-26-059215 · ownership.xml · nonDerivative · entry 1 Ederington L. Benjamin · CIK 0001588279 · EVP, Legal & External Affairs 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 80,068 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 · price: Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. Read SEC document
February 21, 2025 Filed Feb 24, 2025 19:14 UTC	WESTLAKE CORP WLK · Entity 3555	GrantRestricted Stock Units · Derivative	5,777	$0.00	$0.00	Disclosure SEC source: 0000950170-25-025487 · ownership.xml · derivative · entry 4 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,777 Underlying: Common Stock · 5,777 shares Expires not disclosed F5 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to recieve one share of the Issuer's common stock. F6 · derivative.exercise_date: All of the RSUs will vest on February 21, 2028. F6 · derivative.expiration_date: All of the RSUs will vest on February 21, 2028. Read SEC document
February 21, 2025 Filed Feb 24, 2025 19:14 UTC	WESTLAKE CORP WLK · Entity 3555	GrantEmployee Option (right to buy) · Derivative	17,428	$0.00 Strike: $110.15	$0.00	Disclosure SEC source: 0000950170-25-025487 · ownership.xml · derivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,428 Underlying: Common Stock · 17,428 shares Expires 2035-02-21 F4 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 21, 2026, 2027 and 2028, respectively. Read SEC document
February 21, 2025 Filed Feb 24, 2025 19:14 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	2,924	$110.54	$323,218.96	Disclosure SEC source: 0000950170-25-025487 · ownership.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 76,259 F2 · shares: Shares otherwise issuable were witheld to satisfy tax obligations arising out of vesting of the Reporting Person's PSUs. F3 · price: Weighted average price. These shares were sold in multiple transactions at prices ranging from $110.54 to $111.26, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. Read SEC document
February 20, 2025 Filed Feb 24, 2025 19:14 UTC	WESTLAKE CORP WLK · Entity 3555	GrantCommon Stock	7,305	$0.00	$0.00	Disclosure SEC source: 0000950170-25-025487 · 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: 79,183 F1 · shares: Represents shares of common stock that vested on February 20, 2025, upon the determination by the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance stock units ("PSUs") granted to the Reporting Person on February 18, 2022, under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document
February 19, 2025 Filed Feb 20, 2025 19:40 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	216	$112.76	$24,356.16	Disclosure SEC source: 0000950170-25-024032 · ownership.xml · nonDerivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 71,878 F3 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs. Read SEC document
February 19, 2025 Filed Feb 20, 2025 19:40 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	5,052	$111.46	$563,095.92	Disclosure SEC source: 0000950170-25-024032 · ownership.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 72,094 F3 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs. Read SEC document
February 18, 2025 Filed Feb 19, 2025 14:18 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	1,895	$115.29	$218,474.55	Disclosure SEC source: 0000950170-25-022789 · ownership.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 63,972 F3 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs. Read SEC document
February 18, 2025 Filed Feb 20, 2025 19:40 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionRestricted Stock Units · Derivative	13,174	$0.00	$0.00	Disclosure SEC source: 0000950170-25-024032 · ownership.xml · derivative · entry 4 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 13,174 shares Expires not disclosed 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_price: Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: On February 18, 2022, the reporting person was granted 13,174 RSUs vesting on the third anniversay of the grant date. F2 · derivative.expiration_date: On February 18, 2022, the reporting person was granted 13,174 RSUs vesting on the third anniversay of the grant date. Read SEC document
February 18, 2025 Filed Feb 20, 2025 19:40 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionCommon Stock	13,174	$0.00	$0.00	Disclosure SEC source: 0000950170-25-024032 · 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: 77,146 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 · price: Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. Read SEC document
February 14, 2025 Filed Feb 19, 2025 14:18 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionRestricted Stock Units · Derivative	7,597	$0.00	$0.00	Disclosure SEC source: 0000950170-25-022789 · ownership.xml · derivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 7,597 shares Expires not disclosed 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_price: Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: On February 14, 2020, the reporting person was granted 7,597 RSUs vesting on the fifth anniversay of the grant date. F2 · derivative.expiration_date: On February 14, 2020, the reporting person was granted 7,597 RSUs vesting on the fifth anniversay of the grant date. Read SEC document
February 14, 2025 Filed Feb 19, 2025 14:18 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionCommon Stock	7,597	$0.00	$0.00	Disclosure SEC source: 0000950170-25-022789 · 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: 65,867 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 · price: Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. Read SEC document
August 14, 2024 Filed Aug 15, 2024 15:00 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	1,156	$145.44	$168,128.64	Disclosure SEC source: 0000950170-24-097403 · ownership.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 58,270 F2 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs. Read SEC document
August 13, 2024 Filed Aug 15, 2024 15:00 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionRestricted Stock Units · Derivative	2,938	$0.00	$0.00	Disclosure SEC source: 0000950170-24-097403 · ownership.xml · derivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,938 shares Expires not disclosed 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_price: Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. F3 · derivative.exercise_date: On August 13, 2021, the reporting person was granted 2,938 RSUs vesting on the third anniversay of the grant date. F3 · derivative.expiration_date: On August 13, 2021, the reporting person was granted 2,938 RSUs vesting on the third anniversay of the grant date. Read SEC document
August 13, 2024 Filed Aug 15, 2024 15:00 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionCommon Stock	2,938	$0.00	$0.00	Disclosure SEC source: 0000950170-24-097403 · 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: 59,426 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 · price: Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. Read SEC document
February 20, 2024 Filed Feb 21, 2024 15:29 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	411	$137.29	$56,427.42	Disclosure SEC source: 0000950170-24-017624 · ownership.xml · nonDerivative · entry 6 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,488 F3 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs and PSUs. F4 · price: Weighted average price. These shares were sold in multiple transactions at prices ranging from $137.24 to $137.33 inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. Read SEC document
February 20, 2024 Filed Feb 21, 2024 15:29 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	1	$135.28	$135.28	Disclosure SEC source: 0000950170-24-017624 · ownership.xml · nonDerivative · entry 5 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,899 F3 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs and PSUs. Read SEC document
February 20, 2024 Filed Feb 21, 2024 15:29 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	1	$135.27	$135.27	Disclosure SEC source: 0000950170-24-017624 · ownership.xml · nonDerivative · entry 4 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,900 F3 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs and PSUs. Read SEC document
February 20, 2024 Filed Feb 21, 2024 15:29 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	4,205	$129.92	$546,313.60	Disclosure SEC source: 0000950170-24-017624 · ownership.xml · nonDerivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,901 F3 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs and PSUs. Read SEC document
February 19, 2024 Filed Feb 21, 2024 15:29 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionRestricted Stock Units · Derivative	4,388	$0.00	$0.00	Disclosure SEC source: 0000950170-24-017624 · ownership.xml · derivative · entry 7 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 4,388 shares Expires not disclosed 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. F2 · derivative.exercise_price: Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. F5 · derivative.exercise_date: On February 19, 2021, the reporting person was granted 4,388 RSUs vesting on the third anniversay of the grant date. F5 · derivative.expiration_date: On February 19, 2021, the reporting person was granted 4,388 RSUs vesting on the third anniversay of the grant date. Read SEC document
February 19, 2024 Filed Feb 21, 2024 15:29 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionCommon Stock	4,388	$0.00	$0.00	Disclosure SEC source: 0000950170-24-017624 · ownership.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 61,106 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. F2 · price: Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. Read SEC document
February 16, 2024 Filed Feb 20, 2024 14:11 UTC	WESTLAKE CORP WLK · Entity 3555	GrantRestricted Stock Units · Derivative	3,953	$0.00	$0.00	Disclosure SEC 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	WESTLAKE CORP WLK · Entity 3555	GrantEmployee Option (right to buy) · Derivative	10,943	$0.00 Strike: $144.49	$0.00	Disclosure SEC 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 21, 2024 15:29 UTC	WESTLAKE CORP WLK · Entity 3555	GrantCommon Stock	8,802	$0.00	$0.00	Disclosure SEC 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
August 30, 2023 Filed Aug 31, 2023 15:37 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionEmployee Option (right to buy) · Derivative	13,734	$0.00 Strike: $61.87	$0.00	Disclosure SEC source: 0001209191-23-047809 · doc4.xml · derivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 13,734 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. F2 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020, respectively Read SEC document
August 30, 2023 Filed Aug 31, 2023 15:37 UTC	WESTLAKE CORP WLK · Entity 3555	Disposition to issuerCommon Stock	13,734	$134.27	$1,844,022.98	Disclosure SEC source: 0001209191-23-047809 · doc4.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, PEM, GC and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 47,916 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $134.18 to $134.60, 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
August 30, 2023 Filed Aug 31, 2023 15:37 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionCommon Stock	13,734	$61.87	$849,653.91	Disclosure SEC source: 0001209191-23-047809 · doc4.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: 61,650 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
May 12, 2023 Filed May 16, 2023 17:38 UTC	WESTLAKE CORP WLK · Entity 3555	GrantRestricted Stock Units · Derivative	21,940	$0.00	$0.00	Disclosure SEC source: 0001209191-23-029733 · doc4.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: 21,940 Underlying: Common Stock · 21,940 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock F2 · derivative.exercise_date: All of the restricted stock units will vest on May 12, 2028. F2 · derivative.expiration_date: All of the restricted stock units will vest on May 12, 2028. Read SEC document
March 13, 2023 Filed Mar 15, 2023 19:20 UTC Amendment	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	234	$105.29	$24,637.86	Disclosure SEC source: 0001567619-23-005098 · doc1.xml · nonDerivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 47,916 F1 · shares: The original Form 4 filed by the Reporting Person on February 17, 2023 is amended by this Form 4 Amendment to disclose that 4,636 shares of common stock were sold to cover tax withholding obligations arising from the award reported in the original Form 4. The original Form 4 did not report the sale to cover tax withholding obligations because the number of shares to be sold was not known at the time of filing. This Form 4 Amendment is in addition to, and does not replace, the disclosure contained in the original Form 4. Read SEC document
March 13, 2023 Filed Mar 15, 2023 19:20 UTC Amendment	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	4,402	$104.32	$459,216.64	Disclosure SEC source: 0001567619-23-005098 · doc1.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 48,150 F1 · shares: The original Form 4 filed by the Reporting Person on February 17, 2023 is amended by this Form 4 Amendment to disclose that 4,636 shares of common stock were sold to cover tax withholding obligations arising from the award reported in the original Form 4. The original Form 4 did not report the sale to cover tax withholding obligations because the number of shares to be sold was not known at the time of filing. This Form 4 Amendment is in addition to, and does not replace, the disclosure contained in the original Form 4. Read SEC document
February 17, 2023 Filed Feb 17, 2023 20:38 UTC	WESTLAKE CORP WLK · Entity 3555	GrantCommon Stock	11,022	$0.00	$0.00	Disclosure SEC source: 0001567619-23-003266 · doc1.xml · nonDerivative · entry 1 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 52,552 F1 · shares: Represents shares of common stock that vested upon the determination by the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance stock units granted to the Reporting Person on February 14, 2020 under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document
February 17, 2023 Filed Feb 21, 2023 14:09 UTC	WESTLAKE CORP WLK · Entity 3555	GrantRestricted Stock Units · Derivative	3,809	$0.00	$0.00	Disclosure SEC source: 0001567619-23-003372 · doc1.xml · derivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,809 Underlying: Common Stock · 3,809 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 17, 2026. F3 · derivative.expiration_date: All of the restricted stock units will vest on February 17, 2026. Read SEC document
February 17, 2023 Filed Feb 21, 2023 14:09 UTC	WESTLAKE CORP WLK · Entity 3555	GrantEmployee Option (right to buy) · Derivative	10,399	$0.00 Strike: $122.65	$0.00	Disclosure SEC source: 0001567619-23-003372 · doc1.xml · derivative · entry 1 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,399 Underlying: Common Stock · 10,399 shares Expires 2033-02-17 F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 17, 2024, 2025 and 2026, respectively. Read SEC document
February 17, 2023 Filed Mar 15, 2023 19:20 UTC Amendment	WESTLAKE CORP WLK · Entity 3555	GrantCommon Stock	11,022	$0.00	$0.00	Disclosure SEC source: 0001567619-23-005098 · doc1.xml · nonDerivative · entry 1 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 52,552 Read SEC document
February 15, 2023 Filed Feb 16, 2023 16:40 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	19	$122.51	$2,327.69	Disclosure SEC source: 0001567619-23-003135 · doc1.xml · nonDerivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 41,530 F2 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units. Read SEC document
February 15, 2023 Filed Feb 16, 2023 16:40 UTC	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	1,364	$121.86	$166,217.04	Disclosure SEC source: 0001567619-23-003135 · doc1.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 41,549 F2 · shares: Shares otherwise issuable were withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units. Read SEC document
February 14, 2023 Filed Feb 16, 2023 16:40 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionRestricted Stock Units · Derivative	5,495	$0.00	$0.00	Disclosure SEC source: 0001567619-23-003135 · doc1.xml · derivative · entry 4 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 5,495 shares Expires not disclosed 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_price: Restricted stock units convert into Issuer's shares of common stock on a one-for-one basis. F3 · derivative.exercise_date: On February 14, 2020, the reporting person was granted 5,495 restricted stock units vesting on the third anniversary of the grant date. F3 · derivative.expiration_date: On February 14, 2020, the reporting person was granted 5,495 restricted stock units vesting on the third anniversary of the grant date. Read SEC document
February 14, 2023 Filed Feb 16, 2023 16:40 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionCommon Stock	5,495	Not disclosed	Not disclosed	Disclosure SEC source: 0001567619-23-003135 · doc1.xml · nonDerivative · entry 1 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 42,913 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 · price: Restricted stock units convert into Issuer's shares of common stock on a one-for-one basis. Read SEC document
May 05, 2022 Filed May 6, 2022 11:24 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionEmployee Option (right to buy) · Derivative	12,569	$0.00 Strike: $44.42	$0.00	Disclosure SEC source: 0001567619-22-009646 · doc1.xml · derivative · entry 4 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 12,569 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. F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 18, 2017, 2018 and 2019. Read SEC document
May 05, 2022 Filed May 6, 2022 11:24 UTC	WESTLAKE CORP WLK · Entity 3555	SaleCommon Stock	3,143	$139.26	$437,694.18	Disclosure SEC source: 0001567619-22-009646 · doc1.xml · nonDerivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 37,418 Read SEC document
May 05, 2022 Filed May 6, 2022 11:24 UTC	WESTLAKE CORP WLK · Entity 3555	SaleCommon Stock	9,426	$140.00	$1,319,640.00	Disclosure SEC source: 0001567619-22-009646 · doc1.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 40,561 Read SEC document
May 05, 2022 Filed May 6, 2022 11:24 UTC	WESTLAKE CORP WLK · Entity 3555	Exercise / conversionCommon Stock	12,569	$44.42	$558,314.98	Disclosure SEC source: 0001567619-22-009646 · doc1.xml · nonDerivative · entry 1 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 49,987 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
March 14, 2022 Filed Mar 15, 2022 19:40 UTC Amendment	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	3	$120.45	$361.35	Disclosure SEC source: 0001567619-22-006983 · doc1.xml · nonDerivative · entry 3 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 37,418 F1 · shares: The original Form 4 filed by the Reporting Person on February 18, 2022 is amended by this Form 4 Amendment to disclose that 2,510 shares of common stock were sold to cover tax withholding obligations arising from the award reported in the original Form 4. The original Form 4 did not report the sale to cover tax withholding obligations because the number of shares to be sold was not known at the time of filing. This Form 4 Amendment is in addition to, and does not replace, the disclosure contained in the original Form 4. Read SEC document
March 14, 2022 Filed Mar 15, 2022 19:40 UTC Amendment	WESTLAKE CORP WLK · Entity 3555	Tax withholdingCommon Stock	2,507	$118.51	$297,104.57	Disclosure SEC source: 0001567619-22-006983 · doc1.xml · nonDerivative · entry 2 Ederington L. Benjamin · CIK 0001588279 · EVP, GC, CAO and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 37,421 F1 · shares: The original Form 4 filed by the Reporting Person on February 18, 2022 is amended by this Form 4 Amendment to disclose that 2,510 shares of common stock were sold to cover tax withholding obligations arising from the award reported in the original Form 4. The original Form 4 did not report the sale to cover tax withholding obligations because the number of shares to be sold was not known at the time of filing. This Form 4 Amendment is in addition to, and does not replace, the disclosure contained in the original Form 4. 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.