Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| WESTLAKE CORPWLK · Entity 3555 | Director · Executive Chairman | August 11, 2026 | August 11, 2026 |
| Westlake Chemical Partners LPWLKP · Entity 5149 | Director · President & CEO · 10% owner | March 24, 2020 | March 25, 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 August 11, 2026 · Filed August 11, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 642,880 |
Ending reported balance
After 2026-08-11 transaction · row 3
3 source rows · reconciled sequenceRow 1 · 2026-08-11 · Exercise / conversion · Acquired 38,873 · Balance 681,753 Row 2 · 2026-08-11 · Sale · Disposed 7,489 · Balance 674,264 F1: Weighted average price. These shares were sold in multiple transactions ranging from $79.02 to $80.01 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. Row 3 · 2026-08-11 · Sale · Disposed 31,384 · Balance 642,880 F2: Weighted average price. These shares were sold in multiple transactions ranging from $80.10 to $80.86 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 $61.87 · Expires 2027-02-17 | Direct | 38,873 |
Reported balance
After 2026-08-11 transaction · row 4
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 4 · 2026-08-11 · Exercise / conversion · Disposed 38,873 · Balance 38,873 F3: The stock options are exercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020, respectively. |
Filing footnotes · ownership attribution and instrument terms
F1: Weighted average price. These shares were sold in multiple transactions ranging from $79.02 to $80.01 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.
F2: Weighted average price. These shares were sold in multiple transactions ranging from $80.10 to $80.86 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.
F3: The stock options are exercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020, respectively.
Westlake Chemical Partners LP
Report date March 24, 2020 · Filed March 25, 2020
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common Units (Limited Partner Interests)SEC Table I · non-derivative | Direct | 166,435 |
Ending reported balance
After 2020-03-24 transaction · row 2
2 source rows · reconciled sequenceRow 1 · 2020-03-24 · Purchase · Acquired 3,200 · Balance 164,856 F1: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions ranging from $12.81 to $13.75, inclusive. The reporting person undertakes to provide to Westlake Chemical Partners LP, any security holder of Westlake Chemical Partners LP or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote. Row 2 · 2020-03-24 · Purchase · Acquired 1,579 · Balance 166,435 F2: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions ranging from $13.85 to $14.45, inclusive. The reporting person undertakes to provide to Westlake Chemical Partners LP, any security holder of Westlake Chemical Partners LP or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote. |
| Common Units (Limited Partner Interests)SEC Table I · non-derivative | Indirectby Trusts | 27,275 |
Reported balance
Holding disclosure · report date 2020-03-24 · row 3
Holding and transaction disclosures are not merged.
1 source rowRow 3 · Balance 27,275 |
| Common Units (Limited Partner Interests)SEC Table I · non-derivative | IndirectTTWF LP & TTWFGP LLC | 14,122,230 |
Reported balance
Holding disclosure · report date 2020-03-24 · row 4
Holding and transaction disclosures are not merged.
1 source rowRow 4 · Balance 14,122,230 F3: WPT LLC ("WPT") owns 14,122,230 common units ("Common Units") representing limited partner interests in the Issuer. Westlake Chemical Corporation ("Westlake") owns 100% of each of Westlake Olefins LLC ("Olefins"), Westlake Vinyl Corporation ("Vinyl") and Westlake Longview Corporation ("Longview"). Olefins owns 100% of Westlake Chemical Investments, lnc., which owns 84.25% of Westlake Polymers LLC ("Polymers"). Vinyl owns 100% of Westlake Vinyls, Inc., which owns 12.95% Polymers. Longview owns 2.80% of Polymers. Polymers owns 100% of WPT LLC. The reporting person may be deemed to indirectly own the Common Units through his ownership interest in TTWF LP, a Delaware limited partnership through which the reporting person indirectly holds 92,970,554 shares of Westlake. F4: Two trusts for the benefit of members of the Chao family, including the reporting person, are the managers of TTWF GP LLC, a Delaware limited liability company that is the general partner of TTWF LP. The limited partners of TTWF LP are five trusts, principally for the benefit of members of the Chao family, including the reporting person, and two corporations owned, indirectly or directly, by certain of these trusts and by other entities owned by members of the Chao family, including the reporting person. The reporting person shares investment and voting power with respect to the common units beneficially owned by TTWF LP. The reporting person disclaims beneficial ownership of the Common Units except to the extent of his pecuniary interest therein. |
Filing footnotes · ownership attribution and instrument terms
F1: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions ranging from $12.81 to $13.75, inclusive. The reporting person undertakes to provide to Westlake Chemical Partners LP, any security holder of Westlake Chemical Partners LP or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote.
F2: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions ranging from $13.85 to $14.45, inclusive. The reporting person undertakes to provide to Westlake Chemical Partners LP, any security holder of Westlake Chemical Partners LP or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote.
F3: WPT LLC ("WPT") owns 14,122,230 common units ("Common Units") representing limited partner interests in the Issuer. Westlake Chemical Corporation ("Westlake") owns 100% of each of Westlake Olefins LLC ("Olefins"), Westlake Vinyl Corporation ("Vinyl") and Westlake Longview Corporation ("Longview"). Olefins owns 100% of Westlake Chemical Investments, lnc., which owns 84.25% of Westlake Polymers LLC ("Polymers"). Vinyl owns 100% of Westlake Vinyls, Inc., which owns 12.95% Polymers. Longview owns 2.80% of Polymers. Polymers owns 100% of WPT LLC. The reporting person may be deemed to indirectly own the Common Units through his ownership interest in TTWF LP, a Delaware limited partnership through which the reporting person indirectly holds 92,970,554 shares of Westlake.
F4: Two trusts for the benefit of members of the Chao family, including the reporting person, are the managers of TTWF GP LLC, a Delaware limited liability company that is the general partner of TTWF LP. The limited partners of TTWF LP are five trusts, principally for the benefit of members of the Chao family, including the reporting person, and two corporations owned, indirectly or directly, by certain of these trusts and by other entities owned by members of the Chao family, including the reporting person. The reporting person shares investment and voting power with respect to the common units beneficially owned by TTWF LP. The reporting person disclaims beneficial ownership of the Common Units except to the extent of his pecuniary interest therein.
Transaction history
JSON APIPurchases/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 17, 2023 Filed Mar 15, 2023 19:18 UTC Amendment | WESTLAKE CORP WLK · Entity 3555 | GrantCommon Stock | 52,252 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-23-005096 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 542,124 Read SEC document |
| February 15, 2023 Filed Feb 16, 2023 16:39 UTC | WESTLAKE CORP WLK · Entity 3555 | Tax withholdingCommon Stock | 127 | $122.57 | $15,566.39 |
DisclosureSEC source: 0001567619-23-003133 · doc1.xml · nonDerivative · entry 3 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 489,872 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 16:39 UTC | WESTLAKE CORP WLK · Entity 3555 | Tax withholdingCommon Stock | 9,032 | $121.86 | $1,100,639.52 |
DisclosureSEC source: 0001567619-23-003133 · doc1.xml · nonDerivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 489,999 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 16:39 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionRestricted Stock Units · Derivative | 26,048 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-23-003133 · doc1.xml · derivative · entry 5 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 26,048 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 26,048 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 26,048 restricted stock units vesting on the third anniversary of the grant date. Read SEC document |
| February 14, 2023 Filed Feb 16, 2023 16:39 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionCommon Stock | 26,048 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-23-003133 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 499,031 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 19, 2022 Filed May 23, 2022 16:07 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionEmployee Option (right to buy) · Derivative | 37,876 | $0.00 Strike: $45.70 | $0.00 |
DisclosureSEC source: 0001567619-22-011458 · doc1.xml · derivative · entry 6 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 37,876 shares Expires 2023-02-15 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. F5 · derivative.exercise_date: The stock options are excercisable in three equal installments on February 15, 2014, 2015 and 2016. Read SEC document |
| May 19, 2022 Filed May 23, 2022 16:07 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 5,045 | $129.38 | $652,712.01 |
DisclosureSEC source: 0001567619-22-011458 · doc1.xml · nonDerivative · entry 4 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 472,983 F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $129.275 to $129.5, 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 |
| May 19, 2022 Filed May 23, 2022 16:07 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 20,815 | $130.20 | $2,710,019.33 |
DisclosureSEC source: 0001567619-22-011458 · doc1.xml · nonDerivative · entry 3 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 478,028 F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $129.557 to $130.53, 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 |
| May 19, 2022 Filed May 23, 2022 16:07 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 12,016 | $131.11 | $1,575,450.20 |
DisclosureSEC source: 0001567619-22-011458 · doc1.xml · nonDerivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 498,843 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $130.69 to $131.64, inclusive. The reporting person undertakes to provide to Westlake Corporation, any security holder of Westlake Chemical 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 |
| May 19, 2022 Filed May 23, 2022 16:07 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionCommon Stock | 37,876 | $45.70 | $1,730,838.51 |
DisclosureSEC source: 0001567619-22-011458 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 510,859 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 19:36 UTC Amendment | WESTLAKE CORP WLK · Entity 3555 | Tax withholdingCommon Stock | 12,138 | $118.51 | $1,438,474.38 |
DisclosureSEC source: 0001567619-22-006978 · doc1.xml · nonDerivative · entry 2 Chao Albert · CIK 0001299403 · Director · President and CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 472,983 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 12,138 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 18, 2022 Filed Feb 22, 2022 12:02 UTC | WESTLAKE CORP WLK · Entity 3555 | GrantRestricted Stock Units · Derivative | 17,972 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-22-005160 · doc1.xml · derivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 17,972 Underlying: Common Stock · 17,972 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 18, 2025. F3 · derivative.expiration_date: All of the restricted stock units will vest on February 18, 2025. Read SEC document |
| February 18, 2022 Filed Feb 22, 2022 12:02 UTC | WESTLAKE CORP WLK · Entity 3555 | GrantEmployee Option (right to buy) · Derivative | 56,819 | $0.00 Strike: $108.12 | $0.00 |
DisclosureSEC source: 0001567619-22-005160 · doc1.xml · derivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 56,819 Underlying: Common Stock · 56,819 shares Expires 2032-02-18 F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 18, 2023, 2024 and 2025, respectively. Read SEC document |
| February 18, 2022 Filed Feb 22, 2022 12:02 UTC | WESTLAKE CORP WLK · Entity 3555 | GrantCommon Stock | 30,577 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-22-005159 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President and CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 485,121 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 15, 2019 under the terms of the Issuer's 2013 Omnibus Incentive Plan. Read SEC document |
| February 18, 2022 Filed Mar 15, 2022 19:36 UTC Amendment | WESTLAKE CORP WLK · Entity 3555 | GrantCommon Stock | 30,577 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-22-006978 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President and CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 485,121 Read SEC document |
| February 16, 2022 Filed Feb 17, 2022 16:34 UTC | WESTLAKE CORP WLK · Entity 3555 | Tax withholdingCommon Stock | 27 | $105.97 | $2,861.16 |
DisclosureSEC source: 0001567619-22-004823 · doc1.xml · nonDerivative · entry 3 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 454,544 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 16, 2022 Filed Feb 17, 2022 16:34 UTC | WESTLAKE CORP WLK · Entity 3555 | Tax withholdingCommon Stock | 5,722 | $104.96 | $600,581.12 |
DisclosureSEC source: 0001567619-22-004823 · doc1.xml · nonDerivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 454,571 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, 2022 Filed Feb 17, 2022 16:34 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionRestricted Stock Units · Derivative | 18,354 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-22-004823 · doc1.xml · derivative · entry 5 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 18,354 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 15, 2019, the reporting person was granted 18,354 restricted stock units vesting on the third anniversary of the grant date. F3 · derivative.expiration_date: On February 15, 2019, the reporting person was granted 18,354 restricted stock units vesting on the third anniversary of the grant date. Read SEC document |
| February 15, 2022 Filed Feb 17, 2022 16:34 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionCommon Stock | 18,354 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-22-004823 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 460,293 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 |
| December 02, 2021 Filed Dec 6, 2021 15:49 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionEmployee Option (right to buy) · Derivative | 30,787 | $0.00 Strike: $30.05 | $0.00 |
DisclosureSEC source: 0001567619-21-021628 · doc1.xml · derivative · entry 7 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 30,787 shares Expires 2022-02-17 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 excercisable in three equal installments on February 17, 2013, 2014 and 2015. Read SEC document |
| December 02, 2021 Filed Dec 6, 2021 15:49 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 20,327 | $92.29 | $1,875,978.83 |
DisclosureSEC source: 0001567619-21-021628 · doc1.xml · nonDerivative · entry 5 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 441,939 F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $92.05 to $92.88, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| December 02, 2021 Filed Dec 6, 2021 15:49 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 7,585 | $91.52 | $694,179.20 |
DisclosureSEC source: 0001567619-21-021628 · doc1.xml · nonDerivative · entry 4 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 462,266 F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $90.99 to $91.98, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| December 02, 2021 Filed Dec 6, 2021 15:49 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 1,175 | $90.12 | $105,891.00 |
DisclosureSEC source: 0001567619-21-021628 · doc1.xml · nonDerivative · entry 3 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 469,851 F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $89.73 to $90.39, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| December 02, 2021 Filed Dec 6, 2021 15:49 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 1,700 | $89.25 | $151,725.00 |
DisclosureSEC source: 0001567619-21-021628 · doc1.xml · nonDerivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 471,026 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $88.64 to $89.58, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| December 02, 2021 Filed Dec 6, 2021 15:49 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionCommon Stock | 30,787 | $30.05 | $925,226.32 |
DisclosureSEC source: 0001567619-21-021628 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 472,726 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 |
| December 01, 2021 Filed Dec 3, 2021 12:56 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionEmployee Option (right to buy) · Derivative | 30,787 | $0.00 Strike: $30.05 | $0.00 |
DisclosureSEC source: 0001567619-21-021537 · doc1.xml · derivative · entry 9 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 30,787 Underlying: Common Stock · 30,787 shares Expires 2022-02-17 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. F7 · derivative.exercise_date: The stock options are excercisable in three equal installments on February 17, 2013, 2014 and 2015. Read SEC document |
| December 01, 2021 Filed Dec 3, 2021 12:56 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 3,789 | $94.80 | $359,197.20 |
DisclosureSEC source: 0001567619-21-021537 · doc1.xml · nonDerivative · entry 7 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 441,939 F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $94.43 to $95.36, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| December 01, 2021 Filed Dec 3, 2021 12:56 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 4,300 | $93.98 | $404,114.00 |
DisclosureSEC source: 0001567619-21-021537 · doc1.xml · nonDerivative · entry 6 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 445,728 F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $93.41 to $94.41, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| December 01, 2021 Filed Dec 3, 2021 12:56 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 4,200 | $92.78 | $389,676.00 |
DisclosureSEC source: 0001567619-21-021537 · doc1.xml · nonDerivative · entry 5 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 450,028 F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $92.31 to $93.26, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| December 01, 2021 Filed Dec 3, 2021 12:56 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 5,842 | $91.83 | $536,470.86 |
DisclosureSEC source: 0001567619-21-021537 · doc1.xml · nonDerivative · entry 4 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 454,228 F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $91.29 to $92.29, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| December 01, 2021 Filed Dec 3, 2021 12:56 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 3,000 | $90.47 | $271,410.00 |
DisclosureSEC source: 0001567619-21-021537 · doc1.xml · nonDerivative · entry 3 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 460,070 F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $90.14 to $91.13, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| December 01, 2021 Filed Dec 3, 2021 12:56 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 9,656 | $89.47 | $863,922.32 |
DisclosureSEC source: 0001567619-21-021537 · doc1.xml · nonDerivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 463,070 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $89.12 to $90.10, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| December 01, 2021 Filed Dec 3, 2021 12:56 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionCommon Stock | 30,787 | $30.05 | $925,226.32 |
DisclosureSEC source: 0001567619-21-021537 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 472,726 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 11, 2021 Filed Aug 12, 2021 15:44 UTC | WESTLAKE CORP WLK · Entity 3555 | PurchaseCommon Stock | 3,000 | $86.21 | $258,630.00 |
DisclosureSEC source: 0001567619-21-015170 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 441,939 Read SEC document |
| February 19, 2021 Filed Feb 22, 2021 13:31 UTC | WESTLAKE CORP WLK · Entity 3555 | GrantRestricted Stock Units · Derivative | 19,810 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-21-004533 · doc1.xml · derivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 19,810 Underlying: Common Stock · 19,810 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 19, 2024. F3 · derivative.expiration_date: All of the restricted stock units will vest on February 19, 2024. Read SEC document |
| February 19, 2021 Filed Feb 22, 2021 13:31 UTC | WESTLAKE CORP WLK · Entity 3555 | GrantEmployee Option (right to buy) · Derivative | 68,074 | $0.00 Strike: $86.54 | $0.00 |
DisclosureSEC source: 0001567619-21-004533 · doc1.xml · derivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 68,074 Underlying: Common Stock · 68,074 shares Expires 2031-02-19 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 |
| February 18, 2021 Filed Feb 18, 2021 22:29 UTC | WESTLAKE CORP WLK · Entity 3555 | Tax withholdingCommon Stock | 3,685 | $85.08 | $313,516.12 |
DisclosureSEC source: 0001567619-21-004433 · doc1.xml · nonDerivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 438,939 F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $85.06 to $85.71, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
| February 16, 2021 Filed Feb 17, 2021 19:44 UTC | WESTLAKE CORP WLK · Entity 3555 | Tax withholdingCommon Stock | 971 | $85.73 | $83,243.83 |
DisclosureSEC source: 0001567619-21-004220 · doc1.xml · nonDerivative · entry 3 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 430,641 Read SEC document |
| February 16, 2021 Filed Feb 17, 2021 19:44 UTC | WESTLAKE CORP WLK · Entity 3555 | Tax withholdingCommon Stock | 10 | $87.69 | $876.90 |
DisclosureSEC source: 0001567619-21-004220 · doc1.xml · nonDerivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 431,612 Read SEC document |
| February 16, 2021 Filed Feb 17, 2021 18:47 UTC | WESTLAKE CORP WLK · Entity 3555 | Tax withholdingCommon Stock | 971 | $85.73 | $83,243.83 |
DisclosureSEC source: 0001567619-21-004202 · doc1.xml · nonDerivative · entry 3 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 430,641 Read SEC document |
| February 16, 2021 Filed Feb 17, 2021 18:47 UTC | WESTLAKE CORP WLK · Entity 3555 | Tax withholdingCommon Stock | 10 | $87.69 | $876.90 |
DisclosureSEC source: 0001567619-21-004202 · doc1.xml · nonDerivative · entry 2 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 431,612 Read SEC document |
| February 16, 2021 Filed Feb 18, 2021 22:29 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionRestricted Stock Units · Derivative | 11,983 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-21-004433 · doc1.xml · derivative · entry 4 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 11,983 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. F2 · derivative.exercise_date: On February 16, 2018, the reporting person was granted 11,983 restricted stock units vesting on the third anniversary of the grant date. F2 · derivative.expiration_date: On February 16, 2018, the reporting person was granted 11,983 restricted stock units vesting on the third anniversary of the grant date. Read SEC document |
| February 16, 2021 Filed Feb 18, 2021 22:29 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionCommon Stock | 11,983 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-21-004433 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 442,624 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 |
| February 14, 2021 Filed Feb 17, 2021 19:44 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionRestricted Stock Units · Derivative | 3,966 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-21-004220 · doc1.xml · derivative · entry 5 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 3,966 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. F2 · derivative.exercise_date: On February 14, 2020, the reporting person was granted 3,966 restricted stock units vesting on the first anniversary of the grant date. F2 · derivative.expiration_date: On February 14, 2020, the reporting person was granted 3,966 restricted stock units vesting on the first anniversary of the grant date. Read SEC document |
| February 14, 2021 Filed Feb 17, 2021 19:44 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionCommon Stock | 3,966 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-21-004220 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 431,622 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 |
| February 14, 2021 Filed Feb 17, 2021 18:47 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionRestricted Stock Units · Derivative | 3,966 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-21-004202 · doc1.xml · derivative · entry 5 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 3,966 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. F2 · derivative.exercise_date: On February 14, 2020, the reporting person was granted 3,966 restricted stock units vesting on the first anniversary of the grant date. F2 · derivative.expiration_date: On February 14, 2020, the reporting person was granted 3,966 restricted stock units vesting on the first anniversary of the grant date. Read SEC document |
| February 14, 2021 Filed Feb 17, 2021 18:47 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionCommon Stock | 3,966 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-21-004202 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 431,622 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 |
| November 06, 2020 Filed Nov 10, 2020 15:05 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionEmployee Option (right to buy) · Derivative | 55,148 | $0.00 Strike: $22.92 | $0.00 |
DisclosureSEC source: 0001567619-20-019004 · doc1.xml · derivative · entry 7 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 55,148 shares Expires 2021-02-18 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. F5 · derivative.exercise_date: The stock options are excercisable in three equal installments on February 18, 2012, 2013 and 2014. Read SEC document |
| November 06, 2020 Filed Nov 10, 2020 15:05 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 4,198 | $75.12 | $315,353.76 |
DisclosureSEC source: 0001567619-20-019004 · doc1.xml · nonDerivative · entry 5 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 427,656 F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $74.96 to $75.23, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 06, 2020 Filed Nov 10, 2020 15:05 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 10,334 | $74.29 | $767,712.86 |
DisclosureSEC source: 0001567619-20-019004 · doc1.xml · nonDerivative · entry 4 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 431,854 F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $73.89 to $74.87, inclusive. The reporting person undertakes to provide to Westlake Chemical Corp., any security holder of Westlake Chemical Corp. 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 |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.