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 |
|---|---|---|---|---|---|---|
| November 06, 2020 Filed Nov 10, 2020 15:05 UTC |
Chao AlbertDirector · President & CEO · 10% owner
|
Exercise / conversionCommon Stock | 55,148 | $22.92 | $1,263,716.42 |
DisclosureSEC source: 0001567619-20-019004 · doc1.xml · nonDerivative · entry 1 Chao Albert · CIK 0001299403 · Director · President & CEO · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 482,804 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 06, 2020 Filed Nov 10, 2020 12:01 UTC |
Bender Mark StevenDirector · EVP and CFO
|
SaleCommon Stock | 1,600 | $74.79 | $119,671.04 |
DisclosureSEC source: 0001567619-20-018999 · doc1.xml · nonDerivative · entry 1 Bender Mark Steven · CIK 0001330417 · Director · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 27,882 Read SEC document |
| November 05, 2020 Filed Nov 6, 2020 16:54 UTC |
Bender Mark StevenEVP and CFO
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 24,996 | $0.00 Strike: $44.42 | $0.00 |
DisclosureSEC source: 0001567619-20-018814 · doc1.xml · derivative · entry 4 Bender Mark Steven · CIK 0001330417 · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 24,996 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. F3 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 18, 2017, 2018 and 2019, respectively. Read SEC document |
| November 05, 2020 Filed Nov 6, 2020 16:54 UTC |
Bender Mark StevenEVP and CFO
|
SaleCommon Stock | 420 | $74.54 | $31,306.80 |
DisclosureSEC source: 0001567619-20-018814 · doc1.xml · nonDerivative · entry 3 Bender Mark Steven · CIK 0001330417 · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 29,482 F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $74.47 to $74.59, 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 05, 2020 Filed Nov 6, 2020 16:54 UTC |
Bender Mark StevenEVP and CFO
|
SaleCommon Stock | 24,576 | $73.98 | $1,818,132.48 |
DisclosureSEC source: 0001567619-20-018814 · doc1.xml · nonDerivative · entry 2 Bender Mark Steven · CIK 0001330417 · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 29,902 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $73.45 to $74.44, 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 05, 2020 Filed Nov 6, 2020 16:54 UTC |
Bender Mark StevenEVP and CFO
|
Exercise / conversionCommon Stock | 24,996 | $44.42 | $1,110,322.32 |
DisclosureSEC source: 0001567619-20-018814 · doc1.xml · nonDerivative · entry 1 Bender Mark Steven · CIK 0001330417 · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 54,478 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 16, 2020 Filed Aug 17, 2020 16:20 UTC |
Chao David Tsung-HungDirector · 10% owner
|
Exercise / conversionRestricted Stock Units · Derivative | 2,387 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015592 · doc1.xml · derivative · entry 4 Chao David Tsung-Hung · CIK 0001726418 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,387 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 the Issuer's common stock on a one-for-one basis. F3 · derivative.exercise_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. F3 · derivative.expiration_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:20 UTC |
Chao David Tsung-HungDirector · 10% owner
|
Exercise / conversionCommon Stock | 2,387 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-20-015592 · doc1.xml · nonDerivative · entry 1 Chao David Tsung-Hung · CIK 0001726418 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,539 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 the Issuer's common stock on a one-for-one basis. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:21 UTC |
Graff Michael JDirector
|
Exercise / conversionRestricted Stock Units · Derivative | 2,387 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015594 · doc1.xml · derivative · entry 3 Graff Michael J · CIK 0001457009 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,387 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 the Issuer's common stock on a one-for-one basis. F3 · derivative.exercise_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. F3 · derivative.expiration_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:21 UTC |
Graff Michael JDirector
|
Exercise / conversionCommon Stock | 2,387 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-20-015594 · doc1.xml · nonDerivative · entry 1 Graff Michael J · CIK 0001457009 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 13,269 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 the Issuer's common stock on a one-for-one basis. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:25 UTC |
Sheets Jeffrey WayneDirector
|
Exercise / conversionRestricted Stock Units · Derivative | 2,387 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015600 · doc1.xml · derivative · entry 3 Sheets Jeffrey Wayne · CIK 0001447712 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,387 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 the Issuer's common stock on a one-for-one basis. F3 · derivative.exercise_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. F3 · derivative.expiration_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:25 UTC |
Sheets Jeffrey WayneDirector
|
Exercise / conversionCommon Stock | 2,387 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-20-015600 · doc1.xml · nonDerivative · entry 1 Sheets Jeffrey Wayne · CIK 0001447712 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,886 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 the Issuer's common stock on a one-for-one basis. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 12:22 UTC |
Jenkins Dorothy CDirector · 10% owner
|
Exercise / conversionRestricted Stock Units · Derivative | 2,387 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015596 · doc1.xml · derivative · entry 4 Jenkins Dorothy C · CIK 0001299504 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,387 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 the Issuer's common stock on a one-for-one basis. F3 · derivative.exercise_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. F3 · derivative.expiration_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 12:22 UTC |
Jenkins Dorothy CDirector · 10% owner
|
Exercise / conversionCommon Stock | 2,387 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-20-015596 · doc1.xml · nonDerivative · entry 1 Jenkins Dorothy C · CIK 0001299504 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 69,615 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 the Issuer's common stock on a one-for-one basis. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:24 UTC |
NORTHCUTT R BRUCEDirector
|
Exercise / conversionRestricted Stock Units · Derivative | 2,387 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015599 · doc1.xml · derivative · entry 3 NORTHCUTT R BRUCE · CIK 0001307964 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,387 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 the Issuer's common stock on a one-for-one basis. F3 · derivative.exercise_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. F3 · derivative.expiration_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:24 UTC |
NORTHCUTT R BRUCEDirector
|
Exercise / conversionCommon Stock | 2,387 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-20-015599 · doc1.xml · nonDerivative · entry 1 NORTHCUTT R BRUCE · CIK 0001307964 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 13,310 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 the Issuer's common stock on a one-for-one basis. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:23 UTC |
MCCOLLUM MARK ADirector
|
Exercise / conversionRestricted Stock Units · Derivative | 2,387 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015598 · doc1.xml · derivative · entry 3 MCCOLLUM MARK A · CIK 0001215888 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,387 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 the Issuer's common stock on a one-for-one basis. F3 · derivative.exercise_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. F3 · derivative.expiration_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:23 UTC |
MCCOLLUM MARK ADirector
|
Exercise / conversionCommon Stock | 2,387 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-20-015598 · doc1.xml · nonDerivative · entry 1 MCCOLLUM MARK A · CIK 0001215888 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,783 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 the Issuer's common stock on a one-for-one basis. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:22 UTC |
Haas MariusDirector
|
Exercise / conversionRestricted Stock Units · Derivative | 2,387 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015595 · doc1.xml · derivative · entry 3 Haas Marius · CIK 0001556683 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,387 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 the Issuer's common stock on a one-for-one basis. F3 · derivative.exercise_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. F3 · derivative.expiration_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:22 UTC |
Haas MariusDirector
|
Exercise / conversionCommon Stock | 2,387 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-20-015595 · doc1.xml · nonDerivative · entry 1 Haas Marius · CIK 0001556683 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,886 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 the Issuer's common stock on a one-for-one basis. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:21 UTC |
Chao John Tsung-chenDirector · 10% owner
|
Exercise / conversionRestricted Stock Units · Derivative | 2,387 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015593 · doc1.xml · derivative · entry 4 Chao John Tsung-chen · CIK 0001746472 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,387 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 the Issuer's common stock on a one-for-one basis. F3 · derivative.exercise_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. F3 · derivative.expiration_date: On August 16, 2019 the reporting person was granted 2,387 restricted stock units vesting on the first anniversary of the grant date. Read SEC document |
| August 16, 2020 Filed Aug 17, 2020 16:21 UTC |
Chao John Tsung-chenDirector · 10% owner
|
Exercise / conversionCommon Stock | 2,387 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-20-015593 · doc1.xml · nonDerivative · entry 1 Chao John Tsung-chen · CIK 0001746472 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,796 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 the Issuer's common stock on a one-for-one basis. Read SEC document |
| August 14, 2020 Filed Aug 17, 2020 16:20 UTC |
Chao David Tsung-HungDirector · 10% owner
|
GrantRestricted Stock Units · Derivative | 2,400 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015592 · doc1.xml · derivative · entry 3 Chao David Tsung-Hung · CIK 0001726418 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,400 Underlying: Common Stock · 2,400 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: All of the restricted stock units will vest on August 14, 2021. F2 · derivative.expiration_date: All of the restricted stock units will vest on August 14, 2021. Read SEC document |
| August 14, 2020 Filed Aug 17, 2020 16:21 UTC |
Graff Michael JDirector
|
GrantRestricted Stock Units · Derivative | 2,400 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015594 · doc1.xml · derivative · entry 2 Graff Michael J · CIK 0001457009 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,400 Underlying: Common Stock · 2,400 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: All of the restricted stock units will vest on August 14, 2021. F2 · derivative.expiration_date: All of the restricted stock units will vest on August 14, 2021. Read SEC document |
| August 14, 2020 Filed Aug 17, 2020 16:23 UTC |
Lubel Kimberly SDirector
|
GrantRestricted Stock Units · Derivative | 2,400 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015597 · doc1.xml · derivative · entry 1 Lubel Kimberly S · CIK 0001448219 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,400 Underlying: Common Stock · 2,400 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: All of the restricted stock units will vest on August 14, 2021. F2 · derivative.expiration_date: All of the restricted stock units will vest on August 14, 2021. Read SEC document |
| August 14, 2020 Filed Aug 17, 2020 16:25 UTC |
Sheets Jeffrey WayneDirector
|
GrantRestricted Stock Units · Derivative | 2,400 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015600 · doc1.xml · derivative · entry 2 Sheets Jeffrey Wayne · CIK 0001447712 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,400 Underlying: Common Stock · 2,400 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: All of the restricted stock units will vest on August 14, 2021. F2 · derivative.expiration_date: All of the restricted stock units will vest on August 14, 2021. Read SEC document |
| August 14, 2020 Filed Aug 17, 2020 12:22 UTC |
Jenkins Dorothy CDirector · 10% owner
|
GrantRestricted Stock Units · Derivative | 2,400 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015596 · doc1.xml · derivative · entry 3 Jenkins Dorothy C · CIK 0001299504 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,400 Underlying: Common Stock · 2,400 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: All of the restricted stock units will vest on August 14, 2021. F2 · derivative.expiration_date: All of the restricted stock units will vest on August 14, 2021. Read SEC document |
| August 14, 2020 Filed Aug 17, 2020 16:24 UTC |
NORTHCUTT R BRUCEDirector
|
GrantRestricted Stock Units · Derivative | 2,400 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015599 · doc1.xml · derivative · entry 2 NORTHCUTT R BRUCE · CIK 0001307964 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,400 Underlying: Common Stock · 2,400 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: All of the restricted stock units will vest on August 14, 2021. F2 · derivative.expiration_date: All of the restricted stock units will vest on August 14, 2021. Read SEC document |
| August 14, 2020 Filed Aug 17, 2020 16:23 UTC |
MCCOLLUM MARK ADirector
|
GrantRestricted Stock Units · Derivative | 2,400 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015598 · doc1.xml · derivative · entry 2 MCCOLLUM MARK A · CIK 0001215888 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,400 Underlying: Common Stock · 2,400 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: All of the restricted stock units will vest on August 14, 2021. F2 · derivative.expiration_date: All of the restricted stock units will vest on August 14, 2021. Read SEC document |
| August 14, 2020 Filed Aug 17, 2020 16:22 UTC |
Haas MariusDirector
|
GrantRestricted Stock Units · Derivative | 2,400 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015595 · doc1.xml · derivative · entry 2 Haas Marius · CIK 0001556683 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,400 Underlying: Common Stock · 2,400 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: All of the restricted stock units will vest on August 14, 2021. F2 · derivative.expiration_date: All of the restricted stock units will vest on August 14, 2021. Read SEC document |
| August 14, 2020 Filed Aug 17, 2020 16:21 UTC |
Chao John Tsung-chenDirector · 10% owner
|
GrantRestricted Stock Units · Derivative | 2,400 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-015593 · doc1.xml · derivative · entry 3 Chao John Tsung-chen · CIK 0001746472 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,400 Underlying: Common Stock · 2,400 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units convert into the Issuer's common stock on a one-for-one basis. F2 · derivative.exercise_date: All of the restricted stock units will vest on August 14, 2021. F2 · derivative.expiration_date: All of the restricted stock units will vest on August 14, 2021. Read SEC document |
| May 15, 2020 Filed May 18, 2020 11:12 UTC |
Lubel Kimberly SDirector
|
GrantRestricted Stock Units · Derivative | 3,780 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-010625 · doc1.xml · derivative · entry 1 Lubel Kimberly S · CIK 0001448219 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,780 Underlying: Common Stock · 3,780 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 15, 2021. F2 · derivative.expiration_date: All of the restricted stock units will vest on May 15, 2021. Read SEC document |
| April 30, 2020 Filed May 1, 2020 11:46 UTC |
Kearns Roger L.EVP, Vinyls Chemicals
|
Exercise / conversionRestricted Stock Units · Derivative | 9,224 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-20-008720 · doc1.xml · derivative · entry 2 Kearns Roger L. · CIK 0001739128 · EVP, Vinyls Chemicals 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 9,224 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 April 30, 2018, the reporting person was granted 18,448 restricted stock units vesting in two equal installments on the first and second anniversary of the grant date. F2 · derivative.expiration_date: On April 30, 2018, the reporting person was granted 18,448 restricted stock units vesting in two equal installments on the first and second anniversary of the grant date. Read SEC document |
| April 30, 2020 Filed May 1, 2020 11:46 UTC |
Kearns Roger L.EVP, Vinyls Chemicals
|
Exercise / conversionCommon Stock | 9,224 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001567619-20-008720 · doc1.xml · nonDerivative · entry 1 Kearns Roger L. · CIK 0001739128 · EVP, Vinyls Chemicals 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 23,448 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 |
| March 27, 2020 Filed Mar 30, 2020 08:51 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 11,287 | $40.31 | $454,978.97 |
DisclosureSEC source: 0001567619-20-007143 · doc1.xml · nonDerivative · entry 4 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,400,277 F4 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $40.01 to $40.60, 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 purchased at each separate price within the ranges set forth in this footnote. F5 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 27, 2020 Filed Mar 30, 2020 08:51 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 89,443 | $39.49 | $3,532,104.07 |
DisclosureSEC source: 0001567619-20-007143 · doc1.xml · nonDerivative · entry 3 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,388,990 F3 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $39.00 to $40.00, 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 purchased at each separate price within the ranges set forth in this footnote. F5 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 27, 2020 Filed Mar 30, 2020 08:51 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 42,295 | $38.49 | $1,627,934.55 |
DisclosureSEC source: 0001567619-20-007143 · doc1.xml · nonDerivative · entry 2 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,299,547 F2 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $37.99 to $38.99, 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 purchased at each separate price within the ranges set forth in this footnote. F5 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 27, 2020 Filed Mar 30, 2020 08:51 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 16,975 | $37.58 | $637,920.50 |
DisclosureSEC source: 0001567619-20-007143 · doc1.xml · nonDerivative · entry 1 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,257,252 F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $36.98 to $37.98, 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 purchased at each separate price within the ranges set forth in this footnote. F5 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 27, 2020 Filed Aug 20, 2020 14:09 UTC Amendment |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 160,000 | $39.08 | $6,252,800.00 |
DisclosureSEC source: 0001567619-20-015789 · doc1.xml · nonDerivative · entry 9 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,395,000 F11 · price: Reflects the average price of shares purchased March 27, 2020. Each line in Table I of the original Form 4, filed March 30, 2020, correctly aggregated purchases within a $1.00 price range. F2 · balance_after: Amended to reflect total direct ownership of Issuer shares as of the original Form 4 filing date. Purchases reported on and after March 16, 2020 were erroneously added to existing indirect holdings. These indirect holdings of 46,005,227 (which correspond to a post stock-split total of 92,010,554 shares) are owned by TTWF LP and further described by footnote 12 below. F3 · ownership.direct: Erroneously reported as indirect holdings. Amended to reflect direct ownership. Read SEC document |
| March 26, 2020 Filed Mar 27, 2020 11:03 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 8,800 | $41.99 | $369,512.00 |
DisclosureSEC source: 0001567619-20-007073 · doc1.xml · nonDerivative · entry 3 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,240,277 F3 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $41.79 to $42.13, 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 purchased at each separate price within the ranges set forth in this footnote. F4 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 26, 2020 Filed Mar 27, 2020 11:03 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 94,001 | $41.15 | $3,868,141.15 |
DisclosureSEC source: 0001567619-20-007073 · doc1.xml · nonDerivative · entry 2 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,231,477 F2 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $40.78 to $41.78, 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 purchased at each separate price within the ranges set forth in this footnote. F4 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 26, 2020 Filed Mar 27, 2020 11:03 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 42,199 | $40.47 | $1,707,793.53 |
DisclosureSEC source: 0001567619-20-007073 · doc1.xml · nonDerivative · entry 1 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,137,476 F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $39.77 to $40.77, 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 purchased at each separate price within the ranges set forth in this footnote. F4 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 26, 2020 Filed Aug 20, 2020 14:09 UTC Amendment |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 145,000 | $41.00 | $5,945,000.00 |
DisclosureSEC source: 0001567619-20-015789 · doc1.xml · nonDerivative · entry 8 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,235,000 F10 · price: Reflects the average price of shares purchased March 26, 2020. The original Form 4, filed March 27, 2020, provides weighted average pricing for each transaction within a $1.00 threshold in column 4 and related footnotes. F2 · balance_after: Amended to reflect total direct ownership of Issuer shares as of the original Form 4 filing date. Purchases reported on and after March 16, 2020 were erroneously added to existing indirect holdings. These indirect holdings of 46,005,227 (which correspond to a post stock-split total of 92,010,554 shares) are owned by TTWF LP and further described by footnote 12 below. F3 · ownership.direct: Erroneously reported as indirect holdings. Amended to reflect direct ownership. Read SEC document |
| March 25, 2020 Filed Mar 26, 2020 09:30 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 24,064 | $42.69 | $1,027,292.16 |
DisclosureSEC source: 0001567619-20-007010 · doc1.xml · nonDerivative · entry 6 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,095,277 F6 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $42.45 to $43.03, 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 purchased at each separate price within the ranges set forth in this footnote. F7 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 25, 2020 Filed Mar 26, 2020 09:30 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 33,358 | $42.02 | $1,401,703.16 |
DisclosureSEC source: 0001567619-20-007010 · doc1.xml · nonDerivative · entry 5 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,071,213 F5 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $41.44 to $42.44, 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 purchased at each separate price within the ranges set forth in this footnote. F7 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 25, 2020 Filed Mar 26, 2020 09:30 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 14,025 | $40.96 | $574,464.00 |
DisclosureSEC source: 0001567619-20-007010 · doc1.xml · nonDerivative · entry 4 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,037,855 F4 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $40.43 to $41.43, 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 purchased at each separate price within the ranges set forth in this footnote. F7 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 25, 2020 Filed Mar 26, 2020 09:30 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 27,671 | $39.83 | $1,102,135.93 |
DisclosureSEC source: 0001567619-20-007010 · doc1.xml · nonDerivative · entry 3 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 47,023,830 F3 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $39.38 to $40.33, 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 purchased at each separate price within the ranges set forth in this footnote. F7 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 25, 2020 Filed Mar 26, 2020 09:30 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 24,231 | $38.87 | $941,858.97 |
DisclosureSEC source: 0001567619-20-007010 · doc1.xml · nonDerivative · entry 2 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 46,996,159 F2 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $38.37 to $39.37, 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 purchased at each separate price within the ranges set forth in this footnote. F7 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 25, 2020 Filed Mar 26, 2020 09:30 UTC |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 6,651 | $37.98 | $252,604.98 |
DisclosureSEC source: 0001567619-20-007010 · doc1.xml · nonDerivative · entry 1 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 46,971,928 F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $37.34 to $38.32, 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 purchased at each separate price within the ranges set forth in this footnote. F7 · ownership.nature: TTWFGP LLC is the general partner of TTWF LP, the record holder of the securities listed in Table 1. Reporting Person has no direct pecuniary interest in the securities in Table 1. Reporting Person may be deemed to beneficially own an indirect pecuniary interest in the securities in Table 1. Read SEC document |
| March 25, 2020 Filed Aug 20, 2020 14:09 UTC Amendment |
TTWFGP LLC10% owner
|
PurchaseCommon Stock | 130,000 | $40.77 | $5,300,100.00 |
DisclosureSEC source: 0001567619-20-015789 · doc1.xml · nonDerivative · entry 7 TTWFGP LLC · CIK 0001299599 · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,090,000 F9 · price: Reflects the average price of shares purchased March 25, 2020. Each line in Table I of the original Form 4, filed March 26, 2020, correctly aggregated purchases within a $1.00 price range. F2 · balance_after: Amended to reflect total direct ownership of Issuer shares as of the original Form 4 filing date. Purchases reported on and after March 16, 2020 were erroneously added to existing indirect holdings. These indirect holdings of 46,005,227 (which correspond to a post stock-split total of 92,010,554 shares) are owned by TTWF LP and further described by footnote 12 below. F3 · ownership.direct: Erroneously reported as indirect holdings. Amended to reflect direct ownership. 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.