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 |
|---|---|---|---|---|---|---|
| May 18, 2018 Filed May 21, 2018 13:54 UTC |
BLAKELY ROBERT TDirector
|
GrantRestricted Stock Units · Derivative | 103 | $0.00 | $0.00 |
DisclosureSEC source: 0001140361-18-024824 · doc1.xml · derivative · entry 1 BLAKELY ROBERT T · CIK 0001218020 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 103 Underlying: Common Stock · 103 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 18, 2019. F2 · derivative.expiration_date: All of the restricted stock units will vest on May 18, 2019. Read SEC document |
| May 15, 2018 Filed May 16, 2018 14:16 UTC |
Buesinger Robert F.EVP, Vinyl Products
|
SaleCommon Stock | 1,447 | $118.88 | $172,012.13 |
DisclosureSEC source: 0001140361-18-024149 · doc1.xml · nonDerivative · entry 1 Buesinger Robert F. · CIK 0001488587 · EVP, Vinyl Products 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,642 Read SEC document |
| May 11, 2018 Filed May 14, 2018 13:38 UTC |
Bender Mark StevenEVP and CFO
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 6,680 | $0.00 Strike: $22.92 | $0.00 |
DisclosureSEC source: 0001140361-18-023144 · doc1.xml · derivative · entry 5 Bender Mark Steven · CIK 0001330417 · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 6,680 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. F3 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 18, 2012, 2013 and 2014, respectively. Read SEC document |
| May 11, 2018 Filed May 14, 2018 13:38 UTC |
Bender Mark StevenEVP and CFO
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 16,826 | $0.00 Strike: $30.05 | $0.00 |
DisclosureSEC source: 0001140361-18-023144 · 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 · 16,826 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. F2 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 17, 2013, 2014 and 2015, respectively. Read SEC document |
| May 11, 2018 Filed May 14, 2018 13:38 UTC |
Bender Mark StevenEVP and CFO
|
SaleCommon Stock | 23,506 | $117.33 | $2,757,958.98 |
DisclosureSEC source: 0001140361-18-023144 · doc1.xml · nonDerivative · entry 3 Bender Mark Steven · CIK 0001330417 · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 15,810 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $116.85 to $117.59, 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 |
| May 11, 2018 Filed May 14, 2018 13:38 UTC |
Bender Mark StevenEVP and CFO
|
Exercise / conversionCommon Stock | 6,680 | $22.92 | $153,072.20 |
DisclosureSEC source: 0001140361-18-023144 · doc1.xml · nonDerivative · entry 2 Bender Mark Steven · CIK 0001330417 · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 39,316 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 11, 2018 Filed May 14, 2018 13:38 UTC |
Bender Mark StevenEVP and CFO
|
Exercise / conversionCommon Stock | 16,826 | $30.05 | $505,663.37 |
DisclosureSEC source: 0001140361-18-023144 · doc1.xml · nonDerivative · entry 1 Bender Mark Steven · CIK 0001330417 · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 32,636 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 10, 2018 Filed May 11, 2018 15:33 UTC |
Jenkins Dorothy CDirector · 10% owner
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 7,652 | $0.00 Strike: $10.41 | $0.00 |
DisclosureSEC source: 0001140361-18-023026 · 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 · 7,652 shares Expires 2018-08-15 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. F1 · derivative.exercise_price: Values and amounts reflect the results of a two-for-one stock split on March 18, 2014. F2 · derivative.exercise_date: The stock options are exercisable in four equal installments on August 15, 2009, 2010, 2011 and 2012. Read SEC document |
| May 10, 2018 Filed May 11, 2018 15:33 UTC |
Jenkins Dorothy CDirector · 10% owner
|
SaleCommon Stock | 52 | $117.01 | $6,084.52 |
DisclosureSEC source: 0001140361-18-023026 · doc1.xml · nonDerivative · entry 2 Jenkins Dorothy C · CIK 0001299504 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 54,678 Read SEC document |
| May 10, 2018 Filed May 11, 2018 15:33 UTC |
Jenkins Dorothy CDirector · 10% owner
|
Exercise / conversionCommon Stock | 7,652 | $10.41 | $79,676.45 |
DisclosureSEC source: 0001140361-18-023026 · doc1.xml · nonDerivative · entry 1 Jenkins Dorothy C · CIK 0001299504 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 54,730 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 |
| April 30, 2018 Filed May 1, 2018 15:21 UTC |
Kearns Roger L.EVP, Vinyls Chemicals
|
GrantRestricted Stock Units · Derivative | 18,448 | $0.00 | $0.00 |
DisclosureSEC source: 0001140361-18-020771 · doc1.xml · derivative · entry 1 Kearns Roger L. · CIK 0001739128 · EVP, Vinyls Chemicals 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 18,448 Underlying: Common Stock · 18,448 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: The restricted stock units have a 2-year ratable vesting of 50% and will vest on April 30, 2019 and 2020, respectively. F2 · derivative.expiration_date: The restricted stock units have a 2-year ratable vesting of 50% and will vest on April 30, 2019 and 2020, respectively. Read SEC document |
| March 09, 2018 Filed Mar 12, 2018 12:13 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 3,412 | $0.00 Strike: $61.87 | $0.00 |
DisclosureSEC source: 0001140361-18-012990 · doc1.xml · derivative · entry 3 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,928 Underlying: Common Stock · 3,412 shares Expires 2027-02-17 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020. Read SEC document |
| March 09, 2018 Filed Mar 12, 2018 12:13 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
SaleCommon Stock | 6,028 | $120.00 | $723,360.00 |
DisclosureSEC source: 0001140361-18-012990 · doc1.xml · nonDerivative · entry 2 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 11,437 Read SEC document |
| March 09, 2018 Filed Mar 12, 2018 12:13 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
Exercise / conversionCommon Stock | 3,412 | $61.87 | $211,083.38 |
DisclosureSEC source: 0001140361-18-012990 · doc1.xml · nonDerivative · entry 1 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 17,465 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 05, 2018 Filed Mar 6, 2018 14:50 UTC |
Buesinger Robert F.EVP, Vinyl Products
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 4,261 | $0.00 Strike: $61.87 | $0.00 |
DisclosureSEC source: 0001140361-18-012224 · doc1.xml · derivative · entry 8 Buesinger Robert F. · CIK 0001488587 · EVP, Vinyl Products 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 8,652 Underlying: Common Stock · 4,261 shares Expires 2027-02-17 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020, respectively. Read SEC document |
| March 05, 2018 Filed Mar 6, 2018 14:50 UTC |
Buesinger Robert F.EVP, Vinyl Products
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 4,446 | $0.00 Strike: $44.42 | $0.00 |
DisclosureSEC source: 0001140361-18-012224 · doc1.xml · derivative · entry 7 Buesinger Robert F. · CIK 0001488587 · EVP, Vinyl Products 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,581 Underlying: Common Stock · 4,446 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. F2 · 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 |
| March 05, 2018 Filed Mar 6, 2018 14:50 UTC |
Buesinger Robert F.EVP, Vinyl Products
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 6,608 | $0.00 Strike: $68.09 | $0.00 |
DisclosureSEC source: 0001140361-18-012224 · doc1.xml · derivative · entry 6 Buesinger Robert F. · CIK 0001488587 · EVP, Vinyl Products 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 6,608 shares Expires 2025-02-20 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2016, 2017 and 2018, respectively. Read SEC document |
| March 05, 2018 Filed Mar 6, 2018 14:50 UTC |
Buesinger Robert F.EVP, Vinyl Products
|
SaleCommon Stock | 4,034 | $113.00 | $455,842.00 |
DisclosureSEC source: 0001140361-18-012224 · doc1.xml · nonDerivative · entry 5 Buesinger Robert F. · CIK 0001488587 · EVP, Vinyl Products 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,089 Read SEC document |
| March 05, 2018 Filed Mar 6, 2018 14:50 UTC |
Buesinger Robert F.EVP, Vinyl Products
|
SaleCommon Stock | 15,315 | $113.05 | $1,731,360.75 |
DisclosureSEC source: 0001140361-18-012224 · doc1.xml · nonDerivative · entry 4 Buesinger Robert F. · CIK 0001488587 · EVP, Vinyl Products 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 8,123 F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $113.00 to $113.10, 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 |
| March 05, 2018 Filed Mar 6, 2018 14:50 UTC |
Buesinger Robert F.EVP, Vinyl Products
|
Exercise / conversionCommon Stock | 4,261 | $61.87 | $263,606.77 |
DisclosureSEC source: 0001140361-18-012224 · doc1.xml · nonDerivative · entry 3 Buesinger Robert F. · CIK 0001488587 · EVP, Vinyl Products 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 23,438 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 05, 2018 Filed Mar 6, 2018 14:50 UTC |
Buesinger Robert F.EVP, Vinyl Products
|
Exercise / conversionCommon Stock | 4,446 | $44.42 | $197,491.32 |
DisclosureSEC source: 0001140361-18-012224 · doc1.xml · nonDerivative · entry 2 Buesinger Robert F. · CIK 0001488587 · EVP, Vinyl Products 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 19,177 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 05, 2018 Filed Mar 6, 2018 14:50 UTC |
Buesinger Robert F.EVP, Vinyl Products
|
Exercise / conversionCommon Stock | 6,608 | $68.09 | $449,938.72 |
DisclosureSEC source: 0001140361-18-012224 · doc1.xml · nonDerivative · entry 1 Buesinger Robert F. · CIK 0001488587 · EVP, Vinyl Products 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,731 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 05, 2018 Filed Mar 6, 2018 14:48 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 7,145 | $0.00 Strike: $44.42 | $0.00 |
DisclosureSEC source: 0001140361-18-012222 · doc1.xml · derivative · entry 9 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,682 Underlying: Common Stock · 7,145 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. F5 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 18, 2017, 2018 and 2019. Read SEC document |
| March 05, 2018 Filed Mar 6, 2018 14:48 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 6,007 | $0.00 Strike: $68.09 | $0.00 |
DisclosureSEC source: 0001140361-18-012222 · doc1.xml · derivative · entry 8 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 6,007 shares Expires 2025-02-20 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F4 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2016, 2017 and 2018. Read SEC document |
| March 05, 2018 Filed Mar 6, 2018 14:48 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 5,214 | $0.00 Strike: $63.98 | $0.00 |
DisclosureSEC source: 0001140361-18-012222 · doc1.xml · derivative · entry 7 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 5,214 shares Expires 2024-02-14 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 14, 2015, 2016 and 2017. Read SEC document |
| March 05, 2018 Filed Mar 6, 2018 14:48 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 5,952 | $0.00 Strike: $45.70 | $0.00 |
DisclosureSEC source: 0001140361-18-012222 · doc1.xml · derivative · entry 6 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 5,952 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. F2 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 15, 2014, 2015 and 2016. Read SEC document |
| March 05, 2018 Filed Mar 6, 2018 14:48 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
SaleCommon Stock | 24,318 | $110.61 | $2,689,813.98 |
DisclosureSEC source: 0001140361-18-012222 · doc1.xml · nonDerivative · entry 5 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,053 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $110.45 to $110.75, 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 |
| March 05, 2018 Filed Mar 6, 2018 14:48 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
Exercise / conversionCommon Stock | 7,145 | $44.42 | $317,380.90 |
DisclosureSEC source: 0001140361-18-012222 · doc1.xml · nonDerivative · entry 4 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 38,371 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 05, 2018 Filed Mar 6, 2018 14:48 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
Exercise / conversionCommon Stock | 6,007 | $68.09 | $409,016.63 |
DisclosureSEC source: 0001140361-18-012222 · doc1.xml · nonDerivative · entry 3 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 31,226 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 05, 2018 Filed Mar 6, 2018 14:48 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
Exercise / conversionCommon Stock | 5,214 | $63.98 | $333,578.69 |
DisclosureSEC source: 0001140361-18-012222 · doc1.xml · nonDerivative · entry 2 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 25,219 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 05, 2018 Filed Mar 6, 2018 14:48 UTC |
Kenner AndrewSVP - Chemical Manufacturing
|
Exercise / conversionCommon Stock | 5,952 | $45.70 | $271,991.52 |
DisclosureSEC source: 0001140361-18-012222 · doc1.xml · nonDerivative · entry 1 Kenner Andrew · CIK 0001439749 · SVP - Chemical Manufacturing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 20,005 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 05, 2018 Filed Mar 6, 2018 14:49 UTC |
Mangieri George JSVP & Chief Accounting Officer
|
SaleCommon Stock | 2,161 | $113.41 | $245,079.01 |
DisclosureSEC source: 0001140361-18-012223 · doc1.xml · nonDerivative · entry 1 Mangieri George J · CIK 0001298504 · SVP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,160 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $113.38 to $113.42, 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 28, 2018 Filed Mar 1, 2018 12:47 UTC |
Mangieri George JSVP & Chief Accounting Officer
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 1,036 | $0.00 Strike: $68.09 | $0.00 |
DisclosureSEC source: 0001140361-18-011121 · doc1.xml · derivative · entry 7 Mangieri George J · CIK 0001298504 · SVP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 1,036 shares Expires 2025-02-20 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2016, 2017 and 2018, respectively. Read SEC document |
| February 28, 2018 Filed Mar 1, 2018 12:47 UTC |
Mangieri George JSVP & Chief Accounting Officer
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 1,810 | $0.00 Strike: $44.42 | $0.00 |
DisclosureSEC source: 0001140361-18-011121 · doc1.xml · derivative · entry 6 Mangieri George J · CIK 0001298504 · SVP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,865 Underlying: Common Stock · 1,810 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. F2 · 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 |
| February 28, 2018 Filed Mar 1, 2018 12:47 UTC |
Mangieri George JSVP & Chief Accounting Officer
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 1,489 | $0.00 Strike: $61.87 | $0.00 |
DisclosureSEC source: 0001140361-18-011121 · doc1.xml · derivative · entry 5 Mangieri George J · CIK 0001298504 · SVP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,026 Underlying: Common Stock · 1,489 shares Expires 2027-02-17 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020, respectively. Read SEC document |
| February 28, 2018 Filed Mar 1, 2018 12:47 UTC |
Mangieri George JSVP & Chief Accounting Officer
|
SaleCommon Stock | 4,335 | $111.22 | $482,138.70 |
DisclosureSEC source: 0001140361-18-011121 · doc1.xml · nonDerivative · entry 4 Mangieri George J · CIK 0001298504 · SVP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,321 F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $111.2128 to $111.265, 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 28, 2018 Filed Mar 1, 2018 12:47 UTC |
Mangieri George JSVP & Chief Accounting Officer
|
Exercise / conversionCommon Stock | 1,036 | $68.09 | $70,541.24 |
DisclosureSEC source: 0001140361-18-011121 · doc1.xml · nonDerivative · entry 3 Mangieri George J · CIK 0001298504 · SVP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 8,656 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 |
| February 28, 2018 Filed Mar 1, 2018 12:47 UTC |
Mangieri George JSVP & Chief Accounting Officer
|
Exercise / conversionCommon Stock | 1,810 | $44.42 | $80,400.20 |
DisclosureSEC source: 0001140361-18-011121 · doc1.xml · nonDerivative · entry 2 Mangieri George J · CIK 0001298504 · SVP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,620 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 |
| February 28, 2018 Filed Mar 1, 2018 12:47 UTC |
Mangieri George JSVP & Chief Accounting Officer
|
Exercise / conversionCommon Stock | 1,489 | $61.87 | $92,116.99 |
DisclosureSEC source: 0001140361-18-011121 · doc1.xml · nonDerivative · entry 1 Mangieri George J · CIK 0001298504 · SVP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,810 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 |
| February 27, 2018 Filed Feb 28, 2018 16:36 UTC |
BLAKELY ROBERT TDirector
|
SaleCommon Stock | 4,038 | $111.00 | $448,218.00 |
DisclosureSEC source: 0001140361-18-010724 · doc1.xml · nonDerivative · entry 1 BLAKELY ROBERT T · CIK 0001218020 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,662 Read SEC document |
| February 26, 2018 Filed Feb 27, 2018 16:24 UTC |
Teel Lawrence E.EVP, Olefins
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 3,941 | $0.00 Strike: $44.42 | $0.00 |
DisclosureSEC source: 0001140361-18-010337 · doc1.xml · derivative · entry 7 Teel Lawrence E. · CIK 0001551480 · EVP, Olefins 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,060 Underlying: Common Stock · 3,941 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. Read SEC document |
| February 26, 2018 Filed Feb 27, 2018 16:24 UTC |
Teel Lawrence E.EVP, Olefins
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 3,412 | $0.00 Strike: $61.87 | $0.00 |
DisclosureSEC source: 0001140361-18-010337 · doc1.xml · derivative · entry 6 Teel Lawrence E. · CIK 0001551480 · EVP, Olefins 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,928 Underlying: Common Stock · 3,412 shares Expires 2027-02-17 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020. Read SEC document |
| February 26, 2018 Filed Feb 27, 2018 16:24 UTC |
Teel Lawrence E.EVP, Olefins
|
Exercise / conversionEmployee Option (right to buy) · Derivative | 1,998 | $0.00 Strike: $68.09 | $0.00 |
DisclosureSEC source: 0001140361-18-010337 · doc1.xml · derivative · entry 5 Teel Lawrence E. · CIK 0001551480 · EVP, Olefins 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 1,998 shares Expires 2025-02-20 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: The stock options are excercisable in three installments of 33%, 33% and 34% on February 20, 2016, 2017 and 2018. Read SEC document |
| February 26, 2018 Filed Feb 27, 2018 16:24 UTC |
Teel Lawrence E.EVP, Olefins
|
SaleCommon Stock | 9,351 | $111.86 | $1,046,002.86 |
DisclosureSEC source: 0001140361-18-010337 · doc1.xml · nonDerivative · entry 4 Teel Lawrence E. · CIK 0001551480 · EVP, Olefins 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,122 Read SEC document |
| February 26, 2018 Filed Feb 27, 2018 16:24 UTC |
Teel Lawrence E.EVP, Olefins
|
Exercise / conversionCommon Stock | 3,941 | $44.42 | $175,059.22 |
DisclosureSEC source: 0001140361-18-010337 · doc1.xml · nonDerivative · entry 3 Teel Lawrence E. · CIK 0001551480 · EVP, Olefins 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 11,473 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 |
| February 26, 2018 Filed Feb 27, 2018 16:24 UTC |
Teel Lawrence E.EVP, Olefins
|
Exercise / conversionCommon Stock | 3,412 | $61.87 | $211,083.38 |
DisclosureSEC source: 0001140361-18-010337 · doc1.xml · nonDerivative · entry 2 Teel Lawrence E. · CIK 0001551480 · EVP, Olefins 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,532 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 |
| February 26, 2018 Filed Feb 27, 2018 16:24 UTC |
Teel Lawrence E.EVP, Olefins
|
Exercise / conversionCommon Stock | 1,998 | $68.09 | $136,043.82 |
DisclosureSEC source: 0001140361-18-010337 · doc1.xml · nonDerivative · entry 1 Teel Lawrence E. · CIK 0001551480 · EVP, Olefins 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,120 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 |
| February 26, 2018 Filed Feb 27, 2018 16:23 UTC |
Bender Mark StevenEVP and CFO
|
SaleCommon Stock | 3,500 | $112.06 | $392,210.00 |
DisclosureSEC source: 0001140361-18-010336 · doc1.xml · nonDerivative · entry 2 Bender Mark Steven · CIK 0001330417 · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 15,810 F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $111.55 to $112.40, 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 26, 2018 Filed Feb 27, 2018 16:23 UTC |
Bender Mark StevenEVP and CFO
|
SaleCommon Stock | 1,500 | $110.84 | $166,260.00 |
DisclosureSEC source: 0001140361-18-010336 · doc1.xml · nonDerivative · entry 1 Bender Mark Steven · CIK 0001330417 · EVP and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 19,310 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $110.48 to $111.40, 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 22, 2018 Filed Feb 23, 2018 12:54 UTC |
LUKENS MAX LDirector
|
SaleCommon Stock | 100 | $111.41 | $11,141.00 |
DisclosureSEC source: 0001140361-18-009762 · doc1.xml · nonDerivative · entry 2 LUKENS MAX L · CIK 0001040101 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,280 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.