Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| WESTLAKE CORPWLK · Entity 3555 | EVP, PEM Segment Head | March 30, 2026 | March 31, 2026 |
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 March 30, 2026 · Filed March 31, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 34,482 |
Reported balance
After 2026-03-27 transaction · row 1
1 source rowRow 1 · 2026-03-27 · Sale · Disposed 4,000 · Balance 34,482 |
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 |
|---|---|---|---|---|---|---|
| December 01, 2016 Filed Dec 5, 2016 16:06 UTC | WESTLAKE CORP WLK · Entity 3555 | GrantRestricted Stock Units · Derivative | 4,995 | $0.00 | $0.00 |
DisclosureSEC source: 0001140361-16-088816 · doc1.xml · derivative · entry 1 Buesinger Robert F. · CIK 0001488587 · Sr. Vice President, Vinyls 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,995 Underlying: Common Stock · 4,995 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Westlake Chemical Corporation common stock. F2 · derivative.exercise_date: The restricted stock units will vest three years from the date of grant (December 1, 2019). F2 · derivative.expiration_date: The restricted stock units will vest three years from the date of grant (December 1, 2019). Read SEC document |
| November 10, 2016 Filed Nov 14, 2016 16:12 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionEmployee Option (right to buy) · Derivative | 2,880 | $0.00 Strike: $30.05 | $0.00 |
DisclosureSEC source: 0001140361-16-086416 · doc1.xml · derivative · entry 3 Buesinger Robert F. · CIK 0001488587 · Sr. Vice President, Vinyls 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,880 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. F1 · derivative.exercise_date: The stock options are exercisable in three installments of 33%, 33% and 34% on February 17, 2013, 2014 and 2015, respectively. Read SEC document |
| November 10, 2016 Filed Nov 14, 2016 16:12 UTC | WESTLAKE CORP WLK · Entity 3555 | SaleCommon Stock | 2,880 | $54.42 | $156,737.09 |
DisclosureSEC source: 0001140361-16-086416 · doc1.xml · nonDerivative · entry 2 Buesinger Robert F. · CIK 0001488587 · Sr. Vice President, Vinyls 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 8,155 Read SEC document |
| November 10, 2016 Filed Nov 14, 2016 16:12 UTC | WESTLAKE CORP WLK · Entity 3555 | Exercise / conversionCommon Stock | 2,880 | $30.05 | $86,551.20 |
DisclosureSEC source: 0001140361-16-086416 · doc1.xml · nonDerivative · entry 1 Buesinger Robert F. · CIK 0001488587 · Sr. Vice President, Vinyls 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 11,035 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 |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.