Darby Tommy
VP And CAO
Award
Calculated transaction value
$0
1,791 shares @ $0
Traded
Aug 31, 2026
Filed
Sep 1, 2026
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Westlake Corporation
WLK
ManufacturingChemicals
Transactions reported in official disclosures
Price with disclosed trades
Daily closes, past year · marks sit on transaction dates, sized by value
34 trades
| Reporting person | Filed | Transaction | Transaction value | Source | Actions |
|---|---|---|---|---|---|
| Darby Tommy VP And CAO | Sep 1, 2026 1-day lag | Award Aug 31, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Sheets Jeffrey Wayne Director | Aug 17, 2026 3-day lag | Award Aug 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Sabat Carolyn Chao Director | Aug 17, 2026 3-day lag | Award Aug 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Patel Bhavesh V. Director | Aug 17, 2026 3-day lag | Award Aug 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Northcutt R Bruce Director | Aug 17, 2026 3-day lag | Award Aug 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Mccollum Mark A Director | Aug 17, 2026 3-day lag | Award Aug 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Lubel Kimberly S Director | Aug 17, 2026 3-day lag | Award Aug 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Graff Michael J Director | Aug 17, 2026 3-day lag | Award Aug 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Cregg Roger A Director | Aug 17, 2026 3-day lag | Award Aug 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Chao David Tsung-hung Director | Aug 17, 2026 3-day lag | Award Aug 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Chao Catherine T. Director | Aug 17, 2026 3-day lag | Award Aug 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Chao Albert Executive Chairman | Aug 11, 2026 Same-day filing | Sale Aug 11, 2026 | $2.52M Filed shares x price | SEC Form 4 View filing | |
| Chao Albert Executive Chairman | Aug 11, 2026 Same-day filing | Sale Aug 11, 2026 | $596.87K Filed shares x price | SEC Form 4 View filing | |
| Chao Albert Executive Chairman | Aug 11, 2026 Same-day filing | Exercise Aug 11, 2026 | $2.4M Filed shares x price | SEC Form 4 View filing | |
| Chao Albert Executive Chairman | Aug 11, 2026 Same-day filing | Exercise Aug 11, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Sheets Jeffrey Wayne Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Sheets Jeffrey Wayne Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Sabat Carolyn Chao Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Sabat Carolyn Chao Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Northcutt R Bruce Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Northcutt R Bruce Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Mccollum Mark A Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Mccollum Mark A Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Lubel Kimberly S Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Lubel Kimberly S Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Graff Michael J Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Graff Michael J Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Cregg Roger A Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Cregg Roger A Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Chao David Tsung-hung Director | Aug 10, 2026 2-day lag | Exercise Aug 8, 2026 | Not reported Reported range | SEC Form 4 View filing |
Sheets Jeffrey Wayne
Director
Award
Calculated transaction value
$0
2,184 shares @ $0
Traded
Aug 14, 2026
Filed
Aug 17, 2026
Sabat Carolyn Chao
Director
Award
Calculated transaction value
$0
2,184 shares @ $0
Traded
Aug 14, 2026
Filed
Aug 17, 2026
Patel Bhavesh V.
Director
Award
Calculated transaction value
$0
2,184 shares @ $0
Traded
Aug 14, 2026
Filed
Aug 17, 2026
Northcutt R Bruce
Director
Award
Calculated transaction value
$0
2,184 shares @ $0
Traded
Aug 14, 2026
Filed
Aug 17, 2026
Mccollum Mark A
Director
Award
Calculated transaction value
$0
2,184 shares @ $0
Traded
Aug 14, 2026
Filed
Aug 17, 2026
Lubel Kimberly S
Director
Award
Calculated transaction value
$0
2,184 shares @ $0
Traded
Aug 14, 2026
Filed
Aug 17, 2026
Graff Michael J
Director
Award
Calculated transaction value
$0
2,184 shares @ $0
Traded
Aug 14, 2026
Filed
Aug 17, 2026
Cregg Roger A
Director
Award
Calculated transaction value
$0
2,184 shares @ $0
Traded
Aug 14, 2026
Filed
Aug 17, 2026
Chao David Tsung-hung
Director
Award
Calculated transaction value
$0
2,184 shares @ $0
Traded
Aug 14, 2026
Filed
Aug 17, 2026
Chao Catherine T.
Director
Award
Calculated transaction value
$0
2,184 shares @ $0
Traded
Aug 14, 2026
Filed
Aug 17, 2026
Chao Albert
Executive Chairman
Sale
Calculated transaction value
$2.52M
31,384 shares @ $80.42
Traded
Aug 11, 2026
Filed
Aug 11, 2026
Chao Albert
Executive Chairman
Sale
Calculated transaction value
$596.87K
7,489 shares @ $79.7
Traded
Aug 11, 2026
Filed
Aug 11, 2026
Chao Albert
Executive Chairman
Exercise
Calculated transaction value
$2.4M
38,873 shares @ $61.87
Traded
Aug 11, 2026
Filed
Aug 11, 2026
Chao Albert
Executive Chairman
Exercise
Calculated transaction value
$0
38,873 shares @ $0
Traded
Aug 11, 2026
Filed
Aug 11, 2026
Sheets Jeffrey Wayne
Director
Exercise
Calculated transaction value
$0
2,168 shares @ $0
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Sheets Jeffrey Wayne
Director
Exercise
Reported value range
Not reported
2,168 shares
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Sabat Carolyn Chao
Director
Exercise
Calculated transaction value
$0
2,168 shares @ $0
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Sabat Carolyn Chao
Director
Exercise
Reported value range
Not reported
2,168 shares
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Northcutt R Bruce
Director
Exercise
Calculated transaction value
$0
2,168 shares @ $0
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Northcutt R Bruce
Director
Exercise
Reported value range
Not reported
2,168 shares
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Mccollum Mark A
Director
Exercise
Calculated transaction value
$0
2,168 shares @ $0
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Mccollum Mark A
Director
Exercise
Reported value range
Not reported
2,168 shares
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Lubel Kimberly S
Director
Exercise
Calculated transaction value
$0
2,168 shares @ $0
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Lubel Kimberly S
Director
Exercise
Reported value range
Not reported
2,168 shares
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Graff Michael J
Director
Exercise
Reported value range
Not reported
2,168 shares
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Graff Michael J
Director
Exercise
Calculated transaction value
$0
2,168 shares @ $0
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Cregg Roger A
Director
Exercise
Reported value range
Not reported
2,168 shares
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Cregg Roger A
Director
Exercise
Calculated transaction value
$0
2,168 shares @ $0
Traded
Aug 8, 2026
Filed
Aug 10, 2026
Chao David Tsung-hung
Director
Exercise
Reported value range
Not reported
2,168 shares
Traded
Aug 8, 2026
Filed
Aug 10, 2026