WESTLAKE CORP (WLK) Stock Ownership
NYSE:WLK • US9604131022
100.34 USD
-2.75 (-2.67%)
At close: Feb 26, 2026
100.34 USD
0 (0%)
After Hours: 2/26/2026, 7:03:38 PM
| Shares Outstanding | 128.27M |
| Float | 33.09M |
| Float Short Interest Percentage | 18.43% |
| Owners (insider) | 1.3% |
| Owners (institutional) | 34.07% |
| Owners (insider) change | 2.39% |
| Owners (institutional) change | 7.75% |
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Feb 20, 2026 | Chao James | Option Excercise | 1569 | 94.10 | $ 147,644.47 |
| Feb 20, 2026 | Szwejbka Scott Thomas | Option Excercise | 91 | 94.10 | $ 8,563.10 |
| Feb 20, 2026 | Holy Jeffrey Adam | Option Excercise | 81 | 94.10 | $ 7,622.10 |
| Feb 20, 2026 | Ederington L. Benjamin | Option Excercise | 357 | 94.10 | $ 33,594.41 |
| Feb 20, 2026 | Buesinger Robert F. | Option Excercise | 326 | 94.10 | $ 30,676.93 |
| Feb 20, 2026 | Bender Mark Steven | Option Excercise | 445 | 94.10 | $ 41,874.06 |
| Feb 20, 2026 | Chao John Tsung-chen | Option Excercise | 91 | 94.10 | $ 8,563.10 |
| Feb 20, 2026 | Chao Albert | Option Excercise | 2501 | 94.10 | $ 235,346.60 |
| Feb 19, 2026 | Szwejbka Scott Thomas | Grant | 365 | 0.00 | $ 0.00 |
| Feb 19, 2026 | Holy Jeffrey Adam | Grant | 264 | 0.00 | $ 0.00 |
| Feb 19, 2026 | Ederington L. Benjamin | Grant | 1425 | 0.00 | $ 0.00 |
| Feb 19, 2026 | Buesinger Robert F. | Grant | 1301 | 0.00 | $ 0.00 |
| Feb 19, 2026 | Bender Mark Steven | Grant | 1777 | 0.00 | $ 0.00 |
| Feb 19, 2026 | Chao John Tsung-chen | Grant | 213 | 0.00 | $ 0.00 |
| Feb 19, 2026 | Chao Albert | Grant | 6193 | 0.00 | $ 0.00 |
| Feb 19, 2026 | Chao James | Grant | 3884 | 0.00 | $ 0.00 |
| Feb 18, 2026 | Szwejbka Scott Thomas | Option Excercise | 295 | 98.95 | $ 29,190.25 |
| Feb 18, 2026 | Holy Jeffrey Adam | Option Excercise | 213 | 98.95 | $ 21,076.35 |
| Feb 18, 2026 | Ederington L. Benjamin | Option Excercise | 978 | 98.95 | $ 96,773.10 |
| Feb 18, 2026 | Chao James | Option Excercise | 2664 | 98.95 | $ 263,602.80 |
| Feb 18, 2026 | Chao John Tsung-chen | Option Excercise | 242 | 98.95 | $ 23,945.90 |
| Feb 18, 2026 | Chao Albert | Option Excercise | 5089 | 98.95 | $ 503,556.55 |
| Feb 18, 2026 | Buesinger Robert F. | Option Excercise | 903 | 98.95 | $ 89,351.85 |
| Feb 18, 2026 | Bender Mark Steven | Option Excercise | 1209 | 98.95 | $ 119,630.55 |
| Feb 17, 2026 | Szwejbka Scott Thomas | Option Excercise | 977 | 0.00 | $ 0.00 |
| Feb 17, 2026 | Holy Jeffrey Adam | Option Excercise | 706 | 0.00 | $ 0.00 |
| Feb 17, 2026 | Ederington L. Benjamin | Option Excercise | 3809 | 0.00 | $ 0.00 |
| Feb 17, 2026 | Chao James | Option Excercise | 10382 | 0.00 | $ 0.00 |
| Feb 17, 2026 | Chao John Tsung-chen | Option Excercise | 570 | 0.00 | $ 0.00 |
| Feb 17, 2026 | Chao Albert | Option Excercise | 16555 | 0.00 | $ 0.00 |
| Feb 17, 2026 | Buesinger Robert F. | Option Excercise | 3478 | 0.00 | $ 0.00 |
| Feb 17, 2026 | Bender Mark Steven | Option Excercise | 4751 | 0.00 | $ 0.00 |
| Dec 22, 2025 | Chao Albert | Open Market Sale | 40836 | 73.57 | $ 3,004,373.19 |
| Dec 22, 2025 | Chao Albert | Option Excercise | 81673 | 44.42 | $ 3,627,914.66 |
| Dec 10, 2025 | CREGG ROGER A | Option Excercise | 1339 | $ 0.00 | |
| Oct 2, 2025 | Szwejbka Scott Thomas | Option Excercise | 3842 | 76.70 | $ 294,681.40 |
| Oct 1, 2025 | Szwejbka Scott Thomas | Option Excercise | 10840 | 0.00 | $ 0.00 |
| Aug 28, 2025 | Chao James | Other Disposition | 15140 | 0.00 | $ 0.00 |
| Aug 9, 2025 | Graff Michael J | Option Excercise | 1128 | $ 0.00 | |
| Aug 9, 2025 | NORTHCUTT R BRUCE | Option Excercise | 1128 | $ 0.00 | |
| Aug 9, 2025 | Sabat Carolyn Chao | Option Excercise | 1128 | $ 0.00 | |
| Aug 9, 2025 | Chao Catherine T. | Option Excercise | 1128 | $ 0.00 | |
| Aug 9, 2025 | MCCOLLUM MARK A | Option Excercise | 1128 | $ 0.00 | |
| Aug 9, 2025 | Lubel Kimberly S | Option Excercise | 1128 | $ 0.00 | |
| Aug 9, 2025 | Chao David Tsung-Hung | Option Excercise | 1128 | $ 0.00 | |
| Aug 9, 2025 | Sheets Jeffrey Wayne | Option Excercise | 1128 | $ 0.00 | |
| Mar 5, 2025 | Chao John Tsung-chen | Option Excercise | 235 | 108.62 | $ 25,525.70 |
| Mar 5, 2025 | Chao John Tsung-chen | Option Excercise | 391 | 108.62 | $ 42,470.42 |