WESTLAKE CORP (WLK) Stock Ownership and Short Interest
USA - NYSE:WLK - US9604131022 - Common Stock
68.81 USD
+0.52 (+0.76%)
70.07 USD
+1.26 (+1.83%)
| Shares Outstanding | 128.25M |
| Float | 33.11M |
| Float Short Interest Percentage | 15.53% |
| Owners (insider) | 1.26% |
| Owners (institutional) | 31.21% |
| Owners (insider) change | 0.03% |
| Owners (institutional) change | -1.05% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| 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 |
| Feb 21, 2025 | Bender Mark Steven | Option Excercise | 3530 | 110.54 | $ 390,206.20 |
| Feb 21, 2025 | Holy Jeffrey Adam | Option Excercise | 341 | 110.54 | $ 37,694.14 |
| Feb 21, 2025 | Ederington L. Benjamin | Option Excercise | 2924 | 110.54 | $ 323,218.96 |
| Feb 21, 2025 | Janssens Thomas J. | Option Excercise | 606 | 110.54 | $ 66,987.24 |
| Feb 21, 2025 | Chao James | Option Excercise | 6554 | 110.54 | $ 724,479.16 |
| Feb 21, 2025 | Chao Albert | Option Excercise | 13390 | 110.54 | $ 1,480,130.60 |
| Feb 21, 2025 | Buesinger Robert F. | Option Excercise | 2738 | 110.54 | $ 302,658.52 |
| Feb 20, 2025 | Holy Jeffrey Adam | Grant | 1306 | 0.00 | $ 0.00 |
| Feb 20, 2025 | Ederington L. Benjamin | Grant | 7305 | 0.00 | $ 0.00 |
| Feb 20, 2025 | Janssens Thomas J. | Grant | 2444 | 0.00 | $ 0.00 |
| Feb 20, 2025 | Chao James | Grant | 16375 | 0.00 | $ 0.00 |
| Feb 20, 2025 | Chao Albert | Grant | 33456 | 0.00 | $ 0.00 |
| Feb 20, 2025 | Buesinger Robert F. | Grant | 6839 | 0.00 | $ 0.00 |
| Feb 20, 2025 | Bender Mark Steven | Grant | 8819 | 0.00 | $ 0.00 |
| Feb 20, 2025 | Chao John Tsung-chen | Grant | 955 | 0.00 | $ 0.00 |
| Feb 19, 2025 | Holy Jeffrey Adam | Option Excercise | 219 | 111.51 | $ 24,421.44 |
| Feb 19, 2025 | Chao James | Option Excercise | 2287 | 111.51 | $ 255,031.22 |
| Feb 19, 2025 | Chao Albert | Option Excercise | 6069 | 111.51 | $ 676,766.97 |
| Feb 19, 2025 | Ederington L. Benjamin | Option Excercise | 5268 | 111.51 | $ 587,452.08 |
| Feb 19, 2025 | Buesinger Robert F. | Option Excercise | 4015 | 111.51 | $ 447,725.10 |
| Feb 19, 2025 | Bender Mark Steven | Option Excercise | 4446 | 111.51 | $ 495,772.76 |
| Feb 19, 2025 | Janssens Thomas J. | Option Excercise | 336 | 111.50 | $ 37,465.54 |
| Feb 18, 2025 | Janssens Thomas J. | Option Excercise | 790 | 115.29 | $ 91,079.10 |
| Feb 18, 2025 | Ederington L. Benjamin | Option Excercise | 1895 | 115.29 | $ 218,474.55 |
| Feb 18, 2025 | Holy Jeffrey Adam | Option Excercise | 702 | 0.00 | $ 0.00 |
| Feb 18, 2025 | Chao James | Option Excercise | 8796 | 0.00 | $ 0.00 |
| Feb 18, 2025 | Chao Albert | Option Excercise | 17972 | 0.00 | $ 0.00 |
| Feb 18, 2025 | Chao John Tsung-chen | Option Excercise | 513 | 0.00 | $ 0.00 |
| Feb 18, 2025 | Ederington L. Benjamin | Option Excercise | 13174 | 0.00 | $ 0.00 |
| Feb 18, 2025 | Buesinger Robert F. | Option Excercise | 12923 | 0.00 | $ 0.00 |
| Feb 18, 2025 | Bender Mark Steven | Option Excercise | 13987 | 0.00 | $ 0.00 |
| Feb 18, 2025 | Janssens Thomas J. | Option Excercise | 1313 | 0.00 | $ 0.00 |
| Feb 14, 2025 | Janssens Thomas J. | Option Excercise | 3039 | 0.00 | $ 0.00 |
| Feb 14, 2025 | Ederington L. Benjamin | Option Excercise | 7597 | 0.00 | $ 0.00 |
| Nov 29, 2024 | Chao David Tsung-Hung | Open Market Sale | 1750 | 129.08 | $ 225,888.25 |
| Nov 22, 2024 | Chao David Tsung-Hung | Open Market Sale | 1750 | 130.00 | $ 227,500.00 |