| Date | Name | Title | Action | No Shares | Price Per Share |
|---|---|---|---|---|---|
Insider Transactions For WLK | |||||
| 2026-05-13 | Bender, Mark Steven | EVP & CFO | Sold | 5284 | $97.34 |
| 2026-05-12 | Bender, Mark Steven | EVP & CFO | Purchased | 13164 | $0.00 |
| 2026-05-12 | Bender, Mark Steven | EVP & CFO | Sold | 13164 | $0.00 |
| 2026-04-02 | Powers, Brian John | SVP, PEM Segment Head | Purchased | 1961 | $0.00 |
| 2026-03-27 | Bender, Mark Steven | EVP & CFO | Sold | 16413 | $112.54 |
| 2026-03-27 | Buesinger, Robert F. | EVP, PEM Segment Head | Sold | 4000 | $115.25 |
| 2026-02-27 | Bender, Mark Steven | EVP & CFO | Purchased | 6199 | $65.81 |
| 2026-02-27 | Bender, Mark Steven | EVP & CFO | Sold | 6494 | $0.00 |
| 2026-02-27 | Bender, Mark Steven | EVP & CFO | Sold | 6199 | $0.00 |
| 2026-02-27 | Bender, Mark Steven | EVP & CFO | Sold | 16988 | $100.91 |
| 2026-02-27 | Bender, Mark Steven | EVP & CFO | Sold | 421 | $101.52 |
| 2026-02-27 | Bender, Mark Steven | EVP & CFO | Purchased | 6494 | $86.54 |
| 2026-02-27 | Bender, Mark Steven | EVP & CFO | Sold | 12693 | $98.20 |
| 2026-02-20 | Ederington, L. Benjamin | EVP, Legal & External Affairs | Sold | 357 | $94.10 |
| 2026-02-20 | Ederington, L. Benjamin | EVP, Legal & External Affairs | Purchased | 25656 | $0.00 |
| 2026-02-20 | Ederington, L. Benjamin | EVP, Legal & External Affairs | Purchased | 7002 | $0.00 |
| 2026-02-20 | Buesinger, Robert F. | EVP, PEM Segment Head | Sold | 326 | $94.10 |
| 2026-02-20 | Buesinger, Robert F. | EVP, PEM Segment Head | Purchased | 19351 | $0.00 |
| 2026-02-20 | Buesinger, Robert F. | EVP, PEM Segment Head | Purchased | 5281 | $0.00 |
| 2026-02-20 | Bender, Mark Steven | EVP & CFO | Sold | 445 | $94.10 |