Stocktoria
WESTLAKE CORP WLK
NYSE · XNYS · stock · Industrial Organic Chemicals · website · IPO 2004-08-11
WESTLAKE CORP insider transactions (Form 4)
| Insider | Role | Date | Action | Shares | Price |
|---|---|---|---|---|---|
| Bender Mark Steven | EVP & CFO | 2026-05-13 | Tax withheld | 5,284 | $97.34 |
| Bender Mark Steven | EVP & CFO | 2026-05-12 | Option exercise | 13,164 | — |
| Buesinger Robert F. | EVP, PEM Segment Head | 2026-03-27 | Sell | 4,000 | $115.25 |
| Bender Mark Steven | EVP & CFO | 2026-03-27 | Sell | 16,413 | $112.53 |
| Bender Mark Steven | EVP & CFO | 2026-02-27 | Sell | 421 | $101.52 |
| Bender Mark Steven | EVP & CFO | 2026-02-27 | Disposition | 12,693 | $98.20 |
| Bender Mark Steven | EVP & CFO | 2026-02-27 | Option exercise | 6,199 | $65.81 |
| Bender Mark Steven | EVP & CFO | 2026-02-27 | Option exercise | 6,494 | $86.54 |
Source: SEC EDGAR filings · CIK 0001262823 · as of 2025-12-31. Facts from filings plus Stocktoria's own computed scores — not investment advice.