Form 4 for WLK WESTLAKE CORP
Accepted 2026-02-19 00:00:00 ET · period of report 2026-02-17 · accession 0001193125-26-059207 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-02-19 | 2026-02-18 | WLK | Bender Mark Steven | EVP, CFO | F - Tax | $98.95 | -1,209 | 60.5K | -2% | -$119.6K |
| D | 2026-02-19 | 2026-02-17 | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | $0.00 | +4,751 | 61.7K | +8% | $0 |
| D | 2026-02-19 | 2026-02-17 | WLK | Bender Mark Steven | EVP, CFO | M - OptEx | $0.00 | -4,751 | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-02-18 | F | D | 1,209 | $98.95 | 60,510 | D | — | — | (F3) Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs. |
| 2 | Common | Common Stock | 2026-02-17 | M | A | 4,751 | $0.00 | 61,719 | D | — | — | (F1) Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. |
| 3 | Derivative | Restricted Stock Units | 2026-02-17 | M | D | 4,751 | $0.00 | 0 | D | — · — to — | 4,751 Common Stock | (F1) Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis. (F2) On February 17, 2023, the reporting person was granted 4,751 RSUs vesting on the third anniversay of the grant date. |