Bender Mark Steven 4

What Happened
Mark Steven Bender, EVP & CFO of Westlake Corp (WLK), had 4,751 restricted stock units (RSUs) convert into common stock on Feb 17, 2026 (recorded as an exercise/conversion). The RSUs vest one-for-one into shares at no exercise price. To satisfy tax withholding obligations, 1,209 of those shares were withheld/disposed on Feb 18, 2026 at $98.95 per share for proceeds of $119,631. Net shares received by Bender were 3,542 (4,751 vested − 1,209 withheld). The total market value of the 4,751 vested shares at $98.95 was about $470,111.

Key Details

• Transaction dates: Feb 17, 2026 (RSU conversion); Feb 18, 2026 (shares withheld for taxes). Filing date: Feb 19, 2026 (timely).
• Prices and amounts: 4,751 RSUs converted (reported $0 exercise price); 1,209 shares withheld/disposed at $98.95 each = $119,631.
• Net shares delivered to insider: 3,542 shares retained after withholding.
• Footnotes: F1—RSUs convert one-for-one to common stock; F2—these RSUs were granted Feb 17, 2023 and vested on the third anniversary; F3—shares otherwise issuable were withheld to satisfy tax obligations.
• Transaction codes: M = exercise/conversion of derivative (RSU vesting); F = shares withheld for taxes.
• Shares owned after transaction: not specified in the excerpt of the filing.

Context
This was a routine vesting of previously granted RSUs, not an open-market purchase or discretionary sale. The withholding of shares to cover taxes (a common cashless settlement method) should be viewed as administrative rather than a market-timing sale. The Form 4 was filed promptly following the transactions.