Ederington L. Benjamin 4

What Happened

• Ederington L. Benjamin, EVP, Legal & External Affairs at Westlake Corp (WLK), had 3,809 restricted stock units (RSUs) convert into common shares when they vested on February 17, 2026. The RSUs converted one-for-one into shares (exercise/conversion code M) at an effective exercise price of $0.00.
• To cover tax obligations arising from the vesting, 978 of those shares were withheld (disposition code F) at a per-share value of $98.95, totaling $96,773. After withholding, Benjamin received a net 2,831 shares from the vesting.

Key Details

• Transaction dates: RSU vest/conversion on 2026-02-17; tax-withholding share disposition on 2026-02-18. Form filed 2026-02-19.
• Prices and values: conversion/exercise price $0.00 (RSU conversion); withholding price $98.95 per share; 978 shares withheld = $96,773.
• Net shares issued to insider: 3,809 vested → 978 withheld → 2,831 shares delivered to Benjamin.
• Footnotes: F1/F2/F3 note the RSUs convert 1:1, were granted 2/17/2023 with a 3-year vesting, and shares were withheld to satisfy tax obligations.
• Filing timeliness: The Form 4 was filed on 2026-02-19 covering the 2026-02-17 vesting — not indicated as late in the filing.

Context

• This was not an open-market sale; shares were withheld to satisfy tax withholding related to RSU vesting (common, routine). The primary event is an award vesting (conversion of RSUs), not a purchase or intentional sale for liquidity or investment signaling.
• The M codes indicate conversion/exercise of the derivative (RSUs) into common stock; F indicates shares disposed/withheld to cover taxes. No additional market-sale transactions were reported.