Chao Albert 4

What Happened

• Albert Chao, Executive Chairman and Director of Westlake Corp (WLK), had 16,555 restricted stock units (RSUs) convert into common shares on Feb 17, 2026 (coded as an exercise/conversion of a derivative). The RSUs converted at $0.00 (one-for-one conversion).
• To satisfy tax obligations, 5,089 of those shares were withheld/disposed at $98.95 per share for a total tax withholding of $503,557. After withholding, Chao retained 11,466 shares from the vesting (approximately $1,134,561 at $98.95).

Key Details

• Transaction dates: RSU conversion/vesting on 2026-02-17; tax withholding/disposition recorded 2026-02-18; Form 4 filed 2026-02-19 (appears timely).
• Prices/values: Conversion priced at $0.00 (RSU conversion); withholding sale price used $98.95, withholding value $503,557. Net retained shares value ≈ $1,134,561 (11,466 × $98.95).
• Shares owned after transaction: Not stated in the provided filing excerpt.
• Footnotes: F1 — RSUs convert one-for-one into common stock. F2 — These 16,555 RSUs were granted 2023-02-17 and vested on the 3rd anniversary. F3 — Shares were withheld to satisfy tax obligations from the vesting.
• Transaction codes: M = exercise/conversion of derivative (RSU conversion); F = shares withheld/paid to cover tax liability.

Context

• This was a vesting/conversion event (RSUs becoming common stock) with routine tax withholding — not an open-market purchase or voluntary sale that would more strongly signal insider sentiment.
• The filing shows conversion of RSUs and withholding to cover taxes (a common cashless result). No 10b5-1 plan, gifts, or other special sale framework was indicated in the provided notes.