Westlake (WLK) Director Catherine T. Chao Receives 2,168 Shares (RSU Vest)

What Happened

• Catherine T. Chao, a director of Westlake Corp (WLK), had 2,168 restricted stock units (RSUs) convert into 2,168 shares of Westlake common stock on August 8, 2026. The Form 4 reports an exercise/conversion (transaction code M) for 2,168 shares acquired and a corresponding disposition of 2,168 shares at $0.00. No cash was reported as exchanged — the conversion reflects vesting of RSUs and an internal transfer of the resulting shares to a trust for her benefit.

Key Details

• Transaction date: 2026-08-08; Form 4 filed: 2026-08-10 (timely filing).
• Reported amounts: 2,168 shares converted/acquired; 2,168 shares disposed at $0.00.
• Price/value: $0 cash consideration reported on the disposition (typical for RSU conversions/transfers).
• Post-transaction holdings: the 2,168 shares are held in a trust for the reporting person (per footnote); total beneficial holdings after the transaction are not specified in the excerpt.
• Relevant footnotes:
  • F1: RSUs convert one-for-one into common stock.
  • F2: Shares are held in a trust for the reporting person, who is sole trustee.
  • F3: These RSUs were granted on Aug 8, 2025 and vested on the first anniversary (Aug 8, 2026).
• Filing timeliness: filed two days after the transaction date (appears timely under Form 4 rules).

Context

• This was an RSU vesting/conversion and subsequent transfer to a personal trust, not an open-market sale or purchase. Transaction code M denotes exercise/conversion of a derivative security (here, RSUs). Such conversions are routine compensation events for insiders and do not by themselves indicate a buy or sell sentiment in the market.