Westlake (WLK) Exec Chairman Albert Chao Exercises Options, Sells Shares

What Happened

• Albert Chao, Executive Chairman and Director of Westlake Corp (WLK), exercised 38,873 stock options on Aug 11, 2026 at an exercise price of $61.87, costing $2,404,878, and then sold the same total of 38,873 shares in open-market transactions for combined proceeds of approximately $3,120,774. The sales were executed in two blocks: 7,489 shares at $79.70 and 31,384 shares at $80.42. The filing also reports a derivative disposition entry related to the exercised options.

Key Details

• Transaction date: Aug 11, 2026.
• Option exercise: 38,873 shares @ $61.87 = $2,404,878 (code M — exercise/conversion of derivative).
• Open-market sales:
  • 7,489 shares @ $79.70 = $596,873 (S).
  • 31,384 shares @ $80.42 = $2,523,901 (S).
  • Total sales proceeds ≈ $3,120,774.
• Footnotes:
  • F1/F2 note the sales were executed in multiple transactions at prices ranging $79.02–$80.01 and $80.10–$80.86; the reporting person can provide the exact breakdown on request.
  • F3 indicates the related stock options originally vested in three installments on Feb 17, 2018, 2019 and 2020.
• Shares owned after transaction: Not disclosed in the provided excerpt.
• Filing timeliness: No late filing indicator provided in the excerpt.

Context

• This is an exercise of vested options followed by same-day open-market sales (a pattern commonly described as a cashless exercise). The filing shows the exercise and the subsequent sales on the same date; no additional context (like a 10b5-1 plan or tax withholding) was disclosed in the provided information.