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Westlake Corp Executive Chairman Albert Chao reported an option exercise and related stock sales. He exercised employee stock options for 38,873 shares of common stock at an exercise price of $61.865 per share, then sold 7,489 shares at $79.70 and 31,384 shares at $80.42 per share in open-market transactions on August 11, 2026. The sold shares were executed at weighted average prices within disclosed price ranges.
Westlake Corp director Jeffrey Wayne Sheets reported the vesting and conversion of 2,168 Restricted Stock Units into an equal number of shares of common stock on August 8, 2026. The RSUs, granted on August 8, 2025 and vesting on the first anniversary of the grant date, converted on a one-for-one basis into common shares. Following the transaction, Sheets directly owned 14,927 shares of Westlake common stock.
Westlake Corp director Carolyn Chao Sabat exercised previously granted 2,168 Restricted Stock Units, converting them into 2,168 shares of common stock on a one-for-one basis. The award was originally granted on August 8, 2025 and vested on its first anniversary. Following this conversion, she directly holds 5,748 shares of Westlake common stock.
Westlake Corp director R. Bruce Northcutt reported an option-style event involving restricted stock units. On August 8, 2026, 2,168 restricted stock units were exercised and converted on a one-for-one basis into 2,168 shares of common stock. Following the conversion, Northcutt directly holds 23,351 shares of Westlake common stock. The units had been granted on August 8, 2025 and vested on the first anniversary of the grant date.
Westlake Corp director Mark A. McCollum reported the vesting and conversion of 2,168 restricted stock units into an equal number of shares of common stock on August 8, 2026. The restricted stock units converted to common stock on a one-for-one basis and were originally granted on August 8, 2025, vesting on the first anniversary of the grant date. Following this transaction, McCollum directly holds 11,824 shares of Westlake common stock.
Westlake Corp director Kimberly S. Lubel reported the exercise and conversion of 2,168 restricted stock units into 2,168 shares of common stock on August 8, 2026. Following this transaction, Lubel directly holds 13,821 shares of common stock. The restricted stock units convert into common stock on a one-for-one basis and were originally granted on August 8, 2025, with vesting on the first anniversary of the grant date.
Westlake Corp director Michael J. Graff reported an automatic conversion of 2,168 restricted stock units into common stock on August 8, 2026. The restricted stock units converted into common shares on a one-for-one basis, stemming from a grant made on August 8, 2025 that vested on its first anniversary. Following the conversion, Graff directly held 23,310 shares of Westlake common stock.
Westlake Corp director Roger A. Cregg reported the vesting and exercise of 2,168 restricted stock units into an equal number of shares of common stock on August 8, 2026. Restricted stock units convert into common stock on a one-for-one basis. Following the transaction, Cregg directly holds 3,507 shares of common stock.
WESTLAKE CORP director David Tsung-Hung Chao reported the vesting and conversion of 2,168 restricted stock units into an equal number of common shares on August 8, 2026. Following this exercise, he holds 11,080 common shares directly and 19,423 common shares indirectly through a trust for his benefit, where he serves as sole trustee.