Director R. Bruce Northcutt filed a Form 4 with the SEC on August 10, 2026, reporting the vesting of restricted stock units in Westlake Corp common stock on August 8, 2026.

Key Highlights

  • Reporting person: R. Bruce Northcutt, Director of Westlake Corp (NYSE: WLK)
  • Transaction date: August 8, 2026, coded as an "M" (conversion of derivative security)
  • Units converted: 2,168 restricted stock units converted into 2,168 shares of common stock on a one-for-one basis
  • Price of derivative security: $0
  • Beneficial ownership following transaction: 23,351 shares of common stock held directly
  • Original grant date: August 8, 2025, with vesting on the first anniversary of the grant date

Northcutt RSU Vesting Details for Westlake Corp

According to the filing, R. Bruce Northcutt, a director of Westlake Corp, reported the conversion of 2,168 restricted stock units into an equal number of shares of Westlake Corp common stock. The transaction, coded "M" in Table I and Table II of the Form 4, occurred on August 8, 2026. The filing notes that the restricted stock units convert into the issuer's common stock on a one-for-one basis, and the price of the derivative security is listed as $0.

The filing explains that the 2,168 restricted stock units were originally granted on August 8, 2025, and were scheduled to vest on the first anniversary of the grant date. Following the reported transaction, Northcutt directly beneficially owned 23,351 shares of Westlake Corp common stock, as disclosed in Table I of the filing. The derivative security account shows 2,168 restricted stock units remaining as beneficially owned following the transaction, per Table II.

The Form 4 was signed by Mark McCollum by J Feng POA and filed on August 10, 2026. Northcutt's address is listed as 2801 Post Oak Blvd., Ste. 600, Houston, Texas 77056. The filing indicates no amendment to a prior Form 4 was involved.

What Was Disclosed

The filing reports a single transaction by Westlake Corp director R. Bruce Northcutt: the vesting and conversion of 2,168 restricted stock units into common stock on August 8, 2026, resulting in direct beneficial ownership of 23,351 shares.