Mary Beth Wilkinson, Executive Vice President, Chief Legal Officer and Secretary of KLA Corp (NASDAQ: KLAC), filed a Form 4 on August 10, 2026, disclosing two transactions in KLA common stock dated August 7, 2026: a tax-withholding disposition upon RSU vesting and an open-market sale under a Rule 10b5-1 plan.

Key Highlights

  • RSU vesting: 25% of restricted stock units originally granted on August 7, 2025 vested on August 7, 2026, according to the filing.
  • Tax-withholding disposal: 1,208.271 shares were automatically withheld at a price of $193.22 per share to cover required tax withholding at vesting.
  • Open-market sale: 21,831 shares were sold at $197.57 per share pursuant to a Rule 10b5-1 trading plan adopted on February 2, 2026.
  • Post-transaction ownership: Wilkinson directly held 38,693.032 shares of KLA common stock following the reported transactions, including 36,957.766 shares issuable upon vesting of RSUs.
  • Closing price used for withholding: The fair market value used to calculate shares withheld was the closing price of KLA common stock as reported on August 6, 2026.

KLA Corp Officer Discloses RSU Vest, Tax Withholding, and Planned Sale

According to the Form 4 filing, Mary Beth Wilkinson, who serves as EVP, CLO and Secretary at KLA Corp, reported two dispositions of KLA common stock on August 7, 2026. The first transaction, coded "F," involved 1,208.271 shares withheld at $193.22 per share. The filing explains that these shares were "automatically withheld at vesting to cover required tax withholding," with the fair market value calculated using the closing price on August 6, 2026.

The second transaction, coded "S," was a sale of 21,831 shares at $197.57 per share. The filing states this sale "was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026." Rule 10b5-1 plans allow corporate insiders to establish pre-scheduled trading arrangements. The filing also indicates the form was filed with a check noting the transactions were made pursuant to a contract, instruction, or written plan satisfying Rule 10b5-1(c).

Following both transactions, Wilkinson's direct beneficial ownership stood at 38,693.032 shares of KLA common stock. The filing notes that this figure includes 36,957.766 shares issuable upon vesting of RSUs. The form was signed by Jeffrey S. Cannon as attorney-in-fact for Mary Beth Wilkinson and filed on August 10, 2026.

What Was Disclosed

The filing reported an RSU vesting event for KLA Corp's EVP and CLO on August 7, 2026, resulting in a tax-withholding share disposal of 1,208.271 shares at $193.22 and a pre-planned sale of 21,831 shares at $197.57, leaving direct ownership of 38,693.032 shares.