X0306 4 2022-08-01 0 0000319201 KLA CORP KLAC 0001196898 WALLACE RICHARD P ONE TECHNOLOGY DRIVE MILPITAS CA 95035 0 1 0 0 President and CEO Common Stock 2022-06-30 5 J 0 E 57 271.218 A 231206 D Common Stock 2022-08-01 4 F 0 3189 385.64 D 228017 D Common Stock 9182 I By Trust Purchased under the registrant's employee stock purchase plan. Represents 85% of the closing price of the registrant's stock on the employee stock purchase plan on June 30, 2022. The number of shares of KLA common stock includes 154,061 shares issuable upon vesting of RSUs. Pursuant to the terms of the grant of restricted stock units ("RSUs") on August 1, 2019, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 1, 2022. The number of shares of KLA common stock includes 147,630 shares issuable upon vesting of RSUs. Shares held under the Wallace Living Trust u/a/d 03/27/01, as amended, a trust of which the Reporting Person is a trustee and beneficiary. /s/ Jeffrey Cannon, attorney-in-fact for Richard P. Wallace 2022-08-03