X0306 4 2022-08-04 0 0000319201 KLA CORP KLAC 0001802832 Donzella Oreste ONE TECHNOLOGY DRIVE MILPITAS CA 95035 0 1 0 0 Executive Vice President Common Stock 2022-08-04 4 A 0 2545 0.00 A 34496 D Common Stock 2022-08-04 4 A 0 8040 0.00 A 42536 D Common Stock 2022-08-04 4 F 0 2117 397.40 D 40419 D On August 4, 2022, the Reporting Person received a grant of restricted stock units ("RSUs"). The RSUs vest 25% annually from the date of grant. The number of shares of KLA common stock includes 22,931 shares issuable upon vesting of RSUs. On August 1, 2019, in addition to the RSUs granted on that date that were subject only to service-vesting requirements (which RSUs were previously reported on a Form 4), the Reporting Person was also granted RSUs covering up to a maximum of 8,040 shares (based on 150% of the target shares of 5,360) of KLA common stock, subject to both performance-vesting and service-vesting requirements. On August 4, 2022, the Compensation and Talent Committee of KLA's Board of Directors determined the level at which the corporate performance goals were attained and, based on the assessment, determined that the number of shares subject to the RSUs is 8,040. The number of shares of KLA common stock includes 26,951 shares issuable upon vesting of RSUs. Pursuant to the terms of the grant, 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 4, 2022. /s/ Jeffrey Cannon, attorney-in-fact for Oreste Donzella 2022-08-08