X0508 4 2023-08-01 0 0000319201 KLA CORP KLAC 0001430600 Kirloskar Virendra A ONE TECHNOLOGY DRIVE MILPITAS CA 95035 0 1 0 0 SVP & Chief Accounting Officer 0 Common Stock 2023-06-30 5 J 0 E 66.392 320.068 A 5357.392 D Common Stock 2023-08-01 4 F 0 746 514.28 D 4611.392 D Common Stock 2023-08-01 4 F 0 319 514.28 D 4292.392 D 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 January 3, 2023. The number of shares of KLA common stock includes 4,994 shares issuable upon vesting of restricted stock units ("RSUs"). The Reporting Person vested the remaining 50% of the performance-based RSUs, upon his completion of four years of service (August 1, 2023) following the award on August 1, 2019. The Compensation Committee of KLA's Board of Directors determined the level at which the underlying performance goals were attained (August 4, 2022). 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, 2023. The number of shares of KLA common stock includes 3,065 shares issuable upon vesting of RSUs. On August 1, 2019, the Reporting Person was granted RSUs for 2,573 shares of KLA common stock. On August 1, 2023, the remaining 25% of the RSUs vested. 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 1, 2023. The number of shares of KLA common stock includes 2,422 shares issuable upon vesting of RSUs. /s/ Jeffrey S. Cannon, as attorney-in-fact for Virendra A. Kirloskar 2023-08-03