X0508 4 2023-08-01 0 0000319201 KLA CORP KLAC 0001642452 Khan Ahmad A. ONE TECHNOLOGY DRIVE MILPITAS CA 95035 0 1 0 0 President, Semi Proc. Control 0 Common Stock 2023-06-30 5 J 0 E 66.392 320.068 A 55063.392 D Common Stock 2023-08-01 4 F 0 5580 514.28 D 49483.392 D Common Stock 2023-08-01 4 F 0 1860 514.28 D 47623.392 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 46,227 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 34,973 shares issuable upon vesting of RSUs. On August 1, 2019, the Reporting Person was granted RSUs for 15,007 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 31,222 shares issuable upon vesting of RSUs. /s/ Jeffrey S. Cannon, as attorney-in-fact for Ahmad A. Khan 2023-08-03