#1+ + + KLA's Progress on Environmental Goals and + Approach to Assessing Scope 3 Emissions + + KLA+ + + + October 2022#2#3KLA believes in a responsible, impactful approach to ESG Our Values Perseverance Indispensable for Customers Our Differentiators Collaboration KLA+ Honest, Forthright, Consistent Execution 3 KLA Confidential | Need-to-Know Only Innovation 000 APPP Drive to Be Better formance Team KLA is motivated by the continuous drive to be better, and we are working diligently to understand and address climate issues AYS proposal would result in a less robust foundation for decision- making and less accurate results ▪ We are opposed to irresponsibly announcing a goal on Scope 3 before we have analyzed the implications of such a goal and what it means for our business in real terms We want our goal to reflect what we believe is genuinely feasible Academics, regulators, journalists, and other parties have criticized the rush of net zero pledges as empty and potentially counterproductive KLAH#4#5KLA urges a vote against proposal #4 the AYS shareholder proposal The AYS proposal's request is not simple or benign. Any emissions reduction plan, including "net zero" requires a sophisticated, cross-department effort. KLA is already executing on a thoughtful plan that will produce an update in 2023. AYS's demand for a report is unnecessary and duplicative. 5 KLA Confidential | Need-to-Know Only KLA actions are well underway: • Filling in gaps on product efficiency modeling Reviewing and validating modeling assumptions Future efficiency models Moore's Law assumptions (transistor density) Flat panel display assumptions (display size) Performing tie-out of modeling and related assumptions to validate accuracy Developing and aligning Scope 3 target recommendation Providing an update of our Scope 3 strategy in 2023 KLAH#6+ + Thank You for your Consideration and Support 4 + + + + + + + KLA+ + + + +