KLA Investor Day

Contract Services Adoption Rate Continues Increasing % of service revenue 100% 0% CY01 Semi PC Revenue CY11 KLA Contract ■KLA Billable ■Not KLA CY21 Highlights ☐ ☐ Increasing complexity of manufacturing process and KLA equipment ■ Record-level factory utilization ■ Customers geographic footprint expanding ■ Inter-Fab technology transfers ■ Renewed emphasis on reliable supply chains ■ Growing importance of specialized talent Increased complexity, usage and customer urgency drives greater service contract penetration KLA Investor Day 11

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