KLA Investor Day Presentation Deck

Contract Services Adoption Rate Continues Increasing % of service revenue 100% 0% CY01 Semi PC Revenue ■KLA Contract CY11 ■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 KLAH Investor Day 95

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