Exhibit 99.1 FOR IMMEDIATE RELEASE Investor Relations: Media Relations: Kevin Kessel, CFA Mike Dulin Vice President, Investor Relations Corporate & KLA Services Communications (408) 875-6627 michael.dulin@kla.com kevin.kessel@kla.com KLA Corporation Reports Fiscal 2025 First Quarter Results • Total revenues were $2.84 billion, above the midpoint of the guidance range of $2.75 billion +/- $150 million; • GAAP diluted EPS was $7.01 and non-GAAP diluted EPS was $7.33, both of which were near the upper end of t ...