Exhibit 99.1 FOR IMMEDIATE RELEASE Investor Relations: Media Relations: Kevin Kessel, CFA Mike Dulin Vice President, Investor Relations Corporate Communications (408) 875-6627 michael.dulin@kla.com kevin.kessel@kla.com KLA Corporation Reports Fiscal 2026 Second Quarter Results MILPITAS, Calif., January 29, 2026 - KLA Corporation (NASDAQ: KLAC) today announced financial and operating results for its second quarter of fiscal year 2026, which ended on December 31, 2025, and reported GAAP net income of $1.15 bi ...