Exhibit 99.1 FOR IMMEDIATE RELEASE Lam Research Corporation Reports Financial Results for the Quarter Ended March 31, 2024 FREMONT, Calif., April 24, 2024 - Lam Research Corporation (the "Company," "Lam," "Lam Research") today announced financial results for the quarter ended March 31, 2024 (the “March 2024 quarter”). Highlights for the March 2024 quarter were as follows: • Revenue of $3.79 billion. • U.S. GAAP gross margin of 47.5%, U.S. GAAP operating income as a percentage of revenue of 27.9%, and U.S. G ...