Exhibit 99.1 Agilent Reports Fourth-Quarter Fiscal Year 2025 Financial Results Delivers solid results in Q4, initiates FY26 guidance Fourth-quarter fiscal year 2025 Full fiscal year 2025 Fiscal year 2026 and first-quarter outlook SANTA CLARA, California, Nov. 24, 2025 — Agilent Technologies, Inc. (NYSE: A) today reported revenue of $1.86 billion for the fourth quarter ended October 31, 2025, exceeding revenue • Revenue of$1.86 billion for the fourth quarter ended October 31, 2025, exceeding revenue guidanc ...