0000771497 2025-06-11 2025-06-11 true 0000771497 8-K/A 2025-06-11 ABM INDUSTRIES INCORPORATED DE 1-8929 94-1369354 One Liberty Plaza 7th Floor New York NY 10006 (212) 297-0200 false false false false Common Stock, $0.01 par value ABM NYSE false