0000771497 2024-03-27 2024-03-27 0000771497 --10-31 false 8-K 2024-03-27 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