X0306 4 2023-01-09 0000771497 ABM INDUSTRIES INC /DE/ ABM 0001831911 MAHONEY SEAN MICHAEL ONE LIBERTY PLAZA 7TH FL NEW YORK NY 10006 1 EVP, President-Sales & Mktng Common Stock 2023-01-09 4 A 0 4378.0000 0.0000 A 26472.0000 D Common Stock 2023-01-09 4 F 0 1358.0000 45.5400 D 24294.0000 D Common Stock 2023-01-10 4 A 0 3856.0000 0.0000 A 28150.0000 D Represents shares of Issuer common stock issued upon the vesting of performance shares previously granted on January 9, 2020, which vested on January 9, 2023, based on the Issuer's satisfaction of performance criteria over a 3-year period. Restricted stock units (RSUs) granted under the 2021 Equity and Incentive Compensation Plan, representing a contingent right to receive shares of common stock. Units vest in three equal annual installments beginning a year from the grant date, and will settle in shares of common stock. Dividend equivalent rights (DERs) will accrue. By: David R. Goldman, by power of attorney 2023-01-11