X0306 4 2022-01-07 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 2022-01-07 4 A 0 3716.0000 0.0000 A 21545.0000 D Common Stock 2022-01-08 4 F 0 470.0000 43.2800 D 21075.0000 D Common Stock 2022-01-09 4 A 0 4015.0000 0.0000 A 25090.0000 D Common Stock 2022-01-09 4 F 0 296.0000 43.2800 D 24794.0000 D Common Stock 2022-01-09 4 F 0 1211.0000 43.2800 D 23583.0000 D Common Stock 2022-01-10 4 F 0 356.0000 43.2800 D 23227.0000 D 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. Represents common stock withheld by the Issuer to cover tax withholding obligations arising from the vesting of a previous grant of restricted stock units. Issuance of shares of common stock pursuant to the satisfaction of performance criteria of performance shares previously granted on 1/9/2019. Represents common stock withheld by the Issuer to cover tax withholding obligations arising from the vesting of TSR-modified performance shares. By: David R. Goldman, by power of attorney 2022-01-11