X0306 4 2021-05-03 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 2021-05-03 4 A 0 50.0000 0.0000 A 19177.0000 D Dividend equivalent rights (DERs) accrued on the restricted stock units granted under the 2006 Equity Incentive Plan. DERs vest in the same manner as the restricted stock units to which they relate. Each DER is the economic equivalent of one share of ABM common stock. Includes 14,381 unvested RSUs and Dividend Equivalent Rights relating to the unvested RSUs, adjusted to reflect the cumulative effect of fractional shares. By: David R. Goldman, by power of attorney 2021-05-05