X0306 4 2023-03-02 0 0000040888 AEROJET ROCKETDYNE HOLDINGS, INC. AJRD 0001635474 Drake Eileen P. 222 N. PACIFIC COAST HIGHWAY, SUITE 500 EL SEGUNDO CA 90245 1 1 0 0 CEO and President Common Stock 2023-03-02 4 A 0 2911 A 70910 D Common Stock 2023-03-03 4 F 0 1644 56.24 D 69266 D Common Stock 297897 I EPD 2018 Trust Dated August 7, 2018 On March 2, 2020, the Reporting Person was granted 95,444 restricted stock units ("RSUs"), vesting upon the achievement of certain performance targets. On December 15, 2022, vesting of the Reporting Person's RSUs that would have vested on March 2, 2023 was accelerated at 145% of the performance target, as approved by the Organization & Compensation Committee of the Issuer's Board of Directors (the "Committee"). On February 27, 2023, the Committee certified achievement at 151.1% of the performance target and approved the vesting of additional RSUs. Each RSU represents a contingent right to receive one share of Aerojet Rocketdyne Holdings, Inc. common stock. /s/ David A. Fox, attorney-in-fact 2023-03-06