X0306 4 2022-02-28 0000040888 AEROJET ROCKETDYNE HOLDINGS, INC. AJRD 0001584846 SCHUMACHER JOHN D. 222 N. PACIFIC COAST HIGHWAY, SUITE 500 EL SEGUNDO CA 90245 1 SVP, Washington Operations Common Stock 2022-02-28 4 F 0 495 38.75 D 77999 D Common Stock 2022-02-28 4 D 0 1137 0 D 76862 D Common Stock 2022-02-28 4 F 0 5484 38.75 D 71378 D Common Stock 2022-03-01 4 M 0 819 A 72197 D Common Stock 2022-03-01 4 F 0 395 39.52 D 71802 D Common Stock 2022-03-02 4 M 0 809 A 72611 D Common Stock 2022-03-02 4 F 0 391 39.70 D 72220 D Common Stock 2536 I By Plan Trust Restricted Stock Unit 2022-03-01 4 M 0 819 D Common Stock 819 1640 D Restricted Stock Unit 2022-03-02 4 M 0 809 D Common Stock 809 809 D Each restricted stock unit represents a contingent right to receive one share of Aerojet Rocketdyne Holdings, Inc. common stock. Shares held in the Aerojet Rocketdyne Retirement Savings Plan Trust (Plan Trust) as of February 25, 2022 which reflects the value in the participant's account as per the Plan Administrator's records. The number of shares reported is calculated by dividing the dollar value of the participant's account by the closing market price of the stock on the day reported above. This calculation yields only the approximate number of shares in the participant's account because the cash component in the Plan Trust (target 2%) is allocated to each participant's account on a pro rata basis, and the cash component varies based on overall activity of all participants in the Plan Trust. The number shown has been rounded down to the nearest whole number. The restricted stock units vested in three equal annual installments beginning on the first anniversary of the grant. /s/ Rebecca A. Bauer, attorney-in-fact 2022-03-02