X0306 4 2023-02-28 0 0000040888 AEROJET ROCKETDYNE HOLDINGS, INC. AJRD 0001584846 SCHUMACHER JOHN D. 222 N. PACIFIC COAST HIGHWAY, SUITE 500 EL SEGUNDO CA 90245 0 1 0 0 SVP, Washington Operations Common Stock 2023-02-28 4 M 0 953 A 87343 D Common Stock 2023-02-28 4 F 0 519 56.34 D 86824 D Common Stock 2516 I By Plan Trust Restricted Stock Units 2023-02-28 4 M 0 953 0.00 D Common Stock 953 1906 D Each restricted stock unit ("RSU") 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 27, 2023 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 RSUs vest in three equal annual installments beginning on February 28, 2023. /s/ David A. Fox, Attorney-in-Fact 2023-03-02