X0206 3 2022-09-08 0 0000040888 AEROJET ROCKETDYNE HOLDINGS, INC. AJRD 0001946022 Chontos Joseph E. 222 N. PACIFIC COAST HIGHWAY, SUITE 500 EL SEGUNDO CA 90245 0 1 0 0 See Remarks Common Stock 2362 D Restricted Stock Units Common Stock 107 D Restricted Stock Units Common Stock 216 D Restricted Stock Units Common Stock 363 D Restricted Stock Units Common Stock 4000 D Restricted Stock Units Common Stock 4657 D Stock Appreciation Right 32.25 2022-02-28 2026-02-28 Common Stock 1225 D Stock Appreciation Right 22.94 2021-04-30 2025-04-30 Common Stock 3333 D The restricted stock units ("RSUs") vest in three equal annual installments beginning on March 2, 2021. Each RSU represents a contingent right to receive one share of Aerojet Rocketdyne Holdings, Inc. common stock. The RSUs vest in three equal annual installments beginning on March 1, 2022. The RSUs vest in three equal annual installments beginning on February 28, 2023. The RSUs vest in two equal annual installments beginning on April 21, 2023. The RSUs vest in three equal annual installments beginning on September 3, 2023. Exhibit 24 - Power of Attorney Vice President, General Counsel and Corporate Secretary /s/ Rebecca A. Bauer, attorney-in-fact 2022-09-16