X0306 4 2020-05-15 0000040888 AEROJET ROCKETDYNE HOLDINGS, INC. AJRD 0001186913 CORCORAN THOMAS A 222 N. PACIFIC COAST HIGHWAY, SUITE 500 EL SEGUNDO CA 90245 1 Common Stock 2020-05-15 4 A 0 1099 38.64 A 3597 D Common Stock 2020-05-15 4 A 0 549 38.64 A 4146 D Common Stock 2020-05-15 4 A 0 2587 38.64 A 6733 D Common Stock 103983 I Thomas A. Corcoran TTEE U/A DTD 07/16/2001 Effective March 24, 2010, the Board of Directors approved a Director Compensation Program which allows Directors to receive Aerojet Rocketdyne Holdings, Inc. common stock in lieu of their cash compensation. The number of shares of common stock shown reflects the common stock received by this Reporting Person in lieu of his annual cash retainer fee paid quarterly. Pursuant to the Director Compensation Program, if a Director elects to receive common stock in lieu of at least 50% of his cash compensation, the Company will grant restricted shares equal in value to 50% of the amount of cash compensation he elects to receive in common stock. Such restricted shares will vest on the earlier of (i) the date of the Director's retirement from the Board, and (ii) one year after the grant date. The number of shares of common stock shown reflects the grant of restricted shares. Grant to Reporting Person of restricted stock under the Aerojet Rocketdyne Holdings, Inc. 2019 Equity and Performance Incentive Plan. Such shares of restricted stock will vest in 50% increments on November 15, 2020 and May 15, 2021. 543 shares that were previously reported as directly owned on the Reporting Person's Form 4 filed February 20, 2020 have been transferred to the Thomas A. Corcoran TTEE U/A DTD 07/16/2001 Trust since that filing and are now being reported as indirectly owned. /s/ Rebecca A. Bauer, attorney-in-fact 2020-05-18