X0306 4 2017-05-04 0000040888 AEROJET ROCKETDYNE HOLDINGS, INC. AJRD 0001186913 CORCORAN THOMAS A 222 N. SEPULVEDA BLVD., SUITE 500 EL SEGUNDO CA 90245 1 Common Stock 2017-05-04 4 A 0 4085 22.03 A 9355 D Common Stock 92053 I Thomas A. Corcoran TTEE U/A DTD 07/16/2001 Grant to Reporting Person of restricted stock under the Amended and Restated 2009 Equity and Performance Incentive Plan. Such shares of restricted stock will vest in 50% increments on November 4, 2017 and May 4, 2018. /s/ Rebecca A. Bauer, attorney-in-fact 2017-05-08