X0306 4 2018-02-27 0000040888 AEROJET ROCKETDYNE HOLDINGS, INC. AJRD 0001645964 Tucker Mark A 222 N. SEPULVEDA BLVD., SUITE 500 EL SEGUNDO CA 90245 1 Chief Operating Officer Common Stock 2018-02-27 4 D 0 8283 27.25 D 139393 D Common Stock 2018-02-27 4 F 0 5143 27.25 D 134250 D Common Stock 2018-02-27 4 A 0 39008 0 A 173258 D Common Stock 2018-02-27 4 A 0 2110 0 A 175368 D Common Stock 2018-02-27 4 A 0 9239 0 A 184607 D Stock Appreciation Right 27.25 2018-02-27 4 A 0 20086 0 A 2021-02-27 2025-02-27 Common Stock 20086 20086 D Performance-based restricted stock forfeited due to failure to achieve maximum performance targets for FY2017. Grant to Reporting Person of restricted stock under the Amended and Restated 2009 Equity and Performance Incentive Plan. Restricted stock will vest based on meeting certain performance targets for FY2020. 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 1/3 increments on February 27, 2019, February 27, 2020 and February 27, 2021. Grant to Reporting Person of restricted stock under the Amended and Restated 2009 Equity and Performance Incentive Plan. Such restricted stock will vest as follows: 1/3 to vest upon the attainment of a share price of $34 no later than December 31, 2020, an additional 1/3 to vest upon the attainment of a share price of $38 no later than December 31, 2021, and an additional 1/3 to vest upon the attainment of a share price of $42 no later than December 31, 2022, with the share price in all cases being determined on the basis of the 20-day volume weighted average price of the Company's common stock. /s/ Rebecca A. Bauer, attorney-in-fact 2018-03-01