X0306 4 2018-02-27 0000040888 AEROJET ROCKETDYNE HOLDINGS, INC. AJRD 0001584846 SCHUMACHER JOHN D. 222 N. SEPULVEDA BLVD., SUITE 500 EL SEGUNDO CA 90245 1 VP, Washington Operations Common Stock 2018-02-27 4 D 0 7636 27.25 D 85587 D Common Stock 2018-02-27 4 F 0 4165 27.25 D 81422 D Common Stock 2018-02-27 4 A 0 20526 0 A 101948 D Common Stock 2018-02-27 4 A 0 596 0 A 102544 D Common Stock 2018-02-27 4 A 0 2611 0 A 105155 D Common Stock 2316 I By Plan Trust Stock Appreciation Right 27.25 2018-02-27 4 A 0 10569 0 A 2021-02-27 2025-02-27 Common Stock 10569 10569 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. Shares held in the Aerojet Rocketdyne Retirement Savings Plan Trust (Plan Trust) as of February 23, 2018 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. /s/ Rebecca A. Bauer, attorney-in-fact 2018-03-01