X0306 4 2020-03-04 0000040888 AEROJET ROCKETDYNE HOLDINGS, INC. AJRD 0001217112 TURCHIN MARTIN 222 N. PACIFIC COAST HIGHWAY, SUITE 500 EL SEGUNDO CA 90245 1 Common Stock 2020-03-04 4 S 0 5000 52.25 D 86194 D Common Stock 15610 I By Rabbi Trust Common Stock 1000 I Coulter Turchin Trust Common Stock 7500 I Martin Turchin IRA Rollover Common Stock 3000 I Peter Turchin Trust Common Stock 1000 I Tyler Turchin Trust The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.94 to $52.78, inclusive. The reporting person undertakes to provide to Aerojet Rocketdyne Holdings, Inc., any security holder of Aerojet Rocketdyne Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (1) to this Form 4. /s/ Rebecca A. Bauer, attorney-in-fact 2020-03-05