X0306 4 2014-08-04 0000040888 GENCORP INC GY 0001212516 CONLEY CHRIS W 2001 AEROJET ROAD RANCHO CORDOVA CA 95742 1 VP - EH&S Common Stock 2014-08-04 4 M 0 5367 6.01 A 72710 D Common Stock 2014-08-04 4 J 0 40 18.17 A 9137 I By Plan Trust Common Stock 2014-08-05 4 S 0 1000 18.348 D 71710 D Common Stock 2014-08-05 4 S 0 4367 18.34 D 67343 D Stock Options (Right to Buy) 6.01 2014-08-04 4 M 0 5367 0 D 2018-03-30 Common Stock 5367 0 D Shares held in the GenCorp Retirement Savings Plan Trust (Plan Trust) as of August 4, 2014 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. In addition, the number shown has been rounded down to the nearest whole number. These options vested on February 5, 2014. Rebecca A. Bauer as Attorney-in-Fact 2014-08-06