X0303 4 2011-03-30 0000040888 GENCORP INC GY 0001212516 CONLEY CHRIS W HIGHWAY 50 & AEROJET ROAD RANCHO CORDOVA CA 95742 1 VP - EH&S Common Stock 2011-03-24 5 J 0 E 32 0 D 9298 I By Plan Trust Common Stock 2011-03-30 4 A 0 6500 0 A 35191 D Common Stock 2011-03-30 4 A 0 3250 0 A 38441 D Stock Options (Right to Buy) 6.01 2011-03-30 4 A 0 5367 0 A 2018-03-30 Common Stock 5367 5367 D Shares held in the GenCorp Retirement Savings Plan Trust (Plan Trust) as of March 24, 2011 which reflects the value in the participant's account as per the Plan Administrator's records. In this case, shares held in the GenCorp Retirement Savings Plan Trust (Plan Trust) have been adjusted downward to reflect 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. 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 FY 2013. Grant to Reporting Person of restricted stock under the Amended and Restated 2009 Equity and Performance Incentive Plan. Shares of restricted stock will vest on March 30, 2014. Grant to Reporting Person of stock options under the Amended and Restated 2009 Equity and Performance Incentive Plan. Stock options will vest based on meeting certain performance targets for FY 2013. Rebecca A. Bauer as Attorney-in-Fact 2011-03-31