Aerojet Redmond Awarded United Space Alliance’s Coveted Space Flight Awareness Supplier Award

SACRAMENTO, Calif., July 8, 2010 – Aerojet, a GenCorp (NYSE: GY) company, announced today that its Redmond operations has been awarded United Space Alliance’s (USA) prestigious Space Flight Awareness Supplier Award.

Aerojets Propellant-Saving Xenon Ion Thruster Exceeds 30,000 Hours of Operation

SACRAMENTO, Calif., June 29, 2010 – Aerojet, a GenCorp (NYSE: GY) company, announced today that its innovative ion propulsion engine – built in partnership between Aerojet and NASA’s Glenn Research Center – has completed a test series encompassing the requirements of a wide range of ambitious space missions, including the recently announced Flagship Technology Demonstrator first mission (FTD-1)

Aerojet THAAD Motor Provides Boost for Low Endo-Atmospheric Target Intercept Test

SACRAMENTO, Calif., June 29, 2010 – Aerojet, a GenCorp (NYSE: GY) company, announced the company’s Terminal High Altitude Area Defense (THAAD) boost motor performed nominally during a low endo-atmospheric engagement of a unitary target. This test was conducted today at the Pacific Missile Range in Kauai, Hawaii during the THAAD Flight Test 14.

GenCorp Names Linda Beech Cutler Vice President, Corporate Responsibility and Glenn Mahone Vice President, Communications

SACRAMENTO, Calif., June 28, 2010 – GenCorp Inc. (NYSE: GY) announced today that Linda Beech Cutler, formerly GenCorp vice president, Corporate Communications has assumed the newly created position of vice president, Corporate Responsibility, and that Glenn Mahone, formerly Aerojet executive director, Strategic Communications, has been named vice president, Communications.

Aerojet Named Society of Women Engineers’ 2010 Sustaining Benefactor of the Year

SACRAMENTO, Calif., June 28, 2010 – Aerojet, a GenCorp (NYSE: GY) company, announced today that the Society of Women Engineers (SWE) has named Aerojet as the 2010 Sustaining Benefactor of the Year for the Society of Women Engineers for Region A.