Aerojet Rocketdyne Completes Delivery of 200th THAAD Booster Motor and DACS Unit

SACRAMENTO, Calif., May 6, 2015 – Aerojet Rocketdyne (NYSE: AJRD) announced today that it has completed the delivery of its 200th booster motor and Divert and Attitude Control System (DACS) for the Terminal High Altitude Area Defense (THAAD) weapon system.

Aerojet Rocketdyne Selected to Start Negotiations for Contract to Design and Develop Advanced Propulsion System for Human Spaceflight to Mars and Cislunar Space

SACRAMENTO, Calif., April 23, 2015 – Aerojet Rocketdyne, a GenCorp (NYSE: GY) company, has been selected by the NASA Advanced Exploration Systems Division to start negotiations for a contract to design and demonstrate an advanced propulsion system that would enable human spaceflight to cislunar space and beyond to Mars.

Aerojet Rocketdyne’s Camden Facility Receives Arkansas Safety Awards

Company Once Again Reaches One Million Hours With no Lost-Time Injuries

Aerojet Rocketdyne Receives Prestigious Award for Program Affordability from Key Customer Raytheon

SACRAMENTO, Calif., April 13, 2015 – Aerojet Rocketdyne, a GenCorp (NYSE: GY) company, announced that it received an award for exceptional performance in the area of affordability from prime customer Raytheon at a recent supplier conference.

Aerojet Rocketdyne Receives Contract to Continue Development of NASA’s Evolutionary Xenon Gridded Ion Thruster System

SACRAMENTO, Calif., April 6, 2015 – Aerojet Rocketdyne, a GenCorp (NYSE: GY) company, has been awarded a contract worth approximately $18 million from NASA Glenn Research Center to complete the development of NASA’s Evolutionary Xenon Thruster-Commercial (NEXT-C) Gridded Ion Thruster System.