ATK under Contract to Israel Aerospace Industries for Solar Array on the AMOS-6

Selection Highlights 100-percent flight success on more than 50 solar array wings on-orbit

ATK’s (ATK) Space Components Division in Goleta, Calif. signed a contract with Israel Aerospace Industries (IAI) to provide the solar array to power the AMOS-6 (Affordable Modular Optimized Satellite). The solar array is ATK’s heritage Planar Unfolding Modular Array (PUMA), which has demonstrated low non-recurring engineering cost (NRE), low risk, ease of satellite implementation, and 100-percent flight success performance on more than 50 solar array wings on-orbit.

With variants having been in continuous production for more than ten years for programs like Boeing’s GPS-IIF satellites and Orbital’s STAR2 geosynchronous (GEO) satellites, ATK’s PUMA array platform was a natural fit for IAI’s high-power commercial needs.

“We are pleased with this award for our modular PUMA solar array platform, which was adapted to meet the required 10.3 kW end-of-life power for the AMOS-6 communication satellite,” said David Shanahan, vice president and general manager, ATK Space Components Division. “Our tremendous success rate is a record we are proud of.”

The contract calls for delivery of ATK’s solar array in 18 months, with the option to perform work on the AMOS-7 solar array should IAI receive the follow-on contract from Spacecom in Israel.

ATK is an aerospace, defense, and commercial products company with operations in 21 states, Puerto Rico, and internationally. News and information can be found on the Internet at www.atk.com.

Certain information discussed in this press release constitutes forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Although ATK believes that the expectations reflected in such forward-looking statements are based on reasonable assumptions, it can give no assurance that its expectations will be achieved. Forward-looking information is subject to certain risks, trends and uncertainties that could cause actual results to differ materially from those projected. Among those factors are: changes in governmental spending, budgetary policies and product sourcing strategies; the company’s competitive environment; the terms and timing of awards and contracts; and economic conditions. ATK undertakes no obligation to update any forward-looking statements. For further information on factors that could impact ATK, and statements contained herein, please refer to ATK’s most recent Annual Report on Form 10-K and any subsequent quarterly reports on Form 10-Q and current reports on Form 8-K filed with the U.S. Securities and Exchange Commission.