Orbital to Present at Raymond James 35th Annual Institutional Investor Conference on March 3

Orbital Sciences Corporation (ORB) one of the world’s leading space technology companies, announced today that Vice Chairman and Chief Financial Officer Garrett E. Pierce will make a presentation to investors and analysts at the Raymond James 35^th Annual Institutional Conference to be held in Orlando, FL on March 3, 2014. Mr. Pierce’s presentation is scheduled to begin at 7:30 a.m. (EST).

Orbital will provide a link to the live audio webcast of Mr. Pierce’s presentation on the company’s web site at: http://www.orbital.com/Investor/.

About Orbital

Orbital develops and manufactures small- and medium-class rockets and space systems for commercial, military and civil government customers. The company’s primary products are satellites and launch vehicles, including low-Earth orbit, geosynchronous-Earth orbit and planetary exploration spacecraft for communications, remote sensing, scientific and defense missions; human-rated space systems for Earth-orbit, lunar and other missions; ground- and air-launched rockets that deliver satellites into orbit; and missile defense systems that are used as interceptor and target vehicles. Orbital also provides satellite subsystems and space-related technical services to U.S. Government agencies and laboratories. More information about Orbital can be found at http://www.orbital.com. Follow the company on Twitter @OrbitalSciences.