SpaceDev, Inc. will hold its annual meeting of stockholders on Thursday, August 10, 2006 at 9:00 a.m. PDT. The meeting will take place at SpaceDev’s corporate headquarters located at 13855 Stowe Drive, Poway, CA 92064.

All stockholders of the company are cordially invited to attend. Stockholders of record as of June 19, 2006 were sent a proxy statement on or about July 14, 2006 setting forth the matters to be voted upon.

Management will review the company’s accomplishments during the past year and update stockholders on its plans for the future. Investors may also access a live web cast of the meeting through the investor relations section of SpaceDev’s web site, www.spacedev.com.

About SpaceDev

SpaceDev (OTCBB: SPDV – News) creates and sells affordable and innovative space products and solutions to government and commercial enterprises. SpaceDev’s innovations include the design, manufacture, marketing and operation of sophisticated micro- and nano-satellites, hybrid rocket-based orbital Maneuvering and orbital Transfer Vehicles as well as sub-orbital and orbital hybrid rocket-based propulsion systems for safe human space flight. In addition, Starsys, Inc., a wholly-owned subsidiary of SpaceDev, is engaged in the design and manufacture of mechanical and electromechanical subsystems and components for spacecraft. Starsys’ subsystems enable critical spacecraft functions such as pointing solar arrays and communication antennas and restraining, deploying and actuating of moving spacecraft components. For more information, visit www.spacedev.com and www.starsys.com.

Contact:

The Investor Relations Group

Investor Contact:

Dian Griesel/Tom Caden/Erika Moran

Media Contact:

Mike Graff

212-825-3210