UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported): JANUARY 25, 2006 (JANUARY 23, 2006) ---------------------------------- SPACEDEV, INC. (Exact Name of Registrant as Specified in Charter) ---------------------------------- COLORADO 000-28947 84-1374613 (State or Other Jurisdiction (Commission File Number) (IRS Employer of Incorporation) Identification No.) 13855 STOWE DRIVE, POWAY, CALIFORNIA 92064 (Address of Principal Executive Offices) (Zip Code) Registrant's Telephone Number, Including Area Code: (858) 375-2030 Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) PAGE ITEM 8.01. OTHER EVENTS. On January 23, 2006, SpaceDev filed a joint proxy statement/prospectus supplement no. 1, which we refer to as supplement no. 1, updating and supplementing our joint proxy statement/prospectus dated December 29, 2005, which forms part of our registration statement on Form S-4 (Registration File No. 333-130244). The joint proxy statement/prospectus relates to the special meetings of the shareholders of SpaceDev, Inc. and Starsys Research Corporation and the proposed merger of Starsys with and into a wholly-owned subsidiary of SpaceDev, including the issuance of shares of SpaceDev common stock to Starsys shareholders pursuant to the related agreement and plan of merger and reorganization. This supplement is being sent to shareholders of SpaceDev and Starsys to advise them of the financing that SpaceDev recently consummated and to update the description of appraisal rights under California law. Among other things, supplement no.1 includes a supplemental discussion of risk factors related to the proposed merger referred to in the preceding paragraph, describes a significant financing recently completed by SpaceDev, discusses the rights of purchasers of SpaceDev securities in that financing (including a description of the new Series D Preferred Stock Certificates of Designation), and updates information about dissenters' appraisal rights with respect to the proposed merger. A complete copy of supplement no. 1 is filed as exhibit 99.1 hereto. The summaries of the transactions and the information included in supplement no. 1 set forth above do not purport to be complete and are qualified in their entirety by reference to this exhibit, which should be reviewed carefully. ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS. (c) Exhibits. 99.1 Joint Proxy Statement/Prospectus Supplement No. 1 filed January 23, 2006 to the Joint Proxy Statement/Prospectus filed on December 29, 2005 PAGE 1 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. SPACEDEV, INC. Date: January 25, 2006 By: /s/ RICHARD B. SLANSKY --------------------------------------- Richard B. Slansky President & Chief Financial Officer PAGE 2