================================================================================ 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): SEPTEMBER 30, 2002 HYBRIDON, INC. (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CERTIFICATE OF INCORPORATION) COMMISSION FILE NUMBER 0-27352 DELAWARE 04-3072298 (STATE OR OTHER JURISDICTION OF (I.R.S. EMPLOYER INCORPORATION OR ORGANIZATION) IDENTIFICATION NO.) 345 VASSAR STREET 02139 CAMBRIDGE, MASSACHUSETTS (ZIP CODE) (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (617) 679-5500 (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE) ================================================================================ ITEM 5. OTHER EVENTS On September 30, 2002, Hybridon, Inc. announced that it would recognize approximately $26 million of previously deferred revenue as revenue in the third quarter of fiscal year 2002. A copy of the press release announcing the accounting change has been filed with this Current Report on Form 8-K as Exhibit 99.1 and is incorporated herein by reference. ITEM 7. EXHIBITS 99.1 Press release dated September 30, 2002. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. HYBRIDON, INC. Date: September 30, 2002 /s/ Robert G. Andersen ----------------------------------- Robert G. Andersen Chief Financial Officer and Vice President of Operations and Planning INDEX TO EXHIBITS Exhibit No. Description ----------- ----------- 99.1 Press release dated September 30, 2002 regarding accounting change.