UNITED STATES SECURITIES 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 - September 17, 2003 Commission file number: 0-22923 INTERNATIONAL ISOTOPES INC. ------------------------------------------------------ (Exact name of registrant as specified in its charter) Texas 74-2763837 ------------------------ ----------------------------------- (State of incorporation) IRS Employer Identification Number) 4137 Commerce Circle, Idaho Falls, Idaho 83401 ---------------------------------------- ---------- (Address of principal executive offices) (Zip Code) (208) 524-5300 ---------------------------------------------------- (Registrant's telephone number, including area code) Item 5. Other events. The Company completed on September 12, 2003 its previously announced rights offering to existing shareholders. Total subscriptions and over subscriptions equaled $1,312,514, resulting in a new cash infusion of $405,677 and a conversion of $906,806 of debt into equity by certain shareholders who had previously loaned funds to the Company. For further details see the press release attached hereto as Exhibit 99.1. Item 7. Exhibits. 99.1 Press Release Re: Completion of Rights Offering 2 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. International Isotopes Inc. (Registrant) By: /s/ Steve T. Laflin ------------------------------------- Steve T. Laflin President and Chief Executive Officer Date: September 17, 2003 3