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 March 16, 2005 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 8.01. Other events. On March 16, 2005 the registrant issued a press release reporting that it had received approximately $1 million in proceeds from the exercise of Series A warrants. Item 9.01. Financial Statements and Exhibits. (c) Exhibits 99 Press Release dated March 16, 2005. 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: March 16, 2004 3