INTERNATIONAL ISOTOPES INC. (OTCBB:INIS) Files An 8-K Entry into a Material Definitive Agreement

Item 1.01.

Entry into a Material Definitive Agreement.

On May 4, 2017, International Isotopes Inc. (the Company) entered
into a First Modification to Cobalt-60 Pellet Supply Agreement
(the Amendment) with Nordion (Canada) Inc., as general partner of
and on behalf of Nordion Sterilization LP (Nordion), to which the
Cobalt-60 Pellet Supply Agreement, dated April 7, 2015, between
the Company and Nordion (the Agreement) was amended to, among
other things, reduce the amount of cobalt-60 pellets to be
supplied under the Agreement and modify certain pricing terms,
commitment fees and progress payments to be made under the
Agreement. The Amendment also modified the Agreement to permit
Nordion to terminate the Agreement if certain amounts of
cobalt-60 pellets are not supplied by the Company under the
Agreement over a two year period.

The foregoing description of the Amendment does not purport to be
complete and is subject to, and is qualified in its entirety by
reference to, the full text of the document, which is attached
hereto as Exhibit 10.1 to this Current Report on Form8-K, and is
incorporated herein by reference.

Item 9.01.

Financial Statements and Exhibits.

(d) Exhibits.

Certain portions of the exhibit have been omitted to a
confidential treatment request. Omitted information has been
filed separately with the SEC.

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.

EXHIBIT INDEX

Certain portions of the exhibit have been omitted

About INTERNATIONAL ISOTOPES INC. (OTCBB:INIS)

International Isotopes Inc. is a manufacturer of nuclear medicine calibration and reference standards, a range of products, including cobalt teletherapy sources, and a selection of radioisotopes and radiochemicals for medical research and clinical devices. Its segments include Nuclear Medicine Standards, Cobalt Products, Radiochemical Products, Fluorine Products, Radiological Services and Transportation. The Nuclear Medicine Standards segment manufactures sources and standards associated with Single Photon Emission Computed Tomography (SPECT) imaging, patient positioning and calibration or operational testing of dose measuring equipment for the nuclear pharmacy industry. Cobalt Products include the production of bulk cobalt (cobalt-60), fabrication of cobalt capsules for radiation therapy or various industrial applications, and recycling of expended cobalt sources. Radiochemical Products include production and distribution of various isotopically pure radiochemicals.

INTERNATIONAL ISOTOPES INC. (OTCBB:INIS) Recent Trading Information

INTERNATIONAL ISOTOPES INC. (OTCBB:INIS) closed its last trading session down -0.0034 at 0.0765 with 2,000 shares trading hands.