As disclosed in April 2019, International Isotopes Inc. previously entered into a Manufacturing and Supply Agreement with Progenics Pharmaceuticals, Inc. (Progenics), pursuant to which the Company agreed to provide contract manufacturing services to Progenics for certain of its products. On December 21, 2020, the Company and Progenics entered into an agreement, pursuant to which, among other things, the Manufacturing Agreement was terminated effective immediately, Progenics was granted certain access to the company's facilities to remove specified equipment, and Progenics agreed to make a termination payment consisting of cash and the value of certain equipment. As part of the agreement, Progenics relinquished all claims to improvements made to the Company's facility and all equipment purchased by Progenics in connection with the Manufacturing Agreement with the exception of certain specified equipment.