Note 4 - Other revenue

The Company has a grant from a government-sponsored entity for research and development related activities that provides payments for reimbursed costs, which included overhead and general and administrative costs, as well as an administrative fee. The Company recognizes revenue from grants as it performs services under this arrangement. Associated expenses are recognized when incurred as research and development expense. There was no grant revenue recognized for the three months and six months ended June 30, 2026 and 2025, respectively.

On April 7, 2022, the Company entered into a license and supply agreement (the “License Agreement”) with Immedica Pharma AB (“Immedica”), pursuant to which Immedica licensed the exclusive product rights for commercialization of Iomab-B (I-131 apamistamab) in the European Economic Area, Middle East and North Africa (“EUMENA”), including Algeria, Andorra, Bahrain, Cyprus, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Libya, Monaco, Morocco, Oman, Palestine, Qatar, San Marino, Saudi Arabia, Switzerland, Syria, Tunisia, Turkey, the United Arab Emirates, the United Kingdom, the Vatican City and Yemen. Upon signing, the Company was entitled to an upfront, non-refundable payment of $35 million from Immedica, which was received in May 2022. Under the terms of the License Agreement, the Company was eligible to receive certain regulatory and commercial milestone payments and royalties on net sales of the product in the licensed territories. The Company continues to retain commercialization rights in the United States and the rest of the world. The $35 million upfront payment was initially recorded as Long-term license revenue - deferred due to uncertainty regarding Immedica’s ability to obtain regulatory approval of the product by the European Medicines Agency. Subsequently, Immedica notified the Company that it would not pursue regulatory approval of Iomab-B in the licensed territories. In the current period, based on the facts and circumstances, the Company concluded that Immedica’s right to asserting a claim related to the $35 million had expired. Accordingly, the condition previously constraining recognition of the $35 million upfront payment no longer existed and that the non-refundable payment was no longer subject to a significant reversal. Therefore, the Company recognized the previously deferred $35 million upfront payment as revenue in June 2026.