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Apexian Sublicense Agreement | 9 Months Ended
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Sep. 30, 2025
Apexian Sublicense Agreement [Abstract] |
Apexian Sublicense Agreement |
10. | Apexian Sublicense Agreement
On January 21, 2020, the Company entered into a sublicense agreement (as amended on June 4, 2020, the “Apexian Sublicense Agreement”) with Apexian, pursuant to which it obtained exclusive worldwide patent and other intellectual property rights that constitute a Ref-1 Inhibitor program relating to therapeutic applications to treat disorders related to ophthalmic and diabetes mellitus conditions. The lead compound in the Ref-1 Inhibitor program is APX3330, which the Company intends to develop as an oral tablet therapeutic to treat diabetic retinopathy initially, and potentially later to treat diabetic macular edema, geographic atrophy and age-related macular degeneration. In connection with the Apexian Sublicense Agreement, the Company issued a total of 891,422 shares of its common stock to Apexian and to certain affiliates of Apexian in calendar year 2020. The Company also agreed to make one-time milestone payments under the Apexian Sublicense Agreement for each of the first ophthalmic indication and the first diabetes mellitus indication for the development and regulatory milestones, and once for each of several sales milestones. These milestone payments include (i) payments for specified developmental and regulatory milestones (including completion of the first Phase 2 trial and the first Phase 3 pivotal trial in the United States, and filing and achieving regulatory approval from the FDA for the first New Drug Application for a compound) totaling up to $11 million in the aggregate and (ii) payments for specified sales milestones of up to $20 million in the aggregate, which net sales milestone payments are payable once, upon the first achievement of such milestone. Lastly, the Company also agreed to make a royalty payment equal to a single-digit percentage of its net sales of products associated with the covered patents under the Apexian Sublicense Agreement. If it is not terminated pursuant to its terms, the Apexian Sublicense Agreement shall remain in effect until expiration of the last to expire of the covered patents. None of the milestone or royalty payments were triggered or deemed probable as of September 30, 2025.

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- Definition The entire disclosure for Apexian Sublicense Agreement related to exclusive worldwide patent and other intellectual property rights that constitute a Ref-1 Inhibitor program relating to therapeutic applications to treat disorders related to ophthalmic and diabetes mellitus conditions. + References No definition available. + Details
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