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Apexian Sublicense Agreement | 6 Months Ended
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Jun. 30, 2026
Apexian Sublicense Agreement [Abstract] |
Apexian Sublicense Agreement | 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 June 30, 2026. On March 16, 2026, the Company entered into a termination and IP assignment agreement (the “Termination and IP Assignment Agreement”) with Apexian that provides for the termination of a prior sublicense agreement and the sale and assignment of certain patents, know‑how, materials, and regulatory assets related to the Company’s legacy APX‑2009, APX‑2014 and APX‑3330 programs. The effectiveness of the agreement and the closing of the contemplated transactions are conditioned upon, among other things, the receipt by the Company of a non‑refundable upfront payment. As of June 30, 2026, the non-refundable upfront payment had not been received and the closing of the transaction had not occurred. Accordingly, no intellectual property, materials, or regulatory assets had been transferred, and the Company retained ownership and control of all such assets as of that date. No amounts were recognized in the Company’s condensed consolidated financial statements for the three and six months ended June 30, 2026 related to the Termination and IP Assignment Agreement. Subsequent to June 30, 2026, the Company received the non-refundable upfront payment contemplated by the Termination and IP Assignment Agreement with Apexian, and the transaction closed during the third quarter of 2026. Upon closing, the related patents, know-how, materials and regulatory assets associated with the APX-2009, APX-2014 and APX-3330 programs were transferred to Apexian in accordance with the agreement.

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- Definition Apexian Sublicense Agreement [Abstract] + References No definition available. + Details
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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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