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Commitments and Contingencies | 6 Months Ended
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Jun. 30, 2026
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | 10. Commitments and Contingencies As of June 30, 2026, the Company had ongoing clinical studies in various clinical trial stages. Its most significant contracts relate to agreements with CROs for clinical trials and preclinical studies and CDMOs for manufacturing which the Company enters into in the normal course of business. The contracts with CROs and CDMOs are generally cancellable, with notice, at the Company’s option. Operating lease In 2021, the Company entered into a long-term operating lease agreement for its current corporate headquarters in Waltham, Massachusetts (“headquarters lease”). The headquarters lease provides approximately 15,000 square feet for general office use and research lab facilities. The headquarters lease commencement date was January 1, 2022 and the lease term ends in December 2031. The Company has an option to extend the headquarters lease term for an additional five years. The initial rent for the office space is approximately $1.0 million per year, increasing every year by 3% for total aggregate payment of $11.1 million. Upon the commencement date, the Company established a right-of-use asset and lease liability on the condensed consolidated balance sheet. As part of the agreement, the Company arranged for a letter of credit for $0.6 million as security for the headquarters lease, which is considered restricted cash and included as restricted cash and restricted cash equivalents in the condensed consolidated balance sheet. The Company received $0.4 million in a tenant improvement allowance that was applied against the right-of-use asset. As of June 30, 2026, the Company’s headquarters lease had a weighted-average remaining lease term of 5.50 years and weighted average incremental borrowing rate of 7.5%. Amounts reported in the unaudited condensed consolidated balance sheet for leases where the Company is the lessee as of June 30, 2026 and December 31, 2025 were as follows (in thousands):
|  | June 30, 2026 |  |  | December 31, 2025 |
Assets: |  |  |  |  |  |
Operating lease right-of-use assets |  | $ | 4,770 |  |  | $ | 5,100 |
Total operating lease right-of-use assets |  | $ | 4,770 |  |  | $ | 5,100 |
Liabilities: |  |  |  |  |  |
Current: |  |  |  |  |  |
Operating lease liabilities |  | $ | 735 |  |  | $ | 693 |
Noncurrent: |  |  |  |  |  |
Operating lease liabilities, net of current portion |  |  | 4,561 |  |  |  | 4,943 |
Total operating lease liabilities |  | $ | 5,296 |  |  | $ | 5,636 |
The following table summarizes operating lease costs for the six months ended June 30, 2026 and 2025 (in thousands):
|  | June 30, |
|  | 2026 |  |  | 2025 |
Fixed lease costs |  | $ | 546 |  |  | $ | 530 |
Variable lease costs |  |  | 270 |  |  |  | 386 |
Total lease costs |  | $ | 816 |  |  | $ | 916 |
Variable lease costs were primarily related to operating expenses, taxes and insurance associated with the operating lease, which were assessed based on the Company’s proportionate share of such costs for the leased premises. As these costs are generally variable in nature, they were not included in the measurement of the operating lease right-of-use asset and related lease liability. Total lease costs are included as operating expenses in the Company’s unaudited condensed consolidated statements of operations. Future minimum lease payments under non-cancelable lease agreement as of June 30, 2026 and a reconciliation to the carrying amount of the lease liabilities presented in the consolidated balance sheet are as follows (in thousands):
|  | Minimum Rental Payments |
2026 |  | $ | 546 |
2027 |  |  | 1,124 |
2028 |  |  | 1,158 |
2029 |  |  | 1,193 |
Thereafter |  |  | 2,495 |
Total minimum lease payments |  |  | 6,516 |
Less imputed interest |  |  | (1,220 | )
Total lease liability |  | $ | 5,296 |
Lease liability, current portion |  |  | 735 |
Lease liability, net of current portion |  |  | 4,561 |
Total |  | $ | 5,296 |
License Agreements License Agreement with the University of Colorado In August 2017, the Company entered into an exclusive license agreement, as amended in February 2018, September 2018, and April 2019 (the “Colorado License Agreement”), with The Regents of the University of Colorado (“Colorado”), pursuant to which the Company obtained worldwide, royalty-bearing, sublicensable licenses under certain patents and know-how owned by Colorado and Medical University of South Carolina (“MUSC”) relating to the research, development and commercialization of ADX-097. The licenses granted to the Company were exclusive with respect to certain patent families and know-how and non-exclusive with certain other patent families and know-how. The licenses granted to the Company were also subject to certain customary retained rights of Colorado and MUSC and rights of the United States government owing to federal funding giving rise to inventions covered by the licensed patents. The Company agreed to use commercially reasonable efforts to develop, manufacture and commercialize ADX-097, including by using commercially reasonable efforts to achieve specified development and regulatory milestones by specified dates. In addition, the Company agreed to pay Colorado (i) development and sales milestone payments in an aggregate amount of up to $2.2 million per licensed product for the first three products, (ii) tiered royalty rates on cumulative net sales of licensed products in the low single digit percentages, (iii) 15% of sublicense income and (iv) ongoing fees associated with the prosecution, maintenance, or filing of the licensed patents. The Company’s obligation to pay royalties to Colorado would commence, on a licensed product-by-licensed product and country-by-country basis, from the first commercial sale of a licensed product in any country and expires on the later of (a) the last to expire valid claim within the licensed patents covering such licensed product in such country, and (b) 20 years following the effective date of the Colorado License Agreement, or April 2037 (the “Royalty Term”). On November 28, 2025, in connection with the ADX-097 Asset Sale, the Colorado License Agreement was amended and restated and all of the Company’s rights and obligations thereunder were transferred to Akebia. License Agreement with Bristol-Myers Squibb Company In September 2019, the Company entered into a license agreement, as amended in August 2021 and July 2022 (the “BMS License Agreement”) with Bristol-Myers Squibb Company (“BMS”), pursuant to which the Company obtained sublicensable licenses from BMS to research, develop and commercialize licensed products, including bempikibart, for any and all uses worldwide. The licenses granted to the Company are exclusive with respect to BMS’s patent rights and know-how relating to certain antibody fragments (including certain fragments of bempikibart) and non-exclusive with respect to BMS’s patent rights and know-how relating to the composition of matter and use of a specific region of bempikibart. BMS retained the right for it and its affiliates to use the exclusively licensed patents and know-how for internal, preclinical research purposes. Under the BMS License Agreement, the Company is prohibited from engaging in certain clinical development or commercialization of any antibody other than a licensed compound with the same mechanism of action until the earlier of the expiration of Q32’s obligation to pay BMS royalties or September 2029. In consideration for the license, the Company made an upfront payment to BMS of $8 million, issued 318,278 Series A preferred shares to BMS and agreed to use commercially reasonable efforts to develop and commercialize at least one licensed product in key geographic markets. In addition, the Company agreed to pay BMS (i) development and regulatory milestone payments in aggregate amounts ranging from $32 million to $49 million per indication for the first three indications and commercial milestone payments in an aggregate amount of up to $215 million on net sales of licensed products, (ii) tiered royalties ranging from rates in the mid-single digit percentages to up to 10% of net sales, with increasing rates depending on the cumulative net sales, (iii) up to 60% of sublicense income, which percentage decreases based on the development stage of bempikibart at the time of the sublicensing event, and (iv) ongoing fees associated with the prosecution, maintenance, or filing of the licensed patents. The Company’s obligation to pay BMS royalties under subsection (ii) above commences, on a licensed product-by-licensed product and country-by-country basis on the first commercial sale of a licensed product in a country and expires on the later of (x) 12 years from the first commercial sale of such Licensed Product in such country, (y) the last to expire licensed patent right covering bempikibart or such licensed product in such country, and (z) the expiration or regulatory or marketing exclusivity for such licensed product in such country (Royalty Term). If the Company undergoes a change of control prior to certain specified phase of development, the development and milestone payments are subject to increase by a low double digit percentage and the royalty rates are subject to increase by a low sub single digit percentage. Unless terminated earlier by either party pursuant to its terms, the BMS License Agreement will expire on a country-by-country and licensed product-by-licensed product basis upon the expiration of the last to expire Royalty Term with respect to such licensed product in such country. Either party may terminate the BMS License Agreement for the other party’s material breach, subject to a specified notice and cure period. BMS may terminate the BMS License Agreement if the Company fails to meet its diligence obligations under the BMS License Agreement, for the Company’s insolvency, or if the Company or its affiliates challenges the validity, scope, enforceability, or patentability of any of the licensed patents. The Company may terminate the BMS License Agreement for any reason upon prior written notice to BMS, with a longer notice period if a licensed product has received regulatory approval. If the BMS Agreement is terminated for the Company’s material breach, BMS will regain rights to bempikibart and the Company must grant BMS an exclusive license under the Company’s patent rights covering bempikibart, subject to a low single digit percentage royalty on net sales of bempikibart payable to the Company by BMS. In July 2024, the Company made a $4.0 million development milestone payment to BMS and recorded it as research and development expenses. As of June 30, 2026, no further events have occurred that would require payment of milestones, royalties or sublicense fees. Legal Proceedings The Company is not currently party to any material legal proceedings. The Company accounts for estimated losses with respect to legal proceedings and claims when such losses are probable and reasonably estimable. Legal costs associated with these matters are expensed when incurred. Indemnification Arrangements As permitted under Delaware law, the Company has agreements whereby it indemnifies certain of its investors, stockholders, employees, officers, and directors (collectively, the “Indemnified Parties”) for certain events or occurrences while the Indemnified Parties are, or were serving, at its request in such capacity. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has an Executive Liability insurance policy that limits its exposure and enables it to recover a portion of any future amounts paid up to $5.0 million. The Company believes the estimated fair value of these indemnification agreements is minimal. The Company enters into standard indemnification agreements in the ordinary course of business. Pursuant to these agreements, the Company indemnifies, holds harmless, and agrees to reimburse the Indemnified Parties for losses suffered or incurred by the Indemnified Parties, generally the Company’s business partners or customers, in connection with any U.S. patent or any copyright or other intellectual property infringement claim by any third party with respect to the Company’s products. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited. The Company has never incurred costs to defend lawsuits or settle claims related to these indemnification agreements.

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