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Agreements with Horizon | 6 Months Ended
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Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Agreements with Horizon | 14. Agreements with Horizon From August 2022 until November 2023, Legacy Q32 was a party to the Collaboration and Option Agreement (the “Horizon Collaboration Agreement”) and the Asset Purchase Agreement (the “Purchase Agreement,” and together with the Horizon Collaboration Agreement, the “Horizon Agreements”), each between Legacy Q32 and Horizon Therapeutics Ireland DAC (“Horizon”), pursuant to which Legacy Q32 received $55.0 million in initial consideration and staged development funding for the completion of the two ongoing Phase 2 trials for bempikibart, and Horizon had an option to acquire the bempikibart program at a prespecified price, subject to certain adjustments. In October 2023, Amgen Inc. (“Amgen”) completed its acquisition of Horizon Therapeutics public limited company (“Horizon plc”). Following the acquisition, the Company agreed with Amgen to mutually terminate the Horizon Agreements. In November 2023, the Company and Horizon entered into a termination agreement (the “Horizon Termination Agreement”), pursuant to which Horizon’s option to acquire the bempikibart program was terminated. As a result, the Company retained all initial consideration and development funding received under the Horizon Collaboration Agreement and regained full development and commercial rights to bempikibart. In consideration for the Horizon Termination Agreement, the Company agreed to pay Horizon regulatory and sales milestones payments upon the first achievement of certain regulatory and sales milestones with respect to bempikibart. All amounts previously recognized as revenue were reversed in the fourth quarter of 2023 and a refund liability was established for the $55.0 million cash received during the term of the Horizon Collaboration Agreement. On November 7, 2025, the Company and Amgen entered into an amendment to the Horizon Termination Agreement (the “Amgen Amendment”) pursuant to which the Company issued Horizon a one-time equity grant of 553,695 shares of the Company’s common stock as full consideration of the milestone payments under the Horizon Termination Agreement. Following the transactions contemplated by the Amgen Amendment, the Company has no remaining obligations to Amgen, including with respect to the regulatory and sales-based milestone payments set forth in the Horizon Collaboration Agreement. Therefore, the Company derecognized the $55.0 million refund liability previously recorded for the $55.0 million of cash received under the Horizon Collaboration Agreement and recognized collaboration arrangement revenue for the difference between the equity issuance, and the refund liability as the consideration was no longer constrained.

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- Definition The entire disclosure for collaborative arrangements in which the entity is a participant, including a) information about the nature and purpose of such arrangements; b) its rights and obligations thereunder; c) the accounting policy for collaborative arrangements; and d) the income statement classification and amounts attributable to transactions arising from the collaborative arrangement between participants. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 808 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479402/808-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 808 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479402/808-10-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 808 -Publisher FASB -URI https://asc.fasb.org/808/tableOfContent + Details
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