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Segment Reporting | 9 Months Ended
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Sep. 30, 2025
Segment Reporting [Abstract] |
Segment Reporting | 16. Segment Reporting The Company operates as a single reportable and operating segment dedicated to the research and development, commercialization, and sale of mAbs in the U.S to deliver protection from serious viral infectious diseases. The determination of a single reportable segment is consistent with the consolidated financial information regularly reviewed by the Chief Operating Decision Maker (the “CODM”) in assessing performance and deciding how to allocate resources on a consolidated basis. The CODM assesses performance and allocates resources based on the Company’s net loss reported on the consolidated statements of operations and comprehensive loss. The CODM’s area of focus is period over period fluxes and budget-to-actual variances when assessing performance and deciding how to allocate resources. The following table presents information about reported segment revenues, and significant segment expenses as provided to the CODM.
|  | Three Months Ended September 30, |  |  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Revenue: |  |  |  |  |  |  |  |  |  |  |  |
Product revenue, net |  | $ | 13,129 |  |  | $ | 9,300 |  |  | $ | 36,219 |  |  | $ | 11,564 |
Total revenue |  |  | 13,129 |  |  |  | 9,300 |  |  |  | 36,219 |  |  |  | 11,564 |
Operating costs and expenses: |  |  |  |  |  |  |  |  |  |  |  |
Cost of product revenue |  |  | 1,088 |  |  |  | 806 |  |  |  | 2,607 |  |  |  | 894 |
Direct, external research and development expenses by program: |  |  |  |  |  |  |  |  |  |  |  |
Pemivibart |  |  | 333 |  |  |  | 4,637 |  |  |  | 2,629 |  |  |  | 27,936 |
VYD2311 |  |  | 265 |  |  |  | 45,045 |  |  |  | 2,778 |  |  |  | 64,175 |
Adintrevimab |  |  | 41 |  |  |  | 128 |  |  |  | 368 |  |  |  | 475 |
Total direct, external research and development expenses by program |  |  | 639 |  |  |  | 49,810 |  |  |  | 5,775 |  |  |  | 92,586 |
Unallocated research and development expenses(1) |  |  | 6,585 |  |  |  | 7,108 |  |  |  | 20,046 |  |  |  | 23,261 |
Other segment items(2) |  |  | 12,767 |  |  |  | 11,021 |  |  |  | 41,717 |  |  |  | 35,739 |
Stock-based compensation |  |  | 3,073 |  |  |  | 2,866 |  |  |  | 9,079 |  |  |  | 16,731 |
Total operating costs and expenses |  |  | 24,152 |  |  |  | 71,611 |  |  |  | 79,224 |  |  |  | 169,211 |
Loss from operations |  |  | (11,023 | ) |  |  | (62,311 | ) |  |  | (43,005 | ) |  |  | (157,647 | )
Other income: |  |  |  |  |  |  |  |  |  |  |  |
Other income, net(3) |  |  | 553 |  |  |  | 1,572 |  |  |  | 1,586 |  |  |  | 6,165 |
Total other income, net |  |  | 553 |  |  |  | 1,572 |  |  |  | 1,586 |  |  |  | 6,165 |
Net loss |  | $ | (10,470 | ) |  | $ | (60,739 | ) |  | $ | (41,419 | ) |  | $ | (151,482 | )
(1) Includes personnel related expenses (excluding research and development stock-based compensation) and external discovery-related and other costs. (2) Includes commercial, general and administrative personnel related costs (excluding stock-based compensation), professional and consulting fees and other costs. Includes interest income of $554 and $1,563 for the three months ended September 30, 2025 and 2024, respectively and interest income of $1,587 and $6,325 for the nine months ended September 30, 2025 and 2024, respectively.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-21 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name 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