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v3.25.3

Commitments and Contingencies (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2025
Loss Contingencies [Line Items] |  |  |  |  |
Expense related to 401(k) Plan match contributions |  |  | $ 0 |  | $ 0
Loss contingency liability |  |  | 0 |  | 0
Research and development | [1] | $ 2,473 | 20,347 |  | $ 43,059
Cell Line License Agreement | WuXi Biologics Ireland Limited |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Research and development |  |  |  | $ 150 |
Percent of net sales, royalty payment (less than) |  |  |  | 1.00% |
Option agreement, termination period |  |  |  |  | 6 months
Option agreement termination period due to breach of contract |  |  |  |  | 60 days
Option agreement termination period due to failure to pay |  |  |  |  | 30 days
Indemnification Agreement |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Losses incurred to date |  |  | 0 |  | $ 0
Loss contingency liability |  |  | $ 0 |  | $ 0
[1] | Includes related party amount of $6,175 and $21,244 for the three and nine months ended September 30, 2025, respectively, and $2,473 for the period from September 19, 2024 (inception) through September 30, 2024.

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