v3.25.4

Collaboration and other arrangements (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2025
Significant agreements |  |  |  |  |
Research and development | $ 53,140,000 | $ 48,004,000 | $ 168,860,000 | $ 135,472,000 |
Prepaid expenses and other current assets | 8,262,000 |  | $ 8,262,000 |  | $ 8,351,000
Roche |  |  |  |  |
Significant agreements |  |  |  |  |
Termination period |  |  | 60 days |  |
Prepaid expenses and other current assets | 0 |  | $ 0 |  | $ 0
Roche | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement |  |  |  |  |
Significant agreements |  |  |  |  |
Research and development | 0 | 0 | 0 | 0 |
Proceeds from collaborators | $ 0.0 | $ 1,800,000 | $ 0.0 | $ 1,800,000 |

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