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Acquisitions - Asset Acquisition (Details) - Vertuis Bio, Inc. - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
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Jan. 31, 2023 | Dec. 31, 2023
Business Acquisition [Line Items] |  |
Shares of Insmed common stock issued on closing | $ 9,250 |
Shares of Insmed common stock issuable on July 1, 2024 | $ 1,000 |
Total purchase price |  | $ 10,250

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