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Prepaid Expenses and other assets (Tables) | 9 Months Ended
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Sep. 30, 2025
Prepaid Expenses and other assets |
Schedule of prepaid expenses and other assets | Prepaid expenses and other assets consisted of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2025 |  | December 31, 2024
Research and development | ​ | $ | — | ​ | $ | 1,715
Collaboration receivable (Note 10) | ​ |  | — | ​ |  | 2,864
Other receivables (a) | ​ |  | 1,636 | ​ |  | —
Deposits | ​ |  | — | ​ |  | 925
Insurance | ​ |  | 1,406 | ​ |  | 340
Other | ​ |  | 48 | ​ |  | 72
​ | ​ | $ | 3,090 | ​ | $ | 5,916
| (a) | “Other receivables” primarily consisted of the Termination Fee and Expense Reimbursement, equipment sales, sales and use tax refunds, and research and development tax refunds.

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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + References No definition available. + Details
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