| SUPPLEMENTAL FINANCIAL INFORMATION Prepaid expenses and other assets as of September 30, 2026 and December 31, 2025 consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | September 30, 2026 | | Prepaid Expenses and Other Current Assets | | Other Assets, Long-Term | | Total Prepaid Expenses and Other Assets | | Research and development service agreements | $ | 3,599 | | $ | 4 | | $ | 3,603 | | | Other receivables | 1,747 | | — | | 1,747 | | | Prepaid insurance | 694 | | — | | 694 | | | Dues and subscriptions | 302 | | — | | 302 | | | Property and equipment, net (1) | — | | 68 | | 68 | | | Right-of-use asset | — | | 36 | | 36 | | | Other | 188 | | 92 | | 280 | | | Total | $ | 6,530 | | $ | 200 | | $ | 6,730 | |
| | | | | | | | | | | | | | | | | | | December 31, 2025 | | Prepaid Expenses and Other Current Assets | | Other Assets, Long-Term | | Total Prepaid Expenses and Other Assets | | Research and development service agreements | $ | 3,527 | | | $ | 29 | | | $ | 3,556 | | | Other receivables | 625 | | | — | | | 625 | | | Prepaid insurance | 601 | | | — | | | 601 | | | Dues and subscriptions | 368 | | | — | | | 368 | | | Right-of-use asset | — | | | 140 | | | 140 | | | Property and equipment, net (1) | — | | | 103 | | | 103 | | | Other | 266 | | | 78 | | | 344 | | | Total | $ | 5,387 | | | $ | 350 | | | $ | 5,737 | |
(1) As of September 30, 2026 and December 31, 2025, accumulated depreciation totaled approximately $0.1 million and $0.2 million, respectively. Accrued expenses and other current liabilities as of September 30, 2026 consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | | | Accrued Expenses and Other Current Liabilities | | Research and development | | | | | $ | 6,304 | | | Compensation and other employee liabilities | | | | | 3,463 | | | Interest | | | | | 201 | | | Operating lease liability | | | | | 39 | | | Other | | | | | 161 | | | Total | | | | | $ | 10,168 |
Accrued expenses and other current liabilities as of December 31, 2025 consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | | | Accrued Expenses and Other Current Liabilities | | Research and development | | | | | $ | 5,427 | | | Compensation and other employee liabilities | | | | | 4,066 | | | Interest | | | | | 249 | | | Operating lease liability | | | | | 150 | | | Other | | | | | 180 | | | Total | | | | | $ | 10,072 | |
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