Accrued expenses consist of the following (in thousands): | | | | | | | | | | | | | June 30, 2026 | | December 31, 2025 | | Payroll and employee related expenses | $ | 2,641 | | | $ | 3,985 | | | Collaboration and licensing | 1,044 | | | 320 | | | Accrued patent fees | 147 | | | 205 | | | Accrued research and development costs | 7,955 | | | 2,521 | | | Accrued professional and consulting services | 2,528 | | | 2,059 | | | Accrued interest | 497 | | | — | | | | | | | Accrued equity offering costs | 32 | | | 30 | | | Other | 298 | | | 378 | | | Accrued expenses | $ | 15,142 | | | $ | 9,498 | |
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