The following table sets forth total interest expense, annualized effective interest rate, and interest expense related to related parties, if applicable, for each of the debt instruments detailed above (in thousands): | | | | | | | | | | | | | | | | | | | Three Months Ended March 31, | | | | | | 2026 | | 2025 | | 2029 Senior Secured Notes | | | | | | | | | Contractual interest expense | | | | | $ | 1,072 | | | $ | 920 | | | Amortization of debt issuance costs | | | | | 40 | | | 38 | | | Amortization of debt discount/(premium) | | | | | (154) | | | (93) | | | Total interest expense | | | | | $ | 958 | | | $ | 865 | | | Related party interest expense | | | | | $ | 672 | | | $ | 672 | | | | | | | | | | | Working Capital Facility | | | | | | | | | Contractual interest expense | | | | | 9 | | | — | | | Amortization of debt issuance costs | | | | | 14 | | | — | | | Total interest expense | | | | | $ | 23 | | | $ | — | | | | | | | | | | | 2025 Convertible Notes | | | | | | | | | Contractual interest expense | | | | | $ | — | | | $ | 121 | | | Amortization of debt issuance costs | | | | | — | | | 15 | | | Amortization of debt discount/(premium) | | | | | — | | | 18 | | | Total interest expense | | | | | $ | — | | | $ | 154 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Other interest expense | | | | | $ | 80 | | | $ | 7 | | | Consolidated interest expense | | | | | $ | 1,061 | | | $ | 1,026 | |
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