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v3.25.3

Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Cash flows from operating activities: |  |  |  |  |  |
Net loss |  |  | $ (21,968) | $ (82,456) |  |
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |  |  |
Stock-based compensation |  |  | 1,773 | 4,777 |  |
Depreciation expense | $ 100 |  | 359 | 320 |  |
Impairment of property and equipment | 0 | $ 0 | 0 | 1,883 | $ 1,900 | $ 1,600
Write-off of deferred financing costs |  |  |  | 140 |  |
Impairment of right-of-use assets | 0 | 0 | 0 | 22,836 | 22,800 |
Gain on sale of property and equipment |  |  | (8) |  |  |
Net amortization of premium on short-term investments |  |  |  | (2,009) |  |
Changes in operating assets and liabilities: |  |  |  |  |  |
Prepaid expenses and other current assets |  |  | 1,484 | (750) |  |
Operating lease right-of-use assets |  |  | 2,349 | 570 |  |
Other assets |  |  |  | 1,111 |  |
Accounts payable |  |  | (619) | (774) |  |
Accrued expenses and other current liabilities |  |  | (1,483) | (5,400) |  |
Restructuring liability |  |  | (1,288) | 4,855 |  |
Operating lease liabilities |  |  | (3,001) | (2,437) |  |
Deferred revenue |  |  | (391) | (1,325) |  |
Net cash used in operating activities |  |  | (22,793) | (58,659) |  |
Cash flows from investing activities: |  |  |  |  |  |
Purchases of property and equipment |  |  | (20) | (2,396) |  |
Proceeds from the sale of property and equipment |  |  | 18 |  |  |
Purchases of short-term investments |  |  |  | (47,949) |  |
Maturity of short-term investments |  |  |  | 102,519 |  |
Net cash (used in) provided by investing activities |  |  | (2) | 52,174 |  |
Cash flows from financing activities: |  |  |  |  |  |
Proceeds from sale of common stock, warrants and pre-funded warrants |  |  | 4,999 | 8,819 |  |
Payment of deferred offering costs |  |  | (726) | (290) |  |
Proceeds from exercise of stock options |  |  |  | 3 |  |
Net cash provided by financing activities |  |  | 4,273 | 8,532 |  |
Net (decrease) increase in cash, cash equivalents and restricted cash |  |  | (18,522) | 2,047 |  |
Cash, cash equivalents and restricted cash, beginning of period |  |  | 42,570 | 23,745 | 23,745 |
Cash, cash equivalents and restricted cash, end of period | $ 24,048 | $ 25,792 | 24,048 | 25,792 | $ 42,570 | $ 23,745
Supplemental disclosure of non-cash financing and investing activities: |  |  |  |  |  |
Property and equipment purchases included in accounts payable |  |  | $ 67 |  |  |
Right of Use Asset in Exchange for Lease Liability |  |  |  | $ 13,667 |  |

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