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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net loss | $ (33,376) | $ (63,118)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 1,291 | 1,781
Stock-based compensation expense | 2,782 | 7,407
Accretion of discount on marketable securities | (670) | (2,615)
Gain on sale of fixed assets | (288) | (70)
Asset impairment | 0 | 1,469
Non-cash lease expense | 2,526 | 2,297
Changes in operating assets and liabilities: |  |
Prepaid expenses and other assets | 76 | 2,571
Accounts payable and accrued expenses | (5,430) | (4,883)
Operating lease liabilities, net | (2,251) | (1,412)
Deferred revenue | (4,642) | (4,673)
Other long-term liabilities | 132 | (43)
Net cash used in operating activities | (39,850) | (61,289)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchase of property and equipment | (72) | (41)
Proceeds from sales of property and equipment | 963 | 148
Purchases of marketable securities | (29,016) | (88,855)
Maturities of marketable securities | 72,427 | 146,324
Net cash provided by investing activities | 44,302 | 57,576
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Proceeds from issuance of common stock | 19 | 108
Net cash provided by financing activities | 19 | 108
NET INCREASE (DECREASE) IN CASH | 4,471 | (3,605)
Cash, cash equivalents and restricted cash at beginning of year | 8,970 | 12,575
Cash, cash equivalents and restricted cash at end of period | 13,441 | 8,970
Reconciliation of cash, cash equivalents and restricted cash: |  |
Cash and cash equivalents | 11,703 | 7,205
Restricted cash | 1,738 | 1,765
Total cash, cash equivalents and restricted cash | 13,441 | 8,970
Supplemental schedule of non-cash investing and financing activities: |  |
Right of use assets obtained in exchange for operating lease obligations | $ 0 | $ 6,402

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