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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Cash Flows From Operating Activities: |  |
Net loss | $ (28,452) | $ (23,210)
Adjustments required to reconcile net loss to net cash used in operating activities: |  |
Depreciation | 0 | 72
Stock-based compensation | 3,305 | 4,297
Loss from sale and disposal of fixed assets | 0 | 282
Gain on the sale of the MST Franchise | 0 | (12,918)
Amortization of premium or discount on marketable securities | (255) | 0
Unrealized gains on cash equivalents | 1 | 0
Changes in operating assets and liabilities: |  |
Decrease in inventory | 0 | 97
Decrease in trade receivables, prepaid and other current assets and operating lease right of use asset | 405 | 11,210
Decrease in trade payables, accrued expenses, employee related obligations, liability for employee severance benefits and other long-term liabilities | (559) | (8,681)
Increase (decrease) in operating lease liabilities | 214 | (349)
Net cash used in operating activities | (25,341) | (29,200)
Cash Flows From Investing Activities: |  |
Proceeds from the sale of the MST Franchise | 5,000 | 15,667
Purchases of marketable securities | (62,354) | 0
Net cash (used in) provided by investing activities | (57,354) | 15,667
Cash Flows From Financing Activities: |  |
(Redemption) proceeds of convertible preferred stock | (360) |
(Redemption) proceeds of convertible preferred stock |  | 211
Withholdings from exercise of options and issuance of shares for stock-based compensation arrangements, net | (67) | (28)
Net cash provided by financing activities | 82,394 | 1,653
Decrease in cash, cash equivalents and restricted cash | (301) | (11,880)
Cash, cash equivalents and restricted cash at beginning of the year | 30,975 | 42,855
Cash, cash equivalents and restricted cash at end of the year | 30,674 | 30,975
Cash and cash equivalents | 30,620 | 30,908
Restricted cash | 54 | 67
Total cash, cash equivalents and restricted cash | 30,674 | 30,975
Supplementary information on investing and financing activities not involving cash flows: |  |
Accretion of preferred stock | 149 | 0
Issuance of shares under employee share purchase plan | 48 | 37
Cashless exercise of warrants | 132 | 0
Amount due from sale of MST Franchise | 0 | 5,000
Additions to operating lease right of use assets | 207 | 0
Additions to operating lease liabilities | 214 | 0
Supplemental disclosure of cash flow information: |  |
Interest received | 1,139 | 446
Private Placement |  |
Cash Flows From Financing Activities: |  |
Proceeds related to the issuance of common shares and pre-funded warrants through private placement, net of issuance costs | 82,665 | 0
At-the-market Offering |  |
Cash Flows From Financing Activities: |  |
Proceeds related to the issuance of common shares through at-the-market offerings, net of issuance costs | $ 156 | $ 1,470

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