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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Cash flows from operating activities: |  |  |
Net loss | $ (33,694) | $ (34,203) | $ (29,698)
Adjustments required to reconcile net loss to net cash used in operating activities: |  |  |
Stock-based compensation | 4,328 | 4,276 | 2,772
Depreciation | 482 | 461 | 715
Increase (decrease) in severance pay, net | (81) | (101) | 184
Loss (gain) from property and equipment sales and disposals | 12 | (3) | (12)
Decrease (increase) in interest receivables from short-term bank deposits | (584) | 469 | (532)
Decrease (increase) in trade receivables | 0 | 2,000 | (2,000)
Decrease (increase) in other accounts receivable and prepaid expenses | 3,043 | (2,802) | (1,613)
Decrease (increase) in long-term prepaid expenses | 12 | (31) | (1,187)
Decrease in operating lease right of use asset | 658 | 525 | 475
Increase (decrease) in trade payables and other accounts payable and accrued expenses | (1,601) | 3,367 | 3,817
Increase (decrease) in deferred participation in R&D expenses | (6,019) | 3,708 | (829)
Decrease in operating lease liability | (1,062) | (416) | (412)
Net cash used in operating activities | (34,506) | (22,750) | (28,320)
Cash flows from investing activities: |  |  |
Proceeds from maturity of short-term bank deposits | 114,445 | 136,850 | 70,300
Investment in short-term bank deposits | (76,900) | (129,945) | (152,350)
Purchase of property and equipment | (477) | (292) | (166)
Costs of disposal of property and equipment | (10) | 0 | 0
Proceeds from sale of property and equipment | 2 | 3 | 44
Net cash provided by (used in) investing activities | 37,060 | 6,616 | (82,172)
Cash flows from financing activities: |  |  |
Proceeds from issuance of ordinary shares, net | 0 | 14,958 | 74,147
Proceeds from exercise of warrants | 0 | 425 | 18,325
Proceeds from exercise of stock-based awards | 353 | 1,455 | 15,991
Net cash provided by financing activities | 353 | 16,838 | 108,463
Increase (decrease) in cash, cash equivalents and restricted cash | 2,907 | 704 | (2,029)
Cash, cash equivalents and restricted cash at the beginning of the year | 8,514 | 7,810 | 9,839
Cash and cash equivalents and restricted cash at the end of the year | 11,421 | 8,514 | 7,810
Supplemental disclosure of non-cash investing and financing activities: |  |  |
Purchase of property and equipment | 117 | 116 | 16
Right-of-use asset obtained in exchange for operating lease liability | 237 | 0 | (194)
Cash paid (received) during the year for: |  |  |
Interest payments received from short-term bank deposits and cash equivalents | 852 | 1,364 | 1,232
Reconciliation of cash, cash equivalents and restricted cash: |  |  |
Cash and cash equivalents | 11,059 | 7,801 | 7,143
Restricted cash | 362 | 713 | 667
Total cash, cash equivalents and restricted cash | $ 11,421 | $ 8,514 | $ 7,810

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