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v3.21.2

Condensed Statements of Cash Flows - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Cash flows from operating activities |  |
Net loss | $ (15,762) | $ (10,538)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation, amortization and accretion | 144 | 893
Impairment loss on property and equipment and intangible asset |  | 1,185
Stock-based compensation | 2,050 | 188
Restructuring payments | (875) | (88)
Non-cash interest expense on convertible notes |  | 125
Issuance costs for convertible notes |  | 24
Gain on issuance of convertible notes |  | (63)
Gain on sale of PNAi technology | (2,691) |
Change in fair value of convertible notes |  | 775
Change in fair value of non-marketable equity securities | 645 |
Changes in operating assets and liabilities: |  |
Prepaid expense and other current assets | (3,012) | (6)
Accounts payable | 55 | (3)
Accrued and other current liabilities | 2,176 | 264
Other liabilities |  | (183)
Net cash used in operating activities | (17,270) | (7,427)
Cash flows from investing activities |  |
Proceeds from sale of PNAi technology | 796 |
Purchase of property and equipment |  | (99)
Net cash provided by (used in) investing activities | 796 | (99)
Cash flows from financing activities |  |
Proceeds from exercise of stock options | 550 | 23
Proceeds from issuance of convertible notes |  | 5,602
Proceeds from issuance of Class A common stock upon initial public offering, net of underwriting discounts and commissions | 51,176 |
Payment of offering costs related to initial public offering | (2,765) |
Payment issuance costs related to convertible promissory notes |  | (24)
Payment on capital lease obligations |  | (112)
Net cash provided by financing activities | 48,961 | 5,489
Net increase (decrease) in cash and cash equivalents and restricted cash | 32,487 | (2,037)
Cash, cash equivalents and restricted cash, beginning of period | 53,997 | 3,558
Cash, cash equivalents and restricted cash, end of period | 86,484 | 1,521
Supplemental disclosure of cash flow information |  |
Cash paid for interest |  | 21
Reclassification of redeemable convertible preferred stock into common stock upon initial public offering | 139,576 |
Non-marketable equity securities received as partial proceeds from sale of PNAi technology | 1,759 |
Lease assignment | 136 |
Cash and cash equivalents [Member] |  |
Cash flows from financing activities |  |
Cash, cash equivalents and restricted cash, end of period | 86,191 | 1,451
Restricted cash [Member] |  |
Cash flows from financing activities |  |
Cash, cash equivalents and restricted cash, end of period | $ 293 | $ 70

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