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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 24,690 $ 33,091
Accounts receivable 1,978 0
Short-term marketable securities 51,148 68,760
Prepaid expenses and other current assets 3,489 3,338
Total current assets 81,305 105,189
Property and equipment, net 3,630 4,794
Operating lease right-of-use assets 3,268 4,582
Long-term marketable securities 0 21,655
Restricted cash 405 405
Other assets 827 549
Total assets 89,435 137,174
Current liabilities:    
Accounts payable 658 2,718
Accrued and other liabilities 6,848 8,662
Lease liabilities, current portion 2,226 2,193
Total current liabilities 9,732 13,573
Lease liabilities, noncurrent portion 3,376 5,600
Warrant liability 326 8,301
Total liabilities 13,434 27,474
Commitments and contingencies (Note 6 and Note 14)
Stockholders' equity:    
Preferred stock, $0.0001 par value, 10,000 shares authorized; no shares issued and outstanding as of December 31, 2022 and 2021 0 0
Common stock, $0.0001 par value, 500,000 shares authorized as of December 31, 2022 and 2021; 30,088 and 35,034 shares issued and outstanding as of December 31, 2022 and 2021, respectively 3 4
Additional paid-in-capital 254,892 252,464
Accumulated other comprehensive loss (241) (119)
Accumulated deficit (178,653) (142,649)
Total stockholders' equity 76,001 109,700
Total liabilities and stockholders' equity $ 89,435 $ 137,174