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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 105,842 $ 92,563
Restricted cash 283 283
Prepaid expenses and other current assets 2,860 7,112
Held for sale assets 185 0
Total current assets 109,170 99,958
Operating lease assets 912 1,057
Property and equipment, net 0 2,894
Restricted cash, net of current portion 400 0
Other assets 40 40
Total assets 110,522 103,949
Current liabilities:    
Accounts payable 910 384
Accrued expenses and other current liabilities 5,002 11,732
Operating lease liabilities 1,647 999
Total current liabilities 7,559 13,115
Note payable, net of discount 0 15,276
Operating lease liabilities, net of current portion 105 188
Total liabilities 7,664 28,579
Commitments and contingencies (Note 7)
Stockholders’ equity:    
Common stock, $0.0001 par value; 150,000 shares authorized; 44,580 and 43,916 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively 4 4
Additional paid-in capital 571,344 564,798
Accumulated deficit (468,490) (489,432)
Total stockholders’ equity 102,858 75,370
Total liabilities and stockholders’ equity $ 110,522 $ 103,949