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Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 41,723 $ 51,954
Short-term marketable securities 0 31,143
Prepaid expenses and other current assets 423 4,396
Assets held for sale 354 0
Total current assets 42,500 87,493
Property and equipment, net 543 2,739
Right of use assets 1,339 28,980
Restricted cash 1,967 1,699
Other long-term assets 0 327
Total assets 46,349 121,238
Current liabilities:    
Accounts payable 338 3,114
Accrued expenses 7,847 5,891
Lease liabilities, current portion 1,427 2,021
Term loan, current portion 0 10,000
Total current liabilities 9,612 21,026
Lease liabilities, net of current portion 0 26,761
Term loan, net of current portion 0 4,167
Other long-term liabilities 0 89
Total liabilities 9,612 52,043
Stockholders’ equity:    
Preferred stock, $0.001 par value; 10,000,000 shares authorized, no shares issued or outstanding at September 30, 2023 and December 31, 2022 0 0
Common stock, $0.001 par value; 200,000,000 shares authorized, 36,926,285 and 35,262,083 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively 37 35
Additional paid-in capital 340,308 331,023
Accumulated other comprehensive loss 10 (198)
Accumulated deficit (303,618) (261,665)
Total stockholders’ equity 36,737 69,195
Total liabilities and stockholders’ equity $ 46,349 $ 121,238