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Condensed Consolidated Balance Sheets (Unaudited) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Current assets    
Cash and cash equivalents $ 40,462 $ 7,671
Restricted cash 50 4,151
Accounts receivable, net 205 366
Inventory 2,667 1,998
Prepaid expenses and other current assets 2,712 1,969
Total current assets 46,096 16,155
Property, plant and equipment, net 1,374 1,422
Right-of-use assets 107 285
Total assets 47,577 17,862
Current liabilities    
Accounts payable 753 2,018
Accrued expenses 5,230 4,685
Lease liabilities, current 35 186
Loan payable, current 5,080 7,846
Convertible notes payable, current 2,876 0
Total current liabilities 13,974 14,735
Warrant liability 5,773 0
Other liabilities, non-current 1,111 1,144
Loan payable, non-current 0 3,070
Convertible notes payable, non-current 2,000 4,772
Total liabilities 22,858 23,721
Commitments and contingencies (see note 13)
Stockholders’ equity (deficit)    
Preferred stock, $0.01 par value; 10,000,000 shares authorized; 37,787 and 11,357 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively 0 0
Common stock, $0.01 par value; 80,000,000 shares authorized; 19,688,991 shares and 10,046,571 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively 197 100
Additional paid-in capital 518,607 451,608
Accumulated deficit (494,026) (457,484)
Accumulated other comprehensive loss (59) (83)
Total stockholders’ equity (deficit) 24,719 (5,859)
Total liabilities and stockholders’ equity $ 47,577 $ 17,862