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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 1,103 $ 7,363
Accounts receivable, net of allowance for doubtful accounts of $34 and $11 as of December 31, 2023 and 2022 63 201
Prepaid expenses and other current assets 295 300
Total current assets 1,461 7,864
Property and equipment, net 94 170
Operating lease right-of-use asset, net 1,261 1,588
Other assets 171 171
Total assets 2,987 9,793
Current liabilities:    
Accounts payable 890 683
Accrued expenses and other current liabilities 2,385 2,246
Deferred revenue 0 341
Operating lease liability - current 333 315
Total current liabilities 3,608 3,585
Operating lease liability - noncurrent 982 1,316
Total liabilities 4,590 4,901
Commitments and Contingencies  
Stockholders’ equity:    
Preferred stock, $0.001 par value, 25,000,000 shares authorized and no shares issued and outstanding as of December 31, 2023 and 2022 0 0
Common stock, $0.001 par value, 100,000,000 shares authorized, 23,666,534 and 20,076,773 shares issued and outstanding as of December 31, 2023 and 2022, respectively 24 20
Additional paid-in capital 150,548 145,476
Accumulated deficit (152,175) (140,604)
Total stockholders’ equity (1,603) 4,892
Total liabilities and stockholders’ equity $ 2,987 $ 9,793