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Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 11,943 $ 130,981
Short-term investments 128,878 0
Accounts receivable and unbilled receivable 535 320
Prepaid expenses and other current assets 4,771 2,055
Total current assets 146,127 133,356
Property and equipment, net 382 624
Operating lease right-of-use assets 2,796 343
Other assets 239 404
Total Assets 149,544 134,727
Current liabilities:    
Accounts payable 1,439 1,366
Accrued liabilities 4,527 3,851
Operating lease liabilities 551 860
Other current liabilities 42 42
Total current liabilities 6,559 6,119
Derivative financial instruments—warrants 0 285
Operating lease liabilities, net of current portion 2,568 9
Other liabilities 0 156
Total liabilities 9,127 6,569
Commitments and contingencies
Stockholders’ equity    
Preferred stock, $0.001 par value, 20,000 shares authorized; (Note 5) 1 1
Common stock, $0.0001 par value, 150,000 shares authorized; 41,964 and 36,781 shares issued and outstanding at December 31, 2021 and December 31, 2020, respectively 4 4
Additional paid-in capital 400,503 361,819
Service receivable (139) (2,171)
Accumulated other comprehensive loss (142) 0
Accumulated deficit (259,810) (231,495)
Total stockholders’ equity 140,417 128,158
Total Liabilities and Stockholders’ Equity $ 149,544 $ 134,727