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CONDENSED BALANCE SHEETS - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 13,165 $ 130,981
Short-term investments 120,882 0
Accounts receivable and unbilled receivable 395 320
Prepaid expenses and other current assets 3,327 2,055
Total current assets 137,769 133,356
Property and equipment, net 383 624
Operating lease right-of-use assets 3,017 343
Other assets 143 404
Total Assets 141,312 134,727
Current liabilities:    
Accounts payable 396 1,366
Accrued expenses 4,010 3,851
Operating lease liabilities 594 860
Other current liabilities 42 42
Total current liabilities 5,042 6,119
Derivative financial instruments—warrants 5 285
Operating lease liabilities, net of current portion 2,691 9
Other liabilities 30 156
Total Liabilities 7,768 6,569
Commitments and contingencies (Note 8)
Stockholders’ equity    
Preferred stock, 20,000 shares authorized; (Note 7) 1 1
Common stock, $0.0001 par value, 150,000 shares authorized; 39,552 and 36,781 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively 4 4
Additional paid-in capital 384,551 361,819
Service receivables (666) (2,171)
Accumulated other comprehensive income 16 0
Accumulated deficit (250,362) (231,495)
Total stockholders’ equity 133,544 128,158
Total liabilities and stockholders’ equity $ 141,312 $ 134,727