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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 47,328 $ 123,469
Marketable securities 136,658 120,147
Accounts receivable 14,905 10,386
Inventory, net 4,598 4,388
Prepaid expenses and other current assets 14,712 21,170
Total current assets 218,201 279,560
Property, equipment and software, net 36,034 37,676
Other non current assets 17,210 18,009
Total assets 271,445 335,245
Current liabilities:    
Accounts payable 3,731 15,500
Accrued expenses and other current liabilities 32,967 33,755
Deferred revenue 25,562 20,646
Lease liabilities 4,837 4,677
Total current liabilities 67,097 74,578
Deferred revenue, net of current portion 6,364 0
Lease liabilities, net of current portion 19,512 20,791
Other non current liabilities 258 258
Total liabilities 93,231 95,627
Stockholders' equity:    
Common stock, $0.01 par value -- 125,000,000 shares authorized, 61,333,074 and 61,307,428 shares outstanding at March 31, 2022 and December 31, 2021, respectively 613 613
Additional paid-in capital 1,218,263 1,213,002
Accumulated other comprehensive loss (283) (61)
Accumulated deficit (1,040,379) (973,936)
Total stockholders' equity 178,214 239,618
Total liabilities and stockholders' equity $ 271,445 $ 335,245