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Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 125,407 $ 138,685
Marketable securities 22,405 0
Accounts receivable 8,342 7,224
Prepaid expenses and other current assets 6,971 5,434
Total current assets 163,125 151,343
Property and equipment, net 1,301 1,395
Right-of-use asset, net 10,676 10,948
Long-term restricted cash 1,379 1,379
Other assets 265 370
Total assets 176,746 165,435
Current liabilities:    
Accounts payable 594 443
Accrued expenses 6,847 8,146
Loan payable 460 0
Lease liability 942 908
Deferred revenue 75,764 72,050
Total current liabilities 84,607 81,547
Non-current liabilities:    
Loan payable, net of current portion 24,551 24,793
Lease liability 9,403 9,647
Deferred revenue 32,301 38,746
Warrant liabilities 45,455 28,708
Total liabilities 196,317 183,441
Commitments and contingencies (Note 17)
Stockholders’ (deficit) equity:    
Preferred stock, $0.0001 par value; 10,000,000 shares authorized; no shares issued and outstanding at March 31, 2021 and December 31, 2020 0 0
Common stock, $0.0001 par value; 200,000,000 shares authorized; 112,977,004 and 108,071,249 shares issued and outstanding as of March 31, 2021 and December 31, 2020, respectively 11 11
Additional paid-in capital 414,214 391,175
Accumulated deficit (429,226) (404,629)
Accumulated other comprehensive loss (4,570) (4,563)
Total stockholders’ (deficit) equity (19,571) (18,006)
Total liabilities and stockholders’ (deficit) equity $ 176,746 $ 165,435