Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)

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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 115,420 $ 173,984
Marketable securities 30,164  
Accounts receivable   7
Contract assets 3,632 2,324
Prepaid expenses and other current assets 4,055 2,242
Total current assets 153,271 178,557
Property and equipment, net 13,458 14,213
Marketable securities - noncurrent 21,117  
Other long-term assets 2,410 1,966
Restricted cash 3,086 3,086
Right-of-use asset – operating lease 14,299 14,831
Right-of-use assets – financing leases 402 597
Total assets 208,043 213,250
Current liabilities:    
Accounts payable 4,108 3,603
Accrued expenses 11,839 11,084
Deferred revenue, current portion 11,995 12,209
Financing lease obligations, current portion 285 265
Operating lease obligation, current portion 1,653 1,463
Total current liabilities 29,880 28,624
Deferred revenue, net of current portion 2,980 9,877
Financing lease obligations, net of current portion 140 356
Operating lease obligation, net of current portion 23,317 24,578
Warrant liability 5,594 19,711
Debt, net of debt discount, long term 40,072 39,551
Commitments and contingencies (See Note 9)
Stockholders' equity:    
Preferred stock, $0.001 par value; 10,000,000 shares authorized at September 30, 2021 and December 31, 2020; 0 shares issued and outstanding at September 30, 2021 and December 31, 2020
Common stock, $0.001 par value; 200,000,000 shares authorized at September 30, 2021 and December 31, 2020; 61,942,950 and 56,222,746 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively 61 56
Additional paid-in capital 545,770 467,518
Accumulated other comprehensive loss (5)  
Accumulated deficit (439,766) (377,021)
Total stockholders' equity 106,060 90,553
Total liabilities and stockholders' equity $ 208,043 $ 213,250