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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 42,587 $ 33,262
Short-term investments 13,472 48,818
Accounts receivable 0 11
Prepaid expenses and other assets 4,588 4,231
Total current assets 60,647 86,322
Property and equipment, net 4,102 4,123
Right-of-use asset 8,281 8,606
Other noncurrent assets 1,437 1,393
Total assets 74,467 100,444
Current liabilities:    
Accounts payable 2,250 1,866
Accrued expenses and other current liabilities 3,228 3,525
Deferred revenue, current 7,267 8,343
Total current liabilities 12,745 13,734
Long-term debt, net 16,730 16,589
Lease liability, noncurrent 7,696 7,959
Other noncurrent liabilities 656 656
Total liabilities 37,827 38,938
Stockholders’ equity:    
Preferred stock, $0.0001 par value per share; 10,000,000 shares authorized, no shares issued and outstanding, June 30, 2021 and December 31, 2020 0 0
Common stock, $0.0001 par value per share; 200,000,000 shares authorized, 88,096,694 issued and outstanding, June 30, 2021; 87,651,352 issued and outstanding, December 31, 2020 9 9
Additional paid-in capital 169,337 167,379
Accumulated other comprehensive income 5 83
Accumulated deficit (132,711) (105,965)
Total stockholders' equity 36,640 61,506
Total liabilities and stockholders’ equity $ 74,467 $ 100,444