Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 63,434	$ 90,549
Short-term investments	135,979
Accounts receivable	4,141	4,623
Prepaid expenses and other current assets	5,370	1,595
Total current assets	208,924	96,767
Property and equipment, net	3,580	4,463
Right-of-use asset	13,544	14,453
Restricted cash	2,577	2,577
Other assets	502
Total assets	229,127	118,260
Current liabilities:
Accounts payable	5,264	5,385
Accrued expenses and other current liabilities	9,830	6,671
Deferred revenue, current	23,915	20,705
Operating lease liability, current	1,000	880
Total current liabilities	40,009	33,641
Deferred revenue, net of current	61,083	72,718
Operating lease liability, net of current	12,097	12,869
Warrant liability	5,465
Long-term debt	9,877
Total liabilities	128,531	119,228
Commitments and Contingencies (see Note 5 and Note 8)
Redeemable convertible preferred stock value	256,520	110,995
Stockholders’ deficit:
Common stock, par value of $0.0001 per share; 370,000,000 and 180,000,000 shares authorized as of September 30, 2020 and December 31, 2019; 1,634,121 and 1,426,641 shares issued and outstanding as of September 30, 2020 and December 31, 2019	1	1
Additional paid-in capital	6,095	5,524
Accumulated other comprehensive loss	8
Accumulated deficit	(162,028)	(117,488)
Total stockholders’ deficit	(155,924)	(111,963)
Total liabilities, redeemable convertible preferred stock and stockholders’ deficit	229,127	118,260
Series Seed Redeemable Convertible Preferred Stock
Current liabilities:
Redeemable convertible preferred stock value	1,000	1,000
Series A Redeemable Convertible Preferred Stock
Current liabilities:
Redeemable convertible preferred stock value	109,995	$ 109,995
Series B Redeemable Convertible Preferred Stock
Current liabilities:
Redeemable convertible preferred stock value	$ 145,525