CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 169,516	$ 48,539
Investments	75,118	0
Prepaid expenses	4,566	467
Other current assets	65	100
Total current assets	249,265	49,106
Restricted cash equivalents	1,559	1,559
Property and equipment, net	5,852	4,728
Operating lease right-of-use assets	16,356	17,117
Other assets	2,111	3,398
Total assets	275,143	75,908
Current liabilities:
Accounts payable	2,369	2,361
Accrued expenses	4,293	6,260
Operating lease liability	1,164	863
Other current liabilities	478	723
Total current liabilities	8,304	10,207
Long-term liabilities:
Operating lease liabilities—non-current	16,731	17,430
Total liabilities	25,035	27,637
Stockholders’ equity (deficit):
Preferred stock, $0.0001 par value; 10,000,000 and 0 shares authorized as of June 30, 2021 and December 31, 2020, respectively; 0 shares issued and outstanding as of June 30, 2021 and December 31, 2020
Common stock, $0.0001 par value; 400,000,000 and 420,000,000 shares authorized as of June 30, 2021 and December 31, 2020 respectively; 37,142,950 and 893,231 shares issued and 36,885,372 and 505,074 outstanding as of June 30, 2021 and December 31, 2020, respectively	4	1
Additional paid-in capital	343,421	2,158
Accumulated deficit	(93,317)	(61,224)
Total stockholders’ equity (deficit)	250,108	(59,065)
Total liabilities, redeemable convertible preferred stock and stockholders’ equity (deficit)	$ 275,143	75,908
Series A-1 Redeemable Convertible Preferred Stock
Long-term liabilities:
Redeemable convertible preferred stock		2
Series A-2 Redeemable Convertible Preferred Stock
Long-term liabilities:
Redeemable convertible preferred stock		42,786
Series B Redeemable Convertible Preferred Stock
Long-term liabilities:
Redeemable convertible preferred stock		$ 64,548