BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 30,605	$ 31,828
Marketable securities	171,123	259,405
Prepaid expenses and other current assets	2,652	3,882
Total current assets	204,380	295,115
Restricted cash	4,044	4,044
Property and equipment, net	4,908	3,929
Right-of-use asset	1,792	1,707
Other assets	5,376	303
Total assets	220,500	305,098
Current liabilities:
Accounts payable	6,777	7,840
Accrued expenses and other current liabilities	13,093	9,621
Operating lease liability	1,832	1,740
Total current liabilities	21,702	19,201
Other liabilities	3,361	0
Total liabilities	25,063	19,201
Commitments (note 8)
Stockholders’ equity:
Additional paid-in capital	531,682	505,723
Accumulated other comprehensive income (loss)	(1,692)	(711)
Accumulated deficit	(334,558)	(219,120)
Total stockholders’ equity	195,437	285,897
Total liabilities and stockholders’ equity	220,500	305,098
Voting Common Stock
Stockholders’ equity:
Common stock	4	4
Non-voting Common Stock
Stockholders’ equity:
Common stock	$ 1	$ 1