CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 121,947	$ 92,076
Marketable securities	176,483	279,915
Prepaid expenses and other current assets	11,556	4,926
Total current assets	309,986	376,917
Property and equipment, net	2,123	2,282
Operating lease right-of-use asset	3,014	3,777
Other non-current assets	291	191
Total assets	315,414	383,167
Current liabilities:
Accounts payable	4,112	1,517
Accrued expenses	26,744	21,911
Operating lease liability, current	1,611	1,559
Other current liabilities	38	44
Total current liabilities	32,505	25,031
Operating lease liability, non-current	1,346	2,165
Early-exercise liability	0	1
Total liabilities	33,851	27,197
Commitments and contingencies (Note 9)
Stockholders' equity (deficit):
Preferred stock (undesignated), $0.0001 par value; 10,000,000 shares authorized and no shares issued and outstanding at June 30, 2023 and December 31, 2022	0	0
Common stock, $0.0001 par value; 1,000,000,000 shares authorized, 109,570,333 shares issued and outstanding at June 30, 2023; 109,044,046 shares issued and outstanding at December 31, 2022	11	11
Additional paid-in capital	900,549	889,657
Accumulated other comprehensive loss	(22)	(272)
Accumulated deficit	(618,975)	(533,426)
Total stockholders' equity	281,563	355,970
Total liabilities, preferred stock and stockholders' equity	$ 315,414	$ 383,167