BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 11,134	$ 25,291
Marketable securities	142,492	207,644
Prepaid expenses and other current assets	2,761	2,654
Total current assets	156,387	235,589
Restricted cash	4,044	4,044
Property and equipment, net	7,202	7,325
Operating lease right-of-use asset	29,182	30,412
Other assets	405	295
Total assets	197,220	277,665
Current liabilities:
Accounts payable	5,921	4,580
Accrued expenses and other current liabilities	13,579	15,768
Operating lease liability	2,365	1,481
Finance lease liability	359
Total current liabilities	22,224	21,829
Other liabilities	3,153	3,339
Operating lease liability	15,412	15,407
Total liabilities	40,789	40,575
Commitments (Note 8)
Stockholders’ equity:
Additional paid-in capital	711,091	693,252
Accumulated other comprehensive income	167	223
Accumulated deficit	(554,832)	(456,390)
Total stockholders’ equity	156,431	237,090
Total liabilities and stockholders’ equity	197,220	277,665
Voting Common Stock
Stockholders’ equity:
Common stock	4	4
Non-voting Common Stock
Stockholders’ equity:
Common stock	$ 1	$ 1