CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current Assets
Cash and cash equivalents	$ 75,413	$ 121,907
Marketable securities	93,915	110,545
Prepaid expenses and other current assets	5,165	3,711
Total current assets	174,493	236,163
Property and equipment, net	28,981	19,803
Operating lease right-of-use assets	19,558	20,341
Restricted cash	2,449	2,448
Other assets	28
Total assets	225,509	278,755
Current Liabilities
Accounts payable	562	1,280
Accrued expenses and other current liabilities	8,740	14,850
Operating lease liabilities	785	671
Total current liabilities	10,087	16,801
Operating lease liabilities, net of current portion	34,584	28,304
Total liabilities	44,671	45,105
Commitments and contingencies (See Note 11)
Stockholders' Equity
Common stock, $0.0001 par value: Authorized: 200,000,000 shares at September 30, 2022 and December 31, 2021. Issued and outstanding: 36,932,597 and 34,498,443 shares at September 30, 2022 and December 31, 2021, respectively.	4	3
Additional paid-in capital	417,624	402,244
Accumulated other comprehensive loss	(742)	(202)
Accumulated deficit	(236,048)	(168,395)
Total stockholders' equity	180,838	233,650
Total liabilities and stockholders' equity	$ 225,509	$ 278,755