Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 103,664	$ 346,071
Marketable securities	190,481	0
Prepaid expenses and other current assets	2,900	2,595
Total current assets	297,045	348,666
Property and equipment, net	15,205	12,325
Operating lease right-of-use assets	47,102	0
Restricted cash	5,320	5,338
Other long-term assets	384	0
Total assets	365,056	366,329
Current liabilities:
Accounts payable	4,294	6,558
Accrued expenses and other current liabilities	7,817	10,080
Current portion of operating lease liability	2,662	0
Total current liabilities	14,773	16,638
Defined benefit plan liability	2,138	2,176
Operating lease liability	46,095	0
Total liabilities	63,006	18,814
Commitments and contingencies
Stockholders' equity
Common stock, $0.0001 par value; 500,000,000 shares authorized, 46,873,974 shares issued and 46,684,658 shares outstanding as of June 30, 2022; and 500,000,000 shares authorized, 46,794,295 shares issued and 46,535,966 shares outstanding as of December 31, 2021	5	5
Additional paid-in capital	476,939	471,566
Accumulated other comprehensive loss	(2,458)	(2,021)
Accumulated deficit	(172,436)	(122,035)
Total stockholders' equity	302,050	347,515
Total liabilities and stockholders' equity	$ 365,056	$ 366,329