Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 84,018	$ 124,287
Investments	470,500	657,036
Prepaid expenses	17,787	17,348
Other current assets	5,974	10,533
Total current assets	578,279	809,204
Property and equipment, net	1,726	5,911
Operating lease assets	39,990	51,762
Restricted cash	1,336	2,119
Intangible asset	0	2,300
Total assets	621,331	871,296
Current liabilities:
Accounts payable	7,705	14,097
Accrued expenses	13,645	21,236
Operating lease liabilities	3,765	5,727
Deferred revenue		7,679
Other current liabilities	463	1,990
Total current liabilities	25,578	50,729
Operating lease liabilities, net of current portion	28,693	42,775
Total liabilities	54,271	93,504
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock, $0.001 par value; 300,000,000 shares authorized as of December 31, 2024 and December 31, 2024; 173,868,949 and 167,755,715 shares issued and outstanding as of December 31, 2025 and December 31, 2024,respectively	168	168
Additional paid-in capital	2,580,928	2,516,905
Accumulated other comprehensive loss	733	(991)
Accumulated deficit	(2,014,769)	(1,738,290)
Total stockholders' equity	567,060	777,792
Total liabilities and stockholders' equity	$ 621,331	$ 871,296