CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 64,106	$ 63,032
Short-term investments	71,391	114,648
Prepaid expenses	1,971	2,939
Other current assets	421	674
Total current assets	137,889	181,293
Property and equipment, net	18,816	20,572
Operating lease right-of-use assets	123,334	126,177
Restricted cash	13,691	13,691
Other assets	1,000	1,000
Total assets	294,730	342,733
Current liabilities:
Accounts payable	12,325	8,887
Accrued expenses and other current liabilities	8,098	12,600
Deferred revenue — related party	7,320	7,824
Operating lease liability	8,546	8,137
Total current liabilities	36,289	37,448
Deferred revenue, net of current — related party	57,775	58,127
Operating lease liability, net of current	105,966	108,290
Research and development funding liability	18,000	18,000
Total liabilities	218,030	221,865
Commitments and contingencies
Stockholders’ equity
Common stock, par value of $0.00001 per share; 775,000,000 shares authorized; 180,615,514 and 180,514,014 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively	2	2
Additional paid-in capital	1,014,175	1,009,138
Accumulated other comprehensive (loss) income	(1)	82
Accumulated deficit	(937,476)	(888,354)
Total stockholders’ equity	76,700	120,868
Total liabilities and stockholders’ equity	$ 294,730	$ 342,733