Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 357,011	$ 120,256
Marketable securities (Note 4)	491,265	368,488
Prepaid expenses and other current assets	22,938	21,524
Total current assets	871,214	510,268
Marketable securities, non-current (Note 4)	771,158	362,159
Property and equipment, net (Note 6)	43,175	50,457
Right-of-use assets, operating leases	42,351	47,407
Other non-current assets	9,114	1,950
Restricted cash	5,800	5,794
Total assets	1,742,812	978,035
Current liabilities:
Accounts payable	4,015	5,989
Accrued expenses (Note 8)	42,274	34,867
Deferred revenue	22,925	13,576
Operating lease liabilities	11,941	11,594
Finance lease liabilities	1,815	1,518
Other current liabilities	242	223
Total current liabilities	83,212	67,767
Non-current liabilities
Deferred revenue, net of current portion	11,440	0
Operating lease liabilities, net of current portion	67,034	72,423
Finance lease liabilities, net of current portion	1,462	2,226
Total liabilities	163,148	142,416
Commitments and contingencies (Note 9)
Stockholders' equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized as of December 31, 2025 and 2024; 0 shares issued and outstanding as of December 31, 2025 and 2024, respectively	0	0
Common stock, $0.0001 par value; 150,000,000 shares authorized at December 31, 2025 and 2024, 81,323,532 and 64,890,193 shares issued and outstanding at December 31, 2025 and 2024, respectively	8	7
Additional paid-in capital	2,643,817	1,591,707
Accumulated deficit	(1,065,961)	(754,610)
Accumulated other comprehensive income (loss)	1,800	(1,485)
Total stockholders' equity	1,579,664	835,619
Total liabilities and stockholders' equity	$ 1,742,812	$ 978,035