Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 178,689	$ 133,359
Marketable securities	111,421	58,685
Prepaid expenses and other current assets	2,612	2,193
Total current assets	292,722	194,237
Property and equipment, net	7,242	7,742
Right-of-use assets	64,357	63,492
Restricted cash	5,031	5,031
Long-term deposit and other assets	1,766	1,647
Total assets	371,118	272,149
Current liabilities:
Accounts payable	4,278	2,374
Accrued expenses and other current liabilities	15,410	10,716
Operating lease liability, current portion	4,570	3,246
Deferred revenue, current portion	11,698	10,137
Current portion of long-term debt		3,347
Total current liabilities	35,956	29,820
Deferred revenue, net of current portion	1,246	5,622
Operating lease liability, net of current portion	60,739	59,140
Long-term debt and accrued interest	32,072	26,700
Other long term liabilities	135
Total liabilities	130,148	121,282
Commitments and contingencies (Note 10)
Stockholders' equity (deficit):
Preferred Stock, $0.0001 par value; 10,000,000 shares authorized; no shares issued and outstanding at December 31, 2024 and 2023	0	0
Additional paid-in capital	616,009	398,459
Accumulated other comprehensive income	51
Accumulated deficit	(375,096)	(247,597)
Total stockholders' equity	240,970	150,867	$ 99,434
Total liabilities and stockholders' equity	371,118	272,149
Voting Common Stock
Stockholders' equity (deficit):
Common stock	5	4
Non-voting Common Stock
Stockholders' equity (deficit):
Common stock	$ 1	$ 1