CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Assets, Current [Abstract]
Cash and cash equivalents	$ 80,861	$ 105,679
Marketable securities	462,404	481,696
Restricted cash, current	208	208
Prepaid expenses and other current assets	10,681	11,727
Total current assets	554,154	599,310
Restricted cash, non-current	2,418	2,418
Marketable securities non current	21,942	38,277
Property and equipment, net	45,568	46,456
Operating lease right-of-use assets	23,603	23,789
Prepaid research and development expenses and other long-term assets	397	1,077
Total assets	648,082	711,327
Current liabilities:
Accounts payable	4,369	2,095
Accrued liabilities	43,359	56,716
Operating lease liabilities, current portion	7,361	7,308
Finance lease liabilities, current portion	0	230
Contract liability to related party	57,372	59,056
Total current liabilities	112,461	125,405
Operating lease liabilities, net of current portion	45,831	46,542
Contract liability to related party, net of current portion	69,447	75,995
Other non-current liabilities	3,437	8,593
Total liabilities	231,176	256,535
Commitments and contingencies (Note 7)
Stockholders' equity
Common stock, par value of $0.001 per share; 1,000,000,000 shares authorized and 55,066,903 shares issued and outstanding as of March 31, 2025; 1,000,000,000 shares authorized and 54,293,597 shares issued and outstanding as of December 31, 2024	54	53
Additional paid-in capital	975,301	950,719
Accumulated other comprehensive income	649	848
Accumulated Deficit	(559,098)	(496,828)
Total stockholders' equity	416,906	454,792
Total liabilities and stockholders' equity	$ 648,082	$ 711,327

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).