Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 61,765	$ 51,579
Marketable securities	213,060	200,641
Prepaid expenses and other assets	14,583	12,125
Total current assets:	289,408	264,345
Property and equipment, net	703	762
Operating lease right-of-use assets	9,918	11,509
Restricted cash	975	975
Other long-term assets	96	102
Total assets	301,100	277,693
Current liabilities
Accounts payable	2,286	5,756
Accrued expenses	9,006	15,508
Current portion of operating lease liabilities	1,011	1,001
Total current liabilities	12,303	22,265
Operating lease liabilities, net of current portion	10,025	11,505
Total liabilities	22,328	33,770
Commitments and contingencies (Note 5)
Stockholders' equity:
Common stock, $0.0001 par value; 900,000,000 shares authorized at September 30, 2024 and December 31, 2023; 70,669,131 shares issued and outstanding at September 30, 2024; 59,252,349 and 59,239,113 shares issued and outstanding, respectively, at December 31, 2023	7	6
Additional paid-in capital	802,850	663,154
Accumulated other comprehensive loss	873	(50)
Accumulated deficit	(524,958)	(419,187)
Total stockholders' equity	278,772	243,923
Total liabilities and stockholders' equity	301,100	277,693
Series A Non-Voting Convertible Preferred Stock
Stockholders' equity:
Series A non-voting convertible preferred stock, $0.0001 par value; 100,000,000 shares authorized at September 30, 2024 and December 31, 2023; 70,601 and 0 shares issued and outstanding at September 30, 2024 and December 31, 2023, respectively	$ 0	$ 0

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).