Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash , cash equivalents and marketable securities	$ 91,152	$ 166,150
Marketable securities, current	66,282	0
Restricted cash	1,768	3,563
Prepaid expenses and other current assets	4,425	3,015
Total current assets	163,627	172,728
Property and equipment, net	24,704	15,665
Operating lease right-of-use assets	24,837	27,150
Restricted cash, net of current portion	3,406	3,406
Marketable securities, non-current	30,342	0
Other non-current assets	2,672	2,714
Total assets	249,588	221,663
Current liabilities:
Accounts payable	5,689	7,280
Accrued expenses and other current liabilities	6,178	10,212
Operating lease liabilities, current portion	457	1,991
Total current liabilities	12,324	19,483
Operating lease liabilities, net of current portion	38,004	31,216
Other non-current liabilities	1,183	1,053
Total liabilities	51,511	51,752
Commitments and contingencies (Note 12)
Stockholders' equity
Preferred stock, $0.001 par value; 10,000,000 shares authorized at June 30, 2024 and December 31, 2023; no shares issued and outstanding at June 30, 2024 and December 31, 2023	0	0
Common stock, $0.001 par value; 200,000,000 shares authorized at June 30, 2024 and December 31, 2023; 9,279,937 shares and 8,016,516 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	9	8
Additional paid-in capital	422,435	352,908
Accumulated other comprehensive income	21	0
Accumulated deficit	(224,388)	(183,005)
Total stockholders' equity	198,077	169,911
Total liabilities and stockholders' equity	$ 249,588	$ 221,663

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).