Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 216,678	$ 279,401
Marketable securities	86,805
Prepaid expenses and other current assets	7,195	11,212
Total current assets	310,678	290,613
Property and equipment, net	14,018	5,586
Operating lease right-of-use assets	18,082	19,359
Restricted cash	1,631	1,631
Other assets	25	22
Total assets	344,434	317,211
Current liabilities:
Accounts payable (includes related party amounts of $0 and $141, respectively)	7,461	4,744
Accrued expenses (includes related party amounts of $33 and $140, respectively)	18,553	8,210
Accrued interest	134	55
Current portion of operating lease liability	3,118	37
Total current liabilities	29,266	13,046
Operating lease liability, net of current portion	22,831	21,569
Long-term debt, net of debt discount	25,244	14,792
Other long-term liabilities	1,568	575
Total liabilities	78,909	49,982
Commitments and contingencies (Note 8)
Stockholders' equity:
Preferred stock, $0.0001 par value; authorized shares - 50,000,000 at December 31, 2023 and December 31, 2022; no shares issued and outstanding at December 31, 2023 and December 31, 2022
Common stock, $0.0001 par value; authorized shares - 500,000,000 at December 31, 2023 and December 31, 2022; issued shares - 48,497,853 and 39,240,746 at December 31, 2023 and December 31, 2022, respectively; outstanding shares - 47,666,438 and 37,656,037 at December 31, 2023 and December 31, 2022, respectively	5	4
Additional paid-in capital	654,986	532,499
Accumulated other comprehensive loss	(907)	(281)
Accumulated deficit	(388,559)	(264,993)
Total stockholders' equity	265,525	267,229
Total liabilities and stockholders' equity	$ 344,434	$ 317,211