Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 52,231	$ 39,586
Marketable debt securities	2,992	25,994
Prepaid expenses and other current assets	2,690	3,125
Total current assets	57,913	68,705
Restricted cash, non-current	745	745
Property and equipment, net	1,213	1,296
Operating lease right-of-use asset	5,018	5,264
Other assets	3,245	2,944
Total assets	68,134	78,954
Current liabilities:
Accounts payable	972	2,434
Accrued expenses and other current liabilities	3,529	2,732
Operating lease liability	1,000	983
Total current liabilities	5,501	6,149
Operating lease liability, non-current	4,227	4,484
Total liabilities	9,728	10,633
Commitments and contingencies (Note 9)
Stockholders’ Equity:
Preferred stock, $0.001 par value, authorized 10,000,000 shares: Series 1 Convertible Preferred Stock, 8,028 shares authorized at March 31, 2024 and December 31, 2023, 7,991 shares issued and outstanding as of March 31, 2024 and December 31, 2023.
Common stock, $0.001 par value, authorized 100,000,000 shares: Common stock, 11,433,837 and 11,364,903 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively.	11	11
Additional paid-in capital	269,875	268,725
Accumulated deficit	(211,479)	(200,384)
Accumulated other comprehensive income (loss)	(1)	(31)
Total stockholders’ equity	58,406	68,321
Total liabilities and stockholders’ equity	$ 68,134	$ 78,954