Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 33,768	$ 24,127
Marketable debt securities	40,266	60,243
Prepaid expenses and other current assets	3,779	1,776
Total current assets	77,813	86,146
Restricted cash, non-current	745	745
Marketable debt securities, non-current		17,886
Property and equipment, net	1,401	1,592
Operating lease right-of-use asset	5,567	6,277
Other assets	2,941	644
Total assets	88,467	113,290
Current liabilities:
Accounts payable	2,504	1,586
Accrued expenses	3,305	3,237
Operating lease liability	966	917
Total current liabilities	6,775	5,740
Operating lease liability, non-current	4,736	5,467
Total liabilities	11,511	11,207
Commitments and contingencies (Note 8)
Stockholders’ Equity:
Preferred stock, $0.001 par value, authorized 10,000,000 shares: Series 1 Convertible Preferred Stock, 8,028 shares authorized at September 30, 2023 and December 31, 2022, 7,991 and 8,027 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively.
Common stock, $0.001 par value, authorized 100,000,000 shares: Common stock, 11,364,903 and 11,267,389 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively.	11	11
Additional paid-in capital	267,273	262,724
Accumulated deficit	(190,163)	(159,964)
Accumulated other comprehensive income (loss)	(165)	(688)
Total stockholders’ equity	76,956	102,083
Total liabilities and stockholders’ equity	$ 88,467	$ 113,290