Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 21,035	$ 24,127
Marketable debt securities	65,575	60,243
Prepaid expenses and other current assets	8,006	1,776
Total current assets	94,616	86,146
Restricted cash, non-current	745	745
Marketable debt securities, non-current	2,893	17,886
Property and equipment, net	1,521	1,592
Operating lease right-of-use asset	6,044	6,277
Other assets	586	644
Total assets	106,405	113,290
Current liabilities:
Accounts payable	4,081	1,586
Accrued expenses	1,396	3,237
Operating lease liability	933	917
Total current liabilities	6,410	5,740
Operating lease liability, non-current	5,227	5,467
Total liabilities	11,637	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 March 31, 2023 and December 31, 2022, 8,027 shares issued and outstanding as of March 31, 2023 and December 31, 2022.
Common stock, $0.001 par value, authorized 100,000,000 shares: Common stock, 11,306,753 and 11,267,389 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively.	11	11
Additional paid-in capital	264,235	262,724
Accumulated deficit	(169,009)	(159,964)
Accumulated other comprehensive income (loss)	(469)	(688)
Total stockholders’ equity	94,768	102,083
Total liabilities and stockholders’ equity	$ 106,405	$ 113,290