CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 19,519	$ 26,630
Marketable securities	98,687	133,281
Prepaid expenses and other current assets	4,478	4,072
Total current assets	122,684	163,983
Property and equipment, net	9,844	11,897
Right of use assets	4,557	5,016
Other assets	2,854	3,265
Total assets	139,939	184,161
Current liabilities:
Accounts payable	2,602	4,270
Accrued liabilities and other liabilities	3,950	4,857
Total current liabilities	6,552	9,127
Lease liabilities, long term	6,120	6,605
Other long-term liabilities	815	899
Total liabilities	13,487	16,631
Stockholders' equity
Preferred stock; par value of $0.001 per share; 10,000,000 shares authorized at September 30, 2023 and December 31, 2022, No shares issued and outstanding at September 30, 2023 and December 31, 2022
Common stock, par value of $0.001 per share; 100,000,000 shares authorized at September 30, 2023 and December 31, 2022. 27,839,968 and 27,774,536 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively	28	28
Additional paid-in capital	437,042	430,755
Accumulated other comprehensive loss	(603)	(1,494)
Accumulated deficit	(310,015)	(261,759)
Total stockholders' equity	126,452	167,530
Total liabilities and stockholders' equity	$ 139,939	$ 184,161