CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 12,557	$ 9,994
Marketable securities	16,071	31,341
Prepaid expenses	828	474
Other current assets	116	120
Total current assets	29,572	41,929
Right of use assets - operating leases, net	2,034	2,804
Right of use assets - financing leases, net	10	163
Property and equipment, net	143	417
Other non-current assets	24	48
Total assets	31,783	45,361
Current liabilities:
Accounts payable and accrued liabilities	1,135	1,248
Compensation and employee benefits liabilities	775	1,882
Operating lease liabilities, current	1,622	1,586
Financing lease liabilities, current	341	732
Total current liabilities	3,873	5,448
Operating lease liabilities, non-current	592	1,429
Financing lease liabilities, non-current	4	98
Total liabilities	4,469	6,975
Commitments and contingencies (Note 6)
Stockholders' equity:
Preferred stock, $0.0001 par value and 10,000,000 shares authorized as of June 30, 2025 and December 31, 2024; zero shares issued and outstanding at June 30, 2025 and December 31, 2024, respectively
Common stock, $0.0001 par value and 12,500,000 shares authorized as of June 30, 2025 and December 31, 2024; 1,261,290 and 1,258,940 shares issued and outstanding at June 30, 2025 and December 31, 2024, respectively	0	0
Additional paid-in capital	301,177	300,451
Accumulated deficit	(273,852)	(262,052)
Accumulated other comprehensive loss	(11)	(13)
Total stockholders' equity	27,314	38,386
Total liabilities and stockholders' equity	$ 31,783	$ 45,361