Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 21,136	$ 26,301
Marketable securities	21,860	26,774
Prepaid expenses and other current assets	2,925	2,865
Total current assets	45,921	55,940
Long-term equity investments	20,908	20,974
Restricted cash	1,931	1,931
Right-of-use asset, net	12,509	12,797
Property and equipment, net	346	433
Other noncurrent assets	39	92
Total assets	81,654	92,167
Current liabilities:
Accounts payable	1,950	3,191
Accrued expenses	5,997	5,994
Current portion, lease liability	1,360	1,336
Total current liabilities	9,307	10,522
Long-term liabilities:
Lease liability	13,070	13,419
Total liabilities	22,377	23,941
Stockholders’ equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; Series A convertible preferred stock, 10,000 shares designated, 1,250 shares issued and outstanding at March 31, 2025 and December 31, 2024	0	0
Common stock, $0.001 par value; 125,000,000 shares authorized; 71,109,514 and 71,009,866 shares issued and outstanding at March 31, 2025 and December 31, 2024, respectively	71	71
Additional paid-in-capital	373,786	372,489
Accumulated other comprehensive income	(47)	(35)
Accumulated deficit	(314,533)	(304,299)
Total stockholders’ equity	59,276	68,226
Total liabilities and stockholders’ equity	$ 81,654	$ 92,167