Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 26,301	$ 27,042
Marketable securities	26,774	78,792
Prepaid expenses and other current assets	2,865	3,763
Total current assets	55,940	109,598
Long-term equity investments	20,974	17,626
Restricted cash	1,931	1,931
Right-of-use asset, net	12,797	13,894
Property and equipment, net	433	769
Other assets	92	210
Total assets	92,167	144,027
Current liabilities:
Accounts payable	3,191	3,703
Accrued expenses	5,994	6,524
Current portion, lease liability	1,336	1,246
Total current liabilities	10,522	11,473
Long-term liabilities:
Lease liability	13,419	14,756
Royalty monetization liability	0	30,000
Total liabilities	23,941	56,230
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 December 31, 2024 and 2023	0	0
Common stock, $0.001 par value; 125,000,000 shares authorized; 71,009,866 and 70,691,992 shares issued and outstanding at December 31, 2024 and 2023, respectively	71	71
Additional paid-in-capital	372,489	365,591
Accumulated other comprehensive income (loss)	(35)	1
Accumulated deficit	(304,299)	(277,865)
Total stockholders’ equity	68,226	87,797
Total liabilities and stockholders’ equity	$ 92,167	$ 144,027