Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 46,928,000	$ 69,724,000
Short term investments	47,736,000	37,078,000
Prepaid expenses and other current assets	4,706,000	4,871,000
Total current assets	99,370,000	111,673,000
Property and equipment, net	364,000	263,000
Operating lease right-of-use assets, net	328,000	1,165,000
Long term investments	11,029,000	19,933,000
Goodwill	825,000	0
Intangible asset	5,900,000	0
Other assets	47,000	194,000
Total assets	117,863,000	133,228,000
Current liabilities:
Accounts payable	1,867,000	4,911,000
Accrued expenses and other current liabilities	4,083,000	9,311,000
Total current liabilities	5,950,000	14,222,000
Long-term financing lease liabilities	38,000	0
Long-term operating lease liabilities	95,000	420,000
Deferred tax liabilities	248,000	0
Total liabilities	6,331,000	14,642,000
Stockholders’ equity:
Preferred stock, $0.001 par value, 10,000,000 authorized, no shares issued and outstanding as of June 30, 2022 and December 31, 2021	0	0
Common stock, $0.001 par value, 100,000,000 shares authorized, 35,977,688 and 30,074,412 issued and outstanding as of June 30, 2022 and December 31, 2021, respectively	36,000	30,000
Additional paid in capital	386,766,000	355,234,000
Accumulated other comprehensive loss	(466,000)	(79,000)
Accumulated deficit	(274,804,000)	(236,599,000)
Total stockholders’ equity	111,532,000	118,586,000
Total liabilities and stockholders’ equity	$ 117,863,000	$ 133,228,000