CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 39,266	$ 33,986
Short-term investments	43,387	141,040
Assets Held For Sale	260	0
Prepaid expenses and other current assets	1,001	5,989
Total current assets	83,914	181,015
Equity method investment	0	25,814
Property and equipment, net	0	1,078
Right-of-use assets	650	20,563
Total assets	84,564	228,470
Current liabilities:
Accounts payable	3,234	1,144
Accrued expenses and other liabilities	7,021	18,715
Operating Lease Liabilities	1,318	1,561
Deferred revenue	0	1,156
Total current liabilities	11,573	22,576
Non-current liabilities:
Operating lease liabilities, net of current portion	0	27,916
Total liabilities	11,573	50,492
Commitments and contingencies (Note 10)
Stockholders’ equity:
Preferred stock, $0.0001 par value, 10,000,000 shares authorized; no shares issued and outstanding at December 31, 2023 and 2022	0	0
Common stock, $0.0001 par value; 200,000,000 shares authorized; 58,017,412 and 57,483,910 shares issued and outstanding as of December 31, 2023 and 2022, respectively	6	6
Additional paid-in capital	615,088	607,513
Accumulated other comprehensive gain	(5)	(404)
Accumulated deficit	(542,098)	(429,137)
Total stockholders’ equity	72,991	177,978
Total liabilities and stockholders' equity	$ 84,564	$ 228,470