Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 62,293	$ 200,695
Investment securities	346,213	133,012
Prepaid expenses and other current assets	7,779	11,013
Total current assets	416,285	344,720
Property and equipment, net	3,152	2,825
Operating lease right-of-use asset	1,697	1,892
Derivative asset	99	68
Investment in Radionetics	0	1,010
Restricted cash	500	500
Total assets	421,733	351,015
Current liabilities:
Accounts payable and accrued expenses	17,132	8,468
Accrued compensation and related expenses	5,447	6,588
Deferred revenue	2,543	0
Other current liabilities	993	939
Total current liabilities	26,115	15,995
Operating lease liability, non-current	2,565	3,074
Deferred revenue, non-current	6,888	0
Unvested stock liability	0	2
Total liabilities	35,568	19,071
Commitments and contingencies (Note 7)
Stockholders’ equity:
Preferred stock, $0.001 par; 10,000 shares authorized; no shares issued or outstanding at June 30, 2022 or at December 31, 2021	0	0
Common stock and paid-in capital, $0.001 par; 200,000 shares authorized; 53,720 shares issued and outstanding at June 30, 2022; 47,598 shares issued and 47,597 shares outstanding at December 31, 2021	742,041	607,581
Accumulated other comprehensive income	(3,619)	(382)
Accumulated deficit	(352,257)	(275,255)
Total stockholders’ equity	386,165	331,944
Total liabilities and stockholders’ equity	$ 421,733	$ 351,015