Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 84,797	$ 100,752
Investments	15,442	23,173
Prepaid expenses and other current assets	2,525	5,185
Total current assets	102,764	129,110
Property and equipment, net	35,714	23,233
Right-of-use asset	39,673	45,218
Restricted cash	3,437	3,437
Other assets	952	589
Total assets	182,540	201,587
Current liabilities:
Accounts payable	7,157	13,009
Accrued expenses and other current liabilities	6,559	6,281
Lease liability - current portion	2,300	1,684
Total current liabilities	16,016	20,974
Term loan, non-current	19,078	0
Lease liability - net of current portion	49,269	50,388
Other long- term liabilities	169	203
Total liabilities	84,532	71,565
Stockholders’ equity:
Preferred stock, $0.0001 par value; authorized - 10,000 shares at June 30, 2022 and December 31, 2021; issued and outstanding - no shares at June 30, 2022 and December 31, 2021	0	0
Common stock, $0.0001 par value; authorized - 100,000 shares at June 30, 2022 and December 31, 2021; issued and outstanding - 25,972 and 25,848 shares at June 30, 2022 and December 31, 2021, respectively	3	3
Additional paid-in capital	329,504	324,620
Accumulated other comprehensive loss	(41)	(14)
Accumulated deficit	(231,458)	(194,587)
Total stockholders’ equity	98,008	130,022
Total liabilities and stockholders’ equity	$ 182,540	$ 201,587