Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 53,849	$ 149,063
Marketable securities	68,282
Restricted cash and deposits	28	23
Prepaid expenses and other current assets	5,510	4,618
Total current assets	127,669	153,704
Restricted cash and deposits, net of current portion	893	125
Right of use assets - operating lease	656	950
Property and equipment, net	5,803	5,251
Total Assets	135,021	160,030
Current liabilities:
Accounts payable	1,198	2,401
Short-term operating lease liability	633	615
Accrued expenses and other current liabilities	3,981	4,256
Total current liabilities	5,812	7,272
Long-term operating lease liability	51	360
Warrant liability	67	83
Total Liabilities	5,930	7,715
Commitments and Contingencies (Note 12)
Stockholders Equity:
Common stock, $0.00001 par value, 150,000,000 authorized at June 30, 2022 and December 31, 2021, and 29,266,848 and 29,211,643 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively
Additional paid-in capital	307,659	304,452
Accumulated deficit	(178,440)	(152,137)
Accumulated other comprehensive loss	(128)
Total Stockholders' Equity	129,091	152,315
Total Liabilities and Stockholders Equity	$ 135,021	$ 160,030