CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 8,721	$ 7,159
Marketable securities	127,503	140,462
Prepaid expenses	2,554	547
Other current assets	199	374
Total current assets	138,977	148,542
Right of use assets - operating leases, net	6,267
Right of use assets - financing leases, net	2,551
Property and equipment, net	2,204	4,644
Other non-current assets	39	39
Total assets	150,038	153,225
Current liabilities:
Accounts payable and accrued liabilities	5,100	2,456
Compensation and employee benefits liabilities	560	1,753
Operating lease liabilities, current	1,160
Financing lease liabilities, current	786	680
Total current liabilities	7,606	4,889
Operating lease liabilities, non-current	5,278
Financing lease liabilities, non-current	1,846	1,674
Other non-current liabilities		149
Total liabilities	14,730	6,712
Commitments and contingencies (Note 7)
Stockholders' equity:
Common stock, $0.0001 par value and 250,000,000 shares authorized as of March 31, 2022 and December 31, 2021; 30,682,813 and 30,609,029 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	3	3
Additional paid-in capital	297,815	296,049
Accumulated deficit	(161,611)	(149,206)
Accumulated other comprehensive loss	(899)	(333)
Total stockholders' equity	135,308	146,513
Total liabilities and stockholders' equity	$ 150,038	$ 153,225