Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 31, 2020	Apr. 30, 2020
Current assets:
Cash and cash equivalents	$ 16,174	$ 15,789
Marketable securities	39,700	51,925
Research and development tax credit receivable	14,685	16,527
Prepaid expenses and other current assets	1,517	4,455
Total current assets	72,076	88,696
Property and equipment, net	1,889	2,043
Right of use assets	1,305	1,612
Other assets	178	178
Total assets	75,448	92,529
Current liabilities:
Accounts payable	2,173	1,677
Accrued expenses	6,941	5,455
Lease liability - current portion	422	588
Total current liabilities	9,536	7,720
Long-term liabilities:
Lease liability - net of current portion	932	1,057
Total long-term liabilities	932	1,057
Commitments and contingencies (Note 5)
Stockholders’ equity
Common stock, $0.001 par value, 100,000,000 authorized Shares issued and outstanding: 17,915,515 at October 31, 2020 and 17,845,599 at April 30, 2020	18	18
Additional paid-in capital	209,750	207,208
Accumulated deficit	(142,832)	(121,592)
Accumulated other comprehensive loss	(1,956)	(1,882)
Total stockholders’ equity	64,980	83,752
Total liabilities and stockholders’ equity	$ 75,448	$ 92,529