Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2021	Apr. 30, 2020
Current assets:
Cash and cash equivalents	$ 50,592	$ 15,789
Marketable securities	198,337	51,925
Research and development tax credit receivable	10,418	16,527
Prepaid expenses and other current assets	4,917	4,455
Total current assets	264,264	88,696
Property and equipment, net	1,791	2,043
Right of use assets	5,758	1,612
Other assets	200	178
Total assets	272,013	92,529
Current liabilities:
Accounts payable	1,981	1,677
Accrued expenses	6,930	5,455
Lease liability - current portion	863	588
Total current liabilities	9,774	7,720
Long-term liabilities:
Lease liability - net of current portion	5,046	1,057
Total long-term liabilities	5,046	1,057
Commitments and contingencies (Note 8)
Stockholders’ equity:
Common stock, $0.001 par value, 100,000,000 authorized Shares issued and outstanding: 24,422,531 and 17,845,599 at April 30, 2021 and 2020, respectively	24	18
Additional paid-in capital	426,437	207,208
Accumulated deficit	(167,836)	(121,592)
Accumulated other comprehensive loss	(1,432)	(1,882)
Total stockholders’ equity	257,193	83,752
Total liabilities and stockholders’ equity	$ 272,013	$ 92,529