Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2022	Apr. 30, 2021
Current assets:
Cash and cash equivalents	$ 30,732	$ 50,592
Marketable securities	135,470	198,337
Research and development tax credit receivable	14,098	10,418
Prepaid expenses and other current assets	13,347	4,917
Total current assets	193,647	264,264
Property and equipment, net	2,178	1,791
Right of use assets	7,862	5,758
Other assets	193	200
Total assets	203,880	272,013
Current liabilities:
Accounts payable	3,638	1,981
Accrued expenses	6,961	6,930
Lease liability - current portion	977	863
Total current liabilities	11,576	9,774
Long-term liabilities:
Lease liability - net of current portion	7,211	5,046
Total long-term liabilities	7,211	5,046
Commitments and contingencies (Note 9)
Stockholders’ equity
Common stock, $0.001 par value, 100,000,000 authorized Shares issued and outstanding: 24,550,748 and 24,422,531 at April 30, 2022 and 2021, respectively	25	24
Additional paid-in capital	439,104	426,437
Accumulated deficit	(250,175)	(167,836)
Accumulated other comprehensive loss	(3,861)	(1,432)
Total stockholders’ equity	185,093	257,193
Total liabilities and stockholders’ equity	$ 203,880	$ 272,013