Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jan. 31, 2024	Apr. 30, 2023
Current assets:
Cash and cash equivalents	$ 23,056	$ 56,238
Marketable securities	52,530	93,137
Research and development tax credit receivable	23,011	16,568
Prepaid expenses and other current assets	5,506	6,383
Total current assets	104,103	172,326
Property and equipment, net	2,423	2,948
Right of use assets	7,045	7,822
Other assets	397	106
Total assets	113,968	183,202
Current liabilities:
Accounts payable	3,101	4,817
Accrued expenses	14,840	9,128
Lease liability - current portion	1,187	1,087
Total current liabilities	19,128	15,032
Long-term liabilities:
Lease liability - net of current portion	6,257	7,145
Total long-term liabilities	6,257	7,145
Commitments and contingencies (Note 6)
Stockholders’ equity
Common stock, $0.001 par value, 100,000,000 authorized Shares issued and outstanding: 34,595,623 at January 31, 2024 and 34,171,138 at April 30, 2023	34	34
Additional paid-in capital	516,920	507,133
Accumulated deficit	(425,077)	(343,082)
Accumulated other comprehensive loss	(3,294)	(3,060)
Total stockholders’ equity	88,583	161,025
Total liabilities and stockholders’ equity	$ 113,968	$ 183,202