STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net loss	$ (41,314)	$ (47,173)	$ (16,819)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Change in fair value of warrant liability	(18,122)	22,870	(27,632)
Share-based compensation	10,245	6,801	6,562
Impairment of intangible assets		227
Depreciation and amortization	285	109	80
Changes in operating assets and liabilities:
Receivable for foreign tax withholding	20,420	(20,420)
Unbilled receivables	(4,724)	(2,347)	(199)
Prepaid expenses and other current assets	(1,073)	(812)	(650)
Accounts payable	3,918	(2,350)	1,144
Accrued liabilities	2,312	1,470	1,105
Deferred revenue	(4,435)	75,883	6,986
Operating lease liability	524
Net cash provided by (used in) operating activities	(31,964)	34,258	(29,423)
Cash flows from investing activities:
Purchases of property and equipment	(708)	(894)	(217)
Purchases of short-term investments	(420,153)	(190,279)	(64,655)
Proceeds from maturity of short-term investments	445,569	84,879	89,190
Net cash (used in) provided by investing activities	24,708	(106,294)	24,318
Cash flows from financing activities:
Proceeds from exercise of stock options	332	272	372
Issuance of common stock, net	3,136	69,231	220
Collection of common stock proceeds receivable		5,274
Proceeds from exercise of warrants			1,118
Payment of RSU tax withholdings in exchange for common shares surrendered by RSU holders			(324)
Net cash provided by financing activities	3,468	74,777	1,386
Net increase (decrease) in cash and cash equivalents	(3,788)	2,741	(3,719)
Cash and cash equivalents at beginning of the year	12,331	9,590	13,309
Cash and cash equivalents at end of the year	8,543	12,331	9,590
Supplemental cash flow information:
Income taxes paid	(8)	(1)	(1)
Operating Lease right-of-use asset obtained in exchange for operating lease liability	8,689	$ 0	0
Non-cash financing activities:
Warrants issued pursuant to cashless exercise	$ 6
Proceeds receivable- sale of common stock			5,224
Proceeds receivable- stock option exercises			50
Change in fair value of warrants exercised			$ 1,068