Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Schedule of Warrants (Detail)

v3.21.2
Stockholders' Equity - Schedule of Warrants (Detail) - Warrant [Member] - $ / shares
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Balance – June 30, 2019 10,309,000 1,543,000
Underwritten public offering   10,418,000
Issuance of 2020 Underwriter Warrants   377,000
Exercise of PFW   (2,655,000)
Issuance of Adgero Warrants 2,314,000  
Exercise of 2020 Investor Warrants   (25,000)
Warrants issued for services [1] 600,000 655,000
Expiry of warrants issued for services [1]   (4,000)
Balance – June 30, 2020 6,974,000 10,309,000
Exercise of warrants [2] (4,907,000)  
Expiry of warrants (1,342,000)  
Beginning balance $ 2.71 $ 12.60
Underwritten public offering   0.75
Issuance of 2020 Underwriter Warrants   1.15
Exercise of PFW   0.01
Issuance of Adgero Warrants 3.18  
Stock option exercise price 1.00 [2] 1.00
Warrants issued for services [1] 1.74 0.77
Expired 6.00  
Expiry of warrants issued for services [1]   59.30
Ending balance $ 3.34 $ 2.71
[1] Warrants issued for services are exercisable at various prices and expire at the various dates noted in the table below.
[2] A total of 4,404 2020 Investor Warrants were exercised at $1.00 per share and 503 warrants issued as either agent warrants or issued for services were exercised on a cashless basis for which 273 common shares were issued.