Annual report pursuant to Section 13 and 15(d)

Stockholders' equity (Tables)

v3.22.2.2
Stockholders' equity (Tables)
12 Months Ended
Jun. 30, 2022
Equity [Abstract]  
Schedule of warrants or rights
The activity related to warrants during for the fiscal years ended June 30, 2022 and 2021, is summarized as follows:
 
    
Common
Stock
from
Warrants
    
Weighted-
average
Exercise
Price (per
share)
 
Outstanding and exercisable at July 1, 2020
     145,424        29.48  
    
 
 
          
Granted
     559,162        3.09  
    
 
 
          
Exercised
     (559,162      3.10  
Forfeited
     (38,329      82.50  
    
 
 
          
Outstanding and exercisable at June 30, 2021
     107,095      $ 10.50  
    
 
 
          
Outstanding and exercisable at June 30, 2022
     107,095      $ 10.50  
Schedule of equity awards
The activity related to equity awards, which comprised of stock options during the fiscal years ended June 30, 2022 and 2021, respectively, is summarized as follows:
 
    
Stock
Options
    
Weighted-
average
Exercise
Price
    
Weighted-
average
Remaining
Contractual
Term
    
Aggregate
Intrinsic
Value
 
Outstanding at July 1, 2020
     70,154        60.42        2.89 years        —    
Exercisable at July 1, 2020
     41,829        69.81        2.59 years        —    
Granted
     640,320        3.29                    
Forfeited
     (8,410      153.79                    
    
 
 
                            
Outstanding at June 30, 2021
     702,064        7.16        8.07 years        —    
    
 
 
                            
Exercisable at June 30, 2021
     54,158      $ 47.90        2.09 years      $ —    
    
 
 
    
 
 
    
 
 
    
 
 
 
Granted
     36,000        2.99        9.45 years      $ —    
Outstanding at June 30, 2022
     738,064        6.95        7.18 years      $ —    
    
 
 
    
 
 
    
 
 
    
 
 
 
Exercisable at June 30, 2022
     275,174        13.16        6.19 years      $ —    
    
 
 
    
 
 
    
 
 
    
 
 
 
 
Schedule of equity-based compensation expense
The Company estimated the fair value of each employee equity award on the grant date using the Black-Scholes option- pricing model with the following assumptions:
 
    
Fiscal Year Ended
June 30,
 
    
2022
   
2021
 
Expected volatility
     122.1    
112.0-127.4
Expected term
     6 years       3.5-6 years  
Risk-free interest rate
     1.36     0.44-0.55
Expected dividend yield
     —       —  
Schedule of share-basedcompensation expense
The classification of share-based compensation expense for the years ended:
 
(US$’000)
  
June 30,
 
    
2022
    
2021
 
Research and development
   $ 257      $ 212  
General and administrative
     613        422  
    
 
 
    
 
 
 
Total share-based compensation expense
   $ 870      $ 634