Annual report pursuant to Section 13 and 15(d)

Stockholders' equity (Tables)

v3.23.3
Stockholders' equity (Tables)
12 Months Ended
Jun. 30, 2023
Equity [Abstract]  
Schedule of warrants or rights
The activity related to warrants during for the fiscal years ended June 30, 2023 and 2022, is summarized as follows:
 
    
Common
Stock from
Warrants
    
Weighted
Average
Exercise
Price (per
share)
 
Outstanding at July 1, 2022
     6,300      $ 178.50  
Pre-funded warrants issued September 15, 2022
     715,979      $ 0.0017  
Series 2 warrants issued September 16, 2022
     1,753,503      $ 11.22  
Pre-funded warrants exercised
     127,743      $ 0.0017  
 
 
 
 
 
 
 
 
 
Outstanding at June 30, 2023
     2,348,039      $ 8.86  
 
 
 
 
 
 
 
 
 
Exercisable at June 30, 2023
     2,348,039      $ 8.86  
Schedule of equity awards
The activity related equity awards, which are comprised of stock options, during the fiscal years ended June 30, 2023 and 2022, respectively, is summarized as follows:
 
    
Stock

Options
    
Weighted

Average Exercise
Price
    
Weighted
Average
Remaining
Contractual

Term
    
Aggregate
Intrinsic

Value
 
Outstanding at July 1, 2021
     41,298      $ 121.72        8.07 years           
Granted
     2,118        50.83        9.45 years           
    
 
 
    
 
 
    
 
 
          
Outstanding at June 30, 2022
     43,416      $ 118.15        7.18 years           
Granted
     66,868        3.88        9.94 years           
Expired
     (2,291      848.12        —             
    
 
 
    
 
 
    
 
 
          
Outstanding at June 30, 2023
     107,993      $ 31.88        8.96 years      $ 11,888  
Exercisable at June 30, 2023
     27,135      $ 88.79        7.22 years           
Schedule of share-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,
 
    
2023
   
2022
 
Expected volatility
     115.6     122.1
Expected term
     6 years       6 years  
Risk-free interest rate
     3.96     1.36
Expected dividend yield
     —       —  
Schedule of equity-based compensation expense
The classification of share-based compensation expense for the years ended:
 
(US$’000)
  
June 30,
 
    
2023
    
2022
 
Research and development
   $ 161      $ 257  
General and administrative
     291        613  
    
 
 
    
 
 
 
Total share-based compensation expense
   $ 452      $ 870