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Earnings Per Share (Tables)
 12 Months Ended
Jun. 30, 2023
Statement [LineItems]  
Summary of Earnings Per Share
                      
                      
                      
 
  
Consolidated
 
 
  
June 30, 2023
A$
 
  
June 30, 2022
A$
 
  
June 30, 2021
A$
 
Loss after income tax attributable to the owners of Immutep Limited
   
 
(39,896,348
) 
   
 
(32,210,826
) 
   
 
(29,902,624
) 
    
 
 
     
 
 
     
 
 
  
 
                                                                                        
    
Number
     
Number
     
Number
  
Weighted average number of ordinary shares used in calculating basic earnings per share (EPS)
   
 
892,399,810
 
   
 
848,968,068
 
   
 
594,927,440
 
    
 
 
     
 
 
     
 
 
  
Weighted average number of ordinary shares used in calculating diluted earnings per share (EPS)
   
 
892,399,810
 
   
 
848,968,068
 
   
 
594,927,440
 
    
 
 
     
 
 
     
 
 
  
 
     
                      
      
                      
      
                      
  
    
Cents
     
Cents
     
Cents
  
Basic earnings per share
   
 
(4.47
) 
   
 
(3.79
) 
   
 
(5.03
) 
Diluted earnings per share
   
 
(4.47
) 
   
 
(3.79
) 
   
 
(5.03
) 
Summary of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following table summarizes the convertible notes, performance rights, listed options and unlisted options that were not included in the calculation of weighted average number of ordinary shares because they are anti-dilutive for the periods presented.
 
    
Consolidated
  
    
June 30, 2023
A$
     
June 30, 2022
A$
     
June 30, 2021
A$
  
Unlisted options
      847,600        847,600        847,600  
Convertible notes
      6,646,432        12,206,768        23,806,883  
Non-executive
director performance rights
      1,937,065        1,339,621        3,100,000  
Performance rights
      12,130,033        16,769,906        7,563,502  
US warrants*
      —         2,065,070        2,065,070  
    
 
 
     
 
 
     
 
 
  
 
*
1 American Depository Shares (ADS) listed on NASDAQ equals 10 ordinary shares listed on ASX thus the number of warrants on issue have been grossed up.