Annual report pursuant to Section 13 and 15(d)

8. STOCK OPTIONS AND WARRANTS (Tables)

v3.7.0.1
8. STOCK OPTIONS AND WARRANTS (Tables)
12 Months Ended
Apr. 30, 2017
Employee stock option activity
    Options     Weighted
Average
Exercise Price
    Weighted
Average
Grant Date
Fair Value
per Share
 
                   
Outstanding, April 30, 2015     52,450,000       0.15       0.11  
Issued     15,600,000       0.06       0.04  
Exercised                  
Outstanding, April 30, 2016     68,050,000       0.13       0.09  
Issued     23,550,000       0.10       0.08  
Forfeited     (12,500,000 )     0.07       0.04  
Exercised                  
Outstanding, April 30, 2017     79,100,000       0.13       0.09  
Exercisable, April 30, 2017     72,300,000     $ 0.13        
Vested and expected to vest     79,100,000     $ 0.13     $  
Unvested employee stock option activity
    Options     Weighted
Average
Grant Date
Fair Value
per Share
 
             
Non-vested, April 30, 2015     6,600,000     $  
Granted     15,600,000       0.05  
Vested     (11,800,000 )      
Forfeited            
Non-vested, April 30, 2016     10,400,000        
Granted     23,550,000       0.08  
Vested     (14,650,000 )      
Forfeited     (12,500,000 )      
Non-vested, April 30, 2017     6,800,000     $ 0.10  
Range of outstanding stock options
  Exercise Price  
Exercise Price $ 0.19   $ 0.11   $ 0.18   $ 0.063   $ 0.10   $ 0.07  
Number of Options Outstanding   25,000,000     27,200,000     250,000     15,600,000     10,450,000     600,000  
Weighted Average Remaining Contractual Life (years) of Outstanding Options   2.42     2.67     2.97     3.67     2.92     4.00  
Weighted Average Exercise Price $ 0.19   $ 0.11   $ 0.18   $ 0.063   $ 0.104   $ 0.104  
Number of Options Exercisable   25,000,000     27,200,000     250,000     15,600,000     3,650,000     600,000  
Weighted Average Exercise Price of Exercisable Options $ 0.19   $ 0.11   $ 0.18   $ 0.063   $ 0.10   $ 0.07  
Warrant activity
    Warrants     Weighted
Average
Exercise Price
 
Outstanding, April 30, 2015     72,969,908       0.17  
Issued     17,000,000        
Exercised     (5,000,000 )      
Outstanding, April 30, 2016     84,969,908       0.16  
Issued     1,638,796        
Expired     (18,755,200 )      
Outstanding, April 30, 2017     67,853,504        
Exercisable, April 30, 2017     67,853,504     $ 0.13  
Schedule of warrants outstanding and exercisable
Range of Exercise Prices   Number of
Warrant Shares
Exercisable at
04/30/2017 
    Weighted
Average
Remaining
Contractual
Life
    Weighted
Average
Exercise Price
 
$0.0575, $0.065, $0.075, $0.11, $0.12 and $0.18     67,853,504       1.85       0.13  
                         
Five Year Term    –    $0.075     1,056,000       0.44          
Five Year Term    –    $0.12     35,347,508       2.17          
Five Year Term    –    $0.18     19,811,200       0.67          
Five Year Term    –    $0.11     10,000,000       2.90          
Five Year Term    –    $0.065     769,231       4.64          
Five Year Term     –   $0.0575     869,565       4.93          
      67,853,504                  
Non-Employee Options [Member]  
Assumptions
    Years Ended April 30,  
    2017     2016  
Risk-free interest rate     2.1%       2.0%  
Expected volatility     108%       140%  
Expected lives (years)     2.9       3.0  
Expected dividend yield     0.00%       0.00%  
Employee Options [Member]  
Assumptions
    Years Ended April 30,  
    2017     2016  
Risk-free interest rate     1.8%        
Expected volatility     110%        
Expected lives (years)     5.0        
Expected dividend yield     0.00%