Annual report pursuant to Section 13 and 15(d)

Consolidated Statement of Changes in Stockholders' (Deficit) Equity

v3.7.0.1
Consolidated Statement of Changes in Stockholders' (Deficit) Equity - USD ($)
Total
Private Equity Offering One
Private Equity Offering Two
Conversion Features One
Conversion Features Two
Conversion Features Three
Conversion Features Four
Exercise Price 1
Exercise Price 2
Preferred Stock
Preferred Stock
Series B Convertible Preferred Stock
Common Stock
Common Stock
Series B Convertible Preferred Stock
Common Stock
Private Equity Offering One
Common Stock
Private Equity Offering Two
Common Stock
Conversion Features Two
Common Stock
Conversion Features Three
Common Stock
Conversion Features Four
Common Stock
Exercise Price 1
Common Stock
Exercise Price 2
Additional Paid-in Capital
Additional Paid-in Capital
Private Equity Offering One
Additional Paid-in Capital
Private Equity Offering Two
Additional Paid-in Capital
Conversion Features One
Additional Paid-in Capital
Conversion Features Two
Additional Paid-in Capital
Conversion Features Three
Additional Paid-in Capital
Conversion Features Four
Additional Paid-in Capital
Exercise Price 1
Additional Paid-in Capital
Exercise Price 2
Accumulated Deficit
Beginning balance at May. 31, 2015 $ (10,692,516)                 $ 95   $ 63,644                 $ 60,766,047                 $ (71,522,302)
Beginning balance, shares at May. 31, 2015                   95,100   63,644,348                                    
Interest expense related to warrant extension       $ 757,871                                       $ 757,871            
Debt discount due to reduction in note conversion price from ($0.75 to $0.675/share) 329,524                                       329,524                  
Stock-based compensation 2,353,194                                       2,353,194                  
Modification of warrants related to conversion inducement       $ 866,713                                       $ 866,713            
Conversion of convertible debt and extinguishment of derivative liability, Value           $ 4,732,514                     $ 5,275                 $ 4,727,239        
Conversion of convertible debt and extinguishment of derivative liability, shares                                 $ 5,274,656                          
Proceeds from private equity offering, shares                           44,357,838 4,301,500                              
Proceeds from private equity offering, value   $ 33,268,464 $ 4,301,500                     $ 44,358 $ 4,302             $ 33,224,106 $ 4,297,198              
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, shares                               4,095,008   792,201                        
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, value         $ 2,764,154   $ 594,152                 $ 4,095   $ 792             $ 2,760,059   $ 593,360      
Proceeds from warrant exercise, shares                                     192,307 603,286                    
Proceeds from warrant exercise, value               $ 96,154 $ 452,465                   $ 192 $ 604               $ 95,962 $ 451,861  
Cashless exercise of warrants, shares                       74,490                                    
Cashless exercise of warrants, value                       $ 74                 (74)                  
Deferred offering costs (3,915,127)                                       (3,915,127)                  
Net (loss) at year ended (25,703,612)                                                         (25,703,612)
Ending balance at May. 31, 2016 10,205,450                 $ 95   $ 123,336                 107,307,933                 (97,225,914)
Ending balance, shares at May. 31, 2016                   95,100   123,335,634                                    
Proceeds from Registered Direct Offering ($0.75/share), shares                       24,538,994                                    
Interest expense related to warrant extension 72,434                     $ 36                 72,398                  
Stock-based compensation 1,204,791                                       1,204,791                  
Legal fees in connection with registered offerings (280,883)                                       (280,883)                  
Proceeds from private equity offering, shares                             729,500                              
Proceeds from private equity offering, value     $ 729,500                       $ 730               $ 728,770              
Proceeds from Registered Direct Offering ($0.75/share), value 14,044,252                     $ 24,539                 14,019,713                  
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, shares                     (3,000)   40,602                                  
Offering costs related to equity offering (1,804,249)                                       (1,804,249)                  
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, value                     $ (3)   $ 3                                  
Debt discount related to convertible notes payable 91,389                                       91,389                  
Proceeds from warrant exercise, shares                                     730,765 43,332                    
Proceeds from warrant exercise, value               $ 365,383 $ 32,500                   $ 730 $ 44               $ 364,653 $ 32,456  
Cashless exercise of warrants, shares                       49,417                                    
Cashless exercise of warrants, value                       $ 50                 (50)                  
Net (loss) at year ended (25,763,801)                                                         (25,763,801)
Ending balance at May. 31, 2017 $ (1,103,234)                 $ 92   $ 149,468                 $ 121,736,921                 $ (122,989,715)
Ending balance, shares at May. 31, 2017                   92,100   149,468,244