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NET LOSS PER SHARE (Tables)
3 Months Ended
Mar. 31, 2019
Loss per share, basic and diluted:  
Schedule of potentially dilutive securities

The table below presents potentially dilutive securities that could affect our calculation of diluted net loss per share allocable to common stockholders for the periods presented.

 

    Three months ended  
    March 31,
2019
    March 31,
2018
 
Stock options     21,447,719       25,196,684  
Warrants     1,832,571       3,290,905  
Restricted stock awards     1,040,000        
      24,320,290       28,487,589