Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity and Stock-Based Compensation (Details 1)

v3.19.1
Stockholders' Equity and Stock-Based Compensation (Details 1) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Research and development expenses $ 3,458,377 $ 2,282,938
General and administrative expenses 6,715,378 4,383,066
Total stock-based compensation expense 2,379,905 1,193,306
Employee Stock Option [Member]    
Research and development expenses 965,617 504,913
General and administrative expenses 1,414,288 688,393
Total stock-based compensation expense $ 2,379,905 $ 1,193,306