Net Loss Per Share Attributable to Common Stockholders (Tables)

3 Months Ended

Mar. 31, 2019

Net Loss Per Share Attributable to Common Stockholders

Schedule of calculation of basic and diluted net income (loss) per common share

	Three Months Ended
	March 31,
	2019		2018
		(unaudited)
Net loss attributable to common shareholders (basic and diluted)	$	(8,303,871)	$	(6,691,637)
Shares used to compute net loss per common share, basic and diluted		34,524,145		8,631,142
Net loss per share attributable to common shareholders, basic and diluted	$	(0.24)	$	(0.75)

Schedule of common stock equivalents excluded from the calculation of diluted net loss per common share

	March 31,	March 31,
	2019	2018
	(unaudited)
Options issued and outstanding	2,843,754	1,043,070
Inducement options issued and outstanding	208,865	—
Warrants to purchase common stock	5,027,495	321,335
Restricted stock units	392,904	392,923
Convertible preferred stock	33,149,556	3,314,956
Convertible debt	759,396	759,396
Total	42,381,970	5,831,680