Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2018

Schedule of Computation of Basic and Diluted Net Loss Per Share

The following table sets forth the computation of basic and diluted net loss per share:

	For the Year Ended December 31,
	2018			2017
Numerator
Net loss	$	(39,171,152	)	$	(46,425,390	)
Less: preferred stock accretion and other deemed dividends		(3,307,800	)		(4,930,010	)
Net loss attributable to common stockholders	$	(42,478,952	)	$	(51,355,400	)
Denominator
Weighted-average common shares outstanding, basic and diluted		2,802,382			431,878
Net loss per share attributable to common stockholders, basic and diluted	$	(15.16	)	$	(118.91	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Potential common shares issuable upon conversion, vesting or exercise of preferred stock, unvested restricted stock, common stock warrants, and stock options that are excluded from the computation of diluted weighted-average shares outstanding are as follows:

	As of December 31,
	2018		2017
Redeemable preferred stock		—		4,560,550
Common stock warrants		7,344,297		2,350,085
Common stock options		353,274		1,819,316
Unvested restricted stock		323,404		23,428