Net Loss Per Share

12 Months Ended

Dec. 31, 2018

4.	Net Loss Per Share

Because the Company has reported net loss attributable to common stockholders for the years ended December 31, 2018 and 2017, basic and diluted net loss per share attributable to common stockholders are the same for both years. All preferred stock, unvested restricted stock, common stock warrants, and stock options have been excluded from the computation of diluted weighted-average shares outstanding because such securities would have an antidilutive impact. As more fully described in Note 1 and 3, in connection with the Reverse Stock Split and Mergers, all historical share and per share information including common stock, preferred stock, unvested restricted stock, common stock warrants, and stock options, has been retroactively adjusted to reflect the effect of the Reverse Stock Split and share exchange ratio.

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	)

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