5. Net Loss Per Share

Because we have reported a net loss attributable to common stockholders for all periods presented, basic and diluted net loss per share attributable to common stockholders are the same for all periods presented. For periods presented, 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.

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


	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Numerator:
Net loss	$	(29,905,237	)	$	(4,795,059	)	$	(37,594,401	)	$	(8,024,985	)
Less: preferred stock accretion and dividends		(1,962,072	)		(104,548	)		(2,125,141	)		(247,562	)

Net loss attributed to common stockholders	$	(31,867,309	)	$	(4,899,607	)	$	(39,719,542	)	$	(8,272,547	)

Denominator:
Weighted-average common shares outstanding, basic and diluted		15,527,867			6,911,715			11,595,698			6,911,366

Net loss per share attributed to common stockholders, basic and diluted	$	(2.05	)	$	(0.71	)	$	(3.43	)	$	(1.20	)

Potential common shares issuable upon conversion, vesting or exercise of convertible preferred stock, redeemable 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:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Convertible preferred stock		—		517,860		—		411,736
Redeemable preferred stock		5,863,564		—		5,863,564		—
Common stock warrants		2,350,085		538,003		2,350,085		442,910
Common stock options		1,720,004		831,248		1,720,004		838,595
Restricted stock		25,559		—		25,559		—