Net Loss per Share Attributable to Common Stockholders

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Net Loss per Share Attributable to Common Stockholders

8. Net Loss per Share Attributable to Common Stockholders

The following table sets forth the computation of the basic and diluted net loss per common share during the nine months ended September 30, 2019 and 2018 (in thousands, except share and per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
Net loss attributable to common stockholders	$	(12,706	)	$	(7,694	)	$	(41,568	)	$	(19,218	)
Weighted-average number of shares used in    computing net loss per share, basic and diluted		12,022,620			11,942,729			11,992,240			10,967,750
Net loss available for common stockholders    per share, basic and diluted	$	(1.06	)	$	(0.64	)	$	(3.47	)	$	(1.75	)

Since the Company was in a loss position for all periods presented, diluted net loss per share is the same as basic net loss per share for all periods as the inclusion of all potential common shares outstanding would have been anti-dilutive. Potentially dilutive securities on an as-if converted basis that were not included in the diluted per share calculations because they would be anti-dilutive were as follows:

	Nine Months Ended September 30,
	2019		2018
Options to purchase common stock		1,569,838		1,319,102
Common stock warrants		7,857		12,039
Total		1,577,695		1,331,141