Net Loss per Share Attributable to Common Stockholders (Tables)

12 Months Ended

Dec. 31, 2017

Basic and Diluted Net Loss Per Common Share

The following table sets forth the computation of the basic and diluted net loss per common share during the years ended December 31, 2017 and 2016 (in thousands, except share and per share data):

	Year Ended December 31,
	2017			2016
Net loss attributable to common stockholders	$	(25,512	)	$	(16,945	)
Weighted-average number of shares used in computing net loss per share, basic and diluted		3,423,901			779,166
Net loss per share, basic and diluted	$	(7.45	)	$	(21.75	)

Anti-dilutive Security not Included In Diluted per Share Calculations

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:

	Year Ended December 31,
	2017		2016
Options to purchase common stock		821,741		140,990
Convertible preferred stock⁽¹⁾		736,000		—
Common stock warrants		1,751,708		12,063
Redeemable convertible notes		36,883		140,743
Total		3,346,332		293,796

(1)

As of December 31, 2017, represents 3,680 shares of Series A Preferred Stock on an as converted basis to 0.7 million shares of common stock.