Net Loss per Share Attributable to Common Stockholders (Tables)

6 Months Ended

Jun. 30, 2019

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 six months ended June 30, 2019 and 2018 (in thousands, except share and per share data):

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
Net loss attributable to common stockholders	$	(13,780	)	$	(6,482	)	$	(28,862	)	$	(11,524	)
Weighted-average number of shares used in computing net loss per share, basic and diluted		11,989,866			11,938,401			11,976,799			10,472,180
Net loss available for common stockholders per share, basic and diluted	$	(1.15	)	$	(0.54	)	$	(2.41	)	$	(1.10	)

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:

	Six Months Ended June 30,
	2019		2018
Options to purchase common stock		1,648,294		1,071,899
Common stock warrants		7,857		12,039
Redeemable convertible notes		—		—
Total		1,656,151		1,083,938