Net Loss Per Share

9 Months Ended

Sep. 30, 2019

9. Net Loss Per Share

Basic and diluted net loss per share attributable to common stockholders was calculated as follows (in thousands, except share and per share amounts):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
Numerator:
Net loss	$	(11,923	)	$	(10,168	)	$	(34,130	)	$	(25,926	)
Accretion of redeemable convertible preferred stock to redemption value		—			—			—			(16	)
Net loss attributable to common stockholders	$	(11,923	)	$	(10,168	)	$	(34,130	)	$	(25,942	)
Denominator:
Weighted average common shares outstanding, basic and diluted		30,661,125			29,879,476			30,418,752			23,169,348
Net loss per share attributable to common stockholders, basic and diluted	$	(0.39	)	$	(0.34	)	$	(1.12	)	$	(1.12	)

The Company’s potential dilutive securities have been excluded from the computation of diluted net loss per share as the effect would be to reduce the net loss per share. The Company excluded the following potential common shares, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to common stockholders for the periods indicated above because including them would have had an anti-dilutive effect:

	September 30,
	2019		2018
Redeemable convertible preferred shares (as converted to common stock)		—		—
Stock options to purchase common stock		4,663,988		3,768,371
		4,663,988		3,768,371