Net loss per share

3 Months Ended

Mar. 31, 2020

Net loss per share

Net loss per share

8.         Net loss per share

Basic and diluted net loss per share attributable to common stockholders was calculated as follows for the three months ended March 31, 2020 and 2019 (in thousands, except per share data):

	Three months ended
	March 31,
	2020		2019
Numerator:
Net loss attributable to common stockholders	$	(14,710)	$	(16,711)
Denominator:
Weighted-average common shares outstanding—basic and diluted		43,835		33,390
Net loss per share attributable to common stockholders—basic and diluted	$	(0.34)	$	(0.50)

The following common stock equivalents outstanding as of March 31, 2020 and 2019, were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because including them would have been anti‑dilutive (in thousands):

	As of
	March 31,
	2020	2019
Stock options issued and outstanding	6,419	4,610
Unvested restricted stock	967	104
Total	7,386	4,714