Net Loss Per Share

6 Months Ended

Jun. 30, 2018

8. Net Loss Per Share

Basic and diluted net loss per share is computed by dividing net loss by the weighted-average number of common stock outstanding during the period. For periods in which the Company generated a net loss, the Company does not include the potential impact of dilutive securities in diluted net loss per share, as the impact of these items is anti-dilutive.

The following weighted-average equity instruments were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Unvested restricted common stock		30,408		63,431		31,233		68,693
Options to purchase common stock		3,015,991		1,894,831		2,856,763		1,618,721