Net Loss per Share

6 Months Ended

Jun. 30, 2017

12. Net Loss per Share

The shares in the table below were excluded from the calculation of diluted net loss per share, prior to the use of the treasury stock method, due to their anti-dilutive effect:

	Three months ended				Six months ended
	June 30, 2017		June 30, 2016		June 30, 2017		June 30, 2016
Warrants		509,611		—		509,611		—
Outstanding stock options		4,027,408		2,753,908		4,027,408		2,753,908
Unvested restricted stock		28,512		159,640		28,512		159,640
Unvested restricted stock units		829,463		396,813		829,463		396,813
Total		5,394,994		3,310,361		5,394,994		3,310,361