Net loss per share

9 Months Ended

Sep. 30, 2016

Earnings Per Share [Abstract]

Net loss per share

10. Net Loss Per Share

The following table sets forth the outstanding potentially dilutive securities that have been excluded in the calculation of diluted net loss per share because to do so would be anti-dilutive (in common stock equivalent shares):

	As of September 30,
	2016	2015
Redeemable convertible preferred stock	—	17,647,054
Unvested restricted common stock	1,300,837	2,013,140
Outstanding stock options	1,862,619	852,249
Total	3,163,456	20,512,443