Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2017

Summary of Significant Accounting Policies

Schedule of common stock equivalents excluded from the calculation of diluted net loss per share

	As of June 30,
	2017	2016
Convertible preferred stock	—	59,958,081
Stock options	3,044,093	2,029,402
Unvested restricted stock	—	100,883
	3,044,093	62,088,366