Common Stock (Tables)

12 Months Ended

Dec. 31, 2016

Common Stock

Schedule of Common Stock reserved for future issuance

	As of December 31,
	2016		2015
Warrants for the purchase of Common Stock		24,566		59,405
Options to purchase Common Stock		2,939,968		2,557,456
Employee Stock Purchase Plan		335,484		182,352
Total		3,300,018		2,799,213