Potentially Dilutive Securities

3 Months Ended

Mar. 31, 2016

4. Potentially Dilutive Securities

The Company’s potential dilutive securities, which include stock options, restricted stock units and warrants, have been excluded from the computation of diluted net loss per common share as the effect of including those securities would be to reduce the net loss per common share and be antidilutive. Therefore, the denominator used to calculate both basic and diluted net loss per common share is the same in each period presented.

The following outstanding potentially dilutive securities have been excluded from the computations of diluted net loss per common share:

	As of March 31,
	2016		2015
Options to purchase common stock		397,988		502,602
Restricted stock units		3,750		—
Warrants to purchase common stock		131,193		11,067
		532,931		513,669