Net Loss per Share

6 Months Ended

Jun. 30, 2018

13.	Net Loss per Share

Since the Company was in a loss position for all periods presented, diluted net loss per common share is the same as basic net loss per common share for all periods presented, because the inclusion of all potential common shares outstanding would have an anti-dilutive effect. The following weighted-average common stock equivalents were excluded from the calculation of diluted net loss per share for the periods presented, because including them would have an anti-dilutive effect:

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Series A convertible preferred stock (if converted)		593,522		—		746,001		—
Options to purchase common stock		9,714,129		8,006,323		9,157,418		7,561,888
Common stock warrants		4,811,629		3,428,248		4,315,410		3,266,653
Restricted stock units		134,587		110,494		135,878		111,530
Total		15,253,867		11,545,065		14,354,707		10,940,071