Net Loss per Share (Tables)

9 Months Ended

Sep. 30, 2018

Anti-Dilutive Securities Excluded from Calculation of Diluted 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 September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Series A convertible preferred stock (if converted)		—		—		494,601		—
Options to purchase common stock		11,769,686		8,099,577		10,028,174		7,741,118
Common stock warrants		4,694,837		3,428,248		4,441,885		3,321,110
Restricted stock units		1,457,638		93,614		576,464		105,493
Total		17,922,161		11,621,439		15,541,124		11,167,721