Net Loss Per Share

9 Months Ended

Sep. 30, 2018

13. Net Loss per Share

Basic and diluted net loss per share is computed by dividing net loss by the weighted-average number of common stock outstanding during the period. For periods in which the Company generated a net loss, the Company does not include the potential impact of dilutive securities in diluted net loss per share, as the impact of these items is anti-dilutive.

The following weighted-average equity instruments were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented:

	Nine Months Ended
	September 30, 2018		September 30, 2017
Awards under equity incentive plan		2,634,295		1,607,078
Unvested restricted shares and restricted stock units		173,422		78,396
Derivative call option		—		650,000
Warrants to purchase common stock		1,665,170		1,293,684
Total		4,472,887		3,629,158