Net Loss per Share

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Net Loss per Share

14. Net Loss per Share

Basic net loss per share is computed by dividing the net loss by the weighted average number of common shares outstanding during the period. For periods in which the Company reports net income, diluted net income per share is determined by adding to the basic weighted average number of common shares outstanding the total number of dilutive common equivalent shares using the treasury stock method, unless the effect is anti-dilutive. Potentially dilutive shares were not included in the calculation of diluted net loss per share for each of the three and nine months ended September 30, 2019 and 2018, respectively, as their inclusion would be anti-dilutive.

Potential common stock equivalents excluded from the calculation of diluted earnings per share because the effect would have been anti-dilutive were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Stock options		10,612,258		7,984,469		10,612,258		7,984,469
ESPP		54,895		—		54,895		—
Warrants		486,812		486,812		486,812		486,812
Restricted stock units		812,347		1,395,829		812,347		1,395,829
Performance stock units		56,666		466,668		56,666		466,668
Deferred stock units		—		35,418		—		35,418
		12,022,978		10,369,196		12,022,978		10,369,196