Note 8 - Net Loss Per Share

9 Months Ended

Sep. 30, 2018

Notes to Financial Statements

Earnings Per Share [Text Block]

( 8 ) Net Loss per Share

Basic net loss per share is computed by dividing net loss by the weighted-average number of common shares outstanding for the period. Diluted net loss per share is computed by dividing the net loss by the weighted-average number of common share equivalents outstanding for the period determined using the treasury-stock method. For all periods presented, there is

no

difference in the number of shares used to calculate basic and diluted shares outstanding since the effects of potentially dilutive securities are antidilutive due to our net loss position.  

The following outstanding common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because including them would have been antidilutive:

	September 30,
	2018		2017
Stock options to purchase common stock		5,549,106		4,142,692
Unvested restricted stock units		267,359		97,996
Total		5,816,465		4,240,688