9. Net Loss Per Share

9 Months Ended

Sep. 30, 2017

Net Loss Per Share

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. Diluted net loss per share is computed similarly to basic net loss per share except that the denominator is increased to include the number of additional common shares that would have been outstanding if the potential common shares had been issued and if the additional common shares were dilutive. Diluted net loss per share is the same as basic net loss per common share, since the effects of potentially dilutive securities are antidilutive.

As of September 30, 2017 and 2016, the number of shares of common stock underlying potentially dilutive securities include:

	September 30,
	2017		2016
Convertible redeemable preferred stock		—		638,416
Warrants		317,630		—
Options to purchase common stock		165,000		122,000
Total		482,630		760,416