Basic and Diluted Net Loss per Share

12 Months Ended

Dec. 31, 2019

Basic net loss per common share is computed by dividing net loss attributable to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net loss per common share is computed giving effect to all dilutive potential common shares that were outstanding during the period. Diluted potential common shares consist of incremental shares issuable upon exercise of stock options, warrants and restricted stock units. No adjustments have been made to the weighted average outstanding common shares figures for the years ended December 31, 2019 or 2018 as the assumed exercise of outstanding options, warrants and restricted stock units would be anti-dilutive.

Potential common shares not included in calculating diluted net loss per share are as follows:



	December 31
	2019	2018
Stock options	1,830,958	1,529,964
Stock warrants	2,071,172	333,034
Nonvested restricted stock units	443,927	382,098
Total	4,346,057	2,245,096