Net Loss Per Common Share

3 Months Ended

Mar. 31, 2020

Basic net loss per common share is calculated by dividing net loss attributable to common stockholders by the weighted-average number of common shares outstanding during the period, without consideration of common stock equivalents. Diluted net loss per common share is computed by dividing net loss attributable to common stockholders by the weighted-average number of common share equivalents outstanding for the period determined using the treasury stock method. The following outstanding common stock equivalents have been excluded from diluted net loss per common share because their inclusion would be anti-dilutive:


	Three Months Ended March 31,
	2020	2019
Shares of common stock subject to outstanding options	4,760,128	5,670,819
Employee stock purchase plan	19,857	25,672
Restricted stock units	936,524	538,759
Total common stock equivalents	5,716,509	6,235,250