Net Income Per Share Attributable to Gilead Common Stockholders

3 Months Ended

Mar. 31, 2018

Net Income Per Share Attributable to Gilead Common Stockholders

NET INCOME PER SHARE ATTRIBUTABLE TO GILEAD COMMON STOCKHOLDERS

Basic net income per share attributable to Gilead common stockholders is calculated based on the weighted-average number of shares of our common stock outstanding during the period. Diluted net income per share attributable to Gilead common stockholders is calculated based on the weighted-average number of shares of our common stock outstanding and other dilutive securities outstanding during the period. The potentially dilutive shares of our common stock resulting from the assumed exercise of outstanding stock options and equivalents were determined under the treasury stock method.

We have excluded stock options and equivalents of 12 million and 9 million for the three months ended March 31, 2018 and 2017, respectively, from the computation of diluted net income per share attributable to Gilead common stockholders because their effect was antidilutive.

The following table summarizes the calculation of basic and diluted net income per share attributable to Gilead common stockholders (in millions, except per share amounts):



	Three Months Ended
	March 31,
	2018		2017
Net income attributable to Gilead	$	1,538	$	2,702
Shares used in per share calculation - basic	1,307		1,308
Effect of dilutive securities:
Stock options and equivalents	13		12
Shares used in per share calculation - diluted	1,320		1,320
Net income per share attributable to Gilead common stockholders - basic	$	1.18	$	2.07
Net income per share attributable to Gilead common stockholders - diluted	$	1.17	$	2.05