Stockholders’ Equity and Earnings per Share

In November 2017, the Company’s board of directors increased the quarterly cash dividend by 4% from $0.365 per share to $0.380 per share.

In November 2016, the Company's board of directors authorized a share repurchase program allowing the Company to purchase up to $1.0 billion of its outstanding shares of common stock, subject to market conditions. During the nine months ended June 30, 2018, the Company purchased 3.8 million shares of its common stock for a total of $325.4 million, which included $25.0 million of June 2018 purchases that cash settled in July 2018. As of June 30, 2018, the Company had $463.5 million of availability remaining under the November 2016 share repurchase program.

Basic earnings per share is computed by dividing net income attributable to AmerisourceBergen Corporation by the weighted average number of shares of common stock outstanding during the periods presented. Diluted earnings per share is computed by dividing net income attributable to AmerisourceBergen Corporation by the weighted average number of shares of common stock outstanding, plus the dilutive effect of stock options, restricted stock, and restricted stock units during the periods presented.



	Three months ended June 30,		Nine months ended June 30,
(in thousands)	2018	2017	2018	2017
Weighted average common shares outstanding - basic	218,569	218,676	218,698	218,336
Dilutive effect of stock options, restricted stock, and restricted stock units	2,191	3,197	2,599	3,362
Weighted average common shares outstanding - diluted	220,760	221,873	221,297	221,698

The potentially dilutive stock options, restricted stock, and restricted stock units that were antidilutive for the three and nine months ended June 30, 2018 were 3.1 million and 3.2 million, respectively. The potentially dilutive stock options, restricted stock, and restricted stock units that were antidilutive for the three and nine months ended June 30, 2017 were 3.7 million and 4.3 million, respectively.