11. Capital Stock

The Company's authorized capital stock consists of 25 million shares of preferred stock, par value $.001 per share, 500 million shares of Class A common stock, par value $.001 per share, and 100 million shares of Class B common stock, par value $.001 per share. The shares of Class A common stock and Class B common stock are identical in all respects, except for voting rights and certain conversion rights and transfer restrictions, as follows: (1) each share of Class A common stock entitles the holder to one vote on matters submitted to a vote of the Company's stockholders and each share of Class B common stock entitles the holder to ten votes on each such matter; (2) stock dividends of Class A common stock may be paid only to holders of Class A common stock and stock dividends of Class B common stock may be paid only to holders of Class B common stock; (3) if a holder of Class B common stock transfers such shares to a person other than a permitted transferee, as defined in the Company's Certificate of Incorporation, such shares will be converted automatically into shares of Class A common stock; and (4) Class A common stock has no conversion rights; however, each share of Class B common stock is convertible into one share of Class A common stock, in whole or in part, at any time at the option of the holder. All outstanding Class B shares have been converted to Class A shares. As of December 31, 2014 and 2015, there were no preferred or Class B common shares outstanding.

Weighted-average common shares outstanding

The following is a reconciliation of the weighted-average common shares outstanding for purposes of computing basic and diluted net income per share (U.S. dollars in thousands):

	Year Ended December 31,
	2013		2014		2015

Basic weighted-average common shares outstanding		58,606		59,073		57,997
Effect of dilutive securities: Stock awards and options		2,842		1,814		1,060
Diluted weighted-average common shares outstanding		61,448		60,887		59,057

NU SKIN ENTERPRISES, INC.

Notes to Consolidated Financial Statements

For the years ended December 31, 2013, 2014 and 2015, other stock options totaling 1.2 million, 2.7 million and 1.8 million, respectively, were excluded from the calculation of diluted earnings per share because they were anti-dilutive.

Repurchases of common stock

In 1998, the Company's board of directors approved a stock repurchase plan authorizing the Company to repurchase $10.0 million of its outstanding shares of Class A common stock on the open market or in private transactions. The Company's board from time to time increased the amount authorized under the 1998 stock repurchase plan, including an increase of $400.0 million announced in August 2013. In October 2015, the Company's board terminated the 1998 stock repurchase plan and approved a new repurchase plan with an initial authorization amount of $500.0 million. The repurchases are used primarily to offset dilution from our equity incentive plans and for strategic initiatives. During the years ended December 31, 2013, 2014 and 2015, the Company repurchased 1.7 million, 0.8 million and 3.8 million shares of Class A common stock for an aggregate price of $140.9 million, $45.7 million and $164.1 million, respectively. At December 31, 2015, $446.9 million was available for repurchases under the 2015 stock repurchase plan.