Gilead's board of directors approved the repurchase of an additional $12 billion of the company’s common stock to commence upon completion of the company’s existing $15 billion repurchase program authorized in January 2015

Source Link:

http://www.gilead.com/news/press-releases/2016/2/gilead-sciences-announces-declaration-of-q1-cash-dividend-and-increases-to-shareholder-return-programs