SAN DIEGO--(BUSINESS WIRE)--Jack in the Box Inc. (NASDAQ: JACK) today announced that its Board of Directors has authorized an additional $200 million stock buyback program commencing in fiscal year 2016 and expiring in November 2017. During fiscal year 2015, the company repurchased approximately 3,743,000 shares at an average price of $84.71 per share, for an aggregate cost of $317.1 million, including $65.5 million in the fourth quarter of fiscal 2015. This completed a $100 million stock buyba