William J. Hannigan

Mr. William J. Hannigan

Mr. William Hannigan is the former president and chief operating officer of AT&T. Joining the firm in late 2003, he helped lead AT&T through a challenging time in its and the industry’s history.

Previously, Mr. Hannigan served as chairman and CEO at Sabre Holdings, an S&P 500 company and a world leader in travel commerce, distribution, and technology. He served as chairman of the board of Travelocity.com. He also served as a senior corporate officer with Sprint, Pacific Bell, and SBC Communications.

He was appointed by President George W. Bush to the President’s Information Technology Advisory Committee and the National Security Telecommunications Advisory Committee in 2001 and 2004, respectively. He also has served on many corporate and non-profit boards and advisory committees.

Mr. Hannigan enlisted in the Navy in 1977, serving on board the submarine USS Jack (SSN-605). He holds a master of business administration from the University of Colorado.