Mr. Kellner has served as president of Emerald Creek Group, a private equity firm that he founded, since 2010. He served as Sabre’s chairman of the board from 2013 to 2016 and from December 31, 2017 to January 14, 2020. Mr. Kellner previously served as Sabre’s executive chairman on an interim basis from December 31, 2016 to December 31, 2017. He previously was with Continental Airlines, Inc. from 1995 to 2009 where he served as president and chief operating officer from 2003 to 2004, and chairman and CEO from 2004 through 2009. He was also a member of the Continental Airlines, Inc. board of directors from 2001 to 2009. In addition to Sabre, Mr. Kellner also currently serves on other boards of directors, including The Boeing Company and Marriott International, Inc.