Mr. Altabef served as chair of the board of Unisys Corporation, a global information technology company, from April 2018 to April 2026. He previously served as CEO of Unisys Corporation from January 2015 to April 2025. Mr. Altabef also served as president from January 2015 through March 2020 and from November 2021 to May 2022. Prior to joining Unisys Corporation, he served as president and CEO of MICROS Systems, Inc., a provider of integrated software and hardware solutions to the hospitality and retail industries, from 2013 to 2014, when it was acquired by Oracle Corporation. Before that, he served as president and CEO of Perot Systems Corporation from 2004 to 2009, when it was acquired by Dell Inc. Following the acquisition, Mr. Altabef served as president of Dell Services, the information technology services and business process solutions unit of Dell Inc., until his departure in 2011.
Mr. Altabef previously served as chair of the board of directors of Unisys Corporation. He is also a member of the President’s National Security Telecommunications Advisory Committee (NSTAC), a trustee of the Committee for Economic Development (CED), a member of the advisory board of Merit Energy Company, LLC and of the board of directors of Petrus Trust Company, LTA. He previously served as a senior advisor to 2M Companies, Inc., in 2012, and as a director of MICROS Systems, Perot Systems Corporation and Belo Corporation. He is also active in community service activities, having served on the boards and committees of several cultural, medical, educational and charitable organizations and events.