Complex sentence: American Management Systems (previous NASDAQ symbol: AMSY) was a technology and management consulting firm, founded in 1970 by a group of five former Defense Department officials who had worked under Robert McNamara in the Kennedy and Johnson administrations.
Split into simpler sentences: American Management Systems (previous NASDAQ symbol: AMSY) was founded in 1970 as a technology and management consulting firm. It was founded by a group of five former United States Department of Defense officials who worked under Robert McNamara in the Kennedy and Johnson administrations.