Michael E. O'Neill
(born 1946) is an American business executive. He is currently the chairman of Citigroup.
Early life and education
He was born in Santa Monica, California and spent much of his early life in Europe and Asia. He graduated from Princeton University in 1969 and rose to the rank of lieutenant in the Marine Corps between 1969 and 1971. He received an MBA in 1974 from the University of Virginia.
In 1974 he joined Continental Illinois and moved to First Interstate Capital Markets in 1984 returning to Continental in 1989 to manage its mergers and acquisitions advisory business. In 1992 he became CFO of Continental. After Continental was acquired by BankAmerica he was head of its global equity investments division in 1994 and 1995. From 1995 to 1999 he was BankAmerica's CFO.
In 1999 he became chief executive of Barclays Bank but resigned after two months because he had developed an arrhythmic heartbeat. Michael Corbat, previously Citigroup's CEO of Europe, Middle East, and Africa, was named as his replacement. His resignation followed multiple payouts to investors during ongoing fraud allegations.
Source @ Wikipedia