Background
O'Halleran, Michael D. was born in 1953.
O'Halleran, Michael D. was born in 1953.
Bachelor in Accounting and Finance, University Wisconsin, Whitewater.
Senior executive Wausau Insurance Companies, General Reins., Alexander Re. Various senior operating positions Aon Corporation, Chicago, since 1987, president, chief operating officer, 1999—2004, senior executive vice president, since 2004, executive chairman Aon Re Global, 2006—2007, executive chairman Aon Benfield (formerly Aon Re Global), since 2007. Board directors Allegiance Corporation, since 1996, Cardinal Health, Inc., since 1999, CareFusion Corporation.
Board trustees Dublin City University, Ireland. Board directors Angus Robinson Junior Memorial Foundation. Member of World Presidents Organization, Economic Club Chicago.