Business 100 - 2013

William M. Casey/Ernst & Young

William M. Casey is the deputy vice chair for Ernst & Young’s Americas Transaction Advisory Services business. Bill joined the firm in 1983 and has been a partner for over 17 years.

Fluent in both Spanish and Portuguese, he worked on transactions in Latin America for more than a decade and spent four years as a partner in Ernst & Young’s Sao Paulo office. Throughout his career, Bill has worked with strategic and private equity buyers in payment and transaction processing, electronic funds transfer and outsourcing. His work has extended to the beverage, automotive, and telecommunications industries.

A Chicago native, Bill graduated from the University of Illinois with a BS in accountancy, and went on to earn an MBA from DePaul University. His mother is a native of Crossmolina and his father is from Castlebar, both in County Mayo. He and wife, Amy, have two daughters, Sarah and Hannah. He says, “the Chicago Irish community has given me an appreciation of the intelligence, creativity and passion of the Irish people and their tremendous achievements.”