William M. Casey
Every company must find ways to grow against the backdrop of a transformative age. This new normal demands that leaders be purposeful in charting a path forward, one that will be neither vulnerable to nor deterred by external disruption.

Bill Casey

EY Americas Vice Chair, Transaction Advisory Services

Experienced transaction advisor. Fluent in English, Spanish and Portuguese. Competitive triathlete. Passionate about restoring vintage cars. Fan of Elvis. Husband. Father of two girls.

As EY Americas Vice Chair of Transaction Advisory Services (TAS) and a Partner with Ernst & Young LLP, Bill advises clients on capital strategy, M&A, public company spinoffs, IPOs and securities offerings.

He has led many large client engagements, including cross-border transactions for major multinational corporations and leading private equity firms. He has deep experience in the beverage, automotive, fintech, telecom and professional services sectors.

Over the last decade, Bill has worked to help double the talent and revenues of EY Americas TAS, which now number more than 4,000 professionals based in the United States, Canada, Mexico, and Central and South America.

Bill is a member of the EY Americas Operating Executive and a Certified Public Accountant. He received an MBA from DePaul University and a bachelor’s degree in accounting from the University of Illinois.

How Bill is building a better working world

Bill has helped transform EY Transaction Advisory services from M&A compliance and due diligence providers into market-leading strategic advisors. Integral to this transformation was the acquisition of The Parthenon Group in 2014, which significantly enhanced Transaction Advisory Services front-end strategic offerings.

With more than a decade of M&A, IPO and capital strategy work in the region, he was instrumental in growing EY in Latin America. In 1995, Bill helped launch EY Transaction Advisory Services in South America, which has since grown to more than 700 people. During his time as a partner in São Paulo, he also helped develop EY Transaction Advisory Services in Mexico and Brazil.