William Ziebell
CEO, Benefits and HR Consulting Division, Gallagher
William F. Ziebell joined Gallagher in 2000, working as a producer and manager for the employee benefits consulting and brokerage operation in the Troy, Michigan office. In 2002, he assumed the role of Assistant Branch Manager for the operation's Chicago branch, where he was named branch manager in 2003. He managed the region from 2004 until 2016. In 2017, he was promoted to Chief Executive Officer for Gallagher Benefit Services.
Mr. Ziebell began his career with Ernst & Young as a CPA, and has more than 25 years of sales and leadership experience. Throughout his career, he has led the way in centralizing and enhancing critical client services such as financial reporting and underwriting, wellness and employee communications.
He holds a Bachelor of Science in Accountancy from Northern Illinois University in DeKalb, Ill., and a Master of Business Administration in Marketing and Business Policy from the University of Chicago Booth School of Business.