Currently, Gregory C. Case occupies the position of Chief Executive Officer & Executive Director at Aon Plc and President & Chief Executive Officer at Aon Re Worldwide, Inc., Chief Executive Officer & Executive Director at Aon Plc (United Kingdom) and President of Aon Corp. (Illinois) (which are all subsidiaries of Aon Plc).

He is also on the board of 7 other companies.

In his past career Mr. Case was Head-Financial Services Practice at McKinsey & Co., Inc., Principal at Federal Reserve Bank of Kansas City and Principal at Piper Jaffray, Inc.

Mr. Case received an undergraduate degree from Kansas State University and an MBA from Harvard Business School.