Regan helped build Marsh & McLennan into the largest U.S. insurance broker and the first US company to buy its way into the world’s only major insurance underwriting exchange, Lloyd’s of London. Regan has played an instrumental role in creating a global presence for Marsh & McLennan, and in the process, he has achieved stellar financial returns. During his CEO tenure, Marsh & McLennan was recognized as one of the top 50 financially performing companies in the United States.