Greg Case

Greg Case has served as CEO of Aon plc since 2005, transforming one of the world's largest professional services firms into a leading global risk advisory, insurance brokerage, and human capital solutions company. Aon serves clients in over 120 countries, helping organizations assess and manage risk, place insurance, and optimize their workforce strategies. Alongside Marsh McLennan, Aon forms a duopoly at the top of the global insurance brokerage industry. Case's most transformative recent move was the $13.4 billion acquisition of NFP in 2024, the largest deal in the insurance brokerage sector. NFP, a leading middle-market insurance broker and benefits consultant, dramatically expanded Aon's capabilities in the fast-growing US middle market segment. Previously, Case had attempted a merger of equals with Willis Towers Watson that was ultimately blocked by regulators in 2021. His key decisions involve NFP integration and cross-selling, organic revenue growth acceleration, data and analytics investment (Aon Insights platform), managing the tension between the competitive insurance brokerage market and fee pressure, and capital deployment strategy. Aon's stock reflects the secular growth of insurance and risk management spending.