A long-time McKinsey partner who successfully transitioned into the insurance brokerage world to drive a tech-enabled, unified consulting-brokerage model.
Early Life: Born in Kansas City, Case developed a disciplined, analytical approach early on, later refined through his long tenure at McKinsey.
First Break: His tenure as a leader of the Global Insurance and Financial Services Practice at McKinsey & Company served as the springboard to his appointment at Aon.
Path to CEO: Appointed in 2005 after a high-profile career at McKinsey, Case was brought in to modernize Aon's fragmented operations, shifting the firm from a traditional brokerage to a global professional services firm focused on risk, health, and retirement.
Original Vision: To create a unified firm ('Aon United') that leverages global data and analytics to provide superior risk and human capital solutions, differentiating Aon from traditional insurance brokers.
Greg Case’s leadership of Aon is defined by his pivot from classic risk-brokering to an integrated, data-driven professional services firm. Having spent over a decade at McKinsey, he brought a consultant’s rigor to Aon’s operations. Over two decades, he successfully navigated internal cultural shifts, the failed merger with Willis Towers Watson, and a massive pivot toward high-margin analytics and middle-market acquisitions.
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