Exhibit 99.1 Investor Relations News from Aon Aon Reports First Quarter 2024 Results First Quarter Key Metrics • Total revenue increased 5% to 4.1billion,includingorganicrevenuegrowthof55.35, and EPS, adjusted for certain items, increased 9% to 5.66•Forthefirstthreemonthsof2024,cashflowsfromoperationswas309 million, and ...