Officer and Director Transactions - Aon plc

Andy Marcell, Global CEO of Solution Lines at Aon plc, reported several transactions on March 13, 2026, related to Class A Ordinary Stock and Restricted Share Units (RSUs). Marcell acquired 1166 Class A Ordinary Shares upon the vesting of an RSU award, with a nominal value of $0.01 per share, resulting in 9149.356 shares post-transaction. Additionally, 567.825 shares were withheld for tax payments, reducing the post-transaction holdings to 8581.531 shares. Another acquisition of 464 Class A Ordinary Shares occurred due to RSU vesting, leading to 9045.531 shares. Subsequently, 225.961 shares were withheld for taxes, leaving 8819.57 shares. Marcell also reported the disposition of 1166 RSUs and 464 RSUs, with remaining RSU holdings of 928. These transactions were executed under the Aon plc 2011 Incentive Compensation Plan.