Aon CFO Edmund Reese Restricted Share Unit Vesting and Tax Withholding

On July 1, 2026, Aon plc Chief Financial Officer Edmund Reese reported the vesting of 3,975 restricted share units (RSUs) granted on July 1, 2024 under the company's 2011 Incentive Compensation Plan. The RSUs converted to Class A Ordinary Shares on a 1-for-1 basis, resulting in the acquisition of 3,975 shares at $0 per share. Concurrently, 2,198.112 shares were sold at $343.56 per share to cover tax obligations related to the vesting. Following these transactions, Reese's direct holdings decreased from 6,099.081 shares to 3,900.969 shares. The RSU award vests in three equal installments on the first through third anniversaries of the grant date, with this transaction representing the first vesting installment. The filing was signed by Colby Alexis pursuant to a power of attorney from Edmund Reese.