AON: Leadership change

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On August 17, 2026, Aon plc (the “Company”) announced that Edmund Reese will transition from his role as Executive Vice President and Chief Financial Officer of the Company effective August 17, 2026 (the “Transition Date”), to serve as a senior advisor to the Company from the Transition Date to August 16, 2027. The transition is pursuant to a Letter Agreement between Mr. Reese and Aon Corporation, a subsidiary of the Company, dated August 17, 2026, a copy of which is filed herewith as Exhibit 10.1 and incorporated herein by reference. Also on August 17, 2026, the Company announced that Nadin Virani, 49, would serve as interim Chief Financial Officer of the Company effective as of the Transition Date. Mr. Virani most recently served as Global Head of Corporate Planning and Analytics for the Company, a role he has held since January 2025. Mr. Virani joined Aon from Broadridge Financial Solutions (“Broadridge”), where he served as Head of Corporate Planning and Analytics since August 2022. Prior to joining Broadridge, Mr. Virani held a number of finance roles at American Express Company, most recently as Vice President and General Manager for the Delta Amex Co-Brand portfolio beginning in October 2018. As interim Chief Financial Officer, Mr. Virani’s current annual base salary will be increased by $50,000 per month until the end of the month in which a permanent Chief Financial Officer assumes the role. Mr. Virani will be eligible to earn an additional cash bonus equal to the total additional base salary earned during his term as interim Chief Financial Officer, payable within 30 days following the end of such term. Mr