144 0002062798 XXXXXXXX LIVE 0000315293 Aon plc 001-07933 15 GEORGES QUAY DUBLIN 2 L2 D02 VR98 35312666000 Goltermann Lori Officer Class A Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

5766 1871208.54 213576949 06/04/2026 NYSE Class A 02/26/2016 Open Market Purchase Issuer N 11 02/26/2016 Cash Class A 03/02/2017 Open Market Purchase Issuer N 3 03/02/2017 Cash Class A 02/11/2021 Restricted Stock Vesting Issuer N 127 02/11/2021 Compensation Class A 02/13/2021 Restricted Stock Vesting Issuer N 68 02/13/2021 Compensation Class A 02/16/2021 Dividend Reinvestment Issuer N 1 02/16/2021 Cash Class A 06/30/2021 ESPP Purchase Issuer N 1 06/30/2021 Cash Class A 12/31/2021 ESPP Purchase Issuer N 9 12/31/2021 Cash Class A 03/15/2024 Restricted Stock Vesting Issuer N 511 03/15/2024 Compensation Class A 05/16/2024 Dividend Reinvestment Issuer N 14 05/16/2024 Cash Class A 06/28/2024 ESPP Purchase Issuer N 29 06/28/2024 Cash Class A 12/31/2024 ESPP Purchase Issuer N 28 12/31/2024 Cash Class A 03/15/2025 Restricted Stock Vesting Issuer N 312 03/15/2025 Compensation Class A 06/30/2025 ESPP Purchase Issuer N 23 06/30/2025 Cash Class A 11/21/2025 Restricted Stock Vesting Issuer N 88 11/21/2025 Compensation Class A 12/31/2025 ESPP Purchase Issuer N 24 12/31/2025 Cash Class A 02/12/2026 Restricted Stock Vesting Issuer N 4224 02/12/2026 Compensation Class A 03/15/2026 Restricted Stock Vesting Issuer N 293 03/15/2026 Compensation Y 06/04/2026 /s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Lori M. Goltermann