Aon plc Watch

from 8-K 9 pages January 6, 2026 Eric Andersen Aon Corporation United States Dear Eric: 1. General

from 8-K 10 pages Performance Share Unit Agreement Under the Aon plc 2011 Incentive Plan

from 8-K 11 pages Amended and Restated Employment Agreement

from 10-Q 1 page June 24, 2024 International Assignment Extension – Omaha, United States to London, United Kingdom Dear Mindy, This Letter Serves to Amend Your International Assignment Letter Dated March 23, 2023, Governing the Terms of Your International Assignment From Omaha, United States to London, United Kingdom (Your “International Assignment Letter”). Pursuant to This Letter, the Terms of Your International Assignment Shall Be Extended for an Additional One Year, Through June 30, 2025. Except as Otherwise Expressly Modified Herein, the Terms of the International Assignment Letter, and Your Acknowledgment and Acceptance Thereof, Shall Continue in Full Force and Effect. Please Confirm Acceptance of the Terms and Conditions of This Letter by Signing Below and Returning a Copy of the Signed Letter to Me. Sincerely, ………………………25…-.Jun-2024 Mindy Simon Aon Global Mobility | Assignment Extension Letter 1 of 1

from 10-Q 19 pages Mindy Simon Aon Service Corporation 23 March 2023 Dear Mindy, Long Term Assignment to the United Kingdom Further to Our Recent Discussions, I Am Writing to Invite You to Accept an Assignment to Aon Global Limited (“The Host”) on the Terms Set Out Below. Home Location: Omaha, United States Host Location: London, United Kingdom Global Mobility Advisor: Lucy Chittenden 1. Employment Status

from 10-Q 4 pages Aon Corporation (The “Company”) Is Pleased to Present in This Employment Offer Letter (This “Letter”) the Terms of Your Employment as Chief Operating Officer of Aon PLC. Subject to Your Acceptance of This Letter, Your Employment Pursuant to This Letter Will Be Deemed to Have Commenced as of the Mutually Agreed Upon Start Date in October 2022 (“Start Date”), but No Later Than October 31, 2022. General

from 8-K 12 pages Aon plc 2011 Incentive Plan (As Amended and Restated Effective April 18, 2025) Section 1 General

from 8-K 1 page Gregory Case Aon Corporation United States June 27, 2025 International Assignment Extension: Chicago, Illinois to London, England Dear Greg, This Letter Serves to Amend Your International Assignment Letter Effective July 1, 2016, Governing the Terms of Your International Assignment From Chicago, Illinois to London, England (Your “International Assignment Letter”). Pursuant to This Letter, the Term of Your International Assignment Shall Be Extended an Additional One Year, Through June 30, 2026. Except as Otherwise Expressly Modified Herein, the Terms of the International Assignment Letter, and Your Acknowledgment and Acceptance Thereof, Shall Continue in Full Force and Effect. Please Confirm Acceptance of the Terms and Conditions of This Letter by Signing Below and Returning a Copy of the Signed Letter to Me. Sincerely, /S/ Lisa Stevens Lisa Stevens Chief Administrative Officer Acknowledged and Agreed: /S/ Gregory Case Gregory Case

from 8-K 1 page Amendment to Employment Agreement

from 10-K 1 page Eighth Amendment to the Aon Supplemental Savings Plan

from 10-K 1 page Seventh Amendment to the Aon Deferred Compensation Plan This Seventh Amendment (“Amendment”) to the Aon Deferred Compensation Plan, as Amended and Restated Effective November 17, 2016 (The “Plan”), Is Adopted by Aon Corporation, a Delaware Corporation (The “Company”) and Wholly Owned Subsidiary of Aon PLC (“AON”), to Be Effective as Set Forth Below

from 10-K 2 pages First Amendment to the Aon Corporation Outside Director Corporate Bequest Plan

from 8-K 16 pages June 21, 2024 Christa Davies Aon Corporation United States Dear Christa

from 8-K 1 page Material contract

from 8-K 5 pages AON Corporation (The “Company”) Is Pleased to Present in This Employment Offer Letter (This “Letter”) the Terms of Your Employment as Chief Financial Officer of Aon plc. Subject to Your Acceptance of This Letter, Your Employment Pursuant to This Letter Will Be Deemed to Have Commenced as of July 1, 2024 (“Start Date”). General

from 10-Q 10 pages Restricted Stock Unit Agreement Under the Aon plc 2011 Incentive Plan

from 10-Q 19 pages Leadership Performance Program Performance Award Certificate in Connection With the Performance Cycle January 1, 2024 Through December 31, 2026

from 8-K 1 page Amendment to Employment Agreement

from 8-K 7 pages Aon plc Leadership Performance Program as Amended and Restated Effective January 1, 2024

from 10-K 115 pages Material contract