Aon plc. Watch

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

from 10-K 140 pages Material contract

from 10-K 135 pages Material contract

from 10-Q 13 pages Performance Share Unit Agreement Under Aon plc 2011 Incentive Plan

from 10-Q 12 pages Employment Agreement

from 10-Q 4 pages Guaranty Supplement

from 10-Q 4 pages Guaranty Supplement

from 10-Q 117 pages Material contract

from 10-Q 12 pages Aon plc 2011 Incentive Plan (As Amended and Restated Effective April 19, 2023) Section 1 General

from 8-K 14 pages Aon plc 2011 Incentive Plan (As Amended and Restated Effective April 19, 2023) Section 1 General Section 2 Defined Terms

from 8-K 1 page Gregory Case Aon Corporation United States June 16, 2023 International Assignment: 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, 2024. 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 People Officer Acknowledged and Agreed: /S/ Gregory Case Gregory Case

from 8-K 1 page Christa Davies Aon Corporation United States June 16, 2023 International Assignment: Chicago, Illinois to London, England Dear Christa, 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, 2024. 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 People Officer Acknowledged and Agreed: /S/ Christa Davies Christa Davies

from 10-Q 11 pages Restricted Stock Unit Agreement Under Amended and Restated Aon plc 2011 Incentive Plan

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

from 10-K 1 page Amendment to the Aon Deferred Compensation Plan

from 8-K 1 page Gregory Case Aon Corporation United States June 21, 2022 International Assignment: 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, 2023. 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 People Officer Acknowledged and Agreed: /S/ Gregory Case Gregory Case