Item 10. Directors, Executive Officers and Corporate Governance

Information relating to Aon’s directors is set forth under the heading “Proposal 1 — Resolutions Regarding the Election of Directors” in the Proxy Statement for the 2026 Annual General Meeting of Shareholders (the “Proxy Statement”) and is incorporated herein by reference. Information relating to Aon’s executive officers is set forth in Part I of this report and is incorporated herein by reference. The remaining information required by this item is set forth under the headings “Director Nominee Bios” and “Corporate Governance” in the Proxy Statement, and all such information is incorporated herein by reference.

We have adopted a code of ethics that applies to the Company’s directors, officers, and employees, including the Chief Executive Officer, Chief Financial Officer, and Global Controller and Chief Accounting Officer and other persons performing similar functions. The text of our code of ethics, which we call our Code of Business Conduct, is available on our website as disclosed in Part 1 of this report. We will provide a copy of the code of ethics without charge upon request to the Company Secretary, 15 George’s Quay, Dublin 2, Ireland. We will disclose on our website any amendment to or waiver from our Code of Business Conduct on behalf of any of our executive officers or directors.

The Board has adopted an insider trading policy which is available on the Company’s website, described in the Company’s code of business conduct (which is also available on the Company’s website) and attached to this report as Exhibit 19.1. The Company’s insider trading policy specifically prohibits all directors and employees from engaging in short sales, publicly traded options, puts and calls, forward sale contracts, and other swap, hedging and derivative transactions relating to our securities. The policy also specifically prohibits our executive officers and directors from holding our securities in margin accounts or pledging our securities as collateral for a loan.

The other information required by this Item 10 is incorporated by reference to the definitive Proxy Statement for our 2026 Annual Meeting of Shareholders, which will be filed with the SEC no later than 120 days after December 31, 2025.