Item 6. Exhibits Copy as markdown Exhibits — The exhibits filed with this report are listed on the attached Exhibit Index.
Signature
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
Aon plc (Registrant) May 1, 2026 By: /s/ David DeBrunner David DeBrunner SENIOR VICE PRESIDENT, GLOBAL CONTROLLER AND CHIEF ACCOUNTING OFFICER (Principal Accounting Officer and duly authorized officer of Registrant)
Exhibit Index
Exhibit Number Description of Exhibit 2.1 Agreement and Plan of Merger, by and among Aon plc, Randolph Acquisition Corp., Randolph Merger Sub LLC, NFP Intermediate Holdings A. Corp and NFP Parent Co, LLC, dated as of December 19, 2023 (incorporated by reference to Exhibit 2.1 to Aon’s Current Report on Form 8-K filed with the SEC on December 20, 2023). 3.1 Memorandum and Articles of Association of Aon plc ( i ncorporated by reference to Exhibit 3.1 to Aon’s Current Report on Form 8-K filed with the SEC on June 4, 2021) .10.1# Amended and Restated Employment Agreement, dated as of December 31, 2025, by and among Aon plc, Aon Corporation and Gregory C. Case (incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed with the SEC on January 2, 2026). 10.2# Performance Share Unit Agreement, dated as of December 31, 2025, by and between Aon plc and Gregory C. Case (incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K filed with the SEC on January 2, 2026). 10.3# Separation Agreement, dated as of January 6, 2026, by and between Aon Corporation and Eric Andersen (incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed with the SEC on January 7, 2026). 10.4# Employment Agreement, dated January 2, 2026, between Aon Corporation and Andy Marcell (incorporated by reference to Exhibit 10.60 to Aon’s Annual Report on Form 10-K filed with the SEC on February 13, 2026). 22.1* Subsidiary Guarantors and Issuers of Guaranteed Securities. 31.1* Certification of CEO. 31.2* Certification of CFO. 32.1** Certification of CEO Pursuant to section 1350 of Title 18 of the United States Code. 32.2** Certification of CFO Pursuant to section 1350 of Title 18 of the United States Code. 101* Interactive Data Files. The following materials are filed electronically with this Quarterly Report on Form 10-Q: 101.SCH XBRL Taxonomy Extension Schema Document 101.CAL XBRL Taxonomy Calculation Linkbase Document 101.DEF XBRL Taxonomy Definition Linkbase Document 101.PRE XBRL Taxonomy Presentation Linkbase Document 101.LAB XBRL Taxonomy Calculation Linkbase Document 104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) * Filed herewith ** Furnished herewith # Indicates a management contract or compensatory plan or arrangement
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