Item 15. Exhibits and Financial Statement Schedules

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Item 15. Exhibits and Financial Statement Schedules

(a)(1) and (2). The following documents have been included in Part II, Item 8.
Report of Ernst & Young LLP, Independent Registered Public Accounting Firm (PCAOB ID: 42), on Financial Statements
Consolidated Statements of Financial Position — As of December 31, 2022 and 2021
Consolidated Statements of Income — Years Ended December 31, 2022, 2021, and 2020
Consolidated Statements of Comprehensive Income — Years Ended December 31, 2022, 2021 and 2020
Consolidated Statements of Shareholders’ Equity — Years Ended December 31, 2022, 2021 and 2020
Consolidated Statements of Cash Flows — Years Ended December 31, 2022, 2021 and 2020
Notes to Consolidated Financial Statements

The following document has been included in Part II, Item 9.

Report of Ernst & Young LLP, Independent Registered Public Accounting Firm, on Internal Control over Financial Reporting

All schedules for the Registrant and consolidated subsidiaries have been omitted because the required information is not present in amounts sufficient to require submission of the schedules or because the information required is included in the respective financial statements or notes thereto.

(a)(3). List of Exhibits (numbered in accordance with Item 601 of Regulation S-K)
Articles of Association.
3.1*Memorandum and Articles of Association of Aon plc - incorporated by reference to Exhibit 3.1 to Aon’s Current Report on Form 8-K filed June 4, 2021.
Instruments Defining the Rights of Security Holders, Including Indentures.
4.1*Second Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and The Bank of New York Mellon Trust Company, N.A. (amending and restating the Amended and Restated Indenture, dated April 2, 2012, amending and restating the Indenture, dated January 13, 1997) - incorporated by reference to Exhibit 4.1 to Aon’s Current Report on Form 8-K12B filed April 1, 2020.
4.2*Capital Securities Guarantee Agreement dated as of January 13, 1997 between Aon and The Bank of New York, as Guarantee Trustee — incorporated by reference to Exhibit 4.8 to Aon’s Registration Statement on Form S-4 (File No. 333-21237) filed on February 6, 1997.
4.3*Capital Securities Exchange and Registration Rights Agreement dated as of January 13, 1997 among Aon, Aon Capital A, Morgan Stanley & Co. Incorporated and Goldman, Sachs & Co. — incorporated by reference to Exhibit 4.10 to Aon’s Registration Statement on Form S-4 (File No. 333-21237) filed on February 6, 1997.
4.4*Debenture Exchange and Registration Rights Agreement dated as of January 13, 1997 among Aon, Aon Capital A, Morgan Stanley & Co. Incorporated and Goldman, Sachs & Co. — incorporated by reference to Exhibit 4.11 to Aon’s Registration Statement on Form S-4 (File No. 333-21237) filed on February 6, 1997.
4.5*Guarantee Exchange and Registration Rights Agreement dated as of January 13, 1997 among Aon, Aon Capital A, Morgan Stanley & Co. Incorporated and Goldman, Sachs & Co. — incorporated by reference to Exhibit 4.12 to Aon’s Registration Statement on Form S-4 (File No. 333-21237) filed on February 6, 1997.
4.6*Second Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and The Bank of New York Mellon Trust Company, N.A. (amending and restating the Amended and Restated Indenture, dated April 2, 2012, amending and restating the Indenture, dated September 10, 2010) - incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K12B filed April 1, 2020.
4.7*Form of 6.25% Senior Note due 2040 — incorporated by reference to Exhibit 4.4 to Aon’s Current Report on Form 8-K filed on September 10, 2010.
4.8*Indenture dated as of March 8, 2011, among Aon Finance N.S. 1, ULC, Aon Corporation and Computershare Trust Company of Canada. — incorporated by reference to Exhibit 4.1 to Aon’s Current Report on Form 8-K filed on March 8, 2011.
4.9*First Supplemental Indenture, dated April 2, 2012, among Aon Finance N.S. 1, ULC, Aon Corporation, Aon plc and Computershare Trust Company of Canada (supplementing the Indenture, dated March 8, 2011) - incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K12B filed April 2, 2012.
4.10*Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and The Bank of New York Mellon Trust Company, N.A. (amending and restating the Indenture, dated December 12, 2012) - incorporated by reference to Exhibit 4.3 to Aon’s Current Report on Form 8-K12B filed April 1, 2020.
4.11*Form of 4.250% Senior Note Due 2042 - incorporated by reference to Exhibit 4.6 to Aon’s Registration Statement on Form S-4 (File No. 333-187637) filed on March 29, 2013.
4.12*Second Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and The Bank of New York Mellon Trust Company, N.A. (amending and restating the Amended and Restated Indenture, dated May 20, 2015, amending and restating the Indenture, dated May 24, 2013) - incorporated by reference to Exhibit 4.4 to Aon’s Current Report on Form 8-K12B filed April 1, 2020.
4.13*Form of 4.45% Senior Note due 2043 — incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed on May 24, 2013.
4.14*Form of 4.00% Senior Note due 2023 — incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed on November 26, 2013.
4.15*Form of 3.500% Senior Note due 2024 - incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed on May 27, 2014.
4.16*Form of 4.600% Senior Note due 2044 - incorporated by reference to Exhibit 4.3 to Aon’s Current Report on Form 8-K filed on May 27, 2014.
4.17*Form of 4.750% Senior Note due 2045 - incorporated by reference to Exhibit 4.1 to Aon’s Current Report on Form 8-K filed on May 20, 2015.
4.18*Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and The Bank of New York Mellon Trust Company, N.A. (amending and restating the Indenture, dated November 13, 2015) - incorporated by reference to Exhibit 4.5 to Aon’s Current Report on Form 8-K12B filed April 1, 2020.
4.19*Form of 3.875% Senior Note due 2025 - incorporated by reference to Exhibit 1.1 to Aon’s Current Report on Form 8-K filed on February 29, 2016.
4.20*Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and The Bank of New York Mellon Trust Company, N.A. (amending and restating the Indenture, dated December 3, 2018) - incorporated by reference to Exhibit 4.6 to Aon’s Current Report on Form 8-K12B filed April 1, 2020.
4.21*Form of 4.500% Senior Note due 2028 - incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed December 3, 2018.
4.22*Form of 3.750% Senior Note due 2029, incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed May 2, 2019.
4.23*Form of 2.200% Senior Note due 2022, incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed November 15, 2019.
4.24*Form of 2.800% Senior Note due 2030 - incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed May 15, 2020.
4.25Description of Securities of Aon plc that are registered under Section 12 of the Securities Exchange Act of 1934, as amended.
4.26*First Indenture Supplement, dated August 23, 2021, among Aon Corporation, Aon Global Holdings plc, Aon Global Limited, Aon plc and The Bank of New York Mellon Trust Company, N.A., as trustee – incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed August 23, 2021.
4.27*Form of 2.050% Senior Note due 2031 – incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed August 23, 2021.
4.28*Form of 2.900% Senior Note due 2051 – incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed August 23, 2021.
4.29*Second Indenture Supplement, dated December 2, 2021, among Aon Corporation, Aon Global Holdings plc, Aon Global Limited, Aon plc and The Bank of New York Mellon Trust Company, N.A., as trustee – incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed December 2, 2021.
4.30*Form of 2.600% Senior Note due 2031 – incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed December 2, 2021.
4.31*Third Indenture Supplement, dated February 28, 2022, among Aon Corporation, Aon Global Holdings plc, Aon Global Limited, Aon plc and The Bank of New York Mellon Trust Company, N.A., as trustee – incorporated by reference to Exhibit 4.2 to Aon’ Current Report on Form 8-K filed February 28, 2022.
4.32*Form of 2.850% Senior Note due 2027 – incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed February 28, 2022.
4.33*Form of 3.900% Senior Note due 2052 – incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed February 28, 2022.
4.34*Fourth Indenture Supplement, dated September 12, 2022, among Aon Corporation, Aon Global Holdings plc, Aon Global Limited, Aon plc and The Bank of New York Mellon Trust Company, N.A., as trustee – incorporated by reference to Exhibit 4.2 to Aon’ Current Report on Form 8-K filed September 12, 2022.
4.35*Form of 5.000% Senior Note due 2032 – incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed September 12, 2022.
Material Contracts.
10.1*$1,000,000,000 Credit Agreement, dated September 28, 2021, among Aon plc, Aon Corporation, Aon UK Limited, Aon Global Holdings plc and Aon Global Limited with Citibank, N.A., as administrative agent, the lenders party thereto, HSBC Bank USA, National Association and Morgan Stanley Senior Funding, Inc., as syndication agents, and Citibank, N.A., HSBC Securities (USA) and Morgan Stanley Senior Funding, Inc., as joint lead arrangers and joint bookrunners - incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed on September 30, 2021.
10.2*$400,000,000 Five-Year Credit Agreement, dated October 19, 2017 (the “2017 Credit Agreement”), among Aon plc, Aon Corporation, Citibank, N.A., as administrative agent, the lenders party thereto, HSBC Bank USA, National Association, as syndication agent, and Citigroup Global Markets, Inc. and HSBC Securities (USA) Inc., as joint lead arrangers and joint bookrunners - incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed October 20, 2017.
10.3*Form of Notice of Extension of the 2017 Credit Agreement - incorporated by reference to Exhibit 10.7 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2019.
10.4*Lender Assumption Agreement, dated February 27, 2020, among Aon plc, Citibank, N.A. and the parties thereto, with respect to the 2017 Credit Agreement - incorporated by reference to Exhibit 10.12 to Aon’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2020.
10.5*Waiver and Amendment No. 1 to the 2017 Credit Agreement, dated April 1, 2020, among Aon plc, Aon Corporation, Citibank, N.A. and the lenders party thereto - incorporated by reference to Exhibit 10.11 to Aon’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2020.
10.6*Amendment No. 2 to the 2017 Credit Agreement, dated September 28, 2021, among Aon plc, Aon Corporation, Aon Global Holdings plc, Aon Global Limited, Citibank, N.A., as administrative agent, and the lenders party thereto - incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K filed on September 30, 2021.
10.7*Amendment No. 3 to the 2017 Credit Agreement, dated October 19, 2022, among Aon plc, Aon Corporation, Aon Global Holdings plc, Aon Global limited, Citibank, N.A., as administrative agent, and the lenders party thereto – incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed on October 21, 2022.
10.8*Purchase Agreement, dated February 9, 2017, between Aon plc and Tempo Acquisition, LLC - incorporated by reference to Exhibit 2.1 to Aon’s Current Report on Form 8-K filed February 10, 2017.
10.9*Amendment No. 1 to Purchase Agreement, dated April 17, 2017, between Aon plc and Tempo Acquisition, LLC - incorporated by reference to Exhibit 10.2 to Aon’s Quarterly Report on 10-Q for the quarter ended March 31, 2017.
10.10*#Deed of Assumption of Aon plc, dated April 1, 2020 - incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K12B filed April 1, 2020.
10.11*#Deed of Assumption of Aon Global Limited, dated April 2, 2012 - incorporated by reference to Exhibit 10.7 to Aon’s Current Report on Form 8-K12B filed April 2, 2012.
10.12*#Aon Corporation Outside Director Corporate Bequest Plan (as amended and restated, effective January 1, 2010) - incorporated by reference to Exhibit 10.1 to Aon’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2010.
10.13*#Amended and Restated Aon Stock Incentive Plan - incorporated by reference to Exhibit 10.2 to the Current Report on Form 8-K filed May 24, 2006.
10.14*#First Amendment to the Amended and Restated Aon Stock Incentive Plan - incorporated by reference to Exhibit 10(au) to Aon’s Annual Report on Form 10-K for the year ended December 31, 2006.
10.15*#Second Amendment to the Amended and Restated Aon Stock Incentive Plan, dated April 2, 2012 - incorporated by reference to Exhibit 10.10 to Aon’s Current Report on Form 8-K12B filed April 2, 2012.
10.16*#Aon Stock Award Plan (as amended and restated through February 2000) - incorporated by reference to Exhibit 10(a) to Aon’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000.
10.17*#First Amendment to the Aon Stock Award Plan - incorporated by reference to Exhibit 10(as) to Aon’s Annual Report on Form 10-K for the year ended December 31, 2006.
10.18*#Aon plc 2011 Incentive Plan (as amended and restated, effective March 29, 2019) - incorporated by reference to Exhibit 10.1 to Aon’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2019.
10.19*#First Amendment to the Aon plc 2011 Incentive Plan, effective September 13, 2021 - incorporated by reference to Exhibit 10.9 to Aon’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021.
10.20*#Aon plc Leadership Performance Program (as amended and restated, effective January 1, 2021) - incorporated by reference to Exhibit 10.20 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2021.
10.21*#Aon plc Senior Executive Combined Severance and Change in Control Plan (as amended and restated, effective June 21, 2019) - incorporated by reference to Exhibit 10.2 to Aon’s Quarterly Report on Form 10-Q for the quarter end June 30, 2019.
10.22*#First Amendment to the Aon plc Amended and Restated Senior Executive Combined Severance and Change in Control Plan, effective September 30, 2021 - incorporated by reference to Exhibit 10.10 to Aon’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021.
10.23*#Aon plc Senior Executive Incentive Compensation Plan (as amended and restated, effective January 1, 2021) - incorporated by reference to Exhibit 10.2 to Aon’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2021.
10.24*#Form of Deed of Indemnity of Aon plc - incorporated by reference to Exhibit 10.4 to Aon’s Current Report on Form 8-K12B filed April 1, 2020.
10.25*#Form of Deed of Indemnity for Directors of Aon Global Limited - incorporated by reference to Exhibit 10.4 to Aon’s Current Report on Form 8-K12B filed April 2, 2012.
10.26*#Form of Deed of Indemnity for Gregory C. Case - incorporated by reference to Exhibit 10.5 to Aon’s Current Report on Form 8-K12B filed April 2, 2012.
10.27*#Form of Deed of Indemnity for Executive Officers of Aon plc - incorporated by reference to Exhibit 10.6 to Aon’s Current Report on Form 8-K12B filed April 2, 2012.
10.28*#Form of Service as a Non-Executive Director Agreement - incorporated by reference to Exhibit 10.2 to Aon’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2016.
10.29*#Amended and Restated Employment Agreement, dated January 16, 2015, 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 January 23, 2015.
10.30*#Amendment to Employment Agreement, dated April 20, 2018, among Aon plc, Aon Corporation and Gregory C. Case - incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K filed April 25, 2018.
10.31*#Amendment to Employment Agreement, dated May 10, 2018, 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 on May 15, 2018.
10.32*#Amendment to Employment Agreement, dated July 26, 2021, among Aon plc, Aon Corporation and Gregory C. Case - incorporated by reference to Exhibit 10.3 to Aon’s Current Report on Form 8-K filed on July 26, 2021.
10.33*#Amended and Restated Change in Control Agreement, dated November 13, 2009, between Aon Corporation and Gregory C. Case - incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K filed on November 17, 2009.
10.34*#Amendment to the Amended and Restated Change in Control Agreement, dated April 27, 2016, between Aon plc and Gregory C. Case - incorporated by reference to Exhibit 10.11 on Aon’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2016.
10.35*#International Assignment Letter, effective July 1, 2016, between Aon Corporation and Gregory C. Case - incorporated by reference to Exhibit 10.1 to Aon’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2016.
10.36*#Amendment to International Assignment Letter, dated June 25, 2018, with Gregory C. Case - incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K filed on June 27, 2018.
10.37*#Amendment to International Assignment Letter, dated June 25, 2019, with Gregory C. Case - incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K filed on June 25, 2019.
10.38*#Amendment to International Assignment Letter, dated June 19, 2020, between Aon Corporation and Greg C. Case - incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K filed June 25, 2020.
10.39*#Amendment to International Assignment Letter, dated July 8, 2021, between Aon Corporation and Gregory C. Case - incorporated by reference to Exhibit 10.2 to Aon’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2021.
10.40*#Amendment to International Assignment Letter, dated June 21, 2022, between Aon Corporation and Gregory C. Case – incorporated by reference to exhibit 10.2 to Aon’s Current Report on Form 8-K filed June 23, 2022.
10.41*#Employment Agreement dated as of October 3, 2007 between Aon Corporation and Christa Davies - incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed on October 3, 2007.
10.42*#Amendment effective as of March 27, 2012 to Employment Agreement between Aon Corporation and Christa Davies dated as of October 3, 2007 - incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed on March 30, 2012.
10.43*#Amendment to Employment Agreement, dated February 20, 2015, between Aon Corporation and Christa Davies - incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed on February 26, 2015.
10.44*#Amendment to Employment Agreement, dated April 19, 2018, between Aon Corporation and Christa Davies - incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed on April 25, 2018.
10.45*#Amendment to Employment Agreement, dated July 26, 2021, between Aon Corporation and Christa Davies - incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K filed on July 26, 2021.
10.46*#International Assignment Letter, effective July 1, 2016, between Aon Corporation and Christa Davies - incorporated by reference to Exhibit 10.2 to Aon’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2016
10.47*#Amendment to International Assignment Letter, dated June 25, 2018, between Aon Corporation and Christa Davies - incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed on June 27, 2018.
10.48*#Amendment to International Assignment Letter, dated June 25, 2019, between Aon Corporation and Christa Davies, incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed on June 25, 2019.
10.49*#Amendment to International Assignment Letter, dated June 19, 2020, between Aon Corporation and Christa Davies - incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed June 25, 2020.
10.50*#Amendment to International Assignment Letter, dated July 8, 2021, between Aon Corporation and Christa Davies - incorporated by reference to Exhibit 10.1 to Aon’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2021.
10.51*#Amendment to International Assignment Letter, dated June 21, 2022, between Aon Corporation and Christa Davies – incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed June 23, 2022.
10.52*#Letter Agreement, dated July 16, 2019, between Aon Corporation and Darren Zeidel - incorporated by reference to Exhibit 10.50 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2021
10.53*#Letter Agreement, dated October 22, 2019, between Aon Corporation and Lisa Stevens - incorporated by reference to Exhibit 10.51 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2021.
10.54*#Letter Agreement, dated May 11, 2018, by and between Aon Corporation and Eric Andersen- incorporated by reference to Exhibit 10.3 to Aon’s Current Report on Form 8-K filed on May 15, 2018.
10.55*#Amended and Restated Aon Deferred Compensation Plan, dated November 16, 2016 - incorporated by reference to the Annual Report on Form 10-K for the year ended December 31, 2016.
10.56*#First Amendment to the Aon Deferred Compensation Plan, effective December 8, 2016, incorporated by reference to the Annual Report on Form 10-K for the year ended December 31, 2016.
10.57*#Second Amendment to the Amended and Restated Aon Deferred Compensation Plan, effective April 19, 2017 - incorporated by reference to Exhibit 10.1 to Aon’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2017.
10.58*#Third Amendment to the Amended and Restated Aon Deferred Compensation Plan, effective December 27, 2019 - incorporated by referenced to Exhibit 10.51 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2019.
10.59*#Fourth Amendment to the Amended and Restated Aon Deferred Compensation Plan, effective May 7, 2020 - incorporated by reference to Exhibit 10.60 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2020.
10.60*#Fifth Amendment to the Amended and Restated Aon Deferred Compensation Plan, effective October 1, 2021 - incorporated by reference to Exhibit 10.64 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2021.
10.61#Sixth Amendment to the Amended and Restated Aon Deferred Compensation Plan, effective June 30, 2022.
10.62*#Aon plc Global Share Purchase Plan, amended and restated effective January 1, 2021 - incorporated by reference to Exhibit 10.61 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2020.
10.63*#Form of Restricted Stock Unit Agreement, incorporated by reference to Exhibit 10.2 to Aon’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019.
10.64*#Aon Supplemental Savings Plan, amended and restated effective January 1, 2017, incorporated by reference to Exhibit 10.52 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2016.
10.65*#First Amendment to the Aon Supplemental Savings Plan, effective March 30, 2017, incorporated by reference to Exhibit 10.52 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2017.
10.66*#Second Amendment to the Aon Supplemental Savings Plan, effective December 31, 2018 - incorporated by reference to Exhibit 10.58 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2019.
10.67*#Third Amendment to the Aon Supplemental Savings Plan, effective December 27, 2019 - incorporated by reference to Exhibit 10.59 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2019.
10.68*#Fourth Amendment to the Aon Supplemental Savings Plan, effective May 1, 2020 - incorporated by reference to Exhibit 10.68 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2020.
10.69*#Fifth Amendment to the Aon Supplemental Savings Plan, effective January 1, 2021 – incorporated by reference to Exhibit 10.69 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2020.
10.70*#Sixth Amendment to the Aon Supplemental Savings Plan, effective October 1, 2021 - incorporated by reference to Exhibit 10.74 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2021.
10.71#Seventh Amendment to the Aon Supplemental Savings Plan, effective June 30, 2022.
10.72*#Aon Corporation Excess Benefit Plan (as amended and restated, effective January 1, 2009) and the following amendments thereto: First Amendment, dated January 1, 2009, Second Amendment, dated December 16, 2009, Third Amendment, dated December 31, 2018, and Fourth Amendment, dated December 27, 2019 - incorporated by reference to Exhibit 10.60 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2019.
10.73*#Master Assignment, Assumption and Amendment Deed to Change in Control Arrangements of Aon plc, dated April 1, 2020 - incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K12B filed April 1, 2020.
10.74*#Master Amendment to the Remaining Plans, dated April 1, 2020, of Aon Corporation - incorporated by reference to Exhibit 10.3 to Aon’s Current Report on Form 8-K12B filed April 1, 2020.
10.75*Form of Irrevocable Director Undertaking - incorporated by reference to Exhibit 10.1 to Aon’s Form 8-K filed March 10, 2020.
10.76*#Form of Acknowledgment of Tax Equalization Process Letter Agreement with Non-Employee Directors - incorporated by reference to Exhibit 10.74 to Aon’s Annual Report on Form 10-K for the year ended December 31, 2020.
Subsidiaries of the Registrant.
21.1List of Subsidiaries of Aon.
Subsidiary Guarantors and Issuers of Guaranteed Securities and Affiliates Whose Securities Collateralize Securities of the Registrant
22.1Subsidiary Guarantors and Issuers of Guaranteed Securities
Consents of Experts and Counsel.
23Consent of Ernst & Young LLP.
Rule 13a-14(a)/15d-14(a) Certifications.
31.1.Rule 13a-14(a) Certification of Chief Executive Officer of Aon in accordance with Section 302 of the Sarbanes-Oxley Act of 2002.
31.2.Rule 13a-14(a) Certification of Chief Financial Officer of Aon in accordance with Section 302 of the Sarbanes-Oxley Act of 2002.
Section 1350 Certifications.
32.1.Section 1350 Certification of Chief Executive Officer of Aon in accordance with Section 906 of the Sarbanes-Oxley Act of 2002.
32.2.Section 1350 Certification of Chief Financial Officer of Aon in accordance with Section 906 of the Sarbanes-Oxley Act of 2002.
XBRL Exhibits.
Interactive Data Files. The following materials are filed electronically with this Annual Report on Form 10-K:
101.SCHInline XBRL Taxonomy Extension Schema Document.
101.CALInline XBRL Taxonomy Calculation Linkbase Document.
101.DEFInline XBRL Taxonomy Definition Linkbase Document.
101.PREInline XBRL Taxonomy Presentation Linkbase Document.
101.LABInline XBRL Taxonomy Calculation Linkbase Document.
104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)*
  • Document has been previously filed with the SEC and is incorporated herein by reference herein. Unless otherwise indicated, such document was filed under Commission File Number 001-07933.

Indicates a management contract or compensatory plan or arrangement.

The registrant agrees to furnish to the SEC upon request a copy of (1) any long-term debt instruments that have been omitted pursuant to Item 601(b)(4)(iii)(A) of Regulation S-K, and (2) any schedules omitted with respect to any material plan of acquisition, reorganization, arrangement, liquidation or succession set forth above.

Item16. Form 10-K Summary

None.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) 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
By:/s/ GREGORY C. CASE
Gregory C. Case, Chief Executive Officer
Date:February 17, 2023

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

SignatureTitleDate
/s/ GREGORY C. CASEChief Executive Officer and Director (Principal Executive Officer)February 17, 2023
Gregory C. Case
/s/ LESTER B. KNIGHTNon-Executive Chairman and DirectorFebruary 17, 2023
Lester B. Knight
/s/ JIN-YONG CAIDirectorFebruary 17, 2023
Jin-Yong Cai
/s/ JEFFREY C. CAMPBELLDirectorFebruary 17, 2023
Jeffrey C. Campbell
/s/ FULVIO CONTIDirectorFebruary 17, 2023
Fulvio Conti
/s/ CHERYL A. FRANCISDirectorFebruary 17, 2023
Cheryl A. Francis
/s/ ADRIANA KARABOUTISDirectorFebruary 17, 2023
Adriana Karaboutis
/s/ J. MICHAEL LOSHDirectorFebruary 17, 2023
J. Michael Losh
/s/ RICHARD C. NOTEBAERTDirectorFebruary 17, 2023
Richard C. Notebaert
/s/ GLORIA SANTONADirectorFebruary 17, 2023
Gloria Santona
/s/ BYRON SPRUELLDirectorFebruary 17, 2023
Byron Spruell
/s/ CAROLYN Y. WOODirectorFebruary 17, 2023
Carolyn Y. Woo
/s/ CHRISTA DAVIESChief Financial Officer (Principal Financial Officer)February 17, 2023
Christa Davies
/s/ MICHAEL NELLERGlobal Controller (Principal Accounting Officer)February 17, 2023
Michael Neller

Previous: Item 14. Principal Accountant Fees and Services