AON 10-K Annual Report Dec. 31, 2020 | Alphaminr
ALPHAMINR

AON 10-K Fiscal year ended Dec. 31, 2020

Balance Sheet
Cash Flow
Income Statement
Debt
AON PLC
10-Ks and 10-Qs
10-Q
 		Quarter ended Sept. 30, 2024
10-Q
 		Quarter ended June 30, 2024
10-Q
 		Quarter ended March 31, 2024
10-K
 		Fiscal year ended Dec. 31, 2023
10-Q
 		Quarter ended Sept. 30, 2023
10-Q
 		Quarter ended June 30, 2023
10-Q
 		Quarter ended March 31, 2023
10-K
 		Fiscal year ended Dec. 31, 2022
10-Q
 		Quarter ended Sept. 30, 2022
10-Q
 		Quarter ended June 30, 2022
10-Q
 		Quarter ended March 31, 2022
10-K
 		Fiscal year ended Dec. 31, 2021
10-Q
 		Quarter ended Sept. 30, 2021
10-Q
 		Quarter ended June 30, 2021
10-Q
 		Quarter ended March 31, 2021
10-K
 		Fiscal year ended Dec. 31, 2020
10-Q
 		Quarter ended Sept. 30, 2020
10-Q
 		Quarter ended June 30, 2020
10-Q
 		Quarter ended March 31, 2020
10-K
 		Fiscal year ended Dec. 31, 2019
10-Q
 		Quarter ended Sept. 30, 2019
10-Q
 		Quarter ended June 30, 2019
10-Q
 		Quarter ended March 31, 2019
10-K
 		Fiscal year ended Dec. 31, 2018
10-Q
 		Quarter ended Sept. 30, 2018
10-Q
 		Quarter ended June 30, 2018
10-Q
 		Quarter ended March 31, 2018
10-K
 		Fiscal year ended Dec. 31, 2017
10-Q
 		Quarter ended Sept. 30, 2017
10-Q
 		Quarter ended June 30, 2017
10-Q
 		Quarter ended March 31, 2017
10-K
 		Fiscal year ended Dec. 31, 2016
10-Q
 		Quarter ended Sept. 30, 2016
10-Q
 		Quarter ended June 30, 2016
10-Q
 		Quarter ended March 31, 2016
10-K
 		Fiscal year ended Dec. 31, 2015
10-Q
 		Quarter ended Sept. 30, 2015
10-Q
 		Quarter ended June 30, 2015
10-Q
 		Quarter ended March 31, 2015
10-K
 		Fiscal year ended Dec. 31, 2014
10-Q
 		Quarter ended Sept. 30, 2014
10-Q
 		Quarter ended June 30, 2014
10-Q
 		Quarter ended March 31, 2014
10-K
 		Fiscal year ended Dec. 31, 2013
10-Q
 		Quarter ended Sept. 30, 2013
10-Q
 		Quarter ended June 30, 2013
10-Q
 		Quarter ended March 31, 2013
10-K
 		Fiscal year ended Dec. 31, 2012
10-Q
 		Quarter ended Sept. 30, 2012
10-Q
 		Quarter ended June 30, 2012
10-Q
 		Quarter ended March 31, 2012
10-K
 		Fiscal year ended Dec. 31, 2011
10-Q
 		Quarter ended Sept. 30, 2011
10-Q
 		Quarter ended June 30, 2011
10-Q
 		Quarter ended March 31, 2011
10-K
 		Fiscal year ended Dec. 31, 2010
10-Q
 		Quarter ended Sept. 30, 2010
10-Q
 		Quarter ended June 30, 2010
10-Q
 		Quarter ended March 31, 2010
10-K
 		Fiscal year ended Dec. 31, 2009
PROXIES
DEF 14A
 		Filed on April 29, 2024
DEF 14A
 		Filed on April 28, 2023
DEF 14A
 		Filed on April 29, 2022
DEF 14A
 		Filed on April 15, 2021
DEF 14A
 		Filed on April 24, 2020
DEF 14A
 		Filed on Dec. 20, 2019
DEF 14A
 		Filed on April 26, 2019
DEF 14A
 		Filed on April 27, 2018
DEF 14A
 		Filed on April 28, 2017
DEF 14A
 		Filed on April 29, 2016
DEF 14A
 		Filed on April 24, 2015
DEF 14A
 		Filed on April 28, 2014
DEF 14A
 		Filed on April 1, 2013
DEF 14A
 		Filed on April 18, 2012
DEF 14A
 		Filed on April 8, 2011
DEF 14A
 		Filed on April 7, 2010
TABLE OF CONTENTS
Part IItem 1. BusinessItem 1A. Risk FactorsItem 1B. Unresolved Staff CommentsItem 2. PropertiesItem 3. Legal ProceedingsItem 4. Mine Safety DisclosurePart IIItem 5. Market For Registrant S Common Equity, Related Stockholder Matters and Issuer Purchases Of Equity SecuritiesItem 6. Selected Financial DataItem 7. Management S Discussion and Analysis Of Financial Condition and Results Of OperationsItem 7A. Quantitative and Qualitative Disclosures About Market RiskItem 8. Financial Statements and Supplementary DataItem 9. Changes in and Disagreements with Accountants on Accounting and Financial DisclosureItem 9A. Controls and ProceduresItem 9B. Other InformationPart IIIItem 10. Directors, Executive Officers and Corporate GovernanceItem 11. Executive CompensationItem 12. Security Ownership Of Certain Beneficial Owners and Management and Related Stockholder MattersItem 13. Certain Relationships and Related Transactions, and Director IndependenceItem 14. Principal Accountant Fees and ServicesPart IVItem 15. Exhibits and Financial Statement Schedules

Exhibits

2.1* Business Combination Agreement, dated March 9, 2020, between Aon plc and Willis Towers Watson Public Limited Company (WTW) - incorporated by reference to Exhibit 2.1 to Aons Current Report on Form 8-K filed March 10, 2020. 2.2* Appendix 3 to the Rule 2.5 Announcement, dated March 9, 2020 - incorporated by reference to Exhibit 2.2 to Aons Current Report on Form 8-K filed March 10, 2020. 2.3* Expenses Reimbursement Agreement, dated March 9, 2020, between Aon plc and WTW - incorporated by reference to Exhibit 2.3 to Aons Current Report on Form 8-K filed March 10, 2020. 2.4* Assignment Agreement, dated April 2, 2020, between Aon plc and Aon plc (UK) - incorporated by reference to Exhibit 2.1 to Aons Current Report on Form 8-K filed April 2, 2020. 2.5* Amendment No. 1 to the Business Combination Agreement, dated October 30, 2020, between Aon plc and WTW - incorporated by reference to Exhibit 2.1 to Aons Current Report on Form 8-K filed October 30, 2020. 3.1* Memorandum and Articles of Association of Aon plc - incorporated by reference to Exhibit 3.1 to Aons Current Report on Form 8-K12B filed April 1, 2020. 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 Aons Current Report on Form 8-K12B filed April 1, 2020. 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 Aons Current Report on Form 8-K12B filed April 1, 2020. 4.7* Form of 6.25% Senior Note due 2040 incorporated by reference to Exhibit4.4 to Aons Current Report on Form8-K filed on September10, 2010. 4.8* Indenture dated as of March8, 2011, among Aon Finance N.S. 1,ULC, Aon Corporation and Computershare Trust Company of Canada. incorporated by reference to Exhibit4.1 to Aons Current Report on Form8-K filed on March8, 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 Aons 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 Aons 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 Aons 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 Aons Current Report on Form 8-K12B filed April 1, 2020. 4.13* Formof 4.45% Senior Note due 2043 incorporated by reference to Exhibit 4.2 to Aons Current Report on Form 8-K filed on May 24, 2013. 4.14* Formof 4.00% Senior Note due 2023 incorporated by reference to Exhibit 4.2 to Aons 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 Aons 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 Aons 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 Aons 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 Aons Current Report on Form 8-K12B filed April 1, 2020. 4.19* Form of 2.800% Senior Note due 2021 - incorporated by reference to Exhibit 4.2 to Aons Current Report on Form 8-K filed on November 13, 2015. 4.20* Form of 3.875% Senior Note due 2025 - incorporated by reference to Exhibit 1.1 to Aons Current Report on Form 8-K filed on February 29, 2016. 4.21* 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 Aons Current Report on Form 8-K12B filed April 1, 2020. 4.22* Form of 4.500% Senior Note due 2028 - incorporated by reference to Exhibit 4.2 to Aons Current Report on Form 8-K filed December 3, 2018. 4.23* Form of 3.750% Senior Note due 2029, incorporated by reference to Exhibit 4.2 to Aons Current Report on Form 8-K filed May 2, 2019. 4.24* Form of 2.200% Senior Note due 2022, incorporated by reference to Exhibit 4.2 to Aons Current Report on Form 8-K filed November 15, 2019. 4.25* Form of 2.800% Senior Note due 2030 - incorporated by reference to Exhibit 4.2 to Aons Current Report on Form 8-K filed May 15, 2020. 4.26* Description of Securities of Aon plc that are registered under Section 12 of the Securities Exchange Act of 1934, as amended - incorporated by reference to Exhibit 4.7 to Aons Current Report on Form 8-K12B filed April 1, 2020. 10.1* $900,000,000 Five-Year Credit Agreement among Aon plc, Aon Corporation and Aon UK Limited with Citibank, N.A., as administrative agent, the lenders party thereto, Bank of America, N.A. and Morgan Stanley Senior Funding, Inc., as syndication agents, and Citigroup Global Markets, Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Morgan Stanley Senior Funding, Inc., as joint lead arrangers and joint book managers entered into on February 2, 2015, - incorporated by reference to Exhibit 10.1 to Aons Current Report on Form 8-K filed on February 4, 2015. 10.2* Form of Notice of Extension of the 2015 Credit Agreement - incorporated by reference to Exhibit 10.1 to Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2016. 10.3* Form of Notice of Second Extension of the 2015 Credit Agreement - incorporated by reference to Exhibit 10.1 to Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2019. 10.4* Amendment No. 1 to the 2015 Credit Agreement, dated June 21, 2017, among Aon plc, Aon Corporation, Aon UK Limited, and the banks, financial institutions and other institutional lenders party thereto - incorporated by reference to Exhibit 10.3 to Aons Quarterly Report on 10-Q for the quarter ended June 30, 2017. 10.5* Waiver and Amendment No. 2 to the 2015 Credit Agreement, dated April 1, 2020, among Aon plc, Aon Corporation, Aon UK Limited, Citibank, N.A. and the lenders party thereto - incorporated by reference to Exhibit 10.10 to Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2020. 10.6* $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 Aons Current Report on Form 8-K filed October 20, 2017. 10.7* Form of Notice of Extension of the 2017 Credit Agreement - incorporated by reference to Exhibit 10.7 to Aons Annual Report on Form 10-K for the year ended December 31, 2019. 10.8* 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 Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2020. 10.9* 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 Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2020. 10.10*# Purchase Agreement, dated February 9, 2017, between Aon plc and Tempo Acquisition, LLC - incorporated by reference to Exhibit 2.1 to Aons Current Report on Form 8-K filed February 10, 2017. 10.11*# 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 Aons Quarterly Report on 10-Q for the quarter ended March 31, 2017. 10.12*# Deed of Assumption of Aon plc, dated April 1, 2020 - incorporated by reference to Exhibit 10.1 to Aons Current Report on Form 8-K12B filed April 1, 2020. 10.13*# Deed of Assumption of Aon Global Limited, dated April 2, 2012 - incorporated by reference to Exhibit 10.7 to Aons Current Report on Form 8-K12B filed April 2, 2012. 10.14*# Aon Corporation Outside Director Corporate Bequest Plan (as amended and restated, effective January 1, 2010) - incorporated by reference to Exhibit 10.1 to Aons Quarterly Report on Form 10-Q for the quarter ended June 30, 2010. 10.15*# 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. 10.16*# First Amendment to the Amended and Restated Aon Stock Incentive Plan - incorporated by reference to Exhibit 10(au) to Aons Annual Report on Form 10-K for the year ended December 31, 2006. 10.17*# Second Amendment to the Amended and Restated Aon Stock Incentive Plan, dated April 2, 2012 - incorporated by reference to Exhibit 10.10 to Aons Current Report on Form 8-K 12B filed April 2, 2012. 10.19*# First Amendment to the Aon Stock Award Plan - incorporated by reference to Exhibit 10(as) to Aons Annual Report on Form 10-K for the year ended December 31, 2006. 10.20*# Aon plc 2011 Incentive Plan (as amended and restated, effective March 29, 2019) - incorporated by reference to Exhibit 10.1 to Aons Quarterly Report on Form 10-Q filed on July 26, 2019. 10.21*# Executive Committee Incentive Compensation Plan - incorporated by reference to Exhibit 10.3 to Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2016. 10.22*# Aon plc Leadership Performance Program (as amended and restated, effective January 1, 2019) - incorporated by reference to Exhibit 10.1 to Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2019. 10.23*# Aon plc Senior Executive Combined Severance and Change in Control Plan (as amended and restated, effective June 21, 2019) - incorporated by reference to Exhibit 10.1 to Aons Quarterly Report on Form 10-Q for the quarter end June 30, 2019. 10.24# Senior Executive Incentive Compensation Plan (as amended and restated, effective January 1, 2020). 10.25*# Form of Deed of Indemnity of Aon plc - incorporated by reference to Exhibit 10.4 to Aons Current Report on Form 8-K12B filed April 1, 2020. 10.26*# Form of Deed of Indemnity for Directors of Aon Global Limited - incorporated by reference to Exhibit 10.4 to Aons Current Report on Form 8-K12Bfiled April 2, 2012. 10.27*# Form of Deed of Indemnity for Gregory C. Case - incorporated by reference to Exhibit 10.5 to Aons Current Report on Form 8-K12Bfiled April 2, 2012. 10.28*# Form of Deed of Indemnity for Executive Officers of Aon plc - incorporated by reference to Exhibit 10.6 to Aons Current Report on Form 8-K12Bfiled April 2, 2012. 10.29*# Form of Service as a Non-Executive Director Agreement - incorporated by reference to Exhibit 10.2 to Aons Quarterly Report on Form 10-Q for the quarter ended September 30, 2016. 10.30*# 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 Aons Current Report on Form 8-K filed January 23, 2015. 10.31*# Amendment to Amended and Restated Employment Agreement, dated April 20, 2018, among Aon plc, Aon Corporation and Gregory C. Case - incorporated by reference to Exhibit 10.1 to Aons Current Report on Form 8-K filed April 25, 2018. 10.32*# 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 Aons Current Report on Form 8-K filed on May 15, 2018. 10.33*# Amended and Restated Change in Control Agreement dated as of November13, 2009 between Aon and GregoryC. Case- incorporated by reference to Exhibit10.2 to Aons Current Report on Form8-K filed on November17, 2009. 10.34*# Amendment to the Amended and Restated Change of Control Agreement between Aon plc and Gregory C. Case, dated as of April 27, 2016 - incorporated by reference to Exhibit 10.11 on Aons Quarterly Report on Form 10-for the quarter ended March 31, 2016. 10.35*# International Assignment Letter with Gregory C. Case, effective July 1, 2016 - incorporated by reference to Exhibit 10.1 to Aons Quarterly Report on Form 10-Q for the quarter ended June 30, 2016. 10.36*# Amendment to International Assignment Letter, dated June25, 2018, with Gregory C. Case- incorporated by reference to Exhibit 10.2 to Aons Current Report on Form 8-K filed on June 27, 2018. 10.37*# Amendment to International Assignment Letter, dated June25, 2019, with Gregory C. Case-incorporated by reference to Exhibit 10.2 to Aons 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 andGreg C. Case- incorporated by reference to Exhibit 10.2to Aons Current Report on Form 8-K filed June 25, 2020. 10.39*# Employment Agreement dated as of October3, 2007 between Aon Corporation and Christa Davies- incorporated by reference to Exhibit10.1 to Aons Current Report on Form8-K filed on October3, 2007. 10.40*# Amendment effective as of March27, 2012 to Employment Agreement between Aon Corporation and Christa Davies dated as of October3, 2007- incorporated by reference to Exhibit10.1 to Aons Current Report on Form8-K filed on March30, 2012. 10.41*# Amendment to Employment Agreement, dated April19, 2018, by and between Aon Corporation and Christa Davies - incorporated by reference to Exhibit 10.1 to Aons Current Report on Form 8-K filed on April 25, 2018. 10.42*# International Assignment Letter with Christa Davies, effective July 1, 2016 - incorporated by reference to Exhibit 10.2 to Aons Quarterly Report on Form 10-Q for the quarter ended June 30, 2016 10.43*# Amendment to International Assignment Letter, dated June25, 2018, with Christa Davies - incorporated by reference to Exhibit 10.1 to Aons Current Report on Form 8-K filed on June 27, 2018. 10.44*# Amendment to International Assignment Letter, dated June25, 2019, with Christa Davies, incorporated by reference to Exhibit 10.1 to Aons Current Report on Form 8-K filed on June 25, 2019. 10.45*# Amendment to International Assignment Letter, dated June 19, 2020, between Aon Corporation andChrista Davies- incorporated by reference to Exhibit 10.2 to Aons Current Report on Form 8-K filed June 25, 2020. 10.46*# Transition and Separation Agreement between Aon Corporation and Peter Lieb, effective June3, 2019, incorporated by reference to Exhibit 10.1 to Aons Current Report on Form 8-K filed on June 4, 2019. 10.47*# Transition and Separation Agreement, effective April 30, 2020, between Aon Corporation and Michael J. OConnor - incorporated by reference to Exhibit 10.13 to Aons Quarterly Report for the quarter ended March 31, 2020. 10.48*# Employment Letter with Michael OConnor effective March 1, 2018, incorporated by reference to Exhibit 10.4 to Aons Quarterly Report on 10-Q for the quarter ended March 31, 2018. 10.49*# Letter Agreement, dated May11, 2018, by and between Aon Corporation and Michael OConnor, - incorporated by reference to Exhibit 10.2 to Aons Current Report on Form 8-K filed on May 15, 2018. 10.50*# Letter Agreement, dated May11, 2018, by and between Aon Corporation and Eric Andersen- incorporated by reference to Exhibit 10.3 to Aons Current Report on Form 8-K filed on May 15, 2018. 10.51# Employment Letter, dated November 6, 2018, between Aon Corporation and John Bruno. 10.52*# Consent to Shared-Sacrifice Reduction in Salary, dated April 23, 2020, between Aon plc and Gregory C. Case - incorporated by reference to Exhibit 10.6 to Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2020. 10.53*# Consent to Shared-Sacrifice Reduction in Salary, dated April 23, 2020, between Aon plc and Christa Davies - incorporated by reference to Exhibit 10.7 to Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2020. 10.54*# Consent to Shared-Sacrifice Reduction in Salary, dated April 23, 2020, between Aon plc and Eric Andersen - incorporated by reference to Exhibit 10.8 to Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2020. 10.55*# Consent to Shared-Sacrifice Reduction in Salary, dated April 23, 2020, between Aon plc and John Bruno - incorporated by reference to Exhibit 10.9 to Aons Quarterly Report on Form 10-Q for the quarter ended March 31, 2020. 10.56*# 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. 10.57*# 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. 10.58*# Second Amendment to the Amended and Restated Aon Deferred Compensation Plan, effective April 19, 2017 - incorporated by reference to Exhibit 10.1 to Aons Quarterly Report on Form 10-Q for the quarter ended June 30, 2017. 10.59*# Third Amendment to the Amended and Restated Aon Deferred Compensation Plan, effective December 27, 2019 - incorporated by referenced to Exhibit 10.51 to Aons Annual Report on Form 10-K for the year ended December 31, 2019. 10.60# Fourth Amendment to the Amended and Restated Aon Deferred Compensation Plan, effective May 7, 2020. 10.61*# Aon plc Global Share Purchase Plan, amended and restated effective January 1, 2021. 10.62*# Form of Restricted Stock Unit Award Agreement, incorporated by reference to Exhibit 10.51 to Aons Annual Report on Form 10-K for the year ended December 31, 2016. 10.63*# Form of Restricted Stock Unit Agreement, incorporated by reference to Exhibit 10.2 to Aons 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 Aons Annual Report on Form 10-K for the year ended December 31, 2016. 10.65*# First Amendment to the Aon Supplemental Savings Plan, amended and restated effective January 1, 2017, effective March 30, 2017, incorporated by reference to Exhibit 52 to Aons 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 Aons 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 Aons 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. 10.69# Fifth Amendment to the Aon Supplemental Savings Plan, effective January 1, 2021. 10.70*# 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 10.58 to Aons Annual Report on Form 10-K for the year ended December 31, 2019. 10.71*# Master Assignment, Assumption and Amendment Deed to Change in Control Arrangements of Aon plc, dated April 1, 2020 - incorporated by reference to Exhibit 10.3 to Aons Current Report on Form 8-K12B filed April 1, 2020. 10.72*# Master Amendment to the Remaining Plans, dated April 1, 2020, of Aon Corporation - incorporated by reference to Exhibit 10.3 to Aons Current Report on Form 8-K12B filed April 1, 2020. 10.73* Form of Irrevocable Director Undertaking - incorporated by reference to Exhibit 10.1 to Aons Form 8-K filed March 10, 2020. 10.74# Form of Acknowledgment of Tax Equalization Process Letter Agreement with Non-Employee Directors. 21.1 List of Subsidiaries of Aon. 22.1 Subsidiary Guarantors and Issuers of Guaranteed Securities 23 Consent of Ernst& Young LLP. 31.1. Rule13a-14(a) Certification of Chief Executive Officer of Aon in accordance with Section302 of the Sarbanes-Oxley Act of 2002. 31.2. Rule13a-14(a) Certification of Chief Financial Officer of Aon in accordance with Section302 of the Sarbanes-Oxley Act of 2002. 32.1. Section1350 Certification of Chief Executive Officer of Aon in accordance with Section906 of the Sarbanes-Oxley Act of 2002. 32.2. Section1350 Certification of Chief Financial Officer of Aon in accordance with Section906 of the Sarbanes-Oxley Act of 2002.