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Information Concerning Forward-Looking Statements

This report contains certain statements related to future results, or states our intentions, beliefs, and expectations or predictions for the future, which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements represent management’s expectations or forecasts of future events. Forward-looking statements are typically identified by words such as “anticipate,” “believe,” “estimate,” “expect,” “forecast,” “project,” “intend,” “plan,” “probably,” “potential,” “looking forward,” “continue,” and other similar terms, and future or conditional tense verbs like “could,” “may,” “might,” “should,” “will,” and “would.” You can also identify forward-looking statements by the fact that they do not relate strictly to historical or current facts. For example, we may use forward-looking statements when addressing topics such as: market and industry conditions, including competitive and pricing trends; changes in our business strategies and methods of generating revenue; the development and performance of our services and products; changes in the composition or level of our revenues; our cost structure and the outcome of cost-saving or restructuring initiatives; the outcome of contingencies; dividend policy; the expected impact of acquisitions, dispositions, and other significant transactions, such as the Combination, as defined in Part I, Item 1 of this report; pension obligations; cash flow and liquidity; expected effective tax rate; future actions by regulators; and the impact of changes in accounting rules. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from either historical or anticipated results depending on a variety of factors. Potential factors, which may be revised or supplemented in subsequent reports filed or furnished with the Securities and Exchange Commission (the “SEC”), that could impact results include:

•changes in the competitive environment or damage to our reputation;

•fluctuations in currency exchange and interest rates that could impact our financial condition or results;

•changes in global equity and fixed income markets that could affect the return on invested assets;

•changes in the funded status of our various defined benefit pension plans and the impact of any increased pension funding resulting from those changes;

•the level of our debt and the terms thereof reducing our flexibility or increasing borrowing costs;

•rating agency actions that could limit our access to capital and our competitive position ;

•our global tax rate being subject to a variety of different factors, which could create volatility in that tax rate;

•changes in our accounting estimates and assumptions on our financial statements;

•limits on our subsidiaries’ ability to pay dividends or otherwise make payments to us;

•the impact of legal proceedings and other contingencies, including those arising from errors and omissions and other claims against us;

•the impact of, and potential challenges in complying with, laws and regulations of the jurisdictions in which we operate, particularly given the global nature of operations and the possibility of differing or conflicting laws and regulations, or the application or interpretation thereof, across such jurisdictions;

•the impact of any regulatory investigations brought in Ireland, the United Kingdom (the “U.K.”), the United States (the “U.S”). and other countries;

•failure to protect intellectual property rights or allegations that we have infringed on the intellectual property rights of others;

•general economic and political conditions in the countries in which we do business around the world, including the withdrawal of the U.K. from the European Union (the “E.U.”)

•the failure to retain, attract and develop experienced and qualified personnel;

•international risks associated with our global operations;

•the effects of natural or man-made disasters, including the effects of the COVID-19 and other health pandemics;

•the potential for a system or network disruption or breach to result in operational interruption or improper disclosure of confidential, personal, or proprietary data;

•our ability to develop and implement new technology;

•damage to our reputation among clients, colleagues, markets or third parties;

•the actions taken by third parties that perform aspects of our business operations and client services;

•the extent to which we are exposed to certain risks, including lawsuits, related to our actions we may take in acting in a being responsible for making decisions on behalf of clients in our investment consulting business or in other advisory services that we currently provide, or will provide in the future;

•our ability to continue, and the costs and risks associated with, growing, developing and integrating acquired business, and entering into new lines of business or products;

•changes in commercial property and casualty markets, commercial premium rates or methods of compensation;

•our ability to implement initiatives intended to yield cost savings and the ability to achieve those cost savings;

•the effects of Irish law on our operating flexibility and the enforcement of judgments against us; and

•risks and uncertainties associated with the Combination, including our ability to obtain the requisite approvals of, to satisfy the other conditions to, or to otherwise complete, the Combination on the expected time frame, or at all, the occurrence of unanticipated difficulties or costs in connection with the Combination, our ability to successfully integrate the combined companies following the Combination and our ability to realize the expected benefits from the Combination.

Any or all of our forward-looking statements may turn out to be inaccurate, and there are no guarantees about our performance. The factors identified above are not exhaustive. Aon and its subsidiaries operate in a dynamic business environment in which new risks may emerge frequently. Accordingly, readers should not place undue reliance on forward-looking statements, which speak only as of the dates on which they are made. We are under no (and expressly disclaim any) obligation to update or alter any forward-looking statement that we may make from time to time, whether as a result of new information, future events, or otherwise. Further information about factors that could materially affect Aon, including our results of operations and financial condition, is contained in the “Risk Factors” section in Part I, Item 1A of this report.

Table of Contents

PART I
			Item 1. Business
			Item 1A. Risk Factors
			Item 1B. Unresolved Staff Comments
			Item 2. Properties
			Item 3. Legal Proceedings
			Item 4. Mine Safety Disclosure
PART II
			Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
			Item 6. Selected Financial Data
			Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations
			Item 7A. Quantitative and Qualitative Disclosures About Market Risk
			Item 8. Financial Statements and Supplementary Data
			Aon plc Consolidated Statements of Income
			Aon plc Consolidated Statements of Comprehensive Income
			Aon plc Consolidated Statements of Financial Position
			Aon plc Consolidated Statements of Shareholders' Equity
			Aon plc Consolidated Statements of Cash Flows
			Notes to Consolidated Financial Statements
			Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
			Item 9A. Controls and Procedures
			Item 9B. Other Information
PART III
			Item 10. Directors, Executive Officers and Corporate Governance
			Item 11. Executive Compensation
			Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
			Item 13. Certain Relationships and Related Transactions, and Director Independence
			Item 14. Principal Accountant Fees and Services
PART IV
			Item 15. Exhibits and Financial Statement Schedules
SIGNATURES