aon-20260930

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2026

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 1-7933

Aon plc

(Exact Name of Registrant as Specified in Its Charter)


IRELAND						98-1539969
(State or other jurisdiction of						(I.R.S. Employer
incorporation or organization)						Identification No.)


15 George's Quay, Dublin 2, Ireland						D02 VR98
(Address of principal executive offices)						(Zip Code)

+353 1 266 6000

(Registrant’s Telephone Number,

including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange
on which registered

Class A Ordinary Shares $0.01 nominal value

AON

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.850% Senior Notes due 2027

AON27

New York Stock Exchange

Guarantees of Aon North America, Inc.’s 5.125% Senior Notes due 2027

AON27B

New York Stock Exchange

Guarantees of Aon North America, Inc.’s 5.150% Senior Notes due 2029

AON29

New York Stock Exchange

Guarantees of Aon North America, Inc. and Aon Global Holdings plc’s 5.350% Senior Notes due 2029

AON29B

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.050% Senior Notes due 2031

AON31

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.600% Senior Notes due 2031

AON31A

New York Stock Exchange

Guarantees of Aon North America, Inc.’s 5.300% Senior Notes due 2031

AON31B

New York Stock Exchange

Guarantees of Aon North America, Inc. and Aon Global Holdings plc’s 5.625% Senior Notes due 2031

AON31C

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 5.000% Senior Notes due 2032

AON32

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 5.350% Senior Notes due 2033

AON33

New York Stock Exchange

Guarantees of Aon North America, Inc. and Aon Global Holdings plc’s 5.800% Senior Notes due 2033

AON33A

New York Stock Exchange

Guarantees of Aon North America, Inc.’s 5.450% Senior Notes due 2034

AON34

New York Stock Exchange

Guarantees of Aon North America, Inc. and Aon Global Holdings plc’s 5.950% Senior Notes due 2036

AON36

New York Stock Exchange

Guarantees of Aon North America, Inc. and Aon Global Holdings plc’s 6.100% Senior Notes due 2038

AON38

New York Stock Exchange

Guarantees of Aon plc’s 4.250% Senior Notes due 2042

AON42

New York Stock Exchange

Guarantees of Aon plc’s 4.450% Senior Notes due 2043

AON43

New York Stock Exchange

Guarantees of Aon plc’s 4.600% Senior Notes due 2044

AON44

New York Stock Exchange

Guarantees of Aon plc’s 4.750% Senior Notes due 2045

AON45

New York Stock Exchange

Guarantees of Aon North America, Inc. and Aon Global Holdings plc’s 6.450% Senior Notes due 2046

AON46

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.900% Senior Notes due 2051

AON51

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 3.900% Senior Notes due 2052

AON52

New York Stock Exchange

Guarantees of Aon North America, Inc.’s 5.750% Senior Notes due 2054

AON54

New York Stock Exchange

Guarantees of Aon North America, Inc. and Aon Global Holdings plc’s 6.450% Senior Notes due 2056

AON56

New York Stock Exchange

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer

☒

Accelerated filer

☐

Non-accelerated filer

☐

Smaller reporting company

☐

Emerging growth company

☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

Number of class A ordinary shares of Aon plc, $0.01 nominal value, outstanding as of October 27, 2026: 212,157,176

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, all of which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Forward-looking statements represent management’s expectations or forecasts of future events. These statements include statements about our plans, objectives, strategies, financial performance and outlook, trends, prospects or other future events and involve known and unknown risks that are difficult to predict. Forward-looking statements are typically identified by words such as “anticipate,” “believe,” “estimate,” “expect,” “forecast,” “project,” “positioned,” “intend,” “plan,” “potential,” “continue,” “target,” 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, industry and geopolitical 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, including the impacts of the Accelerating Aon United Program; the pending USI Acquisition; the outcome of contingencies; dividend and share repurchase policy; the expected impact of acquisitions, dispositions, and other significant transactions or the termination thereof; litigation and regulatory matters; pension obligations; cash flow and liquidity; expected effective tax rate; expected foreign currency translation impacts; potential changes in laws or 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, that could impact results include:

•changes in the competitive environment, due to macroeconomic conditions or otherwise, or damage to our reputation;

•fluctuations in currency exchange, interest, or inflation 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, including the application of the OECD’s Pillar Two tax regime by Ireland, the U.K., Singapore, and many E.U. member states, among others, or other pending proposals in those and other countries, 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 their respective parent entities;

•the impact of legal proceedings and other contingencies, including those arising from acquisition or disposition transactions, errors and omissions and other claims against us (including proceedings and contingencies relating to transactions for which capital was arranged by Vesttoo Ltd. or related to actions we may take in being responsible for making decisions on behalf of clients in our investment businesses or in other advisory services that we currently provide, or may provide in the future);

•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 our operations and the possibility of differing or conflicting laws and regulations, or the application or interpretation thereof, across such jurisdictions, including but not limited to in areas of cybersecurity, data privacy, and artificial intelligence;

•the impact of any regulatory investigations brought in Ireland, the United Kingdom, the United States, 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;

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

•international risks associated with our global operations, including geopolitical conflicts, tariffs, or changes in trade policies;

•the effects of natural or human-caused disasters, including the effects of health pandemics and the impacts of climate-related events;

•any system or network disruption or breach resulting in operational interruption or improper disclosure of confidential, personal, or proprietary data, and resulting liabilities or damage to our reputation;

•our ability to develop, implement, update, and enhance new technology;

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

•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;

•our ability to secure regulatory approval and complete transactions, and the costs and risks associated with the failure to consummate proposed transactions;

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

•our ability to develop and implement innovative growth strategies and initiatives intended to yield cost savings (including the Accelerating Aon United Program) and the ability to achieve such growth or cost savings;

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

•adverse effects on the market price of Aon’s securities and/or operating results for any reason, including, without limitation, because of a failure to consummate the pending USI Acquisition, or the failure to realize the expected benefits of the pending USI Acquisition (including anticipated revenue and growth synergies) in the expected timeframe, or at all;

•significant transaction and integration costs or difficulties in connection with the pending USI Acquisition or unknown or inestimable liabilities; and

•potential impact of the consummation of the pending USI Acquisition on relationships, including with suppliers, customers, employees and regulators.

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 our filings with the SEC, including the “Risk Factors” section in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2025 and Part II, Item 1A of this report. These factors may be revised or supplemented in our subsequent periodic filings with the SEC.

Table of Contents


PART I - FINANCIAL INFORMATION

			Item 1. Financial Statements
			Aon plc Condensed Consolidated Statements of Income
			Aon plc Condensed Consolidated Statements of Comprehensive Income
			Aon plc Condensed Consolidated Statements of Financial Position
			Aon plc Condensed Consolidated Statements of Shareholders’ Equity
			Aon plc Condensed Consolidated Statements of Cash Flows
			Notes to Condensed Consolidated Financial Statements

			Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations
			Item 3. Quantitative and Qualitative Disclosures about Market Risk
			Item 4. Controls and Procedures

PART II - OTHER INFORMATION

			Item 1. Legal Proceedings
			Item 1A. Risk Factors
			Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
			Item 3. Defaults Upon Senior Securities
			Item 4. Mine Safety Disclosures
			Item 5. Other Information
			Item 6. Exhibits
			Signature
			Exhibit Index

The below definitions apply throughout this report unless the context requires otherwise:


Term			Definition






AAU			Accelerating Aon United Program
ASC			Accounting Standards Codification
CODM			Chief Operating Decision Maker

DCF			Discounted Cash Flow

E&O			Errors and Omissions
EBITDA			Earnings before Interest, Taxes, Depreciation, and Amortization
EMEA			Europe, the Middle East, and Africa


E.U.			European Union
FASB			Financial Accounting Standards Board
FCA			Financial Conduct Authority

GAAP			U.S. Generally Accepted Accounting Principles
GHG			Greenhouse Gas




LOC			Letter of Credit








OECD			Organization for Economic Co-operation and Development




P&C			Property and Casualty
ROU			Right-of-Use



SEC			Securities and Exchange Commission
U.K.			United Kingdom
U.S.			United States

Part I Financial Information

Item 1. Financial Statements

Aon plc

Condensed Consolidated Statements of Income

(Unaudited)


	Three Months Ended September 30,				Nine Months Ended September 30,
(millions, except per share data)	2026		2025		2026		2025
Revenue
Total revenue	$	4,101	$	3,997	$	13,381	$	12,881
Expenses
Compensation and benefits	2,275		2,259		6,939		6,868
Information technology	156		140		462		412
Premises	83		85		249		252
Depreciation of fixed assets	49		47		144		140
Amortization and impairment of intangible assets	175		193		501		593
Other general expense	461		425		1,366		1,244
Accelerating Aon United Program expenses	93		32		281		236
Total operating expenses	3,292		3,181		9,942		9,745
Operating income	809		816		3,439		3,136
Interest income	24		—		41		5
Interest expense	(206)		(206)		(564)		(624)
Other income (expense)	(15)		(13)		(27)		33
Income before income taxes	612		597		2,889		2,550
Income tax expense	126		127		599		504


Net income	486		470		2,290		2,046
Less: Net income attributable to redeemable and nonredeemable noncontrolling interests	10		12		51		44
Net income attributable to Aon shareholders	$	476	$	458	$	2,239	$	2,002

Basic net income per share attributable to Aon shareholders	$	2.24	$	2.12	$	10.50	$	9.26



Diluted net income per share attributable to Aon shareholders	$	2.23	$	2.11	$	10.46	$	9.21



Weighted average ordinary shares outstanding - basic	212.3		215.7		213.3		216.1
Weighted average ordinary shares outstanding - diluted	213.0		216.7		214.1		217.3

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Comprehensive Income

(Unaudited)


	Three Months Ended September 30,				Nine Months Ended September 30,
(millions)	2026		2025		2026		2025
Net income	$	486	$	470	$	2,290	$	2,046
Less: Net income attributable to redeemable and nonredeemable noncontrolling interests	10		12		51		44
Net income attributable to Aon shareholders	476		458		2,239		2,002
Other comprehensive income (loss), net of tax:
Change in fair value of financial instruments	26		(9)		17		4
Foreign currency translation adjustments	29		(91)		(157)		752
Postretirement benefit obligation	26		28		78		74
Total other comprehensive income (loss)	81		(72)		(62)		830
Less: Other comprehensive income attributable to noncontrolling interests	—		—		—		—
Total other comprehensive income (loss) attributable to Aon shareholders	81		(72)		(62)		830
Comprehensive income attributable to Aon shareholders	$	557	$	386	$	2,177	$	2,832

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Financial Position


	(Unaudited)
(millions, except nominal value)	September 30, 2026		December 31, 2025
Assets
Current assets
Cash and cash equivalents	$	2,017	$	1,195
Short-term investments	13,299		1,603
Receivables, net	4,777		4,209
Fiduciary assets	18,890		17,889
Other current assets	904		878

Total current assets	39,887		25,774
Goodwill	15,897		15,797
Intangible assets, net	5,487		5,727
Fixed assets, net	806		702
Operating lease right-of-use assets	744		677
Deferred tax assets	884		748
Prepaid pension	602		603
Other non-current assets	832		756

Total assets	$	65,139	$	50,784

Liabilities, redeemable noncontrolling interests, and equity
Liabilities
Current liabilities
Accounts payable and accrued liabilities	$	2,535	$	2,861
Short-term debt and current portion of long-term debt	1,722		589
Fiduciary liabilities	18,890		17,889
Other current liabilities	2,023		1,887

Total current liabilities	25,170		23,226
Long-term debt	26,319		14,660
Non-current operating lease liabilities	731		641
Deferred tax liabilities	350		340
Pension, other postretirement, and postemployment liabilities	976		1,084
Other non-current liabilities	1,376		1,285

Total liabilities	54,922		41,236

Redeemable noncontrolling interests	20		89

Equity
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: at September 30, 2026 - 212.2; at December 31, 2025 - 214.5)	2		2
Additional paid-in capital	13,620		13,438
Retained earnings (Accumulated deficit)	384		(245)
Accumulated other comprehensive loss	(3,905)		(3,843)
Total Aon shareholders' equity	10,101		9,352
Nonredeemable noncontrolling interests	96		107
Total equity	10,197		9,459
Total liabilities, redeemable noncontrolling interests and equity	$	65,139	$	50,784

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Shareholders’ Equity

(Unaudited)


(millions)	Shares	Ordinary Shares and Additional Paid-in Capital		Retained Earnings (Accumulated Deficit)		Accumulated Other Comprehensive Loss, Net of Tax		Non- redeemable Non- controlling Interests		Total


Balance at January 1, 2026	214.5	$	13,440	$	(245)	$	(3,843)	$	107	$	9,459
Net income (1)	—	—		1,212		—		28		1,240
Shares issued - employee stock compensation plans	0.6	(68)		—		—		—		(68)
Shares repurchased	(1.5)	—		(500)		—		—		(500)
Share-based compensation expense	—	82		—		—		—		82
Dividends to shareholders ($0.745 per share)	—	—		(160)		—		—		(160)
Net change in fair value of financial instruments	—	—		—		(4)		—		(4)
Net foreign currency translation adjustments	—	—		—		(108)		—		(108)
Net postretirement benefit obligation	—	—		—		27		—		27
Net purchases of subsidiary shares from nonredeemable noncontrolling interests	—	(2)		—		—		(1)		(3)
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(10)		(10)
Remeasurement of redemption value of redeemable noncontrolling interest	—	3		—		—		—		3
Balance at March 31, 2026	213.6	$	13,455	$	307	$	(3,928)	$	124	$	9,958
Net income (2)	—	—		551		—		14		565

Shares issued - employee stock compensation plans	0.3	(46)		—		—		—		(46)
Shares repurchased	(1.9)	—		(600)		—		—		(600)
Share-based compensation expense	—	122		—		—		—		122
Dividends to shareholders ($0.820 per share)	—	—		(176)		—		—		(176)
Net change in fair value of financial instruments	—	—		—		(5)		—		(5)
Net foreign currency translation adjustments	—	—		—		(78)		—		(78)
Net postretirement benefit obligation	—	—		—		25		—		25
Purchases of subsidiary shares from nonredeemable noncontrolling interests	—	(27)		—		—		(9)		(36)
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(41)		(41)
Remeasurement of redemption value of redeemable noncontrolling interest	—	(2)		—		—		—		(2)

Balance at June 30, 2026	212.0	$	13,502	$	82	$	(3,986)	$	88	$	9,686
Net income (3)	—	—		476		—		10		486
Shares issued - employee stock compensation plans	0.2	12		—		—		—		12

Share-based compensation expense	—	104		—		—		—		104
Dividends to shareholders ($0.820 per share)	—	—		(174)		—		—		(174)
Net change in fair value of financial instruments	—	—		—		26		—		26
Net foreign currency translation adjustments	—	—		—		29		—		29
Net postretirement benefit obligation	—	—		—		26		—		26

Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(2)		(2)
Remeasurement of redemption value of redeemable noncontrolling interest	—	4		—		—		—		4
Balance at September 30, 2026	212.2	$	13,622	$	384	$	(3,905)	$	96	$	10,197

(1)The Company’s Net income totaled $1.2 billion for the quarter ended March 31, 2026, which included $1 million of Net loss related to redeemable noncontrolling interests.

(2)The Company’s Net income totaled $565 million for the quarter ended June 30, 2026, which included an insignificant Net loss related to redeemable noncontrolling interests.

(3)The Company’s Net income totaled $486 million for the quarter ended September 30, 2026, which included an insignificant Net loss related to redeemable noncontrolling interests.


(millions)	Shares		Ordinary Shares and Additional Paid-in Capital		Accumulated Deficit		Accumulated Other Comprehensive Loss, Net of Tax		Non-redeemable Non- controlling Interests		Total
Balance at January 1, 2025	216.0		$	13,175	$	(2,309)	$	(4,745)	$	184	$	6,305
Net income (1)	—		—		965		—		21		986
Shares issued - employee stock compensation plans	0.7		(111)		—		—		—		(111)
Shares repurchased	(0.6)		—		(250)		—		—		(250)
Share-based compensation expense	—		147		—		—		—		147
Dividends to shareholders ($0.675 per share)	—		—		(146)		—		—		(146)
Net change in fair value of financial instruments	—		—		—		3		—		3
Net foreign currency translation adjustments	—		—		—		239		—		239
Net postretirement benefit obligation	—		—		—		47		—		47

Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—		—		—		—		(14)		(14)
Remeasurement of redemption value of redeemable noncontrolling interest	$	—	$	(11)	$	—	$	—	$	—	(11)
Balance at March 31, 2025	216.1		$	13,200	$	(1,740)	$	(4,456)	$	191	$	7,195
Net income (2)	—		—		579		—		14		593

Shares issued - employee stock compensation plans	0.3		(49)		(1)		—		—		(50)
Shares repurchased	(0.7)		—		(250)		—		—		(250)
Share-based compensation expense	—		119		—		—		—		119
Dividends to shareholders ($0.745 per share)	—		—		(162)		—		—		(162)
Net change in fair value of financial instruments	—		—		—		10		—		10
Net foreign currency translation adjustments	—		—		—		604		—		604
Net postretirement benefit obligation	—		—		—		(1)		—		(1)
Purchases of subsidiary shares from nonredeemable noncontrolling interests	—		(9)		—		—		—		(9)
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—		—		—		—		(40)		(40)
Remeasurement of redemption value of redeemable noncontrolling interest	—		(1)		—		—		—		(1)
Balance at June 30, 2025	215.7		$	13,260	$	(1,574)	$	(3,843)	$	165	$	8,008
Net income (3)	—		—		458		—		12		470
Shares issued - employee stock compensation plans	0.2		20		—		—		—		20
Shares repurchased	(0.7)		—		(250)		—		—		(250)
Share-based compensation expense	—		106		—		—		—		106
Dividends to shareholders ($0.745 per share)	—		—		(161)		—		—		(161)
Net change in fair value of financial instruments	—		—		—		(9)		—		(9)
Net foreign currency translation adjustments	—		—		—		(91)		—		(91)
Net postretirement benefit obligation	—		—		—		28		—		28
Purchases of subsidiary shares from noncontrolling interests	—		(1)		—		—		—		(1)
Dividends paid to noncontrolling interests on subsidiary common stock	—		—		—		—		(2)		(2)
Remeasurement of redemption value of redeemable noncontrolling interest	—		(4)		—		—		—		(4)
Balance at September 30, 2025	215.2		$	13,381	$	(1,527)	$	(3,915)	$	175	$	8,114

(1)The Company’s Net income totaled $982 million for the quarter ended March 31, 2025, which included $4 million of Net loss related to redeemable noncontrolling interests.

(2)The Company’s Net income totaled $594 million for the quarter ended June 30, 2025, which included $1 million of Net income related to redeemable noncontrolling interests.

(3)The Company’s Net income totaled $470 million for the quarter ended September 30, 2025, which included an insignificant amount of Net income related to redeemable noncontrolling interests.

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Cash Flows

(Unaudited)


	Nine Months Ended September 30,
(millions)	2026		2025
Cash flows from operating activities
Net income	$	2,290	$	2,046

Adjustments to reconcile net income to cash provided by operating activities:
Gain from sales of businesses	(20)		(1)
Depreciation of fixed assets	144		140
Amortization and impairment of intangible assets	501		593
Share-based compensation expense	308		372
Deferred income taxes	(217)		(236)
Other, net	(3)		(116)
Change in assets and liabilities:



Receivables, net	(591)		(342)
Accounts payable and accrued liabilities	(387)		(543)
Accelerating Aon United Program liabilities	42		(29)
Current income taxes	(49)		(141)
Pension, other postretirement and postemployment liabilities	(38)		(17)
Other assets and liabilities	197		358


Cash provided by operating activities	2,177		2,084
Cash flows from investing activities
Proceeds from investments	95		114
Purchases of investments	(75)		(139)
Net sales (purchases) of short-term investments - non fiduciary	(11,699)		16
Acquisition of businesses, net of cash and funds held on behalf of clients	(327)		(276)
Sale of businesses, net of cash and funds held on behalf of clients	22		112
Capital expenditures	(234)		(189)


Cash used for investing activities	(12,218)		(362)
Cash flows from financing activities
Share repurchase	(1,100)		(750)

Proceeds from issuance of shares	53		60
Cash paid for employee taxes on withholding shares	(155)		(201)
Commercial paper issuances, net of repayments	(3)		376
Issuance of debt	13,404		—
Repayment of debt	(593)		(700)

Increase in fiduciary liabilities, net of fiduciary receivables	1,132		706
Cash dividends to shareholders	(511)		(468)
Redeemable and nonredeemable noncontrolling interests, and other financing activities	(181)		(164)




Cash provided by (used for) financing activities	12,046		(1,141)
Effect of exchange rates on cash and cash equivalents and funds held on behalf of clients	(107)		606
Net increase in cash and cash equivalents and funds held on behalf of clients	1,898		1,187
Cash, cash equivalents and funds held on behalf of clients at beginning of period	8,573		8,333
Cash, cash equivalents and funds held on behalf of clients at end of period	$	10,471	$	9,520




Reconciliation of cash and cash equivalents and funds held on behalf of clients:
Cash and cash equivalents	$	2,017	$	1,095
Cash and cash equivalents and funds held on behalf of clients classified as held for sale	—		34
Funds held on behalf of clients	8,454		8,391
Total cash and cash equivalents and funds held on behalf of clients	$	10,471	$	9,520
Supplemental disclosures:
Interest paid	$	621	$	689
Income taxes paid, net of refunds	$	865	$	881

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Notes to Condensed Consolidated Financial Statements (Unaudited)

1. Basis of Presentation

The accompanying Condensed Consolidated Financial Statements and Notes thereto have been prepared in accordance with U.S. GAAP. The Condensed Consolidated Financial Statements include the accounts of Aon plc and all of its controlled subsidiaries (“Aon” or the “Company”). Intercompany accounts and transactions have been eliminated. The Condensed Consolidated Financial Statements include, in the opinion of management, all adjustments (consisting of normal recurring adjustments and reclassifications) necessary to present fairly the Company’s consolidated financial position, results of operations, and cash flows for all periods presented.

Certain information and disclosures normally included in the Consolidated Financial Statements prepared in accordance with U.S. GAAP have been condensed or omitted. The Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025. The results for the three and nine months ended September 30, 2026 are not necessarily indicative of operating results that may be expected for the full year ending December 31, 2026.

Use of Estimates

The preparation of the accompanying Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities at the date of the Condensed Consolidated Financial Statements, and the reported amounts of reserves and expenses. These estimates and assumptions are based on management’s best estimates and judgments. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. Management believes its estimates to be reasonable given the current facts available. Aon adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity markets, and foreign currency exchange rate movements increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in estimates resulting from continuing changes in the economic environment would, if applicable, be reflected in the Condensed Consolidated Financial Statements in future periods.

2. Accounting Principles and Practices

New Accounting Pronouncements

Accounting Standards Issued But Not Yet Adopted

Accounting for and Disclosure of Environmental Credits and Environmental Credit Obligations

In May 2026, the FASB issued new accounting guidance under ASC 818, Environmental Credits and Environmental Credit Obligations, which provides guidance on the recognition, measurement, presentation, and disclosure of environmental credits and environmental credit obligations. The guidance is applicable to environmental credits acquired, generated, or received by an entity and requires expanded disclosures related to the nature, intended use, and financial statement impacts. The new guidance is effective for annual and interim reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the timing of adoption and the impact the guidance will have on the Consolidated Financial Statements and Notes.

Accounting for and Disclosure of Software Costs

In September 2025, the FASB issued new accounting guidance under ASC 350-40, Intangibles — Goodwill and Other Internal Use Software to modernize the criteria for capitalizing software development costs by removing references to development stages and framework updates to better reflect current software development practices. The new guidance is effective for annual periods beginning after December 15, 2027, with early adoption permitted. The Company is evaluating the impact the new guidance will have on the Consolidated Financial Statements and Notes.

Disaggregation of Income Statement Expenses

In November 2024, the FASB issued new accounting guidance under ASC 220, Income Statement — Reporting Comprehensive Income, which requires more detailed information about certain expenses in commonly presented expense captions including inventory, employee compensation, depreciation, and amortization. The new guidance also requires disclosure of total selling expenses and, on an annual basis, an entity’s definition of selling expenses. The Company expects the new guidance to result in incremental disclosures within the Notes to Consolidated Financial Statements and to have no impact on the Company’s financial condition, results of operations, or cash flows. The new guidance is effective for Aon for the year ended December 31,

2027, with early adoption permitted. Entities may apply the new guidance on a prospective basis, with the option for retrospective application. The Company continues to evaluate the information and processes necessary to comply with the new disclosure requirements.

Securities and Exchange Commission Final Rules

The Enhancement and Standardization of Climate-Related Disclosures for Investors

In March 2024, the SEC adopted final rules to enhance and standardize climate-related disclosures. The final rules would require the Company to provide certain climate-related information in Item 7, Management’s Discussion and Analysis and the Notes to Consolidated Financial Statements, including regarding material climate-related risks, activities to mitigate or adapt to such risks, information regarding oversight and management of climate-related risks, information on climate-related targets or goals, and disclosure of Scope 1 and 2 GHG emissions. The final rules have been subject to several legal challenges, and the SEC stayed the effectiveness of the final rules in April 2024 pending judicial review. On March 27, 2025, the SEC voted to end its legal defense of the final rules in Court of Appeals for the Eighth Circuit. On September 12, 2025, the Eighth Circuit issued an order holding the consolidated petitions for review in abeyance until the SEC informed the court whether it would reconsider the rules under administrative procedures or whether the SEC would renew its defense of the rules. On May 29, 2026, the SEC proposed to rescind the climate-related disclosure rules in their entirety due to the lack of statutory authority of the SEC. The public comment period has concluded, and the SEC has not yet taken final action on the proposal. The Company will continue to monitor developments related to the proposed rescission and any impacts on its disclosure requirements.

3. Revenue from Contracts with Customers

Disaggregation of Revenue

The following table summarizes revenue from contracts with customers by principal service line (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Commercial Risk Solutions	$	2,110	$	1,988	$	6,628	$	6,168
Reinsurance Solutions	572		537		2,562		2,414
Total Risk Capital (1)	2,682		2,525		9,190		8,582
Health Solutions	992		935		2,929		2,733
Wealth Solutions	429		540		1,275		1,578
Total Human Capital (1)	1,421		1,475		4,204		4,311
Eliminations	(2)		(3)		(13)		(12)
Total revenue	$	4,101	$	3,997	$	13,381	$	12,881

(1)Includes inter-segment revenue. Refer to Note 16 “Segment Information” for further information.

Consolidated revenue from contracts with customers by geographic area, which is attributed on the basis of where the services are performed, is as follows (in millions):


	Three Months Ended September 30, 2026
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	1,353	$	785	$	(2)	$	2,136
Americas other than U.S.	263		121		—		384
U.K.	302		224		—		526
Ireland	21		25		—		46
Europe, Middle East, & Africa other than U.K. and Ireland	443		163		—		606
Asia Pacific	300		103		—		403
Total revenue	$	2,682	$	1,421	$	(2)	$	4,101


	Three Months Ended September 30, 2025
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	1,229	$	858	$	(3)	$	2,084
Americas other than U.S.	260		121		—		381
U.K.	303		222		—		525
Ireland	21		21		—		42
Europe, Middle East, & Africa other than U.K. and Ireland	400		155		—		555
Asia Pacific	312		98		—		410
Total revenue	$	2,525	$	1,475	$	(3)	$	3,997


	Nine Months Ended September 30, 2026
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	4,071	$	2,108	$	(13)	$	6,166
Americas other than U.S.	823		353		—		1,176
U.K.	1,206		641		—		1,847
Ireland	68		78		—		146
Europe, Middle East, & Africa other than U.K. and Ireland	2,095		718		—		2,813
Asia Pacific	927		306		—		1,233
Total revenue	$	9,190	$	4,204	$	(13)	$	13,381


	Nine Months Ended September 30, 2025
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	3,774	$	2,364	$	(12)	$	6,126
Americas other than U.S.	799		351		—		1,150
U.K.	1,144		612		—		1,756
Ireland	67		66		—		133
Europe, Middle East, & Africa other than U.K. and Ireland	1,815		636		—		2,451
Asia Pacific	983		282		—		1,265
Total revenue	$	8,582	$	4,311	$	(12)	$	12,881

Contract Costs

An analysis of the changes in the net carrying amount of costs to fulfill contracts with customers are as follows (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Balance at beginning of period	$	309	$	273	$	450	$	424
Additions	467		440		1,397		1,267
Amortization	(426)		(392)		(1,494)		(1,384)
Impairment	—		—		—		—
Foreign currency translation and other	2		(1)		(1)		13
Balance at end of period	$	352	$	320	$	352	$	320

An analysis of the changes in the net carrying amount of costs to obtain contracts with customers are as follows (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Balance at beginning of period	$	217	$	187	$	208	$	207
Additions	13		4		49		31
Amortization	(15)		(1)		(42)		(54)
Impairment	—		—		—		—
Foreign currency translation and other	—		—		—		6
Balance at end of period	$	215	$	190	$	215	$	190

4. Accelerating Aon United Program

In the third quarter of 2023, Aon initiated a three-year restructuring program called the Accelerating Aon United Program (the “Program” or the “AAU Program”) with the purpose of streamlining the Company’s technology infrastructure, optimizing its leadership structure and resource alignment, and reducing its real estate footprint to align to its hybrid working strategy. The Program includes technology-related costs to facilitate streamlining and simplifying operations, headcount reduction costs, and costs associated with asset impairments, including real estate consolidation and technology costs. The Program is an investment in the Company’s 3x3 Plan that brings together the best of the firm through its Aon United strategy, delivered as Risk Capital and Human Capital, and Aon’s Client Leadership model, powered by Aon Business Services.

Program charges are recognized within Accelerating Aon United Program expenses on the accompanying Condensed Consolidated Statements of Income and consist of the following cost activities:

•Technology and other – includes costs associated with actions taken to rationalize applications and to optimize technology across the Company. These costs may include termination fees and other non-capitalizable costs associated with Program initiatives, which include professional service fees.

•Workforce optimization – includes costs associated with headcount reduction and other separation-related costs.

•Asset impairments – includes non-cash costs associated with impairment of assets, as they are identified, including ROU lease assets, leasehold improvements, and other capitalized assets no longer providing economic benefit.

The Program is currently expected to result in cumulative costs of $1.3 billion, consisting of approximately $1.2 billion of cash charges and approximately $0.1 billion of non-cash charges. For the three and nine months ended September 30, 2026, total Program costs incurred were $93 million and $281 million, respectively. Over the life of the Program, the Risk Capital segment is expected to incur approximately $325 million of charges, while the Human Capital segment is expected to incur approximately $80 million of charges, with the remaining charges relating to corporate expenses. In the final months of the Program, there may be changes to expected timing, estimates of expected costs, and related savings.

Total Program costs incurred for the three and nine months ended September 30, 2026 and 2025 are as follows (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Risk Capital (1)	$	18	$	(3)	$	51	$	48
Human Capital (1)	2		(1)		6		9
Corporate	73		36		224		179
Total	$	93	$	32	$	281	$	236

(1)Risk Capital and Human Capital Program costs reflect changes in accruals made in the current period related to workforce optimization.

The changes in the Company’s liabilities for the Program as of September 30, 2026 are as follows (in millions):


	Technology and other		Workforce optimization		Asset impairments		Total
Liability balance as of December 31, 2025	$	39	$	108	$	—	$	147
Charges	181		96		4		281
Cash payments	(150)		(85)		—		(235)
Foreign currency translation and other	—		(2)		—		(2)
Non-cash charges (1)	(5)		5		(4)		(4)
Liability balance as of September 30, 2026	$	65	$	122	$	—	$	187
Total costs incurred from inception to date	$	516	$	551	$	103	$	1,170

(1)Charges reflect changes in accruals made in the current year.

The Company’s unpaid liabilities for charges under the Program are primarily included in Accounts payable and accrued liabilities and Other non-current liabilities in the Condensed Consolidated Statements of Financial Position.

5. Cash and Cash Equivalents and Short-Term Investments

Cash and cash equivalents include cash balances and all highly liquid instruments with initial maturities of three months or less. Short-term investments consist of money market funds. The estimated fair value of Cash and cash equivalents and Short-term investments approximates their carrying values.

At September 30, 2026, Cash and cash equivalents and Short-term investments were $15.3 billion compared to $2.8 billion at December 31, 2025, an increase of $12.5 billion, primarily related to net proceeds of $13.4 billion from debt offerings to be used for general corporate purposes, including to fund the USI acquisition. Refer to Note 7 “Acquisitions and Dispositions of Businesses” and Note 9 “Debt” for additional information. The balance as of December 31, 2025 reflected the investment of proceeds from the sale of the NFP Wealth business. Of the total balances, $165 million and $180 million were restricted as to their use at September 30, 2026 and December 31, 2025, respectively. Included within Short-term investments as of September 30, 2026 and December 31, 2025, were £73 million ($97 million at September 30, 2026 exchange rates) and £72 million ($97 million at December 31, 2025 exchange rates), respectively, of operating funds required to be held by the Company in the U.K. by the FCA, a U.K.-based regulator.

6. Other Financial Data

Condensed Consolidated Statements of Income Information

Other Income (Expense)

Other income (expense) consists of the following (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025

Gain from sales of businesses (1)	—		1		20		1
Equity earnings	2		4		—		5
Pension and other postretirement	(15)		(21)		(45)		(65)
Foreign currency remeasurement	(6)		11		6		(43)
Financial instruments and other (2)	4		(8)		(8)		135

Total	$	(15)	$	(13)	$	(27)	$	33

(1)During the nine months ended September 30, 2026, an additional $20 million gain was recognized associated with revisions to the final closing statement related to the disposal of the NFP Wealth business completed in the fourth quarter of 2025. The entirety of the gain was recognized in the first quarter of 2026. Refer to Note 7 “Acquisitions and Dispositions of Businesses” for further information surrounding this disposal.

(2)During the nine months ended September 30, 2025, a gain of $108 million was recognized, which was all recognized in the first six months of 2025. These gains related to deferred consideration from the affiliates of The Blackstone Group L.P. and the other designated purchasers related to a divestiture completed in a prior-year period.

Allowance for Doubtful Accounts

Changes in the net carrying amount of allowance for doubtful accounts are as follows (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Balance at beginning of period	$	82	$	79	$	74	$	75
Provision	5		4		18		10
Accounts written off, net of recoveries	(4)		(9)		(8)		(15)
Foreign currency translation and other	—		—		(1)		4
Balance at end of period	$	83	$	74	$	83	$	74

Other Current Assets

The components of Other current assets are as follows (in millions):


As of	September 30, 2026		December 31, 2025
Costs to fulfill contracts with customers (1)	$	352	$	450
Prepaid expenses	187		136
Taxes receivable	136		102

Other	229		190
Total	$	904	$	878

(1)Refer to Note 3 “Revenue from Contracts with Customers” for further information.

Other Non-Current Assets

The components of Other non-current assets are as follows (in millions):


As of	September 30, 2026		December 31, 2025
Costs to obtain contracts with customers (1)	$	215	$	208
Investments	198		192
Taxes receivable	102		82

Other	317		274
Total	$	832	$	756

(1)Refer to Note 3 “Revenue from Contracts with Customers” for further information.

Other Current Liabilities

The components of Other current liabilities are as follows (in millions):


As of	September 30, 2026		December 31, 2025
Deferred revenue (1)	$	262	$	259
Leases	176		181
Taxes payable	239		309
Contingent consideration	45		28

Other	1,301		1,110
Total	$	2,023	$	1,887

(1)During the three and nine months ended September 30, 2026, revenue of $164 million and $551 million, respectively, was recognized in the Condensed Consolidated Statements of Income that was previously deferred. During the three and nine months ended September 30, 2025, revenue of $258 million and $724 million, respectively, was recognized in the Condensed Consolidated Statements of Income that was previously deferred.

Other Non-Current Liabilities

The components of Other non-current liabilities are as follows (in millions):


As of	September 30, 2026		December 31, 2025
Taxes payable	$	1,085	$	1,014
Contingent consideration	120		99
Compensation and benefits	47		60
Deferred revenue	26		30

Other	98		82
Total	$	1,376	$	1,285

7. Acquisitions and Dispositions of Businesses

Announcement of USI Acquisition

On August 30, 2026, Aon plc, Aon North America, Inc. and Cortlandt Acquisition Corp. entered into an Agreement and Plan of Merger (the “Merger Agreement”) with USI Advantage Corp., a Delaware corporation (“USI”), and Uno Aggregator II L.P., as securityholder representative, pursuant to which Aon will acquire USI (the “USI Acquisition”) for an aggregate estimated purchase price of approximately $17 billion in cash. USI is a leading middle-market provider of property and casualty, employee benefit, personal risk, and retirement solutions, with more than 10,500 colleagues. The Company expects to fund the acquisition with new debt, a portion of which was raised in advance of the closing date, and the remainder is expected to be raised at close of the USI Acquisition. Refer to Note 9 “Debt” for additional information.

Completed Acquisitions

Total acquisitions completed by the Company for the three and nine months ended September 30, 2026 and 2025 were as follows. Acquisitions that impact multiple segments are categorized by the segment primarily impacted. Individually significant acquisitions are further described.


	Three Months Ended September 30,		Nine Months Ended September 30,
	2026	2025	2026	2025
Risk Capital	1	1	7	8
Human Capital	—	4	2	6
Total	1	5	9	14

2026 Significant Acquisitions

On March 16, 2026, the Company completed the acquisition of 100% of the share capital of ShoreOne Insurance Managers, Inc., a coastal-focused homeowners and flood insurance broker based in the U.S in the Risk Capital segment.

2025 Significant Acquisitions

On January 1, 2025, the Company completed the acquisition of 100% of the partnership interests and share capital of Griffiths & Armour, an insurance broker in the U.K. in the Risk Capital segment.

The following table includes the preliminary fair values of consideration transferred, assets acquired, and liabilities assumed as a result of the Company’s acquisitions completed in 2026 (in millions):


	Nine Months Ended September 30, 2026
Consideration transferred:
Cash	$	381
Deferred and contingent consideration	56
Aggregate consideration transferred	$	437
Assets acquired:


Goodwill	215
Intangible assets	281
Other assets (1)	82

Total assets acquired	578
Liabilities assumed:


Total liabilities assumed	141
Net assets acquired	$	437

(1)Includes Cash and cash equivalents of $26 million and $28 million, respectively, in funds held on behalf of clients.

The results of operations of these acquisitions are included in the Condensed Consolidated Financial Statements as of the respective acquisition dates. The Company’s results of operations would not have been materially different if these acquisitions had been reported from the beginning of the period in which they were acquired.

Completed Dispositions

There were no dispositions completed by the Company for the three and nine months ended September 30, 2026. Total dispositions completed by the Company for the three and nine months ended September 30, 2025 are set forth in the table below. Dispositions that impact multiple segments are categorized by the segment primarily impacted.


	Three Months Ended September 30, 2025	Nine Months Ended September 30, 2025

Risk Capital	1	1
Human Capital	1	2
Total	2	3

For the three months ended September 30, 2026, there were no gains recognized related to dispositions. For the nine months ended September 30, 2026, the pretax gains recognized related to dispositions were $20 million, which related to the disposition of the NFP Wealth business, as defined below, completed in the prior year. There were insignificant pretax gains recognized related to dispositions for the three and nine months ended September 30, 2025. Gains recognized as a result of a disposition are included in Other income (expense) in the Condensed Consolidated Statements of Income. See Note 6 “Other Financial Data” for more information.

2025 Significant Dispositions

On October 30, 2025, Aon completed the sale of a significant majority of NFP’s Wealth businesses within our Human Capital segment (the “NFP Wealth business”). Total proceeds received on closing was $2.3 billion, and a pre-tax gain of $1.2 billion was recognized within Other income (expense) on the Consolidated Statement of Income for the year ended December 31, 2025. The major classes of assets sold included Intangible assets, net of $760 million and Goodwill of $398 million. During the nine months ended September 30, 2026, Aon recognized a $20 million gain related to the prior-year sale of the NFP Wealth business, all of which was recognized in the first quarter of 2026.

8. Goodwill and Other Intangible Assets

The changes in the net carrying amount of goodwill for the nine months ended September 30, 2026 are as follows (in millions):


	Risk Capital		Human Capital		Total
Balance as of December 31, 2025	$	9,551	$	6,246	$	15,797
Goodwill related to current year acquisitions	203		12		215

Measurement period adjustments related to prior year acquisitions	(3)		—		(3)
Foreign currency translation and other	(81)		(31)		(112)
Balance as of September 30, 2026	$	9,670	$	6,227	$	15,897

Other intangible assets by asset class are as follows (in millions):


	September 30, 2026						December 31, 2025
	Gross Carrying Amount		Accumulated Amortization and Impairment		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization and Impairment		Net Carrying Amount
Customer-related and contract-based	$	7,972	$	3,053	$	4,919	$	7,738	$	2,644	$	5,094
Tradenames	718		175		543		716		121		595
Technology and other	366		341		25		369		331		38
Total	$	9,056	$	3,569	$	5,487	$	8,823	$	3,096	$	5,727

The estimated future amortization for finite-lived intangible assets as of September 30, 2026 is as follows (in millions):


Remainder of 2026	$	174
2027	652
2028	598
2029	550
2030	502
2031	452
Thereafter	2,559

Total	$	5,487

9. Debt

Term Loans

On September 18, 2026, Aon North America, Inc. entered into a credit agreement in which lenders committed to provide unsecured delayed draw term loan facilities in an aggregate principal amount of $4.0 billion, consisting of a $2.0 billion term loan facility maturing two years after the closing date of the USI Acquisition and a $2.0 billion term loan facility maturing three years after the closing date of the USI Acquisition. The Company intends to use the net proceeds, together with the proceeds of the notes issued on September 17, 2026 described below, for general corporate purposes, including to pay the cash consideration with respect to the USI Acquisition, to settle certain acquired USI debt, and to pay related fees and expenses. The borrowings must be made in a single drawing on the closing date of the acquisition, and can be prepaid at any time without penalty or premium.

On April 25, 2024, Aon North America, Inc. drew its $2 billion delayed draw term loan. As of December 31, 2025, the term loan was paid in full.

Notes

debt, and to pay related fees and expenses. With the exception of the $2.0 billion 6.450% Senior Notes due 2056, the notes are subject to special mandatory redemption at 101% of their aggregate principal amount, plus accrued and unpaid interest, if any, if the USI Acquisition is not consummated by a specified date, subject to certain extensions, or upon the occurrence of certain other specified events indicating that the acquisition will not be consummated. Refer to Note 7 “Acquisitions and Dispositions of Businesses” for additional information.

In May 2026, Aon Corporation and Aon Global Holdings plc’s $600 million 2.850% Senior Notes due May 2027 were classified as Short-term debt and current portion of long-term debt in the Consolidated Statement of Financial Position as the date of maturity is less than one year. The Company expects to use cash flow from operations and available cash on hand to repay these Senior Notes.

In March 2026, Aon North America, Inc.’s $600 million 5.125% Senior Notes due March 2027 were classified as Short-term debt and current portion of long-term debt in the Consolidated Statement of Financial Position as the date of maturity is less than one year. The Company expects to use cash flow from operations and available cash on hand to repay these Senior Notes.

In January 2026, Aon Corporation’s $521 million 8.205% Junior Subordinated Notes due January 2027 were classified as Short-term debt and current portion of long-term debt in the Consolidated Statement of Financial Position as the date of maturity is in less than one year. The Company expects to use cash flow from operations and available cash on hand to repay these Junior Subordinated Notes.

On January 15, 2026, Aon Global Limited issued a notice of redemption to holders of its 2.875% Senior Notes for the redemption of all €500 million ($593 million at February 14, 2026 exchange rates) outstanding aggregate principal amount of the notes, plus accrued and unpaid interest, originally set to mature in May 2026. On February 14, 2026, these notes were repaid in full.

In December 2025, Aon Global Limited’s $750 million 3.875% Senior Notes matured and were repaid in full.

Revolving Credit Facility

As of September 30, 2026, Aon plc had one primary committed credit facility outstanding: its $3.0 billion multi-currency U.S. credit facility expiring in September 2031 (the “Revolving Credit Facility”). The Revolving Credit Facility, effective September 18, 2026, replaced Aon plc’s prior $1.0 billion multi-currency U.S. credit facility expiring in September 2027 and $1.0 billion multi-currency U.S. credit facility expiring in October 2028.

The Revolving Credit Facility and the delayed draw term loans include customary representations, warranties, and covenants, including financial covenants that require Aon to maintain specified ratios of adjusted consolidated EBITDA to consolidated interest expense and consolidated debt to adjusted consolidated EBITDA, in each case, tested quarterly. Aon did not have borrowings under the revolving credit facility or the delayed draw term loans as of September 30, 2026 or December 31, 2025. Aon was in compliance with the financial covenants and all other covenants contained therein during the rolling 12 months ended September 30, 2026 and December 31, 2025.

Commercial Paper

Aon Corporation has established a U.S. commercial paper program (the “U.S. Program”) and Aon Global Holdings plc has established a European multi-currency commercial paper program (the “European Program” and, together with the U.S. Program, the “Commercial Paper Programs”). Commercial paper may be issued in aggregate principal amounts of up to approximately $1.3 billion under the U.S. Program and €625 million ($712 million at September 30, 2026 exchange rates and $736 million at December 31, 2025 exchange rates) under the European Program, not to exceed the amount of the Company’s Revolving Credit Facility, which was $3.0 billion at September 30, 2026. The aggregate capacity of the Commercial Paper Program remains fully backed by the Company’s Revolving Credit Facility. The U.S. Program was fully and unconditionally guaranteed by Aon plc, Aon Global Limited, Aon North America, Inc., and Aon Global Holdings plc and the European Program was fully and unconditionally guaranteed by Aon plc, Aon Global Limited, Aon North America, Inc., and Aon Corporation.

The Company had no commercial paper outstanding as of September 30, 2026 and December 31, 2025.

The weighted average commercial paper outstanding and its related interest rates are as follows (in millions, except percentages):


	Three Months Ended September 30,						Nine Months Ended September 30,
	2026			2025			2026			2025
Weighted average commercial paper outstanding	$	87		$	347		$	160		$	467
Weighted average interest rate of commercial paper outstanding	4.11		%	4.02		%	3.91		%	4.23		%

10. Income Taxes

The effective tax rate on Net income was 20.6% and 20.7% for the three and nine months ended September 30, 2026, respectively. The effective tax rate on Net income was 21.3% and 19.8% for the three and nine months ended September 30, 2025, respectively.

For the three months ended September 30, 2026, the quarter-to-date tax rate was primarily driven by the geographical distribution of income and an unfavorable impact from discrete items. For the nine months ended September 30, 2026, the year-to-date tax rate was primarily driven by the geographical distribution of income and certain discrete items, including the favorable impact of a capital loss offset by the unfavorable impact of other discrete items.

For the three and nine months ended September 30, 2025, the quarter-to-date tax rate was primarily driven by the geographical distribution of income and certain discrete items. The year-to-date tax rate was primarily driven by the geographical distribution of income and certain discrete items, including the tax benefit associated with the sale of certain assets and liabilities and share-based payments partially offset by the unfavorable impact of other discrete items.

11. Shareholders’ Equity

Ordinary Shares

Aon has a share repurchase program authorized by the Company’s Board of Directors (“the Repurchase Program”). The Repurchase Program was established in April 2012 with $5.0 billion in authorized repurchases, and was increased by $5.0 billion in authorized repurchases in each of November 2014, June 2017, and November 2020. In each of February 2022 and June 2026, authorized repurchases were increased by an additional $7.5 billion, for a total of $35.0 billion in repurchase authorizations.

Under the Repurchase Program, the Company’s class A ordinary shares may be repurchased through the open market or in privately negotiated transactions, from time to time, based on prevailing market conditions, and will be funded from available capital.

The following table summarizes the Company’s share repurchase activity (in millions, except per share data):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Shares repurchased	—		0.7		3.4		2.0
Average price per share	$	—	$	362.00	$	321.61	$	371.71

Repurchase costs recorded to Retained Earnings	$	—	$	250	$	1,100	$	750

At September 30, 2026, the remaining authorized amount for share repurchases under the Repurchase Program was approximately $7.7 billion. Under the Repurchase Program, the Company has repurchased a total of 178.3 million shares for an aggregate cost of approximately $27.3 billion.

Weighted Average Ordinary Shares

Weighted average ordinary shares outstanding are as follows (in millions):


	Three Months Ended September 30,		Nine Months Ended September 30,
	2026	2025	2026	2025
Basic weighted average ordinary shares outstanding	212.3	215.7	213.3	216.1
Dilutive effect of potentially issuable shares	0.7	1.0	0.8	1.2
Diluted weighted average ordinary shares outstanding	213.0	216.7	214.1	217.3

Potentially issuable shares are not included in the computation of Diluted net income per share attributable to Aon shareholders if their inclusion would be antidilutive. There were 0.1 million and 0.5 million shares excluded from the calculation for the three and nine months ended September 30, 2026, respectively. There were an insignificant number of shares excluded from the calculation for the three and nine months ended September 30, 2025.

Accumulated Other Comprehensive Loss

Changes in Accumulated other comprehensive loss by component, net of related tax, are as follows (in millions):


	Change in Fair Value of Financial Instruments (1)		Foreign Currency Translation Adjustments		Postretirement Benefit Obligation (2)		Total
Balance at January 1, 2026	$	78	$	(1,225)	$	(2,696)	$	(3,843)


Other comprehensive income (loss) before reclassifications, net	19		(159)		(5)		(145)
Amounts reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive income (loss)	(3)		2		111		110
Tax expense	1		—		(28)		(27)
Amounts reclassified from accumulated other comprehensive income (loss), net	(2)		2		83		83
Net current period other comprehensive income (loss)	17		(157)		78		(62)
Balance at September 30, 2026	$	95	$	(1,382)	$	(2,618)	$	(3,905)


	Change in Fair Value of Financial Instruments (1)		Foreign Currency Translation Adjustments		Postretirement Benefit Obligation (2)		Total
Balance at January 1, 2025	$	74	$	(2,051)	$	(2,768)	$	(4,745)


Other comprehensive income (loss) before reclassifications, net	10		752		(8)		754
Amounts reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive income	(8)		—		110		102
Tax expense	2		—		(28)		(26)
Amounts reclassified from accumulated other comprehensive income, net	(6)		—		82		76
Net current period other comprehensive income (loss)	4		752		74		830
Balance at September 30, 2025	$	78	$	(1,299)	$	(2,694)	$	(3,915)

(1)Reclassifications from this category included in Accumulated other comprehensive loss are recorded in Total revenue, Interest expense, and Compensation and benefits in the Condensed Consolidated Statements of Income. Refer to Note 13 “Derivatives and Hedging” for further information regarding the Company’s derivative and hedging activity.

(2)Reclassifications from this category included in Accumulated other comprehensive loss are recorded in Other income (expense) in the Condensed Consolidated Statements of Income.

Subsequent Event

On October 9, 2026, Aon announced a $0.820 per share dividend payable November 13, 2026.

12. Employee Benefits

The following table provides the components of the net periodic cost recognized in the Condensed Consolidated Statements of Income for Aon’s significant U.K., U.S., and other major pension plans, which are located in the Netherlands and Canada. Service cost is reported in Compensation and benefits and all other components are reported in Other income (expense) as follows (in millions):


	Three Months Ended September 30,
	U.K.				U.S.				Other
	2026		2025		2026		2025		2026		2025
Service cost	$	—	$	—	$	—	$	—	$	—	$	—
Interest cost	37		38		23		26		11		10
Expected return on plan assets, net of administration expenses	(48)		(46)		(30)		(30)		(15)		(13)
Amortization of prior-service cost	—		1		—		—		—		—
Amortization of net actuarial loss	20		23		11		8		4		4
Net periodic cost	$	9	$	16	$	4	$	4	$	—	$	1



	Nine Months Ended September 30,
	U.K.				U.S.				Other
	2026		2025		2026		2025		2026		2025
Service cost	$	—	$	—	$	—	$	—	$	—	$	—
Interest cost	110		114		70		77		34		29
Expected return on plan assets, net of administration expenses	(144)		(134)		(89)		(90)		(45)		(39)
Amortization of prior-service cost	2		2		—		—		—		—
Amortization of net actuarial loss	60		67		33		26		11		11
Net periodic cost	$	28	$	49	$	14	$	13	$	—	$	1

Contributions

Assuming no additional contributions are agreed to with, or required by, the pension plan trustees, the Company expects to make total cash contributions of approximately $1 million, $81 million, and $11 million (at December 31, 2025 exchange rates) to its significant U.K., U.S., and other major pension plans, respectively, during 2026. The following table summarizes contributions made to the Company’s significant pension plans (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Contributions to U.K. pension plans	$	1	$	1	$	2	$	3
Contributions to U.S. pension plans	25		23		70		67
Contributions to other major pension plans	2		2		8		10
Total contributions	$	28	$	26	$	80	$	80

13. Derivatives and Hedging

The Company is exposed to market risks, including changes in foreign currency exchange rates and interest rates. To manage the risk related to these exposures, the Company enters into various derivative instruments that reduce these risks by creating offsetting exposures. The Company does not enter into derivative transactions for trading or speculative purposes.

Foreign Exchange Risk Management

The Company is exposed to foreign exchange risk when it earns revenues, pays expenses, enters into monetary intercompany transfers or other transactions denominated in a currency that differs from its functional currency.

Cash flow hedges primarily consist of foreign exchange derivatives. The Company uses foreign exchange derivatives, typically forward contracts and options, to reduce its overall exposure to the effects of currency fluctuations on cash flows. These exposures are hedged, on average, for less than two years. These derivatives are accounted for as hedges, and changes in fair value are recorded each period in Other comprehensive income (loss) in the Condensed Consolidated Statements of Comprehensive Income.

In April 2026, the Company entered into three cross-currency interest rate swap transactions with an aggregate notional amount of $1.0 billion, including two $300 million swaps with 7-year and 10-year maturities and one $400 million swap with a 5-year maturity. The Company uses cross-currency interest rate swaps to hedge a designated portion of its net investments in certain euro-denominated foreign subsidiaries against foreign exchange risk and accounts for these instruments as net investment hedges. For a net investment hedge, the change in fair value of the hedging instrument due to changes in foreign currency exchange rates is recorded in Foreign currency translation adjustments, a component of Accumulated Other Comprehensive Income, to the extent it is effective as a hedge. The Company has elected to assess hedge effectiveness through the use of the spot method based on changes in fair value attributable only to changes in spot exchange rates. The cross-currency basis spread is excluded from the hedge effectiveness assessment. The Company assessed the hedges relationships and determined that they continued to qualify for hedge accounting as of September 30, 2026. The interest rate spread component is recognized using a systematic and rational method over the life of the hedging instruments in Interest expenses. The bi-annual interest settlements recognized are classified as operating activities in the Condensed Consolidated Statements of Cash Flows. Cash flows associated with the exchange of notional principal at the maturity of the swaps will be classified as investing activities in the Condensed Consolidated Statements of Cash Flows. If the net investments are sold or substantially liquidated, the balance of the Foreign currency translation adjustments accumulated in Other comprehensive income (loss) is recognized within Net income.

The Company also uses foreign exchange derivatives, typically forward contracts and options, to economically hedge the currency exposure of the Company’s global liquidity profile, including monetary assets or liabilities that are denominated in a non-functional currency of an entity, typically on a rolling 90-day basis, but may be for up to one year in the future. These derivatives are not accounted for as hedges, and changes in fair value are recorded each period in Other income (expense) in the Condensed Consolidated Statements of Income.

The notional and fair values of derivative instruments are as follows (in millions):


	Notional Amount				Net Amount of Derivative Assets Presented in the Statements of Financial Position (1)				Net Amount of Derivative Liabilities Presented in the Statements of Financial Position (2)
	September 30, 2026		December 31, 2025		September 30, 2026		December 31, 2025		September 30, 2026		December 31, 2025
Foreign exchange contracts
Accounted for as hedges
Cash flow hedges	$	450	$	452	$	5	$	19	$	5	$	4
Net investment hedges	1,000		—		5		—		2		—
Not accounted for as hedges (3)	584		467		1		3		1		—
Total	$	2,034	$	919	$	11	$	22	$	8	$	4

(1)Included within Other current assets ($6 million at September 30, 2026 and $21 million at December 31, 2025) or Other non-current assets ($5 million at September 30, 2026 and $1 million at December 31, 2025).

(2)Included within Other current liabilities ($5 million at September 30, 2026 and $3 million at December 31, 2025) or Other non-current liabilities ($3 million at September 30, 2026 and $1 million at December 31, 2025).

(3)These contracts typically are for 90-day durations and executed close to the last day of the most recent reporting month, thereby resulting in nominal fair values at the balance sheet date.

The amounts of derivative gains (losses) recognized in Other comprehensive income (loss) in the Condensed Consolidated Statements of Comprehensive Income are as follows (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Cash flow hedges (1)	$	35	$	(9)	$	27	$	13
Net investment hedges (2)	—		—		2		—
Total	$	35	$	(9)	$	29	$	13

(1)Reflects $38 million settlements on cash flow hedges entered into and closed within the three months ended September 30, 2026.

(2)Amounts represent gains recognized in Other comprehensive income (loss) during the period. As of September 30, 2026, the cumulative amount of gains after taxes recognized related to net investment hedges as Foreign currency translation adjustments in Accumulated other comprehensive income (loss) was $100 million. Refer to Note 11 “Shareholders’ Equity” for additional information regarding the Company’s Accumulated other comprehensive income (loss).

The amounts of derivative gains (losses) reclassified from Accumulated other comprehensive loss (income) (“AOCI”) to the Condensed Consolidated Statements of Income are as follows (in millions):


	Classification of gains (losses) reclassified from AOCI	Three Months Ended September 30,				Nine Months Ended September 30,
		2026		2025		2026		2025
Cash flow hedges	Total revenue	$	—	$	2	$	6	$	7
	Compensation and benefits	(2)		—		(4)		—
	Interest expense	—		—		1		1
Total		$	(2)	$	2	$	3	$	8

The cross-currency basis spread that was excluded from the Company’s hedge effectiveness assessment of its net investment hedge was a gain of $3 million and $5 million for the three and nine months ended September 30, 2026.

The Company estimates that approximately $1 million of pretax loss currently included within Accumulated other comprehensive loss will be reclassified into earnings in the next twelve months.

During the three and nine months ended September 30, 2026, the Company recorded a gain of $2 million and a loss of $2 million, respectively, in Other income (expense) for foreign exchange derivatives not designated or qualifying as hedges. During the three and nine months ended September 30, 2025, the Company recorded a loss of $5 million and a gain of $32 million, respectively, in Other income (expense) for foreign exchange derivatives not designated or qualifying as hedges.

14. Fair Value Measurements and Financial Instruments

Accounting standards establish a three-tier fair value hierarchy that prioritizes the inputs used in measuring fair values as follows:

•Level 1 — observable inputs such as quoted prices for identical assets in active markets;

•Level 2 — inputs other than quoted prices for identical assets in active markets, that are observable either directly or indirectly; and

•Level 3 — unobservable inputs in which there is little or no market data which requires the use of valuation techniques and the development of assumptions.

The following methods and assumptions are used to estimate the fair values of the Company’s financial instruments:

Money market funds consist of institutional prime, treasury, and government money market funds. The Company reviews treasury and government money market funds to obtain reasonable assurance that the fund net asset value is $1 per share, and reviews the floating net asset value of institutional prime money market funds for reasonableness.

Equity investments consist of equity securities and equity derivatives valued using the closing stock price on a national securities exchange. Over-the-counter equity derivatives are valued using observable inputs such as underlying prices of the underlying security and volatility. On a sample basis, the Company reviews the listing of Level 1 equity securities in the portfolio, agrees the closing stock prices to a national securities exchange, and independently verifies the observable inputs for Level 2 equity derivatives and securities.

Fixed income investments consist of certain categories of bonds and derivatives. Corporate, government, and agency bonds are valued by pricing vendors who estimate fair value using recently executed transactions and proprietary models based on observable inputs, such as interest rate spreads, yield curves, and credit risk. Asset-backed securities are valued by pricing vendors who estimate fair value using DCF models utilizing observable inputs based on trade and quote activity of securities with similar features. Fixed income derivatives are valued by pricing vendors using observable inputs such as interest rates and yield curves. The Company obtains an understanding of the models, inputs, and assumptions used in developing prices provided by its vendors through discussions with the fund managers. The Company independently verifies the observable inputs, as well as assesses assumptions used for reasonableness based on relevant market conditions and internal Company guidelines. If an assumption is deemed unreasonable, based on internal Company guidelines, it is then reviewed by management and the fair value estimate provided by the vendor is adjusted, if deemed appropriate. These adjustments do not occur frequently and historically are not material to the fair value estimates used in the Condensed Consolidated Financial Statements.

Derivatives are carried at fair value, based upon industry standard valuation techniques that use, where possible, current market-based or independently sourced pricing inputs, such as interest rates, currency exchange rates, or implied volatility.

Debt is carried at outstanding principal balance, less any unamortized issuance costs, discount or premium. Fair value is based on quoted market prices or estimates using DCF analyses based on current borrowing rates for similar types of borrowing arrangements.

The following tables present the categorization of the Company’s assets and liabilities that are measured at fair value on a recurring basis at September 30, 2026 and December 31, 2025 (in millions):


	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at September 30, 2026
Assets
Money market funds (1)	$	17,318	$	—	$	—	$	17,318
Other investments
Government bonds	$	—	$	1	$	—	$	1
Derivatives (2)
Cash flow hedges	$	—	$	21	$	—	$	21
Net investment hedges	$	—	$	5	$	—	$	5
Not accounted for as hedges	$	—	$	1	$	—	$	1
Liabilities
Derivatives (2)
Cash flow hedges	$	—	$	21	$	—	$	21
Net investment hedges	$	—	$	2	$	—	$	2
Not accounted for as hedges	$	—	$	1	$	—	$	1


	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2025
Assets
Money market funds (1)	$	4,998	$	—	$	—	$	4,998
Other investments

Government bonds	$	—	$	1	$	—	$	1

Derivatives (2)
Cash flow hedges	$	—	$	42	$	—	$	42
Net investment hedges	$	—	$	—	$	—	$	—
Not accounted for as hedges	$	—	$	3	$	—	$	3
Liabilities			0
Derivatives (2)
Cash flow hedges	$	—	$	27	$	—	$	27
Net investment hedges	$	—	$	—	$	—	$	—
Not accounted for as hedges	$	—	$	—	$	—	$	—

(1)Included within Fiduciary assets or Short-term investments in the Condensed Consolidated Statements of Financial Position, depending on their nature and initial maturity.

(2)Refer to Note 13 “Derivatives and Hedging” for additional information regarding the Company’s derivatives and hedging activity.

There were no transfers of assets or liabilities between fair value hierarchy levels in the three and nine months ended September 30, 2026 or 2025. The Company recognized no realized or unrealized gains or losses in the Condensed Consolidated Statements of Income during the three and nine months ended September 30, 2026 or 2025 related to assets and liabilities measured at fair value using unobservable inputs.

The fair value of debt is classified as Level 2 of the fair value hierarchy. The following table provides the carrying value and fair value for the Company’s term debt (in millions):


	September 30, 2026				December 31, 2025
	Carrying Value		Fair Value		Carrying Value		Fair Value
Current portion of long-term debt	$	1,722	$	1,720	$	588	$	589
Long-term debt	$	26,319	$	24,629	$	14,660	$	14,158

15. Claims, Lawsuits, and Other Contingencies

Legal

Aon and its subsidiaries are subject to numerous claims, tax assessments, lawsuits, and proceedings that arise in the ordinary course of business, which frequently include E&O claims. The damages claimed in these matters are or may be substantial, including, in many instances, claims for punitive, treble, or extraordinary damages. While Aon maintains meaningful E&O insurance and other insurance programs to provide protection against certain losses that arise in such matters, Aon has exhausted or materially depleted its coverage under some of the policies that protect the Company and, consequently, is self-insured or materially self-insured for some claims, including coverage from Aon’s self-insurance program. Accruals for these exposures, and related insurance receivables, when applicable, are included in the Condensed Consolidated Statements of Financial Position and have been recognized in Other general expense in the Condensed Consolidated Statements of Income to the extent that losses are deemed probable and are reasonably estimable. These amounts are adjusted from time to time as developments warrant. Matters that are not probable and reasonably estimable are not accrued for in the financial statements.

The Company’s contingencies and exposures are subject to significant uncertainties, and the determination of likelihood of a loss and estimating any such loss can be complex. The Company is therefore, in certain matters, unable to estimate the range of reasonably possible loss. Although management at present believes that the ultimate outcome of such matters, individually or in the aggregate, will not have a material adverse effect on the consolidated financial position of Aon, legal proceedings are subject to inherent uncertainties and unfavorable rulings or other events. Unfavorable resolutions could include substantial monetary or punitive damages imposed on Aon or its subsidiaries. If unfavorable outcomes of these matters were to occur,

future results of operations or cash flows for any particular quarterly or annual period could be materially adversely affected. Certain significant legal proceedings involving us or our subsidiaries are described below.

Current Matters

Aon faces legal action arising out of a fatal plane crash in November 2016. Aon U.K. Limited placed an aviation civil liability reinsurance policy for the Bolivian insurer of the airline. After the crash, the insurer determined that there was no coverage under the airline’s insurance policy due to the airline’s breach of various policy conditions. In November 2018, the owner of the aircraft filed a claim in Bolivia against Aon, the airline, the insurer and the insurance broker. The claim is for $16 million plus any liability the owner has to third parties. In November 2019, a federal prosecutor in Brazil filed a public civil action naming three Aon entities as defendants, along with the airline, the insurer and the lead reinsurer. That claim seeks pecuniary damages for families affected by the crash in the sum of $300 million; or, in the alternative, $50 million; or, in the alternative, $25 million; plus “moral damages” of an equivalent sum. Separately, in March 2020, the Brazilian Federal Senate invited Aon to give evidence to a Parliamentary Commission of Inquiry in an investigation into the accident. Aon cooperated with that inquiry. In August 2020, 43 individuals (surviving passengers and estates of the deceased) filed a motion in the Circuit Court of the 11th Judicial Circuit in and for Miami-Dade County, Florida, seeking permission to commence proceedings against Aon (and the insurer and reinsurers) for claims totaling $844 million. In December 2022, the High Court in England granted an anti-suit injunction, restricting the 43 individuals who previously filed a motion in the Circuit Court of the 11th Judicial Circuit in and for Miami Dade County, Florida, from continuing litigation in the Circuit Court of the 11th Judicial Circuit against Aon. In June 2025, the 43 individuals filed a counterclaim against Aon in the UK seeking damages. The claim is alleged to be governed in the alternative by the laws of three different jurisdictions and asserts damages in the amount of $17 million. The claim alleges that certain aspects of the damages have yet to be calculated. Aon believes that it has meritorious defenses and intends to vigorously defend itself against the remaining claims.

Certain of the Company’s clients and counterparties have initiated or indicated that they may initiate legal proceedings against the Company following allegations in July 2023 that fraudulent letters of credit were issued in the name of third-party banks in connection with transactions for which capital was arranged by Vesttoo Ltd. (“Vesttoo”). Vesttoo was one of the third parties that identified capital providers to collateralize insurance and reinsurance obligations of the Company’s clients and counterparties, including in connection with property and casualty insurance, cyber insurance, and collateral protection insurance. In certain transactions in which Vesttoo identified third party capital providers to collateralize reinsurance obligations, including transactions in which the Company or its affiliates provided brokerage or other services, some letters of credit from third party banks are alleged to have been fraudulent. The pending or threatened legal proceedings against the Company by clients and counterparties allege, among other theories of liability, that in certain circumstances the Company failed to comply with its alleged duty to procure appropriate letters of credit. In particular, on November 30, 2023, Clear Blue Insurance Company and certain of its affiliates (collectively, “Clear Blue”) filed a lawsuit in New York State Supreme Court against Aon plc and Aon Insurance Managers (Bermuda) Ltd. alleging such claims. Clear Blue and Aon jointly filed a stipulation of dismissal with prejudice on September 26, 2025. On August 8, 2025, the liquidating trust formed to pursue claims on behalf of the Vesttoo bankruptcy estate filed a complaint in the U.S. Bankruptcy Court of Delaware against the Company and certain of its subsidiaries, among other parties. The trust’s complaint alleges, among other theories of liability, that Aon is liable for having induced parties into taking on collateral protection insurance risks, notwithstanding the fact that fraudulent letters of credit had been arranged by Vesttoo employees and co-conspirators. Aon believes that it has meritorious defenses and intends to vigorously defend itself against such claims, and on November 17, 2025, Aon filed a motion to dismiss the matter. On June 23, 2026 the Vesttoo bankruptcy estate filed its opposition to Aon’s motion to dismiss. In the fourth quarter of 2023, the Company recognized actual or anticipated legal settlement expenses in connection with these matters of $197 million, of which a potentially significant amount may be recoverable in future periods. In the third quarter of 2025, certain legal settlement expenses and recoveries were recognized resulting in a $23 million reduction of this amount. Aon has sought and will continue to seek recourse against responsible third parties where appropriate. In addition, in August 2023, joint provisional liquidators were appointed over one of the Company’s subsidiaries in Bermuda with respect to segregated accounts that were impacted by the allegedly fraudulent letters of credit. The joint provisional liquidators were released from their appointment on July 3, 2024. Aon continues to cooperate with regulators in Bermuda, and other regulatory authorities could initiate investigations or proceedings against the Company or third parties.

Guarantees and Indemnifications

The Company provides a variety of guarantees and indemnifications to its customers and others. The maximum potential amount of future payments represents the notional amounts that could become payable under the guarantees and indemnifications if there were a total default by the guaranteed parties, without consideration of possible recoveries under recourse provisions or other methods. These amounts may bear no relationship to the expected future payments, if any, for these guarantees and indemnifications. Any anticipated amounts payable are included in the Condensed Consolidated Financial Statements, and are recorded at fair value.

The Company expects that, as prudent business interests dictate, additional guarantees and indemnifications may be issued from time to time.

Guarantee of Registered Securities

On June 22, 2023, Aon plc, Aon Global Limited, Aon Global Holdings plc, Aon Corporation, and Aon North America, Inc., and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”), as applicable, entered into supplemental indentures, each dated June 22, 2023, amending each of the following indentures (as amended, supplemented or modified from time to time) to add for the benefit of the holders of the instruments issued thereunder a full and unconditional guarantee of Aon North America, Inc. thereunder: (i) Second Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Amended and Restated Indenture, dated April 2, 2012, amending and restating the Indenture, dated January 13, 1997); (ii) Second Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Amended and Restated Indenture, dated April 2, 2012, amending and restating the Indenture, dated September 10, 2010); (iii) Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Indenture, dated December 12, 2012); (iv) Second Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Amended and Restated Indenture, dated May 20, 2015, amending and restating the Indenture, dated May 24, 2013); (v) Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Indenture, dated November 13, 2015); and (vi) Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Indenture, dated December 3, 2018).

On February 28, 2024, Aon plc, Aon Corporation, Aon Global Holdings plc, and Aon Global Limited (together with Aon plc, Aon Corporation and Aon Global Holdings, plc, the “Guarantors”), Aon North America, Inc. and the Trustee entered into an indenture and first supplemental indenture, each dated March 1, 2024, to add for the benefit of the holders of the instruments issued thereunder a full and unconditional guarantee by the Guarantors of the obligations of Aon North America, Inc. thereunder.

Letters of Credit

Aon has entered into a number of arrangements whereby the Company’s performance on certain obligations is guaranteed by a third party through the issuance of LOCs. The Company had total LOCs outstanding of approximately $127 million at September 30, 2026, and $124 million at December 31, 2025. These LOCs cover the beneficiaries related to certain of Aon’s U.S. and Canadian secure non-qualified pension plan schemes, reinsurance obligations related to Aon’s own E&O liability insurance program, and secure deductible retentions for Aon’s own workers compensation program. The Company has also obtained LOCs to cover contingent payments for taxes and other business obligations to third parties, and other guarantees for miscellaneous purposes at its international subsidiaries.

Premium Payments

The Company has certain contractual contingent guarantees for premium payments owed by clients to certain insurance companies. The maximum exposure with respect to such contractual contingent guarantees was approximately $118 million at September 30, 2026 compared to $196 million at December 31, 2025.

16. Segment Information

Reportable segments were determined using a management approach. They are consistent with how the CODM assesses the performance of the Company and allocates resources based on two segments: Risk Capital and Human Capital. This segmentation allows the CODM, who is our Chief Executive Officer and President, to align the assessment of performance and allocation of resources, based on segment operating income and operating margin, with how the Company addresses client need, accelerating its Aon United strategy through growth in Risk Capital and Human Capital and maximizing value for Aon and its shareholders.

Risk Capital supports clients through its Commercial Risk and Reinsurance solution lines. Commercial Risk includes insurance and specialty brokerage, global risk consulting, captives management, and Affinity programs. Reinsurance includes treaty reinsurance, facultative reinsurance, the Strategy and Technology Group, and capital markets.

Human Capital supports clients through its Health and Wealth solution lines. Health includes consulting and brokerage, consumer benefits solutions, and talent advisory services. Wealth includes retirement consulting, pension administration, and

investments consulting. Refer to Note 3 “Revenue from Contracts with Customers” for information on revenue by principal service line.

The Company does not present assets by reportable segment and this information is not used by the CODM to assess the performance of, or allocate resources to the Company’s reportable segments. As such, segment assets are not provided to the CODM.

The following tables include information about Aon’s reportable segments, including total segment revenue, total consolidated revenue, segment operating income, and income before income taxes:


	Three Months Ended September 30,
	Risk Capital		Human Capital		Corporate/Eliminations		Total Consolidated
	2026	2025	2026	2025	2026	2025	2026	2025
Revenue
Total revenue (1)	$2,682	$2,525	$1,421	$1,475	$(2)	$(3)	$4,101	$3,997
Expenses
Compensation and benefits	1,526	1,455	727	776	22	28	2,275	2,259
Information technology	103	94	52	44	1	2	156	140
Premises	54	56	28	28	1	1	83	85
Other expenses (2)	391	335	268	295	119	67	778	697
Total operating expenses	2,074	1,940	1,075	1,143	143	98	3,292	3,181
Operating income	$608	$585	$346	$332	$(145)	$(101)	$809	$816
Operating margin	22.7%	23.2%	24.3%	22.5%			19.7%	20.4%

Non-operating income (expense)
Interest income							24	—
Interest expense							(206)	(206)
Other income (expense)							(15)	(13)
Income before income taxes							$612	$597


	Nine Months Ended September 30,
	Risk Capital		Human Capital		Corporate/Eliminations		Total Consolidated
	2026	2025	2026	2025	2026	2025	2026	2025
Revenue
Total revenue (1)	$9,190	$8,582	$4,204	$4,311	$(13)	$(12)	$13,381	$12,881
Expenses
Compensation and benefits	4,686	4,457	2,201	2,346	52	65	6,939	6,868
Information technology	305	272	149	134	8	6	462	412
Premises	163	162	83	87	3	3	249	252




Other expenses (2)	1,130	1,045	815	892	347	276	2,292	2,213
Total operating expenses	6,284	5,936	3,248	3,459	410	350	9,942	9,745
Operating income	$2,906	$2,646	$956	$852	$(423)	$(362)	$3,439	$3,136
Operating margin	31.6%	30.8%	22.7%	19.8%			25.7%	24.3%

Non-operating income (expense)
Interest income							41	5
Interest expense							(564)	(624)
Other income (expense)							(27)	33
Income before income taxes							$2,889	$2,550

(1)Includes fiduciary investment income for the three and nine months ended September 30, 2026 of $67 million and $176 million, respectively, in Risk Capital and $2 million and $6 million, respectively, in Human Capital. For the three and nine months ended September 30, 2025, includes fiduciary investment income of $72 million and $201 million, respectively, in Risk Capital and $3 million and $7 million, respectively, in Human Capital.

(2)Includes expenses related to Depreciation of fixed assets, Amortization and impairment of intangible assets, Accelerating Aon United Program expenses, and Other general expenses.

Revenue

Reportable segment revenue includes inter-segment revenue which is eliminated as a Corporate adjustment to reconcile to the Company's Consolidated Total revenue. The following table presents inter-segment revenue:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Risk Capital	$	—	$	—	$	5	$	5
Human Capital	2		3		8		7
Total	$	2	$	3	$	13	$	12

Segment Operating Expenses

The Company’s segment operating expenses are generally attributed to the function of the business. Segment expenses exclude governance costs, post-retirement benefits, and other costs that are not directly attributable to a specific segment. These expenses are considered corporate expenses or eliminations.

Non-operating Income (Expense)

The Company’s non-operating income (expense) primarily consist of Interest income, Interest expense, and Other income (expense) which are not allocated to our reportable segments, as the CODM assesses performance based on operating income results. Interest income represents income earned, net of expense, on operating cash balances, including our multi-currency cash pool, and other income producing investments. Interest income does not include interest earned on funds held on behalf of clients. If interest expense on these assets exceeds interest income for the period, the net amount is reported as interest expense for both the quarterly and year-to-date periods. Interest expense represents the cost of debt obligations and net interest expense on operating cash balances and other income-producing investments, if any. Other income (expense) consists of equity earnings (loss), realized gains or losses on the sale of investments, gains on the disposal of businesses, gains or losses on derivatives, and gains or losses on foreign currency remeasurement.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

EXECUTIVE SUMMARY OF THIRD-QUARTER 2026 FINANCIAL RESULTS

Aon plc is a leading global professional services firm providing a broad range of Risk Capital and Human Capital solutions. Through our experience, global reach, and comprehensive analytics, we help clients meet rapidly changing, increasingly complex and interconnected challenges related to risk and people. We are committed to accelerating innovation to address unmet and evolving client needs so that our clients are better informed, better advised and able to make better decisions to protect and grow their business. Management remains focused on strengthening Aon and uniting the firm with a portfolio of Risk Capital and Human Capital capabilities enabled by data and analytics and a united operating model to deliver additional insight, connectivity and efficiency.

Financial Results

The following is a summary of our third quarter of 2026 financial results.

•Revenue increased $104 million, or 3%, reflecting 6% organic revenue growth, partially offset by a 3% unfavorable impact primarily from divestitures largely due to the sales of the NFP Wealth business and Stroz Friedberg. For the first nine months of 2026, revenue increased $500 million, or 4%, compared to the prior-year period reflecting 5% organic revenue growth and a 2% favorable impact from foreign currency translation, partially offset by a 3% unfavorable impact primarily from the divestitures previously described.

◦Risk Capital revenue increased $157 million, or 6%, compared to the prior-year period. For the first nine months of 2026, Risk Capital revenue increased $608 million, or 7%, compared to the prior-year period; and

◦Human Capital revenue decreased $54 million, or 4%, compared to the prior-year period. For the first nine months of 2026, Human Capital revenue decreased $107 million, or 2%, compared to the prior-year period.

•Operating expenses increased $111 million, or 3%, compared to the prior-year period due primarily to an increase in expenses associated with 6% organic revenue growth, investments in long-term growth, and an increase in Accelerating Aon United Program expenses, partially offset by lower expenses associated with the sale of the NFP Wealth business and $20 million of net restructuring savings. For the first nine months of 2026, operating expenses increased $197 million, or 2%, compared to the prior-year period due primarily to an increase in expenses associated with 5% organic revenue growth and investments in long-term growth, as well as the unfavorable impact from foreign currency translation, partially offset by lower expenses associated with the sale of the NFP Wealth business and $70 million of net restructuring savings.

◦Risk Capital operating expenses increased $134 million, or 7%, compared to the prior-year period. For the first nine months of 2026, Risk Capital operating expenses increased $348 million, or 6%, to $6.3 billion compared to the prior-year period; and

◦Human Capital operating expenses decreased $68 million, or 6%, compared to the prior-year period. For the first nine months of 2026, Human Capital operating expenses decreased $211 million, or 6%, to $3.2 billion compared to the prior-year period.

•Operating margin decreased to 19.7% from 20.4% in the prior-year period, driven by an increase in operating expenses associated with 6% organic revenue growth, investments in long-term growth, and an increase in Accelerating Aon United program expenses, partially offset by the impact of organic revenue growth of 6% and $20 million of net restructuring savings. For the first nine months of 2026, operating margin increased to 25.7% from 24.3% in the prior-year period, driven primarily by organic revenue growth of 5% and $70 million of net restructuring savings, partially offset by an increase in operating expenses as previously described.

◦Risk Capital operating margin decreased to 22.7% from 23.2%, compared to the prior-year period. For the first nine months of 2026, Risk Capital operating margin increased to 31.6% from 30.8% compared to the prior-year period.

◦Human Capital operating margin increased to 24.3% from 22.5% compared to the prior-year period. For the first nine months of 2026, Human Capital operating margin increased to 22.7% from 19.8% compared to the prior-year period.

•Net income increased $16 million, or 3%, compared to the prior-year period, due primarily to a $24 million increase in interest income, partially offset by the factors set forth above and a $2 million increase in Other expense, as described in the Review of Consolidated Results. For the first nine months of 2026, net income increased $244 million, or 12%, compared to the prior-year period, due to the factors set forth above, partially offset by a $95 million increase in income tax expense, as described in the Review of Consolidated Results.

•Diluted earnings per share was $2.23 compared to $2.11 per share for the prior-year period. For the first nine months of 2026, Diluted earnings per share was $10.46 compared to $9.21 per share for the prior-year period.

•Cash flows provided by operating activities were $2.2 billion for the first nine months of 2026, an increase of $93 million, or 4%, from the prior-year period, as strong operating income growth offset the impact of working capital and USI-related transaction costs.

We focus on four key metrics that are not presented in accordance with U.S. GAAP that we communicate to shareholders: organic revenue growth, adjusted operating margin, adjusted diluted earnings per share and free cash flow. These non-GAAP metrics should be viewed in addition to, not instead of, the most directly comparable U.S. GAAP measures and our Condensed Consolidated Financial Statements. The following is our measure of performance against these four metrics for the third quarter of 2026:

•Organic revenue growth, a non-GAAP measure defined under the caption “Review of Consolidated Results — Organic Revenue Growth,” was 6% for the third quarter of 2026 and 5% for the first nine months of 2026, driven by net new business and ongoing strong retention.

•Adjusted operating margin, a non-GAAP measure defined under the caption “Review of Consolidated Results — Adjusted Operating Margin,” was 27.0% for the third quarter of 2026 compared to 26.3% in the prior-year period. The increase in adjusted operating margin reflects 6% organic revenue growth and $20 million of net restructuring savings, partially offset by an increase in expenses associated with 6% organic revenue growth and investments in long-term growth. For the first nine months of 2026, adjusted operating margin was 32.1% compared to 31.3% for the prior-year period. The increase primarily reflects 5% organic revenue growth and $70 million of net restructuring savings.

◦Risk Capital adjusted operating margin increased to 26.6% compared to 26.2% in the prior-year period. For the first nine months of 2026, Risk Capital adjusted operating margin increased to 34.9% compared to 34.4% in the prior-year period.

◦Human Capital adjusted operating margin increased to 31.0% compared to 30.5% in the prior-year period. For the first nine months of 2026, Human Capital adjusted operating margin increased to 29.4% compared to 28.8% in the prior-year period.

•Adjusted diluted earnings per share, a non-GAAP measure defined under the caption “Review of Consolidated Results — Adjusted Diluted Earnings per Share,” was $3.36 per share for the third quarter of 2026, compared to $3.05 per share for the prior-year period. For the first nine months of 2026, adjusted diluted earnings per share was $13.66 per share, compared to $12.22 per share for the prior-year period.

•Free cash flow, a non-GAAP measure defined under the caption “Review of Consolidated Results — Free Cash Flow,” was $1.9 billion in the first nine months of 2026, an increase of $48 million, or 3%, from the prior-year period. The increase was driven by a $93 million increase in cash flows from operations, primarily driven by strong adjusted operating income growth which offset the impact of working capital and USI transaction costs. The increase in cash flows from operations was partially offset by a $45 million increase in capital expenditures.

Pending Acquisition of USI

On August 31, 2026, Aon entered into the Merger Agreement with USI, pursuant to which Aon will acquire USI for an aggregate estimated purchase price of approximately $17 billion in cash. USI is a leading middle-market provider of property and casualty, employee benefit, personal risk, and retirement solutions, with more than 10,500 colleagues. The Company expects to fund the acquisition with new debt, a portion of which was raised in advance of the closing date, and the remainder is expected to be raised at close of the USI Acquisition. Refer to Note 9 “Debt” for additional information. The USI Acquisition is expected to be completed in the fourth quarter of 2026, subject to satisfaction or waiver of the closing conditions set forth in the Merger Agreement, including applicable regulatory approval.

REVIEW OF CONSOLIDATED RESULTS

Summary of Results

Our consolidated results (unaudited) are as follows (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Revenue
Total revenue	$	4,101	$	3,997	$	13,381	$	12,881
Expenses
Compensation and benefits	2,275		2,259		6,939		6,868
Information technology	156		140		462		412
Premises	83		85		249		252
Depreciation of fixed assets	49		47		144		140
Amortization and impairment of intangible assets	175		193		501		593
Other general expense	461		425		1,366		1,244
Accelerating Aon United Program expenses	93		32		281		236
Total operating expenses	3,292		3,181		9,942		9,745
Operating income	809		816		3,439		3,136
Interest income	24		—		41		5
Interest expense	(206)		(206)		(564)		(624)
Other income (expense)	(15)		(13)		(27)		33
Income before income taxes	612		597		2,889		2,550
Income tax expense	126		127		599		504


Net income	486		470		2,290		2,046
Less: Net income attributable to redeemable and nonredeemable noncontrolling interests	10		12		51		44
Net income attributable to Aon shareholders	$	476	$	458	$	2,239	$	2,002
Diluted net income per share attributable to Aon shareholders	$	2.23	$	2.11	$	10.46	$	9.21



Weighted average ordinary shares outstanding - diluted	213.0		216.7		214.1		217.3

Our segment results (unaudited) are as follows (in millions):


	Three Months Ended September 30,
	Risk Capital		Human Capital		Corporate/Eliminations (1)		Total Consolidated
	2026	2025	2026	2025	2026	2025	2026	2025
Revenue
Total revenue	$2,682	$2,525	$1,421	$1,475	$(2)	$(3)	$4,101	$3,997
Expenses
Compensation and benefits	1,526	1,455	727	776	22	28	2,275	2,259
Information technology	103	94	52	44	1	2	156	140
Premises	54	56	28	28	1	1	83	85




Other expenses (2)	391	335	268	295	119	67	778	697
Total operating expenses	2,074	1,940	1,075	1,143	143	98	3,292	3,181
Operating income	$608	$585	$346	$332	$(145)	$(101)	$809	$816
Operating margin	22.7%	23.2%	24.3%	22.5%			19.7%	20.4%


	Nine Months Ended September 30,
	Risk Capital		Human Capital		Corporate/Eliminations (1)		Total Consolidated
	2026	2025	2026	2025	2026	2025	2026	2025
Revenue
Total revenue	$9,190	$8,582	$4,204	$4,311	$(13)	$(12)	$13,381	$12,881
Expenses
Compensation and benefits	4,686	4,457	2,201	2,346	52	65	6,939	6,868
Information technology	305	272	149	134	8	6	462	412
Premises	163	162	83	87	3	3	249	252




Other expenses (2)	1,130	1,045	815	892	347	276	2,292	2,213
Total operating expenses	6,284	5,936	3,248	3,459	410	350	9,942	9,745
Operating income	$2,906	$2,646	$956	$852	$(423)	$(362)	$3,439	$3,136
Operating margin	31.6%	30.8%	22.7%	19.8%			25.7%	24.3%

(1)Corporate expenses/eliminations include governance costs, post-retirement benefits, and other costs that are not directly attributable to a specific segment.

(2)Includes expenses related to depreciation of fixed assets, amortization and impairment of intangible assets, Accelerating Aon United Program expenses, and other general expenses.

Revenue

Total revenue increased $104 million, or 3%, in the third quarter of 2026, compared to the prior-year period. The increase reflects 6% organic revenue growth, driven by net new business and ongoing strong retention, partially offset by a 3% unfavorable impact primarily from divestitures largely due to the sales of the NFP Wealth business and Stroz Friedberg. Risk Capital revenue increased $157 million, or 6%, and Human Capital revenue decreased $54 million, or 4%, in the third quarter of 2026 compared to the prior-year period. For the first nine months of 2026, total revenue increased $500 million, or 4%, compared to the prior-year period. The increase reflects 5% organic revenue growth and a 2% favorable impact from foreign currency translation, partially offset by a 3% unfavorable impact primarily from the divestitures previously described. Risk Capital revenue increased $608 million, or 7%, and Human Capital revenue decreased $107 million, or 2%, for the first nine months of 2026 compared to the prior-year period.

Risk Capital

Commercial Risk Solutions revenue increased $122 million, or 6%, in the third quarter of 2026, compared to $2.0 billion in the third quarter of 2025. Organic revenue growth was 7% in the third quarter of 2026, reflecting strong growth in North America and EMEA, driven by net new business and ongoing strong retention. Net market impact was slightly positive. Within North America, performance was highlighted by strong growth in M&A services and U.S. core P&C, and growth in construction. For the first nine months of 2026, revenue increased $460 million, or 7%, compared to $6.2 billion in the first nine months of 2025. Organic revenue growth was 6% in the first nine months of 2026, reflecting strong growth in North America and EMEA. Market impact was slightly positive in the first nine months of 2026. Performance in North America was highlighted by strong growth in core P&C and double-digit growth in M&A services and construction relative to the prior-year period.

Reinsurance Solutions revenue increased $35 million, or 7%, in the third quarter of 2026, compared to $537 million in the third quarter of 2025. Organic revenue growth was 7% in the third quarter of 2026, reflecting strong growth in treaty placements, driven by net new business and strong retention, and a favorable impact from the reversal of the constraint applied against prior period revenue. Net market impact was unfavorable in the quarter. For the first nine months of 2026, revenue increased $148 million, or 6%, compared to $2.4 billion in the first nine months of 2025. Organic revenue growth was 5% in the first nine months of 2026, reflecting growth in treaty placements, driven by net new business and strong retention, and strong growth in facultative placements as well as double-digit growth in our Strategy and Technology Group. Market impact was unfavorable in the first nine months of 2026.

Human Capital

Health Solutions revenue increased $57 million, or 6%, in the third quarter of 2026, compared to the third quarter of 2025. Organic revenue growth was 6% in the third quarter of 2026, reflecting strong growth in core health and benefits, including particular strength internationally, driven by net new business and ongoing strong retention, as well as growth in Talent Solutions driven by talent analytics. Net market impact was modestly positive. For the first nine months of 2026, revenue increased $196 million, or 7%, compared to $2.7 billion in the first nine months of 2025. Organic revenue growth was 5% in

the first nine months of 2026, reflecting strong growth in core health and benefits, including strength internationally, driven by net new business and ongoing strong retention.

Wealth Solutions revenue decreased $111 million, or 21%, in the third quarter of 2026, compared to $540 million in the third quarter of 2025 due primarily to the sale of the NFP Wealth business in the fourth quarter of 2025. Organic revenue growth was 4% in the third quarter of 2026, reflecting strong growth in Retirement, driven by continued demand for advisory work in the UK and EMEA related to the ongoing impact of regulatory change. For the first nine months of 2026, revenue decreased $303 million, or 19%, compared to $1.6 billion in the first nine months of 2025. The decrease was primarily driven by the unfavorable impact of divestitures, largely due to the sale of the NFP Wealth business, partially offset by 3% organic revenue growth. Organic revenue growth reflected strength in Retirement, driven by continued demand for advisory work in the UK and EMEA related to the ongoing impact of regulatory change.

Compensation and Benefits

Compensation and benefits expense increased $16 million, or 1%, in the third quarter of 2026 compared to the prior-year period, due primarily to higher expenses associated with 6% organic revenue growth and investments in long-term growth, partially offset by lower expenses from the sale of the NFP Wealth business and savings from Accelerating Aon United restructuring actions. For the first nine months of 2026, Compensation and benefits increased $71 million, or 1%, compared to the first nine months of 2025. The increase was primarily driven by expense associated with 5% organic revenue growth and investments in long-term growth, as well as an unfavorable impact from foreign currency translation, partially offset by lower expenses associated with the sale of the NFP Wealth business and savings from Accelerating Aon United restructuring actions.

Information Technology

Information technology, which represents costs associated with supporting and maintaining our infrastructure, increased $16 million, or 11%, in the third quarter of 2026 compared to the prior-year period, due primarily to Aon Business Services investments in ongoing technology initiatives. For the first nine months of 2026, Information technology increased $50 million, or 12%, compared to the first nine months of 2025. The increase was driven by Aon Business Services investments in ongoing technology initiatives.

Premises

Premises, which represents the cost of occupying offices in various locations throughout the world, decreased $2 million, or 2%, in the third quarter of 2026 compared to the prior-year period, as we continued to optimize our real estate footprint and recognize savings from Accelerating Aon United restructuring actions. For the first nine months of 2026, Premises decreased $3 million, or 1%, compared to the first nine months of 2025. The decrease was due primarily to efforts to optimize our real estate footprint and savings from Accelerating Aon United restructuring actions.

Depreciation of Fixed Assets

Depreciation of fixed assets primarily relates to software, leasehold improvements, furniture, fixtures, and equipment, computer equipment, buildings, and vehicles. Depreciation of fixed assets increased $2 million, or 4%, in the third quarter of 2026 compared to the prior-year period. For the first nine months of 2026, Depreciation of fixed assets increased $4 million, or 3%, compared to the first nine months of 2025. The increase was due to additional depreciation of new computer software related to technology initiatives.

Amortization and Impairment of Intangible Assets

Amortization and impairment of intangibles primarily relates to finite-lived customer-related and contract-based, technology, and tradename assets. Amortization and impairment of intangible assets decreased $18 million to $175 million in the third quarter of 2026 compared to the prior-year period, due primarily to the decrease in intangible assets associated with the sale of the NFP Wealth business. For the first nine months of 2026, Amortization and impairment of intangible assets decreased $92 million to $501 million, compared to the first nine months of 2025. The decrease was due primarily to the decrease in intangible assets associated with the sale of the NFP Wealth business.

Other General Expense

Other general expenses increased $36 million, or 8%, in the third quarter of 2026 due primarily to a recovery in the prior-year period associated with a legal settlement as well as USI-related transaction costs. For the first nine months of 2026, Other general expenses increased $122 million, or 10%, compared to the first nine months of 2025. The increase was due primarily to the absence of non-recurring gains and recoveries including sales of portfolios and legal settlements in the prior-year period, partially offset by lower expenses associated with the sale of the NFP Wealth business.

Accelerating Aon United Program Expenses

Accelerating Aon United Program expenses increased $61 million, or 191%, in the third quarter of 2026 due primarily to costs related to workforce optimization. For the first nine months of 2026, Accelerating Aon United Program expense increased $45 million, or 19%, compared to the first nine months of 2025, due primarily to costs related to technology initiatives and workforce optimization.

Total Operating Expenses and Operating Income

Total operating expenses increased $111 million, or 3%, in the third quarter of 2026 due primarily to an increase in expense associated with 6% organic revenue growth, investments in long-term growth, and an increase in Accelerating Aon United Program expenses, partially offset by lower expenses associated with the sale of the NFP Wealth business and $20 million of net restructuring savings. Due to the factors set forth above reflecting the increase in Total revenue of $104 million and an increase in Total operating expenses of $111 million, Total operating income decreased $7 million to $809 million in the third quarter of 2026. For the first nine months of 2026, total operating expenses increased $197 million, or 2%, due primarily to an increase in expenses associated with 5% organic revenue growth and investments in long-term growth, as well as the unfavorable impact from foreign currency translation, partially offset by lower expenses associated with the sale of the NFP Wealth business and $70 million of net restructuring savings. Due to the factors set forth above, total operating income increased $303 million to $3.4 billion for the first nine months of 2026.

Risk Capital

Total operating expenses increased $134 million, or 7%, in the third quarter of 2026. The increase was primarily due to an increase in other expenses associated with 7% organic revenue growth in both Commercial Risk Solutions and Reinsurance Solutions. Due to the factors set forth above reflecting an increase in Total revenue of $157 million and an increase in Total operating expenses of $134 million, Risk Capital operating income increased $23 million, or 4%, in the third quarter of 2026. For the first nine months of 2026, Risk Capital total operating expenses increased $348 million, or 6%. The increase was primarily due to an increase in compensation and benefits and in other expenses. The increase in compensation and benefits was due to an increase in expense associated with 6% and 5% organic revenue growth in Commercial Risk Solutions and Reinsurance Solutions, respectively, partially offset by restructuring savings. The increase in other expenses was primarily due to the absence of non-recurring gains, including sales of portfolios in the prior-year period. Due to the factors set forth above, Risk Capital operating income increased $260 million, or 10%, for the first nine months of 2026.

Human Capital

Total operating expenses decreased $68 million, or 6%, in the third quarter of 2026. The decrease was primarily due to a decrease in compensation and benefits and other expenses. The decrease in compensation and benefits was due to lower expenses associated with the sale of the NFP Wealth business, partially offset by an increase in expense associated with 6% and 4% organic revenue growth in Health Solutions and Wealth Solutions, respectively. The decrease in other expenses was primarily due to a non-recurring recovery in the prior-year period related to legal settlements as well as lower amortization and impairment of intangible assets associated with the sale of the NFP Wealth business. Due to the factors set forth above, Human Capital operating income increased $14 million, or 4%, in the third quarter of 2026. For the first nine months of 2026, Human Capital total operating expenses decreased $211 million, or 6%. The decrease was primarily due to a decrease in both compensation and benefits and other expenses. The decrease in compensation and benefits was due to lower expenses associated with the sale of the NFP Wealth business, partially offset by an increase in expense associated with 5% and 3% organic revenue growth in Health Solutions and Wealth Solutions, respectively. The decrease in other expenses was primarily due to lower amortization and impairment of intangible assets associated with the sale of the NFP Wealth business. Due to the factors set forth above, Human Capital operating income increased $104 million, or 12%, for the first nine months of 2026.

Interest Income

Interest income represents income earned, net of expense, on operating cash balances and other income-producing investments. Interest income does not include interest earned on funds held on behalf of clients. If interest expense on these assets exceeds interest income for the period, the net amount is reported as interest expense for both the quarterly and year-to-date periods. During the third quarter of 2026, interest income increased $24 million to $24 million compared to the prior-year period, primarily reflecting higher cash balances as a result of the net proceeds raised from debt issuance. For the first nine months of 2026, interest income increased $36 million to $41 million compared to the prior-year period, primarily reflecting higher average cash balances throughout the period as a result of proceeds from the sale of the NFP Wealth business and debt raised ahead of the USI Acquisition.

Interest Expense

Interest expense, which represents the cost of our debt obligations, was flat during the third quarter of 2026 compared to the prior-year period. Lower average debt balances during much of the quarter were offset by interest expense associated with debt issued near the end of the quarter to fund the USI Acquisition. For the first nine months of 2026, interest expense decreased $60 million to $564 million compared to the prior-year period, primarily reflecting lower average total debt throughout the period.

Other Income (Expense)

Other expense was $15 million for the third quarter of 2026 compared to other expense of $13 million for the third quarter of 2025. The increase in other expense was primarily due to the unfavorable impact of exchange rates on the remeasurement of assets and liabilities in non-functional currencies. For the first nine months of 2026, other expense was $27 million compared to other income of $33 million for the first nine months of 2025. The decrease was primarily due to the absence of deferred consideration recognized in the prior-year period related to the 2017 sale of our outsourcing business, partially offset by the favorable impact of foreign currency remeasurement of assets and liabilities in non-functional currencies and gain from the sale of the NFP Wealth business.

Income before Income Taxes

Income before income taxes for the third quarter of 2026 was $612 million, a 3% increase from $597 million compared to the prior-year period. For the first nine months of 2026, income before income taxes was $2.9 billion, a 13% increase from $2.6 billion for the first nine months of 2025.

Income Taxes

The effective tax rate on net income was 20.6% and 20.7% for the three and nine months ended September 30, 2026, respectively. The effective tax rate on net income was 21.3% and 19.8% for the three and nine months ended September 30, 2025, respectively.

Ireland, the U.K., Singapore, and many E.U. member states, among others, have enacted legislation to implement the global minimum tax that is generally consistent with the OECD’s proposed Pillar Two tax regime. There remains significant uncertainty, however, as to how Pillar Two applies to the Company in prior years and how its application may change in future years. The OECD has issued numerous guidance documents attempting to change how Pillar Two Tax operates, subject to enactment by each implementing country, and the OECD may issue additional guidance in the future. The Company is actively monitoring developments in this area and continues to evaluate the guidance and the potential impacts this may have on its global effective tax rate, results of operations, cash flows, and financial condition in 2026 and future periods.

Net Income Attributable to Aon Shareholders

Net income attributable to Aon shareholders for the third quarter of 2026 increased to $476 million, or $2.23 per diluted share, from $458 million, or $2.11 per diluted share, in the prior-year period. Net income attributable to Aon shareholders for the first nine months of 2026 increased to $2.2 billion, or $10.46 per diluted share, from $2.0 billion, or $9.21 per diluted share, in the prior-year period.

Non-GAAP Metrics

In our discussion of consolidated results, we sometimes refer to certain non-GAAP supplemental information derived from consolidated financial information specifically related to organic revenue growth, adjusted operating margin, adjusted operating income, adjusted diluted earnings per share, adjusted net income attributable to Aon shareholders, adjusted net income per share, adjusted other income (expense), adjusted effective tax rate, free cash flow, and the impact of foreign exchange rate fluctuations on operating results. Management believes that these measures are important to make meaningful period-to-period comparisons and that this supplemental information is helpful to investors. Management also uses these measures to assess operating performance and performance for compensation. This non-GAAP supplemental information should be viewed in

addition to, not instead of, the most directly comparable U.S. GAAP measures and our Condensed Consolidated Financial Statements.

Organic Revenue Growth

We use supplemental information related to organic revenue growth to help us and our investors evaluate business growth from ongoing operations. Organic revenue growth is a non-GAAP measure that includes the impact of certain intercompany activity and excludes the impact of changes in foreign exchange rates, fiduciary investment income, acquisitions (provided that organic revenue growth includes organic growth of an acquired business as calculated assuming that the acquired business was part of the combined company for the same proportion of the relevant prior-year period), divestitures (including held for sale disposal groups, which are adjusted from organic revenue growth upon classification as held for sale, if any), transfers between revenue lines, and gains or losses on derivatives accounted for as hedges. This supplemental information related to organic revenue growth represents a measure not in accordance with U.S. GAAP and should be viewed in addition to, not instead of, Total revenue in our Condensed Consolidated Financial Statements. Industry peers provide similar supplemental information about their revenue performance, although they may not make identical adjustments. A reconciliation of this non-GAAP measure to the reported Total revenue is as follows (in millions, except percentages):


	Three Months Ended September 30,
	2026		2025		% Change		Less: Currency Impact (1)		Less: Fiduciary Investment Income (2)		Less: Acquisitions, Divestitures & Other		Organic Revenue Growth (3)
Risk Capital Revenue:
Commercial Risk Solutions	$	2,110	$	1,988	6	%	—	%	—	%	(1)	%	7	%
Reinsurance Solutions (4)	572		537		7		—		(1)		1		7
Human Capital Revenue:
Health Solutions	992		935		6		—		—		—		6
Wealth Solutions	429		540		(21)		—		—		(25)		4
Eliminations	(2)		(3)		N/A		N/A		N/A		N/A		N/A
Total revenue	$	4,101	$	3,997	3	%	—	%	—	%	(3)	%	6	%


	Nine Months Ended September 30,
	2026		2025		% Change		Less: Currency Impact (1)		Less: Fiduciary Investment Income (2)		Less: Acquisitions, Divestitures & Other		Organic Revenue Growth (3)
Risk Capital Revenue:
Commercial Risk Solutions	$	6,628	$	6,168	7	%	2	%	—	%	(1)	%	6	%
Reinsurance Solutions (4)	2,562		2,414		6		2		—		(1)		5
Human Capital Revenue:
Health Solutions	2,929		2,733		7		2		—		—		5
Wealth Solutions	1,275		1,578		(19)		1		—		(23)		3
Eliminations	(13)		(12)		N/A		N/A		N/A		N/A		N/A
Total revenue	$	13,381	$	12,881	4	%	2	%	—	%	(3)	%	5	%

(1)Currency impact represents the effect on prior-year period results if they were translated at current period foreign exchange rates.

(2)Fiduciary investment income for the three months ended September 30, 2026 and 2025 was $69 million and $75 million, respectively. Fiduciary investment income for the nine months ended September 30, 2026 and 2025 was $182 million and $208 million, respectively.

(3)Organic revenue growth includes the impact of certain intercompany activity and excludes the impact of changes in foreign exchange rates, fiduciary investment income, acquisitions (provided that organic revenue growth includes organic growth of an acquired business as calculated assuming that the acquired business was part of the combined company for the same proportion of the relevant prior-year period), divestitures (including held for sale disposal groups, which are adjusted from organic revenue growth upon classification as held for sale, if any), transfers between revenue lines, and gains or losses on derivatives accounted for as hedges.

(4)Reinsurance Solutions revenue for the three and nine months ended September 30, 2026 includes $24 million of revenue resulting from the reversal of previously constrained revenue.

Adjusted Operating Margin

We use adjusted operating margin as a non-GAAP measure of our core operating performance of the Company. Adjusted operating margin excludes the impact of certain items, as listed below, because management does not believe these expenses are the best indicators of our core operating performance. This supplemental information related to adjusted operating margin represents a measure not in accordance with U.S. GAAP and should be viewed in addition to, not instead of, operating margin in our Condensed Consolidated Financial Statements.

A reconciliation of reported operating income and reported operating margin to adjusted operating income and adjusted operating margin is as follows (in millions, except percentages):


	Three Months Ended September 30,
	Risk Capital						Human Capital						Corporate/Eliminations (1)				Total Consolidated
(millions, except percentages)	2026			2025			2026			2025			2026		2025		2026			2025			% Change
Revenue	$	2,682		$	2,525		$	1,421		$	1,475		$	(2)	$	(3)	$	4,101		$	3,997		3	%

Operating income	$	608		$	585		$	346		$	332		$	(145)	$	(101)	$	809		$	816		(1)	%
Amortization and impairment of intangible assets	90			89			85			104			—		—		175			193
Change in the fair value of contingent consideration	(3)			10			7			13			—		—		4			23
Accelerating Aon United Program expenses (2)	18			(3)			2			(1)			73		36		93			32
Legal settlements (3)	—			(23)			—			—			—		—		—			(23)
Transaction and integration costs (4) (5)	—			3			—			2			25		5		25			10
Adjusted operating income	$	713		$	661		$	440		$	450		$	(47)	$	(60)	$	1,106		$	1,051		5	%
Operating margin	22.7		%	23.2		%	24.3		%	22.5		%					19.7		%	20.4		%	(70) bps
Adjusted operating margin	26.6		%	26.2		%	31.0		%	30.5		%					27.0		%	26.3		%	70 bps


	Nine Months Ended September 30,
	Risk Capital						Human Capital						Corporate/Eliminations (1)				Total Consolidated
(millions, except percentages)	2026			2025			2026			2025			2026		2025		2026			2025			% Change
Revenue	$	9,190		$	8,582		$	4,204		$	4,311		$	(13)	$	(12)	$	13,381		$	12,881		4	%

Operating income	$	2,906		$	2,646		$	956		$	852		$	(423)	$	(362)	$	3,439		$	3,136		10	%
Amortization and impairment of intangible assets	251			259			250			334			—		—		501			593
Change in the fair value of contingent consideration	(5)			7			13			23			—		—		8			30
Accelerating Aon United Program expenses (2)	51			48			6			9			224		179		281			236
Legal settlements (3)	—			(23)			—			—			—		—		—			(23)
Transaction and integration costs (4) (5)	8			17			12			23			50		26		70			66
Adjusted operating income	$	3,211		$	2,954		$	1,237		$	1,241		$	(149)	$	(157)	$	4,299		$	4,038		6	%
Operating margin	31.6		%	30.8		%	22.7		%	19.8		%					25.7		%	24.3		%	140 bps
Adjusted operating margin	34.9		%	34.4		%	29.4		%	28.8		%					32.1		%	31.3		%	80 bps

(1)Corporate expenses/eliminations include governance costs, post-retirement benefits, and other costs that are not directly attributable to a specific segment.

(2)Total Accelerating Aon United Program expenses include technology-related costs to facilitate streamlining and simplifying operations, headcount reduction costs, and costs associated with asset impairments, including real estate consolidation.

(3)In the fourth quarter of 2023, Aon recognized a $197 million charge in connection with transactions for which capital was arranged by a third party, Vesttoo Ltd., and in the third quarter of 2025, certain legal settlement expenses and recoveries were recognized resulting in a $23 million reduction of expense within the Risk Capital segment.

(4)The NFP transaction resulted in certain integration costs associated with colleague severance, retention bonus awards, termination of redundant third-party agreements, costs associated with legal entity rationalization, and professional or consulting fees related to alignment of management processes and controls, as well as costs associated with the assessment of NFP information technology environment and security protocols. Integration costs related to the NFP acquisition were substantially completed at June 30, 2026.

(5)In the third quarter of 2026, the Company entered into a definitive agreement to acquire USI. As part of the acquisition, Aon incurred $25 million of transaction costs in the three months ended September 30, 2026. Transaction costs include advisory, legal, tax, and other professional or consulting fees required to complete the acquisition. The USI Acquisition also will result in certain integration costs associated with colleague severance, termination of redundant third-party agreements, cash retention awards, and professional or consulting fees related to alignment of management processes and controls, as well as costs associated with the assessment of USI information technology environment and security protocols.

Risk Capital adjusted operating income increased $52 million, or 8%, in the third quarter of 2026. The increase was primarily due to organic revenue growth of 7% in both Commercial Risk Solutions and Reinsurance Solutions, partially offset

by increased expenses and investments in long-term growth. Human Capital adjusted operating income decreased $10 million, or 2%, in the third quarter of 2026. The decrease was primarily due to an increase in expenses associated with organic revenue growth and the sale of the NFP Wealth business, partially offset by organic revenue growth of 6% and 4% in Health Solutions and Wealth Solutions, respectively. For the first nine months of 2026, Risk Capital adjusted operating income increased $257 million, or 9%. The increase was primarily due to organic revenue growth of 6% in Commercial Risk Solutions and 5% in Reinsurance Solutions and a favorable impact from foreign currency translation, partially offset by increased expenses and investments in long-term growth. Human Capital adjusted operating income decreased $4 million, or less than 1%, for the first nine months of 2026. The decrease was primarily due to the sale of the NFP Wealth business and increased expenses and investments in long-term growth, partially offset by organic revenue growth of 5% in Health Solutions and 3% in Wealth Solutions and a favorable impact from foreign currency translation.

Adjusted Diluted Earnings per Share

We use adjusted diluted earnings per share as a non-GAAP measure of our core operating performance. Adjusted diluted earnings per share excludes the impact of certain items, as listed below, because management does not believe these expenses are the best indicators of our core operating performance. This supplemental information related to adjusted diluted earnings per share represents a measure not in accordance with U.S. GAAP and should be viewed in addition to, not instead of, diluted earnings per share in our Condensed Consolidated Financial Statements.

A reconciliation of this non-GAAP measure to reported diluted earnings per share is as follows (in millions, except per share data and percentages):


	Three Months Ended September 30, 2026
	U.S. GAAP			Adjustments		Non-GAAP Adjusted
Operating income	$	809		$	297	$	1,106
Interest income	24			—		24
Interest expense	(206)			—		(206)
Other income (expense)	(15)			—		(15)
Income before income taxes	612			297		909
Income tax expense (1)	126			58		184


Net income	486			239		725
Less: Net income attributable to noncontrolling interests	10			—		10
Net income attributable to Aon shareholders	$	476		$	239	$	715

Diluted net income per share attributable to Aon shareholders	$	2.23		$	1.13	$	3.36




Weighted average ordinary shares outstanding - diluted	213.0			—		213.0
Effective tax rates (1)	20.6		%			20.2		%


	Three Months Ended September 30, 2025
	U.S. GAAP			Adjustments		Non-GAAP Adjusted
Operating income	$	816		$	235	$	1,051
Interest income	—			—		—
Interest expense	(206)			—		(206)
Other income (expense)	(13)			—		(13)
Income before income taxes	597			235		832
Income tax expense (1)	127			33		160


Net income	470			202		672
Less: Net income attributable to noncontrolling interests	12			—		12
Net income attributable to Aon shareholders	$	458		$	202	$	660

Diluted net income per share attributable to Aon shareholders	$	2.11		$	0.94	$	3.05




Weighted average ordinary shares outstanding - diluted	216.7			—		216.7
Effective tax rates (1)	21.3		%			19.2		%


	Nine Months Ended September 30, 2026
	U.S. GAAP			Adjustments		Non-GAAP Adjusted
Operating income	$	3,439		$	860	$	4,299
Interest income	41			—		41
Interest expense	(564)			—		(564)
Other income (expense) (2)	(27)			(20)		(47)
Income before income taxes	2,889			840		3,729
Income tax expense (1)	599			155		754


Net income	2,290			685		2,975
Less: Net income attributable to noncontrolling interests	51			—		51
Net income attributable to Aon shareholders	$	2,239		$	685	$	2,924

Diluted net income per share attributable to Aon shareholders	$	10.46		$	3.20	$	13.66




Weighted average ordinary shares outstanding - diluted	214.1			—		214.1
Effective tax rates (1)	20.7		%			20.2		%


	Nine Months Ended September 30, 2025
	U.S. GAAP			Adjustments		Non-GAAP Adjusted
Operating income	$	3,136		$	902	$	4,038
Interest income	5			—		5
Interest expense	(624)			—		(624)
Other income (expense) (2)	33			(108)		(75)
Income before income taxes	2,550			794		3,344
Income tax expense (1)	504			141		645


Net income	2,046			653		2,699
Less: Net income attributable to noncontrolling interests	44			—		44
Net income attributable to Aon shareholders	$	2,002		$	653	$	2,655

Diluted net income per share attributable to Aon shareholders	$	9.21		$	3.01	$	12.22




Weighted average ordinary shares outstanding - diluted	217.3			—		217.3
Effective tax rates (1)	19.8		%			19.3		%

(1)Adjusted items are generally taxed at the estimated annual effective tax rate, except for the applicable tax impact associated with Accelerating Aon United Program expenses, deferred consideration from a prior year sale of business, certain integration costs related to the acquisition of NFP, additional gain from the disposal of the NFP Wealth business, changes in the fair value of contingent consideration, certain legal settlements, and certain transaction costs related to the definitive agreement to acquire USI, which are adjusted at the related jurisdictional rate. The tax adjustment also excludes interest accruals for income tax reserves related to the termination fee payment made in connection with the Company’s terminated proposed combination with Willis Towers Watson

(2)During the nine months ended September 30, 2026, Aon recognized a $20 million gain related to the prior-year sale of a significant majority of NFP's Wealth business, all of which was recognized in the first quarter of 2026. During the nine months ended September 30, 2025, a gain of $108 million was recognized, which was all recognized in the first six months of 2025. These gains related to deferred consideration from the affiliates of The Blackstone Group L.P. and the other designated purchasers related to a divestiture completed in a prior-year period and were excluded from Adjusted other income (expense).

Free Cash Flow

We use free cash flow, defined as cash flows provided by operations less capital expenditures, as a non-GAAP measure of our core operating performance and cash-generating capabilities of our business operations. This supplemental information related to free cash flow represents a measure not in accordance with U.S. GAAP and should be viewed in addition to, not instead of, Cash provided by operating activities in our Condensed Consolidated Financial Statements. Management believes the supplemental information related to free cash flow is helpful to investors when evaluating our operating performance and liquidity results. The use of this non-GAAP measure does not imply or represent the residual cash flow for discretionary expenditures. A reconciliation of this non-GAAP measure to the reported Cash provided by operating activities is as follows (in millions):


	Nine Months Ended September 30,
	2026		2025
Cash provided by operating activities	$	2,177	$	2,084
Capital expenditures	(234)		(189)
Free cash flow	$	1,943	$	1,895

The increase in free cash flow was driven by a $93 million increase in cash flows from operations, primarily driven by strong adjusted operating income growth which offset the impact of working capital and USI transaction costs. The increase in cash flows from operations was partially offset by a $45 million increase in capital expenditures.

Impact of Foreign Currency Exchange Rate Fluctuations

Because we conduct business in over 120 countries, foreign exchange rate fluctuations may have a significant impact on our business. Foreign exchange rate movements may be significant and may distort true period-to-period comparisons of changes in revenue or pretax income. Therefore, to give financial statement users meaningful information about our operations, we have provided an illustration of the comparable impact of foreign currency exchange rates on our financial results. The methodology used to calculate this comparable impact isolates the impact of the change in currencies between periods by hypothetically translating the prior year quarter’s revenue, expenses, and net income using the current quarter’s foreign currency exchange rates.

Currency fluctuations had a favorable impact of $0.02 and a favorable impact of $0.38 on net income per diluted share during the three and nine months ended September 30, 2026, respectively, if prior-year period results were translated at current period foreign exchange rates. Currency fluctuations had a favorable impact of $0.01 and an unfavorable impact of $0.12 on net income per diluted share during the three and nine months ended September 30, 2025, respectively, if 2025 results were translated at 2026 rates.

Currency fluctuations had a favorable impact of $0.02 and a favorable impact of $0.40 on adjusted diluted earnings per share during the three and nine months ended September 30, 2026, respectively, if prior-year period results were translated at current period foreign exchange rates. Currency fluctuations had a favorable impact of $0.02 and an unfavorable impact of $0.11 on adjusted diluted earnings per share during the three and nine months ended September 30, 2025, respectively, if 2025 results were translated at 2026 rates. These translations are performed for comparative and illustrative purposes only and do not impact the accounting policies or practices for amounts included in our Condensed Consolidated Financial Statements.

LIQUIDITY AND FINANCIAL CONDITION

Liquidity

Executive Summary

We believe that our balance sheet and strong cash flow provide us with adequate liquidity. Our primary sources of liquidity in the near-term include cash flows provided by operations, available cash reserves, and divestiture proceeds; primary sources of liquidity in the long-term include cash flows provided by operations, debt capacity available under our revolving credit facility, and capital markets. Our primary uses of liquidity are operating expenses and investments, capital expenditures, acquisitions, share repurchases, pension obligations, shareholder dividends, Accelerating Aon United Program cash charges and certain transaction costs, integration costs, and other charges related to the definitive agreement to acquire USI. We believe that cash flows from operations, available credit facility, available cash reserves, and the capital markets will be sufficient to meet our liquidity needs, including cash requirements to close the USI Acquisition, principal and interest payments on debt obligations, capital expenditures, pension contributions, and anticipated working capital requirements in the next twelve months and over the long-term.

Cash and cash equivalents on our balance sheet includes funds available for general corporate purposes, as well as amounts restricted as to their use. Funds held on behalf of clients in a fiduciary capacity are segregated and shown together with uncollected insurance premiums in Fiduciary assets in our Condensed Consolidated Statements of Financial Position, with a corresponding amount in Fiduciary liabilities.

In our capacity as an insurance broker or agent, we collect premiums from insureds and, after deducting our commission, remit the premiums to the respective insurance underwriters. We also collect claims or refunds from underwriters on behalf of insureds, which are then returned to the insureds. Unremitted insurance premiums and claims are held by us in a fiduciary capacity. The levels of funds held on behalf of clients and liabilities can fluctuate significantly depending on when we collect the premiums, claims, and refunds, make payments to underwriters and insureds, and collect funds from clients and make payments on their behalf, and upon the impact of foreign currency movements. Funds held on behalf of clients, because of their nature, are generally invested in highly liquid securities with highly rated, credit-worthy financial institutions. Fiduciary assets include funds held on behalf of clients of $8.5 billion and $7.4 billion at September 30, 2026 and December 31, 2025, respectively, and fiduciary receivables of $10.4 billion and $10.5 billion at September 30, 2026 and December 31, 2025, respectively. While we earn investment income on the funds held in cash and money market funds, the funds cannot be used for general corporate purposes.

We maintain a multi-currency cash pool with a third-party bank in which various Aon entities participate. Individual Aon entities are permitted to overdraw on their individual accounts provided the overall global balance does not fall below zero. At September 30, 2026, cash balances of one or more non-U.S. entities may have been negative; however, the overall balance was positive. Entities with a negative cash pool position incur interest expense, while those with a positive position earn interest income. Interest rates are determined by local market conditions and vary by currency. For the period, if interest expense on

negative cash pool balances exceeds interest income associated with positive cash pool balances, as well as other income producing assets, the net amount is reported as interest expense for both the quarterly and year-to-date periods.

The following table summarizes our Cash and cash equivalents, Short-term investments, and Fiduciary assets as of September 30, 2026 (in millions):


	Statement of Financial Position Classification
Asset Type	Cash and Cash Equivalents		Short-term Investments		Fiduciary Assets		Total
Certificates of deposit, bank deposits, or time deposits	$	2,017	$	—	$	4,435	$	6,452
Money market funds	—		13,299		4,019		17,318
Cash, Short-term investments, and funds held on behalf of clients	2,017		13,299		8,454		23,770
Fiduciary receivables	—		—		10,436		10,436
Total	$	2,017	$	13,299	$	18,890	$	34,206

Cash and cash equivalents and funds held on behalf of clients, including cash and cash equivalents and funds held on behalf of clients classified as held for sale, had a net increase of $1.9 billion for the nine months ended September 30, 2026 compared to a net increase of $1.2 billion for the nine months ended September 30, 2025. A summary of our cash flows provided by and used for operating, investing, and financing activities is as follows (in millions):


	Nine Months Ended September 30,
	2026		2025
Cash provided by operating activities	$	2,177	$	2,084
Cash used for investing activities	(12,218)		(362)
Cash provided by (used for) financing activities	12,046		(1,141)

Effect of exchange rates on cash and cash equivalents and funds held on behalf of clients	(107)		606
Net increase in cash and cash equivalents and funds held on behalf of clients	$	1,898	$	1,187

Operating Activities

Net cash provided by operating activities during the nine months ended September 30, 2026 was $2.2 billion, an increase of $93 million compared to $2.1 billion of Cash flows provided by operating activities in the prior-year period. This amount represents Net income reported, generally adjusted for gains from sales of businesses, losses from sales of businesses, share-based compensation expense, depreciation expense, amortization and impairments, and other non-cash income and expenses, including pension settlement charges. Adjustments also include changes in working capital that relate primarily to the timing of payments of accounts payable and accrued liabilities, collection of receivables, payments for Accelerating Aon United Program expenses and USI-related transaction costs.

Pension Contributions

Pension contributions were $80 million for the nine months ended September 30, 2026 and 2025. For the remainder of 2026, we expect to contribute approximately $13 million in cash to our pension plans, including contributions to non-U.S. pension plans, which are subject to changes in foreign exchange rates.

Accelerating Aon United Program Expenses

In the third quarter of 2023, we initiated a three-year restructuring program called the Accelerating Aon United Program with the purpose of streamlining our technology infrastructure, optimizing our leadership structure and resource alignment, and reducing the real estate footprint to align to our hybrid working strategy. The Program includes technology-related costs to facilitate streamlining and simplifying operations, headcount reduction costs, and costs associated with asset impairments, including real estate consolidation and technology costs.

Program charges are recognized within the Program’s expenses on the accompanying Condensed Consolidated Statements of Income and consists of the following cost activities:

•Technology and other – includes costs associated with actions taken to rationalize certain applications and to optimize technology across the Company. These costs may include contract termination fees and other non-capitalizable costs associated with Program initiatives, which include professional service fees.

•Workforce optimization – includes costs associated with headcount reduction and other separation-related costs.

The changes in the Company’s liabilities for the Program as of September 30, 2026 are as follows (in millions):


	Technology and other		Workforce optimization		Asset impairments		Total
Liability Balance as of December 31, 2025	$	39	$	108	$	—	$	147
Charges	181		96		4		281
Cash payments	(150)		(85)		—		(235)
Foreign currency translation and other	—		(2)		—		(2)
Non-cash charges (1)	(5)		5		(4)		(4)
Liability balance as of September 30, 2026	$	65	$	122	$	—	$	187
Total costs incurred from inception to date	$	516	$	551	$	103	$	1,170

(1) Charges reflect changes in accruals made in the current period.

The Program is currently expected to result in cumulative costs of $1.3 billion, consisting of approximately $1.2 billion of cash charges and approximately $0.1 billion of non-cash charges. Over the life of the program, our Risk Capital segment is expected to incur approximately $325 million of charges, while our Human Capital segment is expected to incur approximately $80 million of charges, with the remaining charges relating to corporate expenses. The Program is estimated to generate annualized expense savings of approximately $450 million by the end of 2027, largely benefiting Compensation and benefits, Information technology, and Premises on the Condensed Consolidated Statements of Income. For the three and nine months ended September 30, 2026, total Program costs incurred were $93 million and $281 million, respectively. In the final months of the Program there may be changes to expected timing, estimates of expected costs and related savings. The Company realized an additional $20 million and $70 million of expense savings in the first three and nine months of 2026, respectively, from Program actions, resulting in $340 million of cumulative, annualized expense savings since the beginning of the Program, the majority of which were recognized within Compensation and benefits on the Condensed Consolidated Statements of Income.

Investing Activities

Cash flows used for investing activities were $12.2 billion during the nine months ended September 30, 2026, an increase of $11.9 billion compared to $362 million of Cash flows used for investing activities in the prior-year period, due primarily to net purchases of short-term investments of $11.7 billion made with the net proceeds from the senior notes issued in September 2026. Generally, the primary drivers of cash flows used for investing activities are acquisition of businesses, purchases of short-term investments, capital expenditures, and payments for investments, including derivatives. Generally, the primary drivers of cash flows provided by investing activities are sales of businesses, including collection of deferred consideration in connection with prior year business divestitures, sales of short-term investments, and proceeds from investments, including the settlement of derivatives. The gains and losses corresponding to cash flows provided by proceeds from investments and used for payments for investments are primarily recognized in Other income (expense) in our Condensed Consolidated Statements of Income.

Short-term Investments

Short-term investments increased $11.7 billion to $13.3 billion at September 30, 2026 compared to December 31, 2025, reflecting net proceeds from the senior notes issued in September 2026. The majority of our investments carried at fair value are money market funds. These money market funds are held throughout the world with various financial institutions. We are not aware of any market liquidity issues that would materially impact the fair value of these investments.

Acquisitions and Dispositions of Businesses


	Three Months Ended September 30,		Nine Months Ended September 30,
	2026	2025	2026	2025
Risk Capital	1	1	7	8
Human Capital	—	4	2	6
Total	1	5	9	14

During the first nine months of 2026, cash consideration, net of cash and funds held on behalf of clients acquired, was $327 million, primarily related to current year acquisitions. During the first nine months of 2025, cash consideration, net of cash and funds held on behalf of clients acquired, was $276 million, which relates to acquisitions completed in 2025.


	Three Months Ended September 30, 2025	Nine Months Ended September 30, 2025

Risk Capital	1	1
Human Capital	1	2
Total	2	3

There was $22 million of cash received during the first nine months of 2026 related to dispositions completed in prior periods, which primarily relates to the disposition of the NFP Wealth business and revisions to the final closing statement.

There was $112 million of cash received during the first nine months of 2025, primarily related to deferred consideration from the affiliates of The Blackstone Group L.P. and the other designated purchasers related to a divestiture completed in a prior year period.

Capital Expenditures

Our additions to fixed assets including capitalized software, amounted to $234 million and $189 million for the nine months ended September 30, 2026 and 2025, respectively, which primarily relate to new build out and the refurbishing of office facilities, software development costs, and computer equipment purchases. In the current period, we continue to support certain technology projects to drive long-term growth and real estate projects, including projects related to our AAU restructuring program.

Financing Activities

Cash flows provided by financing activities were $12.0 billion during the nine months ended September 30, 2026 compared to $1.1 billion of Cash flows used for financing activities in the prior-year period. Generally, the primary drivers of cash flow provided by financing activities are issuances of debt, changes in net fiduciary liabilities, and proceeds from issuance of shares. Generally, the primary drivers of cash flows used for financing activities are repayments of debt, share repurchases, cash paid for employee taxes on withholding shares, dividends paid to shareholders, transactions with noncontrolling interests, and other financing activities, such as payments for deferred consideration in connection with prior year business acquisitions and payments of debt issuance costs.

Share Repurchase Program

We have a share repurchase program authorized by our Board of Directors. The Repurchase Program was established in April 2012 with $5.0 billion in authorized repurchases, and was increased by $5.0 billion in authorized repurchases in each of November 2014, June 2017, and November 2020. In each of February 2022 and June 2026, authorized repurchases were increased by an additional $7.5 billion, for a total of $35.0 billion in repurchase authorizations.

The following table summarizes our share repurchase activity (in millions, except per share data):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Shares repurchased	—		0.7		3.4		2.0
Average price per share	$	—	$	362.00	$	321.61	$	371.71

Repurchase costs recorded to Retained Earnings	$	—	$	250	$	1,100	$	750

At September 30, 2026, the remaining authorized amount for share repurchase under the Repurchase Program was approximately $7.7 billion. Under the Repurchase Program, the Company has repurchased a total of approximately 178 million shares for an aggregate cost of approximately $27.3 billion. For further information regarding the Repurchase Program, see Part II, Item 2 of this report.

Borrowings

Total debt at September 30, 2026 was $28.0 billion, an increase of $12.8 billion compared to December 31, 2025. Further, commercial paper activity during the three and nine months ended September 30, 2026 and 2025 is as follows (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Total issuances (1)	$	225	$	1,079	$	3,432	$	4,523
Total repayments	(525)		(1,183)		(3,435)		(4,147)
Net issuances (repayments)	$	(300)	$	(104)	$	(3)	$	376

(1)The proceeds of the commercial paper issuances are generally used for short-term working capital needs.

On September 17, 2026, Aon North America, Inc. and Aon Global Holdings plc co-issued $13.5 billion in aggregate principal of Senior Notes which included $2.0 billion 5.350% Senior Notes due 2029, $3.0 billion 5.625% Senior Notes due 2031, $2.0 billion 5.800% Senior Notes due 2033, $2.75 billion 5.950% Senior Notes due 2036, $1.0 billion 6.100% Senior Notes due 2038, $750 million 6.450% Senior Notes due 2046, and $2.0 billion 6.450% Senior Notes due 2056. The Company intends to use the net proceeds from the offering, together with the proceeds of the delayed draw term loans described above, to pay the cash consideration with respect to the USI Acquisition, settle certain acquired USI debt, and to pay related fees and expenses. With the exception of the $2.0 billion 6.450% Senior Notes due 2056, the notes are subject to special mandatory redemption at 101% of their aggregate principal amount, plus accrued and unpaid interest, if any, if the USI Acquisition is not consummated by a specified date, subject to certain extensions, or upon the occurrence of certain other specified events indicating that the acquisition will not be consummated. Refer to Note 7 “Acquisitions and Dispositions of Businesses” for additional information.

In December 2025, Aon Global Limited’s $750 million 3.875% Senior Notes matured and were repaid in full.

On April 25, 2024, Aon North America, Inc. drew its $2 billion delayed draw term loan. As of December 31, 2025, the term loan was paid in full.

Other Liquidity Matters

Distributable Profits

We are required under Irish law to have available “distributable profits” to make share repurchases or pay dividends to shareholders. Distributable profits are created through the earnings of the Irish parent company and, among other methods, through intercompany dividends or a reduction in share capital approved by the High Court of Ireland. Distributable profits are not linked to a U.S. GAAP reported amount (e.g., Retained earnings (Accumulated deficit)). As of September 30, 2026 and December 31, 2025, we had distributable profits in excess of $29.1 billion and $30.1 billion, respectively. We believe that we will have sufficient distributable profits for the foreseeable future.

Revolving Credit Facility

We expect cash generated by operations for 2026 to be sufficient to service our debt and contractual obligations, finance capital expenditures, and continue to pay dividends to our shareholders. Although cash from operations is expected to be sufficient to service these activities, we have the ability to access the commercial paper markets or borrow under our credit facility to accommodate any timing differences in cash flows. Additionally, under current market conditions, we believe that we could access capital markets to obtain debt financing for longer-term funding, if needed.

As of September 30, 2026, Aon plc had one revolving credit facility outstanding: its $3.0 billion multi-currency U.S. credit facility expiring in September 2031. The Revolving Credit Facility, effective September 18, 2026, replaced Aon plc’s prior $1.0 billion multi-currency U.S. credit facility expiring in September 2027 and $1.0 billion multi-currency U.S. credit facility expiring in October 2028.

The Revolving Credit Facility and the delayed draw term loans include customary representations, warranties, and covenants, including financial covenants that require us to maintain specified ratios of adjusted consolidated EBITDA to consolidated interest expense and consolidated debt to adjusted consolidated EBITDA, in each case, tested quarterly. We did not have borrowings under the revolving credit facility or the delayed draw term loans as of September 30, 2026 and December 31, 2025, respectively. Additionally, we are in compliance with the financial covenants and all other covenants contained therein during the rolling 12 months ended September 30, 2026 and December 31, 2025, respectively.

Shelf Registration Statement

On July 2, 2026, we filed a shelf registration statement with the SEC, registering the offer and sale from time to time of an indeterminate amount of, among other securities, debt securities, preference shares, class A ordinary shares and convertible securities. Our ability to access the market as a source of liquidity is dependent on investor demand, market conditions, and other factors.

Rating Agency Ratings

The major rating agencies’ ratings of our debt at October 28, 2026 appear in the table below.

Ratings

Senior Long-term Debt

Commercial Paper

Outlook

Standard & Poor’s

A-

A-2

Negative

Moody’s Investor Services

Baa2

P-2

Stable

Fitch, Inc.

BBB+

F-2

Watch Negative

In the third quarter of 2026, S&P’s Global Ratings changed our ‘A-’ outlook to Negative, as compared to a Stable outlook, Moody’s Investor Services changed our ‘Baa2’ outlook to Stable, as compared to a Positive outlook, and Fitch, Inc. placed our ‘BBB+’ rating on Watch Negative, as compared to a Stable outlook, in each case at February 13, 2026 as reported in our Annual Report on Form 10-K for the year ended December 31, 2025.

Letters of Credit and Other Guarantees

We have entered into a number of arrangements whereby our performance on certain obligations is guaranteed by a third party through the issuance of a letter of credit. We had total LOCs outstanding of approximately $127 million at September 30, 2026, compared to $124 million at December 31, 2025. These LOCs cover the beneficiaries related to certain of our U.S. and Canadian secure non-qualified pension plan schemes, reinsurance obligations related to our own E&O liability insurance program, and secure deductible retentions for our own workers’ compensation program. We also have obtained LOCs to cover

contingent payments for taxes and other business obligations to third parties, and other guarantees for miscellaneous purposes at our international subsidiaries.

We have certain contractual contingent guarantees for premium payments owed by clients to certain insurance companies. The maximum exposure with respect to such contractual contingent guarantees was approximately $118 million at September 30, 2026, compared to $196 million at December 31, 2025.

Guarantee of Registered Securities

All issued and outstanding debt securities by Aon Corporation are guaranteed by Aon Global Limited, Aon plc, Aon North America, Inc., and Aon Global Holdings plc, and include the following (collectively, the “Aon Corporation Notes”):


Aon Corporation Notes

8.205% Junior Subordinated Notes due January 2027
4.500% Senior Notes due December 2028
3.750% Senior Notes due May 2029
2.800% Senior Notes due May 2030
6.250% Senior Notes due September 2040

All guarantees of Aon plc, Aon Global Limited, Aon North America, Inc., and Aon Global Holdings plc of the Aon Corporation Notes are joint and several as well as full and unconditional. Senior Notes rank pari passu in right of payment with all other present and future unsecured debt which is not expressed to be subordinate or junior in rank to any other unsecured debt of Aon Corporation. There are no subsidiaries other than those listed above that guarantee the Aon Corporation Notes.

All issued and outstanding debt securities by Aon Global Limited are guaranteed by Aon plc, Aon Global Holdings plc, Aon North America, Inc., and Aon Corporation, and include the following (collectively, the “Aon Global Limited Notes”):


Aon Global Limited Notes
4.250% Senior Notes due December 2042
4.450% Senior Notes due May 2043
4.600% Senior Notes due June 2044
4.750% Senior Notes due May 2045

All guarantees of Aon plc, Aon Global Holdings plc, Aon North America, Inc., and Aon Corporation of the Aon Global Limited Notes are joint and several as well as full and unconditional. Senior Notes rank pari passu in right of payment with all other present and future unsecured debt which is not expressed to be subordinate or junior in rank to any other unsecured debt of Aon Global Limited. There are no subsidiaries other than those listed above that guarantee the Aon Global Limited Notes.

All issued and outstanding debt securities by Aon North America, Inc. are guaranteed by Aon Global Limited, Aon plc, Aon Global Holdings plc, and Aon Corporation, and include the following (collectively, the “Aon North America, Inc. Notes”):


Aon North America, Inc. Notes
5.125% Senior Notes due March 2027
5.150% Senior Notes due March 2029
5.300% Senior Notes due March 2031
5.450% Senior Notes due March 2034
5.750% Senior Notes due March 2054

All guarantees of Aon Global Limited, Aon plc, Aon Global Holdings plc, and Aon Corporation of the Aon North America, Inc. Notes are joint and several as well as full and unconditional. Senior Notes rank pari passu in right of payment with all other present and future unsecured debt which is not expressed to be subordinate or junior in rank to any other unsecured debt of Aon North America, Inc. There are no subsidiaries other than those listed above that guarantee the Aon North America, Inc. Notes.

All co-issued and outstanding debt securities by Aon Corporation and Aon Global Holdings plc are guaranteed by Aon plc, Aon North America, Inc., and Aon Global Limited and include the following (collectively, the “Aon Corporation and Aon Global Holdings plc Co-Issued Notes”):


Co-Issued Notes - Aon Corporation and Aon Global Holdings plc
2.850% Senior Notes due May 2027
2.050% Senior Notes due August 2031
2.600% Senior Notes due December 2031
5.000% Senior Notes due September 2032
5.350% Senior Notes due February 2033
2.900% Senior Notes due August 2051
3.900% Senior Notes due February 2052

All guarantees of Aon plc, Aon Global Limited, and Aon North America, Inc. of the Aon Corporation and Aon Global Holdings plc Co-Issued Notes are joint and several as well as full and unconditional. Senior Notes rank pari passu in right of payment with all other present and future unsecured debt which is not expressed to be subordinate or junior in rank to any other unsecured debt of Aon Corporation and Aon Global Holdings plc. There are no subsidiaries other than those listed above that guarantee the Aon Corporation and Aon Global Holdings plc Co-Issued Notes.

All co-issued and outstanding debt securities by Aon North America, Inc. and Aon Global Holdings plc are guaranteed by Aon plc, Aon Corporation, and Aon Global Limited and including the following (collectively, the “Aon North America, Inc. and Aon Global Holdings plc Co-Issued Notes”):


Co-Issued Notes - Aon North America, Inc. and Aon Global Holdings plc
5.350% Senior Notes due September 2029
5.625% Senior Notes due September 2031
5.800% Senior Notes due September 2033
5.950% Senior Notes due September 2036
6.100% Senior Notes due September 2038
6.450% Senior Notes due September 2046
6.450% Senior Notes due September 2056

All guarantees of Aon plc, Aon Corporation, and Aon Global Limited of the Aon North America, Inc. and Aon Global Holdings plc Co-Issued Notes are joint and several as well as full and unconditional. Senior Notes rank pari passu in right of payment with all other present and future unsecured debt which is not expressed to be subordinate or junior in rank to any other unsecured debt of Aon North America, Inc. and Aon Global Holdings plc. There are no subsidiaries other than those listed above that guarantee the Aon North America, Inc. and Aon Global Holdings plc Co-Issued Notes.

Aon Corporation, Aon North America, Inc., Aon Global Limited, and Aon Global Holdings plc are indirect wholly owned subsidiaries of Aon plc. Aon plc, Aon Global Limited, Aon Global Holdings plc, Aon North America, Inc., and Aon Corporation together comprise the “Obligor group”. The following tables set forth summarized financial information for the Obligor group for the year ended December 31, 2025 and for the period ended September 30, 2026.

Adjustments are made to the tables to eliminate intercompany balances and transactions between the Obligor group. Intercompany balances and transactions between the Obligor group and non-guarantor subsidiaries are presented as separate line items within the summarized financial information. These balances are presented on a net presentation basis, rather than a gross basis, as this better reflects the nature of the intercompany positions and presents the funding or funded position that is to be received or owed. No balances or transactions of non-guarantor subsidiaries are presented in the summarized financial information, including investments of the Obligor group in non-guarantor subsidiaries.


	Obligor Group
	Summarized Statement of Income Information
		Nine Months Ended
(millions)		September 30, 2026
Revenue		$	—
Operating loss		$	(75)
Loss from non-guarantor subsidiaries before income taxes		$	(617)
Net loss		$	(1,194)
Net loss attributable to Aon shareholders		$	(1,194)


	Obligor Group
	Summarized Statement of Financial Position Information
		As of		As of
(millions)		September 30, 2026		December 31, 2025
Receivables due from non-guarantor subsidiaries		$	6,542	$	1,617
Other current assets		13,803		1,453
Total current assets		$	20,345	$	3,070

Non-current receivables due from non-guarantor subsidiaries		$	1,062	$	261
Other non-current assets		1,672		1,417
Total non-current assets		$	2,734	$	1,678

Payables to non-guarantor subsidiaries		$	15,067	$	8,771
Other current liabilities		4,440		5,939
Total current liabilities		$	19,507	$	14,710

Non-current payables to non-guarantor subsidiaries		$	4,616	$	5,230
Other non-current liabilities		27,789		16,081
Total non-current liabilities		$	32,405	$	21,311

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

There have been no material changes to our critical accounting policies and estimates, which include revenue recognition, pensions, goodwill and other intangible assets, contingencies, share-based payments, income taxes, and Accelerating Aon United restructuring charges, as compared to those discussed in our Annual Report on Form 10-K for the year ended December 31, 2025.

NEW ACCOUNTING PRONOUNCEMENTS

Note 2 “Accounting Principles and Practices” to our Financial Statements contained in Part I, Item 1 of this report contains a discussion of recently issued accounting pronouncements and Securities and Exchange Commission final rules and their future potential impact on our financial results or disclosures, if determinable.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

We are exposed to potential fluctuations in earnings, cash flows, and the fair values of certain of our assets and liabilities due to changes in interest rates and foreign exchange rates. To manage the risk from these exposures, we enter into a variety of derivative instruments. We do not enter into derivatives or financial instruments for trading or speculative purposes.

The following discussion describes our specific exposures and the strategies we use to manage these risks. Refer to Note 2 “Accounting Principles and Practices” in the Notes to Consolidated Financial Statements in Part II, Item 8 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 and Note 13 “Derivatives and Hedging” to our Financial Statements contained in Part I, Item 1 of this report, for discussion of our accounting policies for financial instruments and derivatives.

Foreign Exchange Risk

We are subject to foreign exchange rate risk. Our primary exposures include exchange rates between the U.S. dollar and the euro, the British pound, the Canadian dollar, the Australian dollar, the Indian rupee, and the Japanese yen. We use over-the-counter options, forwards, and cross currency interest rate swap contracts to reduce the impact of foreign currency risk to our financial statements.

Additionally, some of our non-U.S. subsidiaries receive revenue in currencies that differ from their functional currencies. Most significantly, our U.K. subsidiaries earn a portion of their revenue in U.S. dollars, euro, and Japanese yen, but most of their expenses are incurred in British pounds. We generally hedge up to 45% of our U.K. subsidiaries’ expected exposures to transactions denominated in U.S. dollar, euro, and Japanese yen. We generally do not hedge exposures beyond two years.

We also use forward and option contracts to economically hedge foreign exchange risk associated with monetary balance sheet exposures, such as intercompany notes and current assets and liabilities that are denominated in a non-functional currency and are subject to remeasurement. In addition, we use cross currency interest rate swaps to hedge cumulative translation exposure associated with our net investments in certain non-USD functional subsidiaries. These cross currency interest rate swaps have maturities ranging from 5 to 10 years.

The translated value of revenues and expenses from our international brokerage operations are subject to fluctuations in foreign exchange rates. A strengthening U.S. dollar has an adverse impact on our Net income attributable to shareholders, which are reported in U.S. dollars in our Condensed Consolidated Financial Statements. If we were to hypothetically translate prior year results at current quarter exchange rates, diluted earnings per share would have a favorable $0.02 comparable impact and a favorable $0.38 comparable impact during the three and nine months ended September 30, 2026, respectively. Further, adjusted diluted earnings per share, a non-GAAP measure as defined and reconciled under the caption “Review of Consolidated Results — Adjusted Diluted Earnings Per Share,” would have a favorable $0.02 comparable impact and a favorable $0.40 comparable impact during the three and nine months ended September 30, 2026, respectively, if we were to hypothetically translate prior year results at current quarter exchange rates.

Interest Rate Risk

Our fiduciary investment income is affected by changes in international and domestic short-term interest rates. We monitor our net exposure to short-term interest rates and, as appropriate, hedge our exposure with various derivative financial instruments. This activity primarily relates to brokerage funds held on behalf of clients in the U.S. and in continental Europe. A decrease in global short-term interest rates adversely affects our fiduciary investment income.

Item 4. Controls and Procedures

Evaluation of disclosure controls and procedures. We have conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), as of September 30, 2026. Based on this evaluation, our Chief Executive Officer and Interim Chief Financial Officer concluded that, as of September 30, 2026, our disclosure controls and procedures were effective at a reasonable assurance level such that the information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the SEC rules and forms, and is accumulated and communicated to our management, including our Chief Executive Officer and Interim Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in internal control over financial reporting. There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during the quarter ended September 30, 2026 that have materially affected, or that are reasonably likely to materially affect, our internal control over financial reporting.

Part II Other Information

Item 1. Legal Proceedings

See Note 15 “Claims, Lawsuits, and Other Contingencies” to our Financial Statements contained in Part I, Item 1 of this report, which is incorporated by reference herein.

Item 1A. Risk Factors

The risk factors set forth in the “Risk Factors” section in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2025 reflect certain risks associated with existing and potential lines of business and contain “forward-looking statements” as discussed in “Information Concerning Forward-Looking Statements” elsewhere in this report. Readers should consider them in addition to the other information contained in this report as our business, financial condition or results of operations could be adversely affected if any of these risks actually occur. Except as set forth below, there have been no material changes to the risk factors disclosed in our Annual Report on Form 10-K for the year ended December 31, 2025.

Risks Related to the USI Acquisition

The completion of the USI Acquisition is subject to a number of conditions, and if these conditions are not satisfied or waived on a timely basis, the USI Acquisition may not be completed.

The completion of the USI Acquisition is subject to the satisfaction or waiver of a number of conditions as set forth in the Merger Agreement, including, among others, the expiration or termination of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the “HSR Act”). There can be no assurance that the expiration or termination of the applicable waiting period under the HSR Act or the other conditions to the obligations of the parties to effect the USI Acquisition will be satisfied or waived. In particular, foreign, federal, state or local governmental or regulatory authorities and, in certain instances, private parties may seek to challenge the USI Acquisition and/or impose conditions on Aon or USI as a condition to completion of the USI Acquisition under applicable antitrust or other laws. In addition, there can be no assurance that any consents, clearances or approvals necessary or advisable to be obtained in connection with the USI Acquisition will be obtained in a timely manner or at all, or whether they will be subject to actions, conditions, limitations or restrictions that may jeopardize or delay the completion of the USI Acquisition, materially reduce or delay the anticipated benefits of the USI Acquisition or allow the parties to terminate the Merger Agreement. If we are required to divest assets or businesses related to USI, there can be no assurance that it will be able to negotiate such divestitures expeditiously or on favorable terms or that the governmental authorities will approve the terms of such divestitures. If the USI Acquisition, or the integration of the companies’ respective businesses, is not completed within the expected time frame, such delay may materially and adversely affect the synergies and other benefits that we expect to achieve as a result of the USI Acquisition and could result in additional costs or liabilities, loss of revenue and other adverse effects on our business, financial condition and results of operations.

Failure to complete the USI Acquisition could have an adverse effect on Aon.

If the USI Acquisition is not completed for any reason, our ongoing business may be adversely affected and, without realizing any of the potential benefits of completing the USI Acquisition, we will be subject to a number of risks, including the following:

•we will be required to pay certain costs and expenses relating to the USI Acquisition;

•we may experience negative reactions from the financial markets, including negative impacts on the market price of our securities;

•the manner in which clients, vendors, business partners and other third parties perceive us may be negatively impacted, which in turn could affect our ability to compete for new business or to obtain renewals in the marketplace;

•matters relating to the USI Acquisition (including integration planning) may require substantial commitments of time and resources by management, which could otherwise have been devoted to other opportunities that may have been beneficial to us; and

•we could be subject to litigation related to any failure to close the USI Acquisition or related to any enforcement proceeding commenced against us to perform our obligations under the Merger Agreement.

If the USI Acquisition does not close, these risks may materialize and may adversely affect our business, financial results and the market price of our securities.

Aon and USI are subject to various uncertainties, including contractual restrictions and requirements, while the USI Acquisition is pending that could adversely affect their businesses, financial condition and results of operations.

During the pendency of the USI Acquisition, it is possible that customers, suppliers, commercial partners and/or other persons with whom we or USI have a business relationship may elect to delay or defer certain business decisions or decide to seek to terminate, change or renegotiate their relationships with us or USI, as the case may be, as a result of the USI Acquisition, which could significantly reduce the expected benefits of the USI Acquisition and/or negatively affect our or USI’s revenues, earnings and cash flows, USI’s future plans and the market price of our securities, regardless of whether the USI Acquisition is completed. Matters relating to the USI Acquisition (including integration planning) have and will continue to require substantial commitments of time and resources by our management, which would otherwise have been devoted to day-to-day operations and other opportunities that may have been beneficial to us. We have incurred significant costs related to the USI Acquisition and associated debt financing, some of which must be paid even if the USI Acquisition is not completed. These costs are substantial and include financial advisory, legal and accounting costs. Each of these risks may be exacerbated by delays or other adverse developments with respect to the completion of the USI Acquisition.

We may not be able to integrate USI successfully or manage the combined business effectively, and many of the anticipated synergies and other benefits of the USI Acquisition may not be realized or may not be realized within the expected time frame.

We and USI entered into the Merger Agreement with the expectation that the USI Acquisition would result in various benefits, including, among other things, operating efficiencies, synergies and cost savings. Achieving the anticipated benefits of the USI Acquisition is subject to a number of uncertainties, including whether the businesses and cultures of Aon and USI can be integrated in an efficient and effective manner.

It is possible that the integration process could take longer than anticipated or that the management of the combined organizations and achievement of anticipated synergies could be more difficult than expected. The integration of USI into the Aon organization could also result in the disruption of ongoing businesses, processes, systems and business relationships or inconsistencies in standards, controls, procedures, practices, policies and compensation arrangements, any of which could adversely affect our ability to achieve the anticipated benefits of the USI Acquisition. The integration process is subject to a number of risks and uncertainties, and no assurance can be given that the anticipated benefits of the USI Acquisition will be realized or, if realized, the timing of their realization. Failure to achieve these anticipated benefits could adversely affect our future businesses, financial condition, results of operations and prospects.

We will incur significant transaction and integration-related costs in connection with the USI Acquisition, which could adversely affect our ability to execute our integration plan and achieve the anticipated benefits of the USI Acquisition.

We expect to incur a number costs associated with the USI Acquisition, combining the organizations and achieving anticipated synergies. These costs will be significant and additional unanticipated costs may also be incurred in connection with the USI Acquisition and combination of the organizations. Although we expect that the elimination of duplicative costs, as well as the realization of other efficiencies related to the integration of the businesses of Aon and USI, should allow us to offset integration-related costs over time, this net benefit may not be achieved in the near term or at all.

The global effective tax rate that will apply to Aon subsequent to the USI Acquisition is uncertain and may vary from expectations.

No assurances can be given as to what our global effective tax rate will be after the closing of the USI Acquisition because of, among other things, uncertainty regarding the global mix of income following closing, uncertainty regarding the ability, costs and time necessary to integrate USI’s business operations and entities, uncertainty regarding complex tax rules in the U.S. and the application of those rules to us following closing, and uncertainty with respect to Ireland’s Pillar Two tax regime which will apply to the combined income and taxes of Aon and USI following closing. As a result, our actual global effective tax rate may vary from expectations following the USI Acquisition and that variance may be material.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities

The following information relates to the purchase of equity securities by Aon or any affiliated purchaser during each month within the third quarter of 2026:


Period	Total Number of Shares Purchased	Average Price Paid per Share (1)		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (2)	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs (1)(2)
7/1/2026 - 7/31/2026	—	$	—	—	$	7,717,283,647
8/1/2026 - 8/31/2026	—	$	—	—	$	7,717,283,647
9/1/2026 - 9/30/2026	—	$	—	—	$	7,717,283,647
Total	—	$	—	—	$	7,717,283,647

(1)Does not include commissions paid to repurchase shares.

(2)The Repurchase Program was established in April 2012 with $5.0 billion in authorized repurchases, and was increased by $5.0 billion in authorized repurchases in each of November 2014, June 2017, and November 2020, and by $7.5 billion in each of February 2022, and June 2026, for a total of $35.0 billion in repurchase authorizations.

Unregistered Sales of Equity Securities

We did not make any unregistered sales of equity in the third quarter of 2026.

Item 3. Defaults Upon Senior Securities

Not Applicable.

Item 4. Mine Safety Disclosures

Not Applicable.

Item 5. Other Information

Not Applicable.

Item 6. Exhibits

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)

October 28, 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).
2.2^						Agreement and Plan of Merger, by and among USI Advantage Corp., Aon North America, Inc., Cortlandt Acquisition Corp., Aon plc and Uno Aggregator II L.P., as Securityholder Representative, dated as of August 30, 2026 (incorporated by reference to Exhibit 2.1 to Aon’s Current Report on Form 8-K filed with the SEC on August 31, 2026).
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 with the SEC on June 4, 2021).
4.1						Second Indenture Supplement, dated as of September 17, 2026, among the Issuers, the Guarantors and the Trustee (incorporated by reference to Exhibit 4.2 to Aon’s Current Report on Form 8-K filed with the SEC on September 17, 2026).
4.2						Form of 2029 Notes (including the Guarantees) (included as Exhibit A to Exhibit 4.1)
4.3						Form of 2031 Notes (including the Guarantees) (included as Exhibit A to Exhibit 4.1)
4.4						Form of 2033 Notes (including the Guarantees) (included as Exhibit A to Exhibit 4.1)
4.5						Form of 2036 Notes (including the Guarantees) (included as Exhibit A to Exhibit 4.1)
4.6						Form of 2038 Notes (including the Guarantees) (included as Exhibit A to Exhibit 4.1)
4.7						Form of 2046 Notes (including the Guarantees) (included as Exhibit A to Exhibit 4.1)
4.8						Form of 2056 Notes (including the Guarantees) (included as Exhibit A to Exhibit 4.1)
10.1#						Letter Agreement, dated as of August 17, 2026, by and between Edmund Reese and Aon Corporation (incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed with the SEC on August 17, 2026).
10.2						Term Loan Credit Agreement, dated as of September 18, 2026, by and among Aon North America, Inc., Aon plc, Aon Corporation, Aon Global Holdings plc and Aon Global Limited, Citibank, N.A., as administrative agent, BofA Securities, Inc., as syndication agent, and the lenders party thereto (incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed with the SEC on September 22, 2026).
10.3						Revolving Credit Agreement, dated as of September 18, 2026, by and among Aon North America, Inc., Aon Corporation, Aon Global Holdings plc, Aon UK Limited, Aon Global Limited, Aon plc, as guarantor, Citibank, N.A., as administrative agent, BofA Securities, Inc., as syndication agent, and the lenders party thereto (incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K filed with the SEC on September 22, 2026).
22.1*						Subsidiary Guarantors and Issuers of Guaranteed Securities.
31.1*						Certification of CEO.
31.2*						Certification of Interim CFO.
32.1**						Certification of CEO Pursuant to section 1350 of Title 18 of the United States Code.
32.2**						Certification of Interim 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)
# Indicates a management contract or compensatory plan or arrangement
* Filed herewith
** Furnished herewith
^ Certain exhibits and schedules have been omitted pursuant to Item 601(b)(2) of Regulation S-K. Aon hereby undertakes to furnish supplemental copies of any of the omitted exhibits and schedules upon request by the SEC; provided, however, that Aon may request confidential treatment pursuant to Rule 24b-2 of the Securities Exchange Act of 1934, as amended, for any exhibits or schedules so furnished.