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AONNYSE
Aon plc
Insurance Agents, Brokers & Service · L2 · CIK 315293
Aon provides actionable analytic insight and expertise to help clients make better risk and people decisions
⚡ Elevated coverage
$71.61B
Market cap
$327.57
Last close
-0.3%
1D
+4.4%
5D
1.4M
Volume
Price · last 39 sessions+4.0%
May 4L $308.27 · H $336.33Jun 29
290
Total filings
May 1, 2026
Last filing
12/31
Fiscal year end
8-KResults of OperationsMay 1, 20268-KResults of OperationsJan 30, 20268-KExecutive ChangeJan 7, 20268-KExecutive ChangeJan 2, 20268-KResults of OperationsOct 31, 20258-KReg FD DisclosureOct 30, 20258-KReg FD DisclosureSep 3, 20258-KExecutive ChangeAug 4, 20258-KExecutive ChangeJul 29, 20258-KResults of OperationsJul 25, 20258-KExecutive Change · Shareholder VoteJul 3, 20258-KResults of OperationsApr 25, 20258-KExecutive ChangeApr 10, 20258-KExecutive Change · Reg FD DisclosureMar 17, 20258-KExecutive ChangeMar 13, 20258-KResults of OperationsJan 31, 20258-KResults of OperationsOct 25, 20248-KExecutive ChangeAug 9, 20248-KResults of OperationsJul 26, 20248-KExecutive Change · Shareholder VoteJun 26, 20248-KExecutive Change · Reg FD DisclosureJun 4, 20248-KResults of OperationsApr 26, 20248-KReg FD DisclosureApr 25, 20248-KReg FD DisclosureApr 19, 20248-KMaterial AgreementApr 19, 20248-KReg FD DisclosureApr 16, 20248-KExecutive ChangeApr 3, 20248-KReg FD DisclosureApr 2, 20248-KExecutive ChangeMar 27, 20248-KCompany UpdateMar 1, 20248-KReg FD DisclosureFeb 21, 20248-KExecutive ChangeFeb 16, 20248-KResults of OperationsFeb 2, 20248-KExecutive ChangeJan 25, 20248-KMaterial Agreement · Reg FD DisclosureDec 20, 20238-KResults of OperationsOct 27, 20238-KMaterial Agreement · Agreement TerminatedOct 24, 20238-KResults of OperationsJul 28, 20238-KExecutive Change · Shareholder VoteJun 22, 20238-KMaterial Agreement · Company UpdateJun 22, 20238-KResults of OperationsApr 28, 20238-KExecutive ChangeApr 12, 20238-KCompany UpdateFeb 28, 20238-KResults of OperationsFeb 3, 20238-KResults of OperationsOct 28, 20228-KMaterial AgreementOct 21, 20228-KExecutive ChangeSep 22, 20228-KCompany UpdateSep 12, 20228-KExecutive ChangeSep 6, 20228-KExecutive ChangeAug 9, 20228-KResults of OperationsJul 29, 20228-KExecutive Change · Shareholder VoteJun 23, 20228-KResults of OperationsApr 29, 20228-KCompany UpdateFeb 28, 20228-KCompany UpdateFeb 28, 20228-KExecutive ChangeFeb 18, 20228-KResults of OperationsFeb 4, 20228-KCompany UpdateDec 3, 20218-KCompany UpdateDec 2, 20218-KResults of OperationsOct 29, 20218-KMaterial Agreement · Agreement TerminatedSep 30, 20218-KReg FD DisclosureSep 15, 20218-KCompany UpdateAug 23, 20218-KResults of OperationsJul 30, 20218-KExecutive Change · Material AgreementJul 26, 20218-KExecutive ChangeJul 1, 20218-KReg FD DisclosureJun 21, 20218-KBylaw Amendment · Shareholder VoteJun 4, 20218-KReg FD DisclosureJun 3, 20218-KReg FD DisclosureMay 12, 20218-KResults of OperationsApr 30, 20218-KResults of OperationsFeb 5, 20218-KExecutive ChangeJan 29, 20218-KCompany UpdateJan 13, 20218-KExecutive Change · Material AgreementOct 30, 20208-KResults of OperationsOct 30, 20208-KShareholder Vote · Company UpdateAug 26, 20208-KResults of OperationsJul 31, 20208-KReg FD DisclosureJun 30, 20208-KExecutive Change · Shareholder VoteJun 25, 2020
Insider Activity
In the 90 days to Feb 26, 2026: 1 insider bought $1.3M · 1 sold $3.1M.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Feb 26, 2026 | Zeidel DarrenGeneral Counsel | Sell | 4,300 | $329.72 | $1.4M |
| Feb 17, 2026 | Zeidel DarrenGeneral Counsel | Sell | 5,040 | $325.79 | $1.6M |
| Feb 10, 2026 | Knight Lester BDirector | Buy | 4,000 | $319.24 | $1.3M |
| Nov 5, 2025 | Zeidel DarrenGeneral Counsel | Sell | 7,570 | $344.42 | $2.6M |
| Nov 5, 2025 | Zeidel DarrenGeneral Counsel | Sell | 1,230 | $345.17 | $425K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
What Changed
Risk factors · Feb 18, 2025 → Feb 13, 202623 added · 29 removed between the two most recent 10-Ks. The risks a company starts — or stops — disclosing are often the story.
Newly disclosed
- Further, new and non- traditional competitors (including “InsurTech” firms utilizing artificial intelligence or 11 other advanced technologies), our clients’ increasing ability and determination to self-insure, and capital market alternatives to traditional insurance and reinsurance markets create an even more dynamic, competitive, and innovative market environment that could affect our business.
- Certain use cases of artificial intelligence in our business processes could pose strategic, operational, legal, ethical, regulatory or reputational risks where there may be incorrect outputs or bias in those systems or processes, potential infringement of intellectual property rights, exposure of proprietary or personal information, heightened cybersecurity risks and challenges in safely deploying, governing or controlling artificial intelligence systems or where there is inadequate human oversight.
- Furthermore, integration of acquisitions, including the NFP acquisition, could divert management’s attention from other business concerns and involve inconsistencies in standards, controls, procedures, practices, policies and compensation arrangements, any of which could adversely affect our ability to achieve the anticipated benefits of a given acquisition or otherwise negatively impact our business.
- Regulation in the areas of data privacy, data protection, data management, data transfer, data localization, artificial intelligence, and cybersecurity could increase our costs and affect or limit our business opportunities.
- A growing number of jurisdictions, particularly in the E.U. and U.S., have introduced and enacted laws and regulations regarding the responsible development and use of artificial intelligence and similar tools.
- Furthermore, our subsidiaries may be unable to make timely payments to us when needed, which could impair our ability to meet our obligations, pay dividends, repurchase shares, or fund other aspects of our operations and corporate expenses.
- Increased scrutiny of corporate sustainability claims, and changes in client and investor preferences may also create legal, regulatory, contractual, and reputational risks and could require changes to our products, services, client engagements or operations, which may increase our cost of doing business.
- Accepting this revenue is a lawful and generally commercially accepted business practice that may nonetheless be subject to scrutiny by various regulators under conflict of interest, anti-trust, unfair competition and anti-bribery laws and regulations, subject to legal or regulatory change, or negatively impacted by internal controls that are not fully effective.
- In addition, there is some uncertainty as to whether the courts of Ireland would recognize or enforce judgments of U.S. courts obtained against us or our directors or officers based on the civil liabilities provisions of the U.S. federal or state securities laws or hear actions against us or those persons based on those laws.
- As of December 31, 2025, we had two primary committed credit facilities outstanding.
- Additionally, competition for professional 20 personnel remains intense, and competitors are using increasingly aggressive measures to recruit professional talent in our industry.
- It may not be possible to enforce court judgments obtained in the U.S. against us in Ireland, based on the civil liability provisions of the U.S. federal or state securities laws.
No longer disclosed
- The credit facilities are intended to support our commercial paper obligations and our general working capital needs, and the delayed draw term loan was drawn upon in full in April 2024 to support the acquisition of NFP.
- Risks Related to the Acquisition of NFP • We may not be able to integrate the NFP business successfully or manage the combined business effectively, and many of the anticipated synergies and other benefits may not be realized or may not be realized within the expected time frame. • We have incurred and may continue to incur significant integration-related costs in connection with the acquisition of NFP.
- Certain use cases of artificial intelligence in our business processes could pose operational, legal or reputational risks where there may be incorrect outputs or bias in those systems or processes, or where there is inadequate human oversight.
- Risks Related to the Acquisition of NFP We may not be able to integrate the NFP business successfully or manage the combined business effectively, and many of the anticipated synergies and other benefits of acquiring NFP may not be realized or may not be realized within the expected time frame.
- The integration of NFP into our 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 Aon’s ability to achieve the anticipated benefits of the NFP acquisition or otherwise negatively impact our business.
- Aon has incurred and expects to continue to incur a number of non-recurring costs associated with the NFP acquisition and combining the operations of the two companies, which could adversely affect Aon’s ability to execute its integration plan and achieve the anticipated benefits of the NFP acquisition.
- A growing number of jurisdictions, particularly in the U.S., have introduced and enacted laws and regulations regarding automated decision making that may encompass artificial intelligence and non-artificial intelligence algorithmic tools.
- The integration process is subject to a number of risks and uncertainties, and no assurance can be given that the anticipated benefits of the acquisition will be realized or, if realized, the timing of their realization.
- We have devoted management attention and resources to integrating our and NFP's business practices so that we can fully realize the anticipated benefits of the NFP acquisition.
- We have incurred and may continue to incur significant integration-related costs in connection with the acquisition of NFP.
- As of December 31, 2024, we had two primary committed credit facilities outstanding, as well as a delayed draw term loan.
- Further, new and non- traditional competitors, our clients’ increasing ability and determination to self-insure, and capital market alternatives to traditional insurance and reinsurance markets cause additional forms of competition and innovation that could affect our business.
In the News
⚡ Elevated coverageCoverage (30d): 6 reputable articles.
MarketWatchAon PLC stock outperforms competitors despite losses on the day12d agoMarketWatchAon PLC stock underperforms Monday when compared to competitors14d agoMarketWatchAon PLC stock outperforms competitors on strong trading day19d agoMarketWatchAon PLC stock underperforms Tuesday when compared to competitors despite daily gains20d agoMarketWatchAon PLC stock underperforms Friday when compared to competitors despite daily gains25d agoMarketWatchAon PLC stock underperforms Monday when compared to competitors despite daily gains28d ago
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