AONAon plc

Financials · Insurance Brokers · NYSE

Aon plc (which may be referred to as “Aon,” the “Company,” “we,” “us,” or “our”) is a leading global professional services firm. 10-K, Item 1

Employees: 60,000
Headquarters: Dublin 2, L2
CEO: Gregory C. Case
Next results: around Jan 29, 2027

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Key numbers

Latest fiscal year, with ten years behind each

RevenueFY2016–25 $17.2B+9.4% Highest in 10 years 10-K FY2025 · XBRL Net incomeFY2016–25 $3.7B+39.2% Highest in 10 years 10-K FY2025 · XBRL Free cash flowFY2016–25 $3.2B+14.2% Highest in 10 years 10-K FY2025 · XBRL Operating marginFY2016–25 25.3%+0.9 pts 19.2% in FY2016 10-K FY2025 · XBRL

What changed

10-K filed Feb 13, 2026 against Feb 18, 2025

Area	What changed	Source
Risk factors	7 new paragraphs, nothing like them in the previous 10-K	10-K Item 1A
Accounting checks	9 other checks clear	10-K · XBRL
Insiders	6 open-market buys in the last 90 days	Form 4
Filings	2 in the last 30 days	EDGAR

Each row opens the detail with the quote and the filing. A row is a change worth reading, not a verdict.

What's new, in their words

10-K filed Feb 13, 2026

Paragraphs in Risk Factors that were not in the 10-K filed 2025-02-18. Quoted as filed.

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.
10-K, Item 1A

All 7 new paragraphs →

Accounting checks

latest 10-K

9 of 9 clear 0 worth a look. Checks, not verdicts.

✓
Receivables +10.7% vs revenue +9.4% (+1.2 pts)
✓
Same auditor in both 10-Ks: Ernst & Young LLP
✓
No statement of substantial doubt about going concern
✓
No 8-K item 4.02 in the last 2 years
✓
No NT 10-K or NT 10-Q in the last 2 years
✓
No longer listed: Valuation of customer relationship intangible assets in the acquisition of NFP. Same as last year: Realizability of Deferred Tax Assets
✓
No sentence in the 10-K concludes that controls were not effective because of a material weakness
✓
No 8-K item 2.06 in the last 2 years
✓
No 8-K item 1.03 in the last 2 years

How each check works, with sources →

In the last 30 days

All filings →

Oct 28, 20268-K Quarterly results 8-K item 2.02
Oct 28, 202610-Q Quarterly report (10-Q) period ended Sep 30, 2026

About Aon plc

10-K, Feb 13, 2026

Aon plc (which may be referred to as “Aon,” the “Company,” “we,” “us,” or “our”) is a leading global professional services firm. Through actionable analytic insight, globally integrated Risk Capital and Human Capital expertise and locally relevant solutions, our colleagues provide clients with the clarity and confidence to make better risk and people decisions that protect and grow their businesses. With clients around the world facing growing uncertainty and volatility, we remain focused on accelerating our Aon United strategy to serve clients as one globally connected firm and driving innovation to address unmet and evolving client need.

Headquarters: Dublin 2, L2
Country: United States
Reports in: USD
Listed on: NYSE
Fiscal year ends: December 31
Last results: Oct 28, 2026
Incorporated in: Ireland

Employees, at the top of the page: "As of December 31, 2025, we employed approximately 60,000 employees and conducted our operations in more than 120 countries" (10-K). Address and exchange: SEC's company file.

Permanent link, kept if the ticker changes: /c/sec:0000315293 (SEC's CIK).

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Work on AON in a spreadsheet: Excel workbook (a sheet per section, ten years by column, charts, links to the filings) · CSV. For a Google Sheet that stays up to date, paste =IMPORTDATA("https://tickdelta.com/company/AON/export.csv") into a cell.