AON · NYSE · CIK 0000315293

Aon plc

Aon plc’s most recent SEC filing in our snapshot is a Form SCHEDULE 13G/A filed on Oct 16, 2026. In fiscal 2025 (year ended Dec 31, 2025) it reported revenue of $17.2B and net income of $3.7B, according to its XBRL data on EDGAR. Its EDGAR record lists 42 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2025
$17.2B
Net income, FY2025
$3.7B
Form 4 filings on record, past 12 months
42

Company overview

Legal name (as filed)
Aon plc
Ticker
AON
SEC Central Index Key (CIK)
0000315293
Industry (SIC)
Insurance Agents, Brokers & Service (code 6411)
Business address
DUBLIN 2, Ireland
State or country of incorporation
Ireland
Fiscal year ends
December 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#262 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from Aon plc’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
$12.2BFY2021$12.5BFY2022$13.4BFY2023$15.7BFY2024$17.2BFY2025
Net income
$1.3BFY2021$2.6BFY2022$2.6BFY2023$2.7BFY2024$3.7BFY2025
AON annual results
ItemFY2021
ended Dec 31, 2021		FY2022
ended Dec 31, 2022		FY2023
ended Dec 31, 2023		FY2024
ended Dec 31, 2024		FY2025
ended Dec 31, 2025
Revenue$12.2B$12.5B$13.4B$15.7B$17.2B
Net income$1.3B$2.6B$2.6B$2.7B$3.7B
Diluted EPS$5.55$12.14$12.51$12.49$17.02
Total assets$31.9B$32.7B$34.0B$49.0B$50.8B
Cash and equivalents$544.0M$690.0M$778.0M$1.1B$1.2B

XBRL tags used: revenue = RevenueFromContractWithCustomerExcludingAssessedTax; netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

AON latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Feb 13, 202610-KAnnual report· period Dec 31, 2025Document · Index
Jul 29, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Sep 22, 20268-KMaterial agreement; Agreement terminated; New financial obligation· period Sep 18, 2026Document · Index
Apr 28, 2026DEF 14ADefinitive proxy statement· period Jun 26, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about Aon plc, by form type:

4 ×188-K ×7144 ×4424B5 ×210-Q ×23 ×1SCHEDULE 13G/A ×1CERT ×18-A12B ×1FWP ×1SCHEDULE 13G ×1S-3ASR ×1
AON recent filings
FiledFormWhat it isOriginal
Oct 16, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Sep 22, 20268-KMaterial agreement; Agreement terminated; New financial obligation· period Sep 18, 2026Document · Index
Sep 18, 2026CERTNYSE CERTIFICATIONDocument · Index
Sep 17, 20268-A12B8-A12BDocument · Index
Sep 17, 20268-KOther events· period Sep 14, 2026Document · Index
Sep 15, 2026424B5424B5Document · Index
Sep 14, 2026FWPFWPDocument · Index
Sep 11, 2026424B5424B5Document · Index
Sep 11, 20268-KOther events· period Sep 11, 2026Document · Index
Sep 3, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 2, 2026Document · Index
Aug 31, 20268-KMaterial agreement; Regulation FD disclosure· period Aug 30, 2026Document · Index
Aug 26, 20263Initial statement of beneficial ownership· period Aug 17, 2026Document · Index
Aug 17, 20268-KDirector or officer change· period Aug 17, 2026Document · Index
Jul 30, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 28, 2026Document · Index
Jul 29, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Jul 29, 20268-KResults of operations· period Jul 29, 2026Document · Index
Jul 28, 2026144Notice of proposed sale of securitiesDocument · Index
Jul 21, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 17, 2026Document · Index
Jul 17, 2026144Notice of proposed sale of securitiesDocument · Index
Jul 16, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Jul 9, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 7, 2026Document · Index
Jul 7, 2026144Notice of proposed sale of securitiesDocument · Index
Jul 6, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 1, 2026Document · Index
Jul 2, 2026S-3ASRSimplified registration statementDocument · Index
Jul 1, 20268-KDirector or officer change; Shareholder vote results; Other events· period Jun 26, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 29, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 25, 2026Document · Index
Jun 4, 2026144Notice of proposed sale of securitiesDocument · Index
May 14, 20264Statement of changes in beneficial ownership (insider trade)· period May 12, 2026Document · Index
May 1, 202610-QQuarterly report· period Mar 31, 2026Document · Index

Insider filing activity

42 Form 4 filings appear in Aon plc’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0000315293 and XBRL company facts. Aon plc on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.