Aon plc SEC filings AON
Aon plc has 1,000 filings in SEC EDGAR's recent list, going back to Oct 3, 2014. Its latest annual report, Form ARS, was filed on Apr 28, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 28, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 28, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Oct 28, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2026 | Oct 28, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 16, 2026 | — |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Sep 22, 2026 | Sep 18, 2026 |
| CERT | Nyse certification | Sep 18, 2026 | — |
| 8-A12B | Filing | Sep 17, 2026 | — |
| 8-K |
Current report
Other events
|
Sep 17, 2026 | Sep 14, 2026 |
| 424B5 | Prospectus supplement | Sep 15, 2026 | — |
| FWP | Free writing prospectus | Sep 14, 2026 | — |
| 424B5 | Prospectus supplement | Sep 11, 2026 | — |
| 8-K |
Current report
Other events
|
Sep 11, 2026 | Sep 11, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 2, 2026 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Aug 31, 2026 | Aug 30, 2026 |
| 3 | Initial insider ownership | Aug 26, 2026 | Aug 17, 2026 |
| 8-K |
Current report
Officer or director change
|
Aug 17, 2026 | Aug 17, 2026 |
| 4 | Insider transaction | Jul 30, 2026 | Jul 28, 2026 |
| 10-Q | Quarterly report | Jul 29, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2026 | Jul 29, 2026 |
| 144 | Notice of proposed sale | Jul 28, 2026 | — |
| 4 | Insider transaction | Jul 21, 2026 | Jul 17, 2026 |
| 144 | Notice of proposed sale | Jul 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 16, 2026 | — |
| 4 | Insider transaction | Jul 9, 2026 | Jul 7, 2026 |
| 144 | Notice of proposed sale | Jul 7, 2026 | — |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| S-3ASR | Automatic shelf registration | Jul 2, 2026 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
Jul 1, 2026 | Jun 26, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 144 | Notice of proposed sale | Jun 4, 2026 | — |
| 4 | Insider transaction | May 14, 2026 | May 12, 2026 |
| 10-Q | Quarterly report | May 1, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 1, 2026 | May 1, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| ARS | Annual report to shareholders | Apr 28, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 28, 2026 | — |
| DEF 14A | Proxy statement | Apr 28, 2026 | Jun 26, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 26, 2026 |
| 144 | Notice of proposed sale | Feb 26, 2026 | — |
| 4 | Insider transaction | Feb 20, 2026 | Feb 19, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 25-NSE | Delisting notice | Feb 17, 2026 | — |
| 144 | Notice of proposed sale | Feb 17, 2026 | — |
| 10-K | Annual report | Feb 13, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Feb 12, 2026 | Feb 10, 2026 |
| 8-K |
Current report
Results of operations
|
Jan 30, 2026 | Jan 30, 2026 |
| 8-K |
Current report
Officer or director change
|
Jan 7, 2026 | Jan 6, 2026 |
| 8-K |
Current report
Officer or director change
|
Jan 2, 2026 | Dec 31, 2025 |
| 25-NSE | Delisting notice | Dec 15, 2025 | — |
| 4 | Insider transaction | Dec 9, 2025 | Dec 5, 2025 |
| 144 | Notice of proposed sale | Nov 25, 2025 | — |
| 4 | Insider transaction | Nov 25, 2025 | Nov 21, 2025 |
| 4 | Insider transaction | Nov 25, 2025 | Nov 21, 2025 |
| 4 | Insider transaction | Nov 25, 2025 | Nov 21, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 12, 2025 |
| 4 | Insider transaction | Nov 7, 2025 | Nov 5, 2025 |
| 144 | Notice of proposed sale | Nov 5, 2025 | — |
| 10-Q | Quarterly report | Oct 31, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2025 | Oct 31, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 30, 2025 | Oct 30, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| 3 | Initial insider ownership | Sep 23, 2025 | Sep 15, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 3, 2025 | Sep 3, 2025 |
| 3 | Initial insider ownership | Aug 19, 2025 | Aug 15, 2025 |
| 8-K |
Current report
Officer or director change
|
Aug 4, 2025 | Aug 1, 2025 |
| 8-K |
Current report
Officer or director change
|
Jul 29, 2025 | Jul 29, 2025 |
| S-8 | Employee stock plan registration | Jul 25, 2025 | — |
| 10-Q | Quarterly report | Jul 25, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 25, 2025 | Jul 25, 2025 |
| 3 | Initial insider ownership | Jul 7, 2025 | Jun 27, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jul 3, 2025 | Jun 27, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 29, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2025 | — |
| ARS | Annual report to shareholders | Apr 28, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 28, 2025 | — |
| DEF 14A | Proxy statement | Apr 28, 2025 | Jun 27, 2025 |
| 10-Q | Quarterly report | Apr 25, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 25, 2025 | Apr 25, 2025 |
| 8-K |
Current report
Officer or director change
|
Apr 10, 2025 | Apr 7, 2025 |
| 3 | Initial insider ownership | Mar 26, 2025 | Mar 17, 2025 |
| 3 | Initial insider ownership | Mar 26, 2025 | Mar 17, 2025 |
| 4 | Insider transaction | Mar 25, 2025 | Mar 14, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 17, 2025 | Mar 14, 2025 |
| 8-K |
Current report
Officer or director change
|
Mar 13, 2025 | Mar 13, 2025 |
| 4 | Insider transaction | Feb 24, 2025 | Feb 21, 2025 |
| 4 | Insider transaction | Feb 19, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 10-K | Annual report | Feb 18, 2025 | Dec 31, 2024 |
| 144 | Notice of proposed sale | Feb 10, 2025 | — |
| 8-K |
Current report
Results of operations
|
Jan 31, 2025 | Jan 31, 2025 |
| 4 | Insider transaction | Dec 2, 2024 | Nov 27, 2024 |
| 4 | Insider transaction | Nov 29, 2024 | Nov 26, 2024 |
| 144 | Notice of proposed sale | Nov 27, 2024 | — |
| 144 | Notice of proposed sale | Nov 26, 2024 | — |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 13, 2024 | — |
| 10-Q | Quarterly report | Oct 25, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 25, 2024 | Oct 25, 2024 |
| 4 | Insider transaction | Sep 19, 2024 | Sep 17, 2024 |
| 4 | Insider transaction | Sep 19, 2024 | Sep 17, 2024 |
| 4 | Insider transaction | Sep 17, 2024 | Sep 13, 2024 |
| 4 | Insider transaction | Aug 29, 2024 | Aug 28, 2024 |
| 3 | Initial insider ownership | Aug 26, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 14, 2024 | Aug 12, 2024 |
| 4 | Insider transaction | Aug 14, 2024 | Aug 12, 2024 |
| 144 | Notice of proposed sale | Aug 12, 2024 | — |
| 144 | Notice of proposed sale | Aug 12, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Aug 9, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 6, 2024 |
| 3 | Initial insider ownership | Aug 7, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 30, 2024 | Jul 26, 2024 |
| 144 | Notice of proposed sale | Jul 30, 2024 | — |
| 10-Q | Quarterly report | Jul 26, 2024 | Jun 30, 2024 |
| 144 | Notice of proposed sale | Jul 26, 2024 | — |
| 8-K |
Current report
Results of operations
|
Jul 26, 2024 | Jul 26, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 26, 2024 | Jun 21, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 25-NSE | Delisting notice | Jun 14, 2024 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 4, 2024 | May 30, 2024 |
| 4 | Insider transaction | May 23, 2024 | May 21, 2024 |
| 4 | Insider transaction | May 23, 2024 | May 21, 2024 |
| DEFA14A | Additional proxy material | May 21, 2024 | — |
| 4 | Insider transaction | May 9, 2024 | May 8, 2024 |
| 4 | Insider transaction | May 7, 2024 | May 3, 2024 |
| ARS | Annual report to shareholders | Apr 29, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 29, 2024 | — |
| DEF 14A | Proxy statement | Apr 29, 2024 | Jun 21, 2024 |
| 10-Q | Quarterly report | Apr 26, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
Apr 26, 2024 | Apr 26, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 25, 2024 | Apr 25, 2024 |
| EFFECT | Filing | Apr 23, 2024 | — |
| 424B3 | Prospectus | Apr 23, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 19, 2024 | Apr 19, 2024 |
| CORRESP | Letter to the SEC | Apr 19, 2024 | — |
| S-4/A | Filing | Apr 19, 2024 | — |
| 8-K |
Current report
Material agreement
|
Apr 19, 2024 | Apr 16, 2024 |
| CORRESP | Letter to the SEC | Apr 18, 2024 | — |
| 10-K/A | Amended annual report | Apr 17, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 16, 2024 | Apr 15, 2024 |
| 8-K |
Current report
Officer or director change
|
Apr 3, 2024 | Apr 1, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 2, 2024 | Apr 2, 2024 |
| S-4/A | Filing | Mar 29, 2024 | — |
| CORRESP | Letter to the SEC | Mar 29, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Mar 27, 2024 | Mar 21, 2024 |
| UPLOAD | Letter from the SEC | Mar 22, 2024 | — |
| 4 | Insider transaction | Mar 19, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 18, 2024 | Mar 15, 2024 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Insurance Agents, Brokers & Service (SIC 6411)
- Listed as
- AON (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- Ireland
- Headquarters
- Dublin 2, Ireland
- SEC filer status
- Large accelerated filer
- SEC CIK
- 315293
- Former names
- AON CORP (until Apr 2, 2012)
Other Insurance Agents, Brokers & Service companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.