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 |
| 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 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Aug 31, 2026 | Aug 30, 2026 |
| 8-K |
Current report
Officer or director change
|
Aug 17, 2026 | Aug 17, 2026 |
| 10-Q | Quarterly report | Jul 29, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2026 | Jul 29, 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 |
| 10-Q | Quarterly report | May 1, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 1, 2026 | May 1, 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 |
| 25-NSE | Delisting notice | Feb 17, 2026 | — |
| 10-K | Annual report | Feb 13, 2026 | Dec 31, 2025 |
| 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 | — |
| 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 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 3, 2025 | Sep 3, 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 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jul 3, 2025 | Jun 27, 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 |
| 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 |
| 10-K | Annual report | Feb 18, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Jan 31, 2025 | Jan 31, 2025 |
| 10-Q | Quarterly report | Oct 25, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 25, 2024 | Oct 25, 2024 |
| 8-K |
Current report
Officer or director change
|
Aug 9, 2024 | Aug 5, 2024 |
| 10-Q | Quarterly report | Jul 26, 2024 | Jun 30, 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 |
| 25-NSE | Delisting notice | Jun 14, 2024 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 4, 2024 | May 30, 2024 |
| DEFA14A | Additional proxy material | May 21, 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 | — |
| CERT | Nyse certification | Mar 15, 2024 | — |
| 8-A12B | Filing | Mar 1, 2024 | — |
| 8-K |
Current report
Other events
|
Mar 1, 2024 | Feb 28, 2024 |
| 424B5 | Prospectus supplement | Feb 29, 2024 | — |
| FWP | Free writing prospectus | Feb 29, 2024 | — |
| 424B5 | Prospectus supplement | Feb 27, 2024 | — |
| S-4 | Registration for a merger or exchange | Feb 26, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 21, 2024 | Feb 21, 2024 |
| 10-K | Annual report | Feb 16, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Officer or director change
|
Feb 16, 2024 | Feb 13, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 2, 2024 | Feb 2, 2024 |
| 8-K |
Current report
Officer or director change
|
Jan 25, 2024 | Jan 22, 2024 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Dec 20, 2023 | Dec 19, 2023 |
| 25-NSE | Delisting notice | Nov 27, 2023 | — |
| S-8 | Employee stock plan registration | Nov 20, 2023 | — |
| 10-Q | Quarterly report | Oct 27, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Oct 27, 2023 | Oct 27, 2023 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Oct 24, 2023 | Oct 19, 2023 |
| 10-Q | Quarterly report | Jul 28, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2023 | Jul 28, 2023 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 22, 2023 | Jun 16, 2023 |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-A12B | Filing | Jun 22, 2023 | — |
| 8-K |
Current report
Material agreement, Other events
|
Jun 22, 2023 | Jun 22, 2023 |
| S-3ASR | Automatic shelf registration | Jun 22, 2023 | — |
| ARS | Annual report to shareholders | Apr 28, 2023 | Dec 31, 2022 |
| 10-Q | Quarterly report | Apr 28, 2023 | Mar 31, 2023 |
| DEFA14A | Additional proxy material | Apr 28, 2023 | — |
| DEF 14A | Proxy statement | Apr 28, 2023 | — |
| 8-K |
Current report
Results of operations
|
Apr 28, 2023 | Apr 28, 2023 |
| 8-K |
Current report
Officer or director change
|
Apr 12, 2023 | Apr 7, 2023 |
| CERT | Nyse certification | Mar 1, 2023 | — |
| 8-A12B | Filing | Feb 28, 2023 | — |
| 8-K |
Current report
Other events
|
Feb 28, 2023 | Feb 23, 2023 |
| 424B5 | Prospectus supplement | Feb 24, 2023 | — |
| FWP | Free writing prospectus | Feb 23, 2023 | — |
| 424B5 | Prospectus supplement | Feb 23, 2023 | — |
| 10-K | Annual report | Feb 17, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 3, 2023 | Feb 3, 2023 |
| UPLOAD | Letter from the SEC | Jan 25, 2023 | — |
| CORRESP | Letter to the SEC | Jan 10, 2023 | — |
| UPLOAD | Letter from the SEC | Dec 23, 2022 | — |
| 10-Q | Quarterly report | Oct 28, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2022 | Oct 28, 2022 |
| 8-K |
Current report
Material agreement
|
Oct 21, 2022 | Oct 19, 2022 |
| 8-K |
Current report
Officer or director change
|
Sep 22, 2022 | Sep 21, 2022 |
| CERT | Nyse certification | Sep 13, 2022 | — |
| 8-K |
Current report
Other events
|
Sep 12, 2022 | Sep 7, 2022 |
| 8-A12B | Filing | Sep 12, 2022 | — |
| 424B5 | Prospectus supplement | Sep 8, 2022 | — |
| FWP | Free writing prospectus | Sep 7, 2022 | — |
| 424B5 | Prospectus supplement | Sep 7, 2022 | — |
| 8-K |
Current report
Officer or director change
|
Sep 6, 2022 | Sep 1, 2022 |
| 8-K |
Current report
Officer or director change
|
Aug 9, 2022 | Aug 4, 2022 |
| 10-Q | Quarterly report | Jul 29, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2022 | Jul 29, 2022 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 23, 2022 | Jun 17, 2022 |
| DEFA14A | Additional proxy material | Apr 29, 2022 | — |
| 10-Q | Quarterly report | Apr 29, 2022 | Mar 31, 2022 |
| DEF 14A | Proxy statement | Apr 29, 2022 | Jun 17, 2022 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2022 | Apr 29, 2022 |
| CERT | Nyse certification | Mar 1, 2022 | — |
| CERT | Nyse certification | Mar 1, 2022 | — |
| 8-K |
Current report
Other events
|
Feb 28, 2022 | Feb 23, 2022 |
| 8-A12B | Filing | Feb 28, 2022 | — |
| 8-A12B | Filing | Feb 28, 2022 | — |
| 8-K |
Current report
Other events
|
Feb 28, 2022 | Feb 25, 2022 |
| 424B5 | Prospectus supplement | Feb 25, 2022 | — |
| FWP | Free writing prospectus | Feb 23, 2022 | — |
| 424B5 | Prospectus supplement | Feb 23, 2022 | — |
| 10-K | Annual report | Feb 18, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Officer or director change
|
Feb 18, 2022 | Feb 14, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2022 | Feb 4, 2022 |
| CERT | Nyse certification | Dec 3, 2021 | — |
| 8-K |
Current report
Other events
|
Dec 3, 2021 | Nov 29, 2021 |
| 8-A12B | Filing | Dec 2, 2021 | — |
| 8-K |
Current report
Other events
|
Dec 2, 2021 | Nov 29, 2021 |
| 424B5 | Prospectus supplement | Dec 1, 2021 | — |
| FWP | Free writing prospectus | Nov 29, 2021 | — |
| 424B5 | Prospectus supplement | Nov 29, 2021 | — |
| 10-Q | Quarterly report | Oct 29, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2021 | Oct 29, 2021 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Sep 30, 2021 | Sep 28, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 15, 2021 | Sep 15, 2021 |
| CERT | Nyse cert | Aug 24, 2021 | — |
| CERT | Nyse certification | Aug 24, 2021 | — |
| 8-A12B | Filing | Aug 23, 2021 | — |
| 8-A12B | Filing | Aug 23, 2021 | — |
| 8-K |
Current report
Other events
|
Aug 23, 2021 | Aug 23, 2021 |
| 424B5 | Prospectus supplement | Aug 20, 2021 | — |
| FWP | Free writing prospectus | Aug 18, 2021 | — |
| 424B5 | Prospectus supplement | Aug 18, 2021 | — |
| 10-Q | Quarterly report | Jul 30, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2021 | Jul 30, 2021 |
| 8-K |
Current report
Material agreement, Agreement ended, Officer or director change, Regulation FD disclosure
|
Jul 26, 2021 | Jul 26, 2021 |
| 8-K |
Current report
Officer or director change
|
Jul 1, 2021 | Jun 25, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 21, 2021 | Jun 16, 2021 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Jun 4, 2021 | Jun 2, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 3, 2021 | Jun 3, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
May 12, 2021 | May 12, 2021 |
| 10-Q | Quarterly report | Apr 30, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2021 | Apr 30, 2021 |
| DEFA14A | Additional proxy material | Apr 15, 2021 | — |
| DEF 14A | Proxy statement | Apr 15, 2021 | Jun 2, 2021 |
| PRE 14A | Preliminary proxy statement | Mar 26, 2021 | May 25, 2021 |
| 10-K | Annual report | Feb 19, 2021 | Dec 31, 2020 |
| 25-NSE | Delisting notice | Feb 16, 2021 | — |
| 8-K |
Current report
Results of operations
|
Feb 5, 2021 | Feb 5, 2021 |
| 8-K |
Current report
Officer or director change
|
Jan 29, 2021 | Jan 25, 2021 |
| 8-K |
Current report
Other events
|
Jan 13, 2021 | Jan 13, 2021 |
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.