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 |
|---|---|---|---|
| CERT | Nyse certification | Sep 18, 2026 | — |
| 8-A12B | Filing | Sep 17, 2026 | — |
| 25-NSE | Delisting notice | Feb 17, 2026 | — |
| 25-NSE | Delisting notice | Dec 15, 2025 | — |
| 25-NSE | Delisting notice | Jun 14, 2024 | — |
| EFFECT | Filing | Apr 23, 2024 | — |
| CORRESP | Letter to the SEC | Apr 19, 2024 | — |
| CORRESP | Letter to the SEC | Apr 18, 2024 | — |
| CORRESP | Letter to the SEC | Mar 29, 2024 | — |
| UPLOAD | Letter from the SEC | Mar 22, 2024 | — |
| CERT | Nyse certification | Mar 15, 2024 | — |
| 8-A12B | Filing | Mar 1, 2024 | — |
| 25-NSE | Delisting notice | Nov 27, 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 | — |
| CERT | Nyse certification | Mar 1, 2023 | — |
| 8-A12B | Filing | Feb 28, 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 | — |
| CERT | Nyse certification | Sep 13, 2022 | — |
| 8-A12B | Filing | Sep 12, 2022 | — |
| CERT | Nyse certification | Mar 1, 2022 | — |
| CERT | Nyse certification | Mar 1, 2022 | — |
| 8-A12B | Filing | Feb 28, 2022 | — |
| 8-A12B | Filing | Feb 28, 2022 | — |
| CERT | Nyse certification | Dec 3, 2021 | — |
| 8-A12B | Filing | Dec 2, 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 | — |
| 25-NSE | Delisting notice | Feb 16, 2021 | — |
| UPLOAD | Letter from the SEC | Jun 18, 2020 | — |
| CORRESP | Letter to the SEC | Jun 12, 2020 | — |
| PRER14A | Filing | Jun 12, 2020 | — |
| UPLOAD | Letter from the SEC | Jun 1, 2020 | — |
| 15-12B | Deregistration | Apr 2, 2020 | — |
| 25-NSE | Delisting notice | Apr 1, 2020 | — |
| 8-A12B | Filing | Apr 1, 2020 | — |
| 8-A12B | Filing | Apr 1, 2020 | — |
| 8-A12B | Filing | Apr 1, 2020 | — |
| 8-A12B | Filing | Apr 1, 2020 | — |
| 8-A12B | Filing | Apr 1, 2020 | — |
| 8-A12B | Filing | Apr 1, 2020 | — |
| 8-A12B | Filing | Apr 1, 2020 | — |
| 8-A12B | Filing | Apr 1, 2020 | — |
| 8-K12B | Filing | Apr 1, 2020 | Apr 1, 2020 |
| UPLOAD | Letter from the SEC | Apr 10, 2019 | — |
| PRER14A | Filing | Apr 9, 2019 | — |
| 425 | 8-k | Mar 5, 2019 | — |
| UPLOAD | Letter from the SEC | Oct 5, 2018 | — |
| CORRESP | Letter to the SEC | Aug 30, 2018 | — |
| UPLOAD | Letter from the SEC | Aug 16, 2018 | — |
| 15-15D | Filing | Jun 29, 2018 | — |
| UPLOAD | Letter from the SEC | Apr 6, 2018 | — |
| CORRESP | Letter to the SEC | Mar 29, 2018 | — |
| UPLOAD | Letter from the SEC | Jan 30, 2018 | — |
| CORRESP | Letter to the SEC | Jan 12, 2018 | — |
| UPLOAD | Letter from the SEC | Dec 29, 2017 | — |
| 11-K | Employee savings plan report | Jun 29, 2017 | Dec 31, 2016 |
| 11-K | Employee savings plan report | Jun 27, 2016 | Dec 31, 2015 |
| 8-A12B | Filing | Mar 1, 2016 | — |
| 8-A12B | Filing | Nov 13, 2015 | — |
| 11-K | Employee savings plan report | Jun 26, 2015 | Dec 31, 2014 |
| CERTNYS | Auto-generated paper document | May 20, 2015 | — |
| 8-A12B | Filing | May 20, 2015 | — |
Showing 80 filings. 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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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.