Company Analysis

Aon plc (AON)

NYSE: AON · Insurance Agents, Brokers & Service · Dublin 2, IE · filing with the SEC since 1995
Grade6.3
◀ Past 6.9● Present 6.3▶ Future 5.8

Filings

378 filings since 2017 beside 481 insider forms · Large accelerated filer · read from EDGAR on Nov 13, 2026
Due nextLarge accelerated filer
10-K Annual report for the fiscal year ending Dec 31, 2026Large accelerated filers have 60 days after the fiscal year ends. by Mar 1, 2027
10-Q Quarterly report for the quarter ending Mar 31, 2027Large accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end. by May 10, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 28 days after the quarter ended. The proxy statement was last filed Apr 28, 2026.

Filings a yearinsider forms included
851077789931126172
20192020202120222023202420252026

2026 counts to Nov 13, 2026.

Officer or director change (8-K item 5.02): 17 times in the last 36 months, the newest Aug 17, 2026.SEC letters: 4 in the last 36 months, the newest Apr 19, 2024.
Insider forms 481

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Oct 28, 2026 10-Q Quarterly report Sep 30, 2026
Oct 28, 2026 8-K items 2.02, 9.01 Results released · Current report
Oct 16, 2026 SCHEDULE 13G/A Large holder update, amended
Sep 22, 2026 8-K items 1.01, 1.02, 2.03, 9.01 Major agreement signed; Major agreement ended; New debt or obligation taken on · Current report Sep 18, 2026
Sep 18, 2026 CERT Exchange listing certification
Sep 17, 2026 8-A12B Class of securities registered for listing
Sep 17, 2026 8-K items 8.01, 9.01 Other event · Current report Sep 14, 2026
Sep 15, 2026 424B5 Shelf offering
Sep 14, 2026 FWP Offering communication
Sep 11, 2026 424B5 Shelf offering
Sep 11, 2026 8-K items 8.01, 9.01 Other event · Current report
Aug 31, 2026 8-K items 1.01, 7.01, 9.01 Major agreement signed; Investor disclosure (Regulation FD) · Current report Aug 30, 2026
Aug 17, 2026 8-K items 5.02, 9.01 Officer or director change · Current report
Jul 29, 2026 10-Q Quarterly report Jun 30, 2026
Jul 29, 2026 8-K items 2.02, 9.01 Results released · Current report
Jul 16, 2026 SCHEDULE 13G Large holder notice
Jul 2, 2026 S-3ASR Shelf registration
Jul 1, 2026 8-K items 5.02, 5.07, 8.01, 9.01 Officer or director change; Shareholder vote; Other event · Current report Jun 26, 2026
May 1, 2026 10-Q Quarterly report Mar 31, 2026
May 1, 2026 8-K items 2.02, 9.01 Results released · Current report
Apr 29, 2026 SCHEDULE 13G Large holder notice
Apr 28, 2026 ARS Annual report to shareholders Dec 31, 2025
Apr 28, 2026 DEFA14A Extra proxy material
Apr 28, 2026 DEF 14A Proxy statement Jun 26, 2026
Mar 26, 2026 SCHEDULE 13G/A Large holder update, amended
Feb 17, 2026 25-NSE Delisting notice from the exchange
Feb 13, 2026 10-K Annual report Dec 31, 2025
Jan 30, 2026 8-K items 2.02, 9.01 Results released · Current report
Jan 7, 2026 8-K items 5.02, 9.01 Officer or director change · Current report Jan 6, 2026
Jan 2, 2026 8-K items 5.02, 9.01 Officer or director change · Current report Dec 31, 2025
Dec 15, 2025 25-NSE Delisting notice from the exchange
Oct 31, 2025 10-Q Quarterly report Sep 30, 2025
Oct 31, 2025 8-K items 2.02, 9.01 Results released · Current report
Oct 30, 2025 8-K item 7.01 Investor disclosure (Regulation FD) · Current report
Sep 3, 2025 8-K items 7.01, 9.01 Investor disclosure (Regulation FD) · Current report
Aug 4, 2025 8-K item 5.02 Officer or director change · Current report Aug 1, 2025
Jul 29, 2025 8-K item 5.02 Officer or director change · Current report
Jul 25, 2025 10-Q Quarterly report Jun 30, 2025
Jul 25, 2025 8-K items 2.02, 9.01 Results released · Current report
Jul 25, 2025 S-8 Employee stock plan registration
40 of 378 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton AON · research, not advice