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
Who owns Aon plc
As filed with the SECHolders of 5% or more
2
Vanguard Capital Management holds 7.32% of Common Stock, as its SCHEDULE 13G filed Apr 29, 2026 says.
Directors and officers
22
report now, of 43 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Vanguard Capital Management
SCHEDULE 13G · filed Apr 29, 2026 · Common Stock
JPMorgan Chase & Co.
SCHEDULE 13G/A · filed Oct 16, 2026 · class A ordinary shares of Aon plc, $0.01 nominal value · 5.6% in Jul 16, 2026
Massachusetts Financial Services Company
SCHEDULE 13G/A · filed May 14, 2025 · Class A Ordinary Shares · reported falling below 5%
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%
What AON reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
NFP Intermediate Holdings A Corp.
A company bought · acquisition · Jun 2025 · owns, named in the 10-K filed Feb 13, 2026
864 subsidiaries in 81 countries, from the list filed with the 10-K filed Feb 13, 2026.
Insider tradesForm 4
11sales
7purchases
8sales on a scheduled plan
1people selling
$7.8Msold, in dollars
$7.8Mbought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window2 of 43 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Zeidel Darren | General Counsel | 11 | $7.8M | 8 | 0 | $0 |
| Knight Lester B | director | 0 | $0 | 0 | 7 | $7.8M |