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AON

Aon plc

FinancialsS&P 500

Aon plc insider trading

Aon plc files with the SEC as a Insurance Agents, Brokers & Service company headquartered in Dublin 2, L2. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.

From SEC filings

Recent AON insider transactions

2 insiders traded AON on the open market between Feb 17, 2026 and Sep 02, 2026 — 6 purchases worth $6.5M, 9 sales worth $4.7M, of which 8 were pre-scheduled under a 10b5-1 plan.

Bought
$6.5M
Sold
$4.7M

8 of 9 on a 10b5-1 plan

Net
+$1.8M
Insiders
2

Open-market purchases (code P) and sales (code S) from Aon plc's own SEC Form 4 filings. Grants and option exercises are excluded — they are compensation, not decisions. Share counts are derived from the reported value and price. Verify any figure against the original filing before acting on it; this is monitoring, not advice.

Filing history last read from EDGAR on Sep 22, 2026. The live dashboard shows new filings the moment they clear.

Every AON Form 4 on SEC.gov

SEC Form 4 data, Q3 2024 to Q2 2026

AON insider trading by quarter

Between Jul 01, 2024 and Jun 30, 2026, 5 insiders traded AON on the open market: 2 purchases worth $1.5M and 9 sales worth $9.3M, 2 of the sales pre-scheduled under a 10b5-1 plan. In the last four quarters alone: 1 purchase ($1.3M) and 4 sales ($6.1M), by 2 insiders.

QuarterBoughtSold
Q2 2026——
Q1 2026+$1.3M1 buy−$3.1M2 sales · 1 on a plan
Q4 2025—−$3M2 sales
Q3 2025——
Q2 2025——
Q1 2025——
Q4 2024—−$750.6K2 sales
Q3 2024+$246.6K1 buy−$2.5M3 sales · 1 on a plan
Largest purchase
+$1.3M of AON by Knight Lester B (Director) on Feb 10, 2026.
Largest sale
−$2.6M of AON by Zeidel Darren (General Counsel) on Nov 05, 2025.

Open-market transactions through Jun 30, 2026most recent first

  • Zeidel Darren

    General Counsel

    −$1.4M

    Feb 26, 2026

    4,300 sh · $329.72

  • Knight Lester B

    Director

    +$1.3M

    Feb 10, 2026

    4,000 sh · $319.24

  • Zeidel Darren

    General Counsel

    −$2.6M

    Nov 05, 2025

    7,570 sh · $344.42

  • Zeidel Darren

    General Counsel

    −$424.6K

    Nov 05, 2025

    1,230 sh · $345.17

  • Simon Mindy F.

    Chief Operating Officer

    −$256.3K

    Nov 27, 2024

    650 sh · $394.34

  • Stevens Lisa

    Chief Administrative Officer

    −$494.3K

    Nov 26, 2024

    1,275 sh · $387.68

  • Spruell Byron

    Director

    +$246.6K

    Aug 28, 2024

    725 sh · $340.08

  • Zeidel Darren

    General Counsel

    −$312.7K

    Aug 12, 2024

    950 sh · $329.15

  • Stevens Lisa

    Chief Administrative Officer

    −$131.6K

    Aug 12, 2024

    400 sh · $328.95

  • Zeidel Darren10b5-1

    General Counsel

    −$2M

    Jul 26, 2024

    6,597 sh · $310.00

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

Aon plc company record

SEC industry classification
Insurance Agents, Brokers & Service
Headquarters
Dublin 2, L2
Incorporated in
L2
Listed on
NYSE
SEC Central Index Key
0000315293
Previously filed as
AON CORP

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Financials sector shown above.

After insiders bought AON

What the stock actually did in the 90 days following each open-market purchase

Don't check AON — let it ping you

Get told the moment an insider moves on AON

Pro watches Aon plc for you and sends a Telegram ping within moments of a Form 4 clearing EDGAR — a C-suite open-market buy, a cluster, a 10b5-1 regime break — long before it reaches the press. Add AON to a watchlist, see each mover's benchmark-measured track record and which legendary funds hold it, and read the full filing history instead of the last 72 hours.

Track AON on the live dashboardFilings on SEC.gov

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

How to read AON insider activity

Open-market purchase (code P)
An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
Grants and option exercises (codes A, M)
Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
Cluster buy
Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

Other Financials tickers

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This week on the tape: who actually chose to sellThe weekly split of scheduled 10b5-1 selling vs deliberate sales, with the deciders named.

Questions

Are AON insiders buying or selling?
Between Feb 17, 2026 and Sep 02, 2026, 2 Aon plc insiders made 6 open-market purchases worth $6.5M and 9 sales worth $4.7M, a net purchase of $1.8M. 8 of the sales were pre-scheduled under a Rule 10b5-1 plan.
How much AON stock have insiders bought and sold in the last two years?
Between Jul 01, 2024 and Jun 30, 2026, 5 Aon plc insiders made 2 open-market purchases worth $1.5M and 9 sales worth $9.3M. 2 of the sales were pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: 1 purchase ($1.3M) and 4 sales ($6.1M). The largest purchase was Knight Lester B buying $1.3M on Feb 10, 2026. The largest sale was Zeidel Darren selling $2.6M on Nov 05, 2025.
What was the largest recent AON insider trade?
Knight Lester B (Director) bought $2.4M of AON stock on Sep 02, 2026 at about $327.52 a share.
When did an insider last buy AON shares?
The most recent open-market purchase on file is Knight Lester B (Director) buying $566.3K on Sep 02, 2026. The largest purchase in the period was $2.4M by Knight Lester B.
Where does AON insider trading data come from?
From the Form 4 filings Aon plc's officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.

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