AON — Insider Trading Activity
One insider at AON put personal money into the stock on the open market this window, led by a Director, against 1 insider selling.
What this means for AON
AON is not showing a cluster buy or a step-change versus its own baseline, so what the window amounts to is a single insider acting alone. Who is buying. The most credible buyer in this window is a Director ($5M–$10M), growing their stake by 12%. That insider’s track record: past buys beat the S&P 500 3 of 3 times (avg +8% vs S&P over 6 mo). Overall credibility score: 50/100 (Medium).
By the numbers. One insider filed 6 open-market purchases at AON over the window, 20,000 shares in all at an average of $327.48 a share, most recently on September 2, 2026. On the other side, one insider filed 6 sales covering 3,850 shares at an average of $374.87, the latest on July 28, 2026. That puts the average sale 14% above the average purchase — worth checking against where the stock trades today.
How we read these filings — which transaction codes count, how the cluster and credibility thresholds are set, and what the signals have and haven’t predicted — is written up in the insider trading methodology.
AON insider filings, one by one
All 12 Form 4 filings from the last 90 days, by insider, with share count, dollar amount and date.
Other tickers with the same signal
Companies of a comparable size whose Form 4 filings tripped the same insider buying flag as AON in this window.
- FSBC insider trading — 6 buyers, credibility 72/100
- ENR insider trading — 1 buyer, credibility 29/100
- GWRS insider trading — 2 buyers, credibility 53/100
- HUBS insider trading — 1 buyer, 2 sellers, credibility 26/100
- ECL insider trading — 1 buyer, 3 sellers, credibility 37/100