Updated Jul 16, 2026 · Last SEC filing 2026-07-09
Aon plc (AON) has filed 15 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-09. 2 Form 8-K material event filings were reported by AON in the last 90 days. 2 Form 144 notices of proposed sale were filed for AON stock. InsiderAlpha tracks every AON SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0000315293 |
|---|
| Form 4 filings (90d) | 15 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 2 |
| Latest Form 4 filing | 2026-07-09 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Zeidel Darren | General Counsel | S — Open-market sale | 600 | $360.00 | $216K | SEC | |
| Reese Edmund | Chief Financial Officer | F — Tax withholding / forfeiture | 2.2K | $343.56 | $755K | SEC | |
| Reese Edmund | Chief Financial Officer | M — Option exercise | 4.0K | — | — | SEC | |
| SMITH SARAH G | Insider | F — Tax withholding / forfeiture | 186 | $315.95 | $59K | SEC | |
| SMITH SARAH G | Insider | A — Grant or award | 776 | — | — | SEC | |
| Cai Jin-Yong | Insider | F — Tax withholding / forfeiture | 397 | $315.95 | $125K | SEC | |
| SANTONA GLORIA | Insider | F — Tax withholding / forfeiture | 186 | $315.95 | $59K | SEC | |
| STAVRIDIS JAMES G. | Insider | F — Tax withholding / forfeiture | 186 | $315.95 | $59K | SEC | |
| NOTEBAERT RICHARD C | Insider | F — Tax withholding / forfeiture | 186 | $315.95 | $59K | SEC | |
| SANTONA GLORIA | Insider | A — Grant or award | 776 | — | — | SEC | |
| Spruell Byron | Insider | A — Grant or award | 776 | — | — | SEC | |
| CAMPBELL JEFFREY C | Insider | F — Tax withholding / forfeiture | 186 | $315.95 | $59K | SEC | |
| Spruell Byron | Insider | F — Tax withholding / forfeiture | 186 | $315.95 | $59K | SEC | |
| Cai Jin-Yong | Insider | A — Grant or award | 776 | — | — | SEC | |
| STAVRIDIS JAMES G. | Insider | A — Grant or award | 776 | — | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Aon plc (AON). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Reese Edmund | 3 | $755K |
| NOTEBAERT RICHARD C | 3 | $59K |
| Karaboutis Adriana | 2 | $59K |
| SMITH SARAH G | 2 | $59K |
| Jenkins Jo Ann | 2 | $59K |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in AON insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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