Aon plc (AON) — insider trading
Financials · NYSE
Aon plc (AON) has 40 reported SEC Form 4 insider transactions in our data, including 6 open-market purchases and 7 open-market sales among the most recent 40 (latest 2026-09-02).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-02 | KNIGHT LESTER B | Director | Open-market purchase | 367 | $330.51 | $121.3K | Form 4 |
| 2026-09-02 | KNIGHT LESTER B | Director | Open-market purchase | 1,440 | $329.69 | $474.8K | Form 4 |
| 2026-09-02 | KNIGHT LESTER B | Director | Open-market purchase | 4,145 | $328.34 | $1.36M | Form 4 |
| 2026-09-02 | KNIGHT LESTER B | Director | Open-market purchase | 7,212 | $327.52 | $2.36M | Form 4 |
| 2026-09-02 | KNIGHT LESTER B | Director | Open-market purchase | 5,097 | $326.53 | $1.66M | Form 4 |
| 2026-09-02 | KNIGHT LESTER B | Director | Open-market purchase | 1,739 | $325.63 | $566.3K | Form 4 |
| 2026-07-28 | Zeidel Darren | Officer (General Counsel) | Open-market sale | 475 | $380.00 | $180.5K | Form 4 |
| 2026-07-28 | Zeidel Darren | Officer (General Counsel) | Open-market sale | 725 | $378.00 | $274.1K | Form 4 |
| 2026-07-28 | Zeidel Darren | Officer (General Counsel) | Open-market sale | 700 | $376.00 | $263.2K | Form 4 |
| 2026-07-17 | Zeidel Darren | Officer (General Counsel) | Open-market sale | 675 | $374.00 | $252.4K | Form 4 |
| 2026-07-17 | Zeidel Darren | Officer (General Counsel) | Open-market sale | 650 | $372.00 | $241.8K | Form 4 |
| 2026-07-17 | Zeidel Darren | Officer (General Counsel) | Open-market sale | 625 | $370.00 | $231.3K | Form 4 |
| 2026-07-07 | Zeidel Darren | Officer (General Counsel) | Open-market sale | 600 | $360.00 | $216.0K | Form 4 |
| 2026-07-01 | Reese Edmund | Officer (Chief Financial Officer) | Option exercise / conversion (derivative) | 3,975 | — | $0 | Form 4 |
| 2026-07-01 | Reese Edmund | Officer (Chief Financial Officer) | Shares withheld for taxes / exercise cost | 2,198 | $343.56 | $755.2K | Form 4 |
| 2026-07-01 | Reese Edmund | Officer (Chief Financial Officer) | Option exercise / conversion | 3,975 | — | — | Form 4 |
| 2026-06-25 | Karaboutis Adriana | Director | Shares withheld for taxes / exercise cost | 186 | $315.95 | $58.8K | Form 4 |
| 2026-06-25 | Karaboutis Adriana | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | Jenkins Jo Ann | Director | Shares withheld for taxes / exercise cost | 186 | $315.95 | $58.8K | Form 4 |
| 2026-06-25 | Jenkins Jo Ann | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | SMITH SARAH G | Director | Shares withheld for taxes / exercise cost | 186 | $315.95 | $58.8K | Form 4 |
| 2026-06-25 | SMITH SARAH G | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | Cai Jin-Yong | Director | Shares withheld for taxes / exercise cost | 397 | $315.95 | $125.3K | Form 4 |
| 2026-06-25 | Cai Jin-Yong | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | Spruell Byron | Director | Shares withheld for taxes / exercise cost | 186 | $315.95 | $58.8K | Form 4 |
| 2026-06-25 | Spruell Byron | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | CAMPBELL JEFFREY C | Director | Shares withheld for taxes / exercise cost | 186 | $315.95 | $58.8K | Form 4 |
| 2026-06-25 | CAMPBELL JEFFREY C | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | SANTONA GLORIA | Director | Shares withheld for taxes / exercise cost | 186 | $315.95 | $58.8K | Form 4 |
| 2026-06-25 | SANTONA GLORIA | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | NOTEBAERT RICHARD C | Director | Shares withheld for taxes / exercise cost | 186 | $315.95 | $58.8K | Form 4 |
| 2026-06-25 | NOTEBAERT RICHARD C | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | STAVRIDIS JAMES G. | Director | Shares withheld for taxes / exercise cost | 186 | $315.95 | $58.8K | Form 4 |
| 2026-06-25 | STAVRIDIS JAMES G. | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | FRANCIS CHERYL A | Director | Shares withheld for taxes / exercise cost | 186 | $315.95 | $58.8K | Form 4 |
| 2026-06-25 | FRANCIS CHERYL A | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | Alvarez Jose Antonio | Director | Shares withheld for taxes / exercise cost | 372 | $315.95 | $117.7K | Form 4 |
| 2026-06-25 | Alvarez Jose Antonio | Director | Grant / award / vesting | 776 | — | — | Form 4 |
| 2026-06-25 | KNIGHT LESTER B | Director | Grant / award / vesting | 1,488 | — | — | Form 4 |
| 2026-05-12 | NOTEBAERT RICHARD C | Director | Bona fide gift | 1,438 | — | $0 | Form 4 |
Ask the chat about AON's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: Aon plc (AON).
Last updated 2026-09-02 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.