Aon plc (AON) Insider Trading
Directors, officers and holders of more than 10% of AON report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 229 transactions on file: 6 with code P, 7 with code S and 37 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 2, 2026 | KNIGHT LESTER B | Director | P Purchase | 1,440 | $329.69 | $474,754 |
| Sep 2, 2026 | KNIGHT LESTER B | Director | P Purchase | 4,145 | $328.34 | $1,360,969 |
| Sep 2, 2026 | KNIGHT LESTER B | Director | P Purchase | 1,739 | $325.63 | $566,271 |
| Sep 2, 2026 | KNIGHT LESTER B | Director | P Purchase | 5,097 | $326.53 | $1,664,323 |
| Sep 2, 2026 | KNIGHT LESTER B | Director | P Purchase | 367 | $330.51 | $121,297 |
| Sep 2, 2026 | KNIGHT LESTER B | Director | P Purchase | 7,212 | $327.52 | $2,362,074 |
| Jul 28, 2026 | Zeidel Darren | General Counsel | S Sale | 475 | $380.00 | $180,500 |
| Jul 28, 2026 | Zeidel Darren | General Counsel | S Sale | 700 | $376.00 | $263,200 |
| Jul 28, 2026 | Zeidel Darren | General Counsel | S Sale | 725 | $378.00 | $274,050 |
| Jul 17, 2026 | Zeidel Darren | General Counsel | S Sale | 650 | $372.00 | $241,800 |
| Jul 17, 2026 | Zeidel Darren | General Counsel | S Sale | 675 | $374.00 | $252,450 |
| Jul 17, 2026 | Zeidel Darren | General Counsel | S Sale | 625 | $370.00 | $231,250 |
| Jul 7, 2026 | Zeidel Darren | General Counsel | S Sale | 600 | $360.00 | $216,000 |
| Jul 1, 2026 | Reese Edmund | Chief Financial Officer | M Exercise | 3,975 | Not measured | Not measured |
| Jul 1, 2026 | Reese Edmund | Chief Financial Officer | F Tax Payment | 2,198 | $343.56 | $755,183 |
| Jul 1, 2026 | Reese Edmund | Chief Financial Officer | M Exercise | 3,975 | Not measured | Not measured |
| Jun 25, 2026 | SANTONA GLORIA | Director | F Tax Payment | 186 | $315.95 | $58,841 |
| Jun 25, 2026 | SMITH SARAH G | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | FRANCIS CHERYL A | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | NOTEBAERT RICHARD C | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | Spruell Byron | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | Alvarez Jose Antonio | Director | F Tax Payment | 372 | $315.95 | $117,682 |
| Jun 25, 2026 | Spruell Byron | Director | F Tax Payment | 186 | $315.95 | $58,841 |
| Jun 25, 2026 | Jenkins Jo Ann | Director | F Tax Payment | 186 | $315.95 | $58,841 |
| Jun 25, 2026 | CAMPBELL JEFFREY C | Director | F Tax Payment | 186 | $315.95 | $58,841 |
| Jun 25, 2026 | CAMPBELL JEFFREY C | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | Cai Jin-Yong | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | Jenkins Jo Ann | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | SMITH SARAH G | Director | F Tax Payment | 186 | $315.95 | $58,841 |
| Jun 25, 2026 | KNIGHT LESTER B | Director | A Award | 1,488 | Not measured | Not measured |
| Jun 25, 2026 | Alvarez Jose Antonio | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | Cai Jin-Yong | Director | F Tax Payment | 397 | $315.95 | $125,282 |
| Jun 25, 2026 | NOTEBAERT RICHARD C | Director | F Tax Payment | 186 | $315.95 | $58,841 |
| Jun 25, 2026 | STAVRIDIS JAMES G. | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | SANTONA GLORIA | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | FRANCIS CHERYL A | Director | F Tax Payment | 186 | $315.95 | $58,841 |
| Jun 25, 2026 | Karaboutis Adriana | Director | F Tax Payment | 186 | $315.95 | $58,841 |
| Jun 25, 2026 | Karaboutis Adriana | Director | A Award | 776 | Not measured | Not measured |
| Jun 25, 2026 | STAVRIDIS JAMES G. | Director | F Tax Payment | 186 | $315.95 | $58,841 |
| May 12, 2026 | NOTEBAERT RICHARD C | Director | G Gift | 1,438 | Not measured | Not measured |
| Mar 13, 2026 | Corona Anne | Chief Commercial Officer | M Exercise | 193 | Not measured | Not measured |
| Mar 13, 2026 | Corona Anne | Chief Commercial Officer | F Tax Payment | 85 | $321.41 | $27,480 |
| Mar 13, 2026 | Corona Anne | Chief Commercial Officer | F Tax Payment | 77 | $321.41 | $24,774 |
| Mar 13, 2026 | Corona Anne | Chief Commercial Officer | M Exercise | 174 | Not measured | Not measured |
| Mar 13, 2026 | Goltermann Lori | CEO, Regions & North America | F Tax Payment | 99 | $321.41 | $31,876 |
| Mar 13, 2026 | Marcell Andy | Global CEO, Solution Lines | F Tax Payment | 226 | $321.41 | $72,626 |
| Mar 13, 2026 | Marcell Andy | Global CEO, Solution Lines | M Exercise | 464 | Not measured | Not measured |
| Mar 13, 2026 | Marcell Andy | Global CEO, Solution Lines | M Exercise | 1,166 | Not measured | Not measured |
| Mar 13, 2026 | Marcell Andy | Global CEO, Solution Lines | F Tax Payment | 568 | $321.41 | $182,505 |
| Mar 13, 2026 | Goltermann Lori | CEO, Regions & North America | M Exercise | 228 | Not measured | Not measured |
The full Form 4 history is on the AON company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.