AON
Aon PLC
NYSE: AON · FINANCIAL SERVICES · INSURANCE BROKERS
$315.72
+4.37% today
Updated 2026-10-28
Market cap
$61.46B
P/E ratio
15.97
P/S ratio
3.50x
EPS (TTM)
$18.14
Dividend yield
1.04%
52W range
$266 – $381
Volume
1.8M
Aon PLC (AON) Insider transactions
Net insider activity
Net buying (48,366 shares)
Buy transactions
44
Sell transactions
56
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-09-02 | KNIGHT, LESTER B | Director | Buy | 7,212 | $327.52 | $2.36M |
| 2026-09-02 | KNIGHT, LESTER B | Director | Buy | 5,097 | $326.53 | $1.66M |
| 2026-09-02 | KNIGHT, LESTER B | Director | Buy | 4,145 | $328.34 | $1.36M |
| 2026-09-02 | KNIGHT, LESTER B | Director | Buy | 1,739 | $325.63 | $566270.57 |
| 2026-09-02 | KNIGHT, LESTER B | Director | Buy | 1,440 | $329.69 | $474753.60 |
| 2026-09-02 | KNIGHT, LESTER B | Director | Buy | 367 | $330.51 | $121297.17 |
| 2026-07-28 | ZEIDEL, DARREN | General Counsel | Sale | 725 | $378.00 | $274050.00 |
| 2026-07-28 | ZEIDEL, DARREN | General Counsel | Sale | 700 | $376.00 | $263200.00 |
| 2026-07-28 | ZEIDEL, DARREN | General Counsel | Sale | 475 | $380.00 | $180500.00 |
| 2026-07-17 | ZEIDEL, DARREN | General Counsel | Sale | 675 | $374.00 | $252450.00 |
| 2026-07-17 | ZEIDEL, DARREN | General Counsel | Sale | 650 | $372.00 | $241800.00 |
| 2026-07-17 | ZEIDEL, DARREN | General Counsel | Sale | 625 | $370.00 | $231250.00 |
| 2026-07-07 | ZEIDEL, DARREN | General Counsel | Sale | 600 | $360.00 | $216000.00 |
| 2026-07-01 | REESE, EDMUND | Chief Financial Officer | Sale | 3,975 | — | — |
| 2026-07-01 | REESE, EDMUND | Chief Financial Officer | Buy | 3,975 | — | — |
| 2026-07-01 | REESE, EDMUND | Chief Financial Officer | Sale | 2,198 | $343.56 | $755144.88 |
| 2026-06-25 | STAVRIDIS, JAMES G. | Director | Buy | 776 | — | — |
| 2026-06-25 | STAVRIDIS, JAMES G. | Director | Sale | 186 | $315.95 | $58766.70 |
| 2026-06-25 | SPRUELL, BYRON | Director | Buy | 776 | — | — |
| 2026-06-25 | SPRUELL, BYRON | Director | Sale | 186 | $315.95 | $58766.70 |
| 2026-06-25 | SMITH, SARAH G | Director | Buy | 776 | — | — |
| 2026-06-25 | SMITH, SARAH G | Director | Sale | 186 | $315.95 | $58766.70 |
| 2026-06-25 | SANTONA, GLORIA | Director | Buy | 776 | — | — |
| 2026-06-25 | SANTONA, GLORIA | Director | Sale | 186 | $315.95 | $58766.70 |
| 2026-06-25 | NOTEBAERT, RICHARD C | Director | Buy | 776 | — | — |
| 2026-06-25 | NOTEBAERT, RICHARD C | Director | Sale | 186 | $315.95 | $58766.70 |
| 2026-06-25 | KNIGHT, LESTER B | Director | Buy | 1,488 | — | — |
| 2026-06-25 | KARABOUTIS, ADRIANA | Director | Buy | 776 | — | — |
| 2026-06-25 | KARABOUTIS, ADRIANA | Director | Sale | 186 | $315.95 | $58766.70 |
| 2026-06-25 | JENKINS, JO ANN | Director | Buy | 776 | — | — |
| 2026-06-25 | JENKINS, JO ANN | Director | Sale | 186 | $315.95 | $58766.70 |
| 2026-06-25 | FRANCIS, CHERYL A | Director | Buy | 776 | — | — |
| 2026-06-25 | FRANCIS, CHERYL A | Director | Sale | 186 | $315.95 | $58766.70 |
| 2026-06-25 | CAMPBELL, JEFFREY C | Director | Buy | 776 | — | — |
| 2026-06-25 | CAMPBELL, JEFFREY C | Director | Sale | 186 | $315.95 | $58766.70 |
| 2026-06-25 | CAI, JIN-YONG | Director | Buy | 776 | — | — |
| 2026-06-25 | CAI, JIN-YONG | Director | Sale | 397 | $315.95 | $125432.15 |
| 2026-06-25 | ALVAREZ, JOSE ANTONIO | Director | Buy | 776 | — | — |
| 2026-06-25 | ALVAREZ, JOSE ANTONIO | Director | Sale | 372 | $315.95 | $117533.40 |
| 2026-05-12 | NOTEBAERT, RICHARD C | Director | Sale | 1,438 | — | — |
| 2026-03-13 | MARCELL, ANDY | Global CEO, Solution Lines | Sale | 1,166 | — | — |
| 2026-03-13 | MARCELL, ANDY | Global CEO, Solution Lines | Sale | 464 | — | — |
| 2026-03-13 | MARCELL, ANDY | Global CEO, Solution Lines | Buy | 1,166 | — | — |
| 2026-03-13 | MARCELL, ANDY | Global CEO, Solution Lines | Sale | 568 | $321.41 | $182560.88 |
| 2026-03-13 | MARCELL, ANDY | Global CEO, Solution Lines | Buy | 464 | — | — |
| 2026-03-13 | MARCELL, ANDY | Global CEO, Solution Lines | Sale | 226 | $321.41 | $72638.66 |
| 2026-03-13 | GOLTERMANN, LORI | CEO, Regions & North America | Sale | 290 | — | — |
| 2026-03-13 | GOLTERMANN, LORI | CEO, Regions & North America | Sale | 228 | — | — |
| 2026-03-13 | GOLTERMANN, LORI | CEO, Regions & North America | Buy | 290 | — | — |
| 2026-03-13 | GOLTERMANN, LORI | CEO, Regions & North America | Buy | 228 | — | — |
| 2026-03-13 | GOLTERMANN, LORI | CEO, Regions & North America | Sale | 126 | $321.41 | $40497.66 |
| 2026-03-13 | GOLTERMANN, LORI | CEO, Regions & North America | Sale | 99 | $321.41 | $31819.59 |
| 2026-03-13 | CORONA, ANNE | Chief Commercial Officer | Sale | 193 | — | — |
| 2026-03-13 | CORONA, ANNE | Chief Commercial Officer | Sale | 174 | — | — |
| 2026-03-13 | CORONA, ANNE | Chief Commercial Officer | Buy | 193 | — | — |
| 2026-03-13 | CORONA, ANNE | Chief Commercial Officer | Buy | 174 | — | — |
| 2026-03-13 | CORONA, ANNE | Chief Commercial Officer | Sale | 85 | $321.41 | $27319.85 |
| 2026-03-13 | CORONA, ANNE | Chief Commercial Officer | Sale | 77 | $321.41 | $24748.57 |
| 2026-02-26 | ZEIDEL, DARREN | General Counsel | Sale | 4,300 | $329.72 | $1.42M |
| 2026-02-19 | CASE, GREGORY C | Director, President & CEO | Buy | 11,206 | — | — |
| 2026-02-19 | CASE, GREGORY C | Director, President & CEO | Sale | 7,500 | — | — |
| 2026-02-18 | STEVENS, LISA | Chief Administrative Officer | Sale | 32 | — | — |
| 2026-02-17 | ZEIDEL, DARREN | General Counsel | Sale | 5,040 | $325.79 | $1.64M |
| 2026-02-17 | CASE, GREGORY C | Director, President & CEO | Sale | 2,357 | — | — |
| 2026-02-17 | CASE, GREGORY C | Director, President & CEO | Sale | 3,214 | — | — |
| 2026-02-17 | CASE, GREGORY C | Director, President & CEO | Buy | 2,357 | — | — |
| 2026-02-17 | CASE, GREGORY C | Director, President & CEO | Sale | 1,002 | $325.96 | $326611.92 |
| 2026-02-13 | ZEIDEL, DARREN | General Counsel | Sale | 871 | — | — |
| 2026-02-13 | ZEIDEL, DARREN | General Counsel | Sale | 209 | — | — |
| 2026-02-13 | ZEIDEL, DARREN | General Counsel | Buy | 871 | — | — |
| 2026-02-13 | ZEIDEL, DARREN | General Counsel | Sale | 386 | $321.70 | $124176.20 |
| 2026-02-13 | ZEIDEL, DARREN | General Counsel | Buy | 209 | — | — |
| 2026-02-13 | ZEIDEL, DARREN | General Counsel | Sale | 93 | $321.70 | $29918.10 |
| 2026-02-13 | STEVENS, LISA | Chief Administrative Officer | Sale | 1,451 | — | — |
| 2026-02-13 | STEVENS, LISA | Chief Administrative Officer | Sale | 478 | — | — |
| 2026-02-13 | STEVENS, LISA | Chief Administrative Officer | Buy | 1,451 | — | — |
| 2026-02-13 | STEVENS, LISA | Chief Administrative Officer | Sale | 701 | $321.70 | $225511.70 |
| 2026-02-13 | STEVENS, LISA | Chief Administrative Officer | Buy | 478 | — | — |
| 2026-02-13 | STEVENS, LISA | Chief Administrative Officer | Sale | 231 | $321.70 | $74312.70 |
| 2026-02-13 | SIMON, MINDY F. | Chief Operating Officer | Sale | 254 | — | — |
| 2026-02-13 | SIMON, MINDY F. | Chief Operating Officer | Buy | 254 | — | — |
| 2026-02-13 | SIMON, MINDY F. | Chief Operating Officer | Sale | 109 | $321.70 | $35065.30 |
| 2026-02-13 | REESE, EDMUND | Chief Financial Officer | Sale | 598 | — | — |
| 2026-02-13 | REESE, EDMUND | Chief Financial Officer | Buy | 598 | — | — |
| 2026-02-13 | REESE, EDMUND | Chief Financial Officer | Sale | 251 | $321.70 | $80746.70 |
| 2026-02-12 | ZEIDEL, DARREN | General Counsel | Buy | 1,113 | — | — |
| 2026-02-12 | ZEIDEL, DARREN | General Counsel | Buy | 7,135 | — | — |
| 2026-02-12 | ZEIDEL, DARREN | General Counsel | Sale | 2,696 | $314.49 | $847865.04 |
| 2026-02-12 | STEVENS, LISA | Chief Administrative Officer | Buy | 2,059 | — | — |
| 2026-02-12 | STEVENS, LISA | Chief Administrative Officer | Buy | 15,856 | — | — |
| 2026-02-12 | STEVENS, LISA | Chief Administrative Officer | Sale | 7,568 | $314.49 | $2.38M |
| 2026-02-12 | SIMON, MINDY F. | Chief Operating Officer | Buy | 1,113 | — | — |
| 2026-02-12 | SIMON, MINDY F. | Chief Operating Officer | Buy | 5,550 | — | — |
| 2026-02-12 | SIMON, MINDY F. | Chief Operating Officer | Sale | 2,378 | $314.49 | $747857.22 |
| 2026-02-12 | REESE, EDMUND | Chief Financial Officer | Buy | 2,337 | — | — |
| 2026-02-12 | MARCELL, ANDY | Global CEO, Solution Lines | Buy | 9,539 | — | — |
| 2026-02-12 | MARCELL, ANDY | Global CEO, Solution Lines | Buy | 2,226 | — | — |
| 2026-02-12 | MARCELL, ANDY | Global CEO, Solution Lines | Buy | 12,882 | — | — |
| 2026-02-12 | MARCELL, ANDY | Global CEO, Solution Lines | Sale | 6,576 | $314.49 | $2.07M |
| 2026-02-12 | GOLTERMANN, LORI | CEO, Regions & North America | Buy | 1,113 | — | — |
Frequently asked questions
Are AON insiders buying or selling?
Over the transactions on record, AON insiders have been net sellers, with about $13.57M in stock sold across 56 sales, against 6 open-market purchases.
Does insider selling at AON mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which AON insiders are selling the most?
Recent selling is concentrated in a few names. ZEIDEL, DARREN accounts for the largest share on record, with about $5.72M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.