AON · Insider Trading
Aon plc Class A
Every open-market purchase and sale reported by AON officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-03 | Lester B Knight | Director | Buy | +20,000 | +$6.55M |
| 2026-07-30 | Darren Zeidel | General Counsel | Sell | −1,900 | −$717.75K |
| 2026-07-21 | Darren Zeidel | General Counsel | Sell | −1,950 | −$725.50K |
| 2026-07-09 | Darren Zeidel | General Counsel | Sell | −600 | −$216.00K |
| 2026-07-06 | Edmund Reese | Chief Financial Officer | MIXED | +1,776 | −$755.18K |
| 2026-06-29 | Adriana Karaboutis | Director | MIXED | +589 | −$58.84K |
| 2026-06-29 | Sarah G Smith | Director | MIXED | +589 | −$58.84K |
| 2026-06-29 | Lester B Knight | Director | A | +1,488 | — |
| 2026-06-29 | Jose Antonio Alvarez | Director | MIXED | +403 | −$117.68K |
| 2026-06-29 | Byron Spruell | Director | MIXED | +589 | −$58.84K |
| 2026-06-29 | Cheryl A Francis | Director | MIXED | +589 | −$58.84K |
| 2026-06-29 | Gloria Santona | Director | MIXED | +589 | −$58.84K |
| 2026-06-29 | Jeffrey C Campbell | Director | MIXED | +589 | −$58.84K |
| 2026-06-29 | Richard C Notebaert | Director | MIXED | +589 | −$58.84K |
| 2026-06-29 | Jo Ann Jenkins | Director | MIXED | +589 | −$58.84K |
| 2026-06-29 | James G. Stavridis | Director | MIXED | +589 | −$58.84K |
| 2026-06-29 | Jin-Yong Cai | Director | MIXED | +379 | −$125.28K |
| 2026-05-14 | Richard C Notebaert | Director | G | −1,438 | — |
| 2026-03-17 | Andy Marcell | Global CEO, Solution Lines | MIXED | +836 | −$255.13K |
| 2026-03-17 | Lori Goltermann | CEO, Regions & North America | MIXED | +292 | −$72.42K |
| 2026-03-17 | Anne Corona | Chief Commercial Officer | MIXED | +204 | −$52.25K |
| 2026-03-02 | Darren Zeidel | General Counsel | Sell | −4,300 | −$1.42M |
| 2026-02-20 | Gregory C Case | President & CEO | G | −15,000 | — |
| 2026-02-19 | Darren Zeidel | General Counsel | Sell | −5,040 | −$1.64M |
| 2026-02-19 | Gregory C Case | President & CEO | MIXED | −1,858 | −$326.51K |
| 2026-02-19 | Lisa Stevens | Chief Administrative Officer | G | −32 | — |
| 2026-02-17 | Gregory C Case | President & CEO | MIXED | +42,151 | −$10.79M |
| 2026-02-17 | Anne Corona | Chief Commercial Officer | MIXED | +1,766 | −$441.77K |
| 2026-02-17 | Lori Goltermann | CEO, Regions & North America | MIXED | +4,223 | −$853.32K |
| 2026-02-17 | Andy Marcell | Global CEO, Solution Lines | MIXED | +6,305 | −$2.07M |
| 2026-02-17 | Edmund Reese | Chief Financial Officer | MIXED | +347 | −$80.68K |
| 2026-02-17 | Mindy F. Simon | Chief Operating Officer | MIXED | +3,317 | −$782.90K |
| 2026-02-17 | Lisa Stevens | Chief Administrative Officer | MIXED | +9,284 | −$2.68M |
| 2026-02-17 | Darren Zeidel | General Counsel | MIXED | +5,040 | −$1.00M |
| 2026-02-12 | Lester B Knight | Director | Buy | +4,000 | +$1.28M |
| 2025-12-09 | Lester B Knight | Director | G | −7,878 | — |
| 2025-11-25 | Andy Marcell | Global CEO, Solution Lines | MIXED | +44 | −$14.51K |
| 2025-11-25 | Lori Goltermann | CEO, Regions & North America | MIXED | +87 | −$23.59K |
| 2025-11-25 | Anne Corona | Chief Commercial Officer | MIXED | +66 | −$22.68K |
| 2025-11-18 | Mindy F. Simon | Chief Operating Officer | MIXED | +1,363 | −$212.25K |
| 2025-11-14 | Gloria Santona | Director | G | — | — |
| 2025-11-07 | Darren Zeidel | General Counsel | Sell | −8,800 | −$3.03M |
| 2025-09-30 | Jo Ann Jenkins | Director | MIXED | +284 | −$93.49K |
| 2025-07-03 | Edmund Reese | Chief Financial Officer | MIXED | +1,776 | −$784.57K |
| 2025-06-30 | Jin-Yong Cai | Director | MIXED | +317 | −$112.83K |
| 2025-06-30 | Jeffrey C Campbell | Director | MIXED | +484 | −$54.05K |
| 2025-06-30 | Cheryl A Francis | Director | MIXED | +484 | −$54.05K |
| 2025-06-30 | Adriana Karaboutis | Director | MIXED | +484 | −$54.05K |
| 2025-06-30 | Richard C Notebaert | Director | MIXED | +484 | −$54.05K |
| 2025-06-30 | Gloria Santona | Director | MIXED | +484 | −$54.05K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Gregory C Case | President & CEO | 1,108,878 | $356.69M |
| Eric Andersen | President | 177,033 | $56.95M |
| Lester B Knight | Director | 155,063 | $49.88M |
| Gloria Santona | Director | 40,197 | $12.93M |
| Cheryl A Francis | Director | 29,479 | $9.48M |
| Richard C Notebaert | Director | 28,513 | $9.17M |
| Lisa Stevens | Chief Administrative Officer | 26,321 | $8.47M |
| Jeffrey C Campbell | Director | 12,806 | $4.12M |
| Darren Zeidel | General Counsel | 12,704 | $4.09M |
| Michael Neller | Principal Accounting Officer | 10,869 | $3.50M |
| Andy Marcell | Global CEO, Solution Lines | 8,581 | $2.76M |
| Jin-Yong Cai | Director | 7,844 | $2.52M |
| Lori Goltermann | CEO, Regions & North America | 6,730 | $2.17M |
| Mindy F. Simon | Chief Operating Officer | 6,496 | $2.09M |
| Byron Spruell | Director | 6,376 | $2.05M |
| James G. Stavridis | Director | 5,185 | $1.67M |
| Anne Corona | Chief Commercial Officer | 4,271 | $1.37M |
| Edmund Reese | Chief Financial Officer | 3,900 | $1.25M |
| Adriana Karaboutis | Director | 2,605 | $838.19K |
| Sarah G Smith | Director | 2,312 | $744.01K |
| Jose Antonio Alvarez | Director | 1,642 | $528.46K |
| Jo Ann Jenkins | Director | 874 | $281.21K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the AON quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.