As of April 22, 2026, the three largest insider holders of AON are Gregory C Case (President Ceo, 933.71K shares), Eric Andersen (President, 177.03K shares), Gregory C Case (President Ceo, 175.17K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Gregory C Case | President Ceo | 933,709 | 0 | 19 Feb, 2026 |
| Eric Andersen | President | 177,033 | 0 | 18 Feb, 2025 |
| Gregory C Case | President Ceo | 0 | 175,169 | 20 Feb, 2026 |
| Lester B Knight | - | 0 | 143,000 | 12 Feb, 2026 |
| Andy Weitz | Chief Marketing Officer | 41,524 | 0 | 20 Feb, 2024 |
| Gloria Santona | - | 21,872 | 17,736 | 14 Nov, 2025 |
| Fulvio Conti | - | 30,862 | 0 | 24 Jun, 2024 |
| Richard C Notebaert | - | 29,176 | 0 | 30 Jun, 2025 |
| Carolyn Y Woo | - | 27,278 | 0 | 20 Jun, 2023 |
| Lisa Stevens | Chief Administrative Officer | 26,321 | 0 | 19 Feb, 2026 |
| Lester B Knight | - | 0 | 26,033 | 09 Dec, 2025 |
| Darren Zeidel | General Counsel | 15,954 | 0 | 02 Mar, 2026 |
| Andy Marcell | Global Ceo, Solution Lines | 8,820 | 0 | 17 Mar, 2026 |
| Michael Neller | Principal Accounting Officer | 8,209 | 0 | 25 Mar, 2025 |
| Jin-Yong Cai | - | 7,465 | 0 | 30 Jun, 2025 |
| Lori Goltermann | Ceo, Regions North America | 6,795 | 0 | 17 Mar, 2026 |
| Mindy F. Simon | Chief Operating Officer | 6,496 | 0 | 17 Feb, 2026 |
| Byron Spruell | - | 5,787 | 0 | 30 Jun, 2025 |
| James Platt | Chief Operating Officer | 4,590 | 0 | 17 Mar, 2022 |
| Anne Corona | Chief Commercial Officer | 4,195 | 0 | 17 Mar, 2026 |
| Lester B Knight | - | 3,739 | 0 | 30 Jun, 2025 |
| Michael Neller | Principal Accounting Officer | 0 | 2,636 | 09 Aug, 2022 |
| Edmund Reese | Chief Financial Officer | 2,124 | 0 | 17 Feb, 2026 |
| Adriana Karaboutis | - | 2,016 | 0 | 30 Jun, 2025 |
| Jillian Slyfield | Chief Innovation Officer | 1,910 | 0 | 19 Sep, 2024 |
| Sarah G Smith | - | 1,524 | 0 | 30 Jun, 2025 |
| Jose Antonio Alvarez | - | 867 | 0 | 30 Jun, 2025 |
| James G. Stavridis | - | 788 | 0 | 30 Jun, 2025 |
| James G. Stavridis | - | 304 | 0 | 17 Sep, 2024 |
| Jo Ann Jenkins | - | 284 | 0 | 30 Sep, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 13 Mar, 2026 | Anne Corona | Class A Ordinary Stock | A | 193 | - | 4,183 | D | M |
| 13 Mar, 2026 | Lori Goltermann | Class A Ordinary Stock | A | 228 | - | 6,731 | D | M |
| 13 Mar, 2026 | Andy Marcell | Class A Ordinary Stock | A | 1,166 | - | 9,149 | D | M |
| 13 Mar, 2026 | Andy Marcell | Class A Ordinary Stock | D | 568 | $321.41 | 8,582 | D | F |
| 13 Mar, 2026 | Lori Goltermann | Class A Ordinary Stock | D | 99 | $321.41 | 6,632 | D | F |
| 13 Mar, 2026 | Anne Corona | Class A Ordinary Stock | D | 85 | $321.41 | 4,098 | D | F |
| 13 Mar, 2026 | Anne Corona | Class A Ordinary Stock | A | 174 | - | 4,272 | D | M |
| 13 Mar, 2026 | Andy Marcell | Class A Ordinary Stock | A | 464 | - | 9,046 | D | M |
| 13 Mar, 2026 | Lori Goltermann | Class A Ordinary Stock | A | 290 | - | 6,922 | D | M |
| 13 Mar, 2026 | Lori Goltermann | Class A Ordinary Stock | D | 126 | $321.41 | 6,795 | D | F |
| 13 Mar, 2026 | Anne Corona | Class A Ordinary Stock | D | 77 | $321.41 | 4,195 | D | F |
| 13 Mar, 2026 | Andy Marcell | Class A Ordinary Stock | D | 226 | $321.41 | 8,820 | D | F |
| 13 Mar, 2026 | Andy Marcell | Restricted Share Unit (Right to Receive) | D | 1,166 | $0.00 | 0 | D | M |
| 13 Mar, 2026 | Anne Corona | Restricted Share Unit (Right to Receive) | D | 193 | $0.00 | 0 | D | M |
| 13 Mar, 2026 | Lori Goltermann | Restricted Share Unit (Right to Receive) | D | 228 | $0.00 | 0 | D | M |
| 13 Mar, 2026 | Anne Corona | Restricted Share Unit (Right to Receive) | D | 174 | $0.00 | 348 | D | M |
| 13 Mar, 2026 | Andy Marcell | Restricted Share Unit (Right to Receive) | D | 464 | $0.00 | 928 | D | M |
| 13 Mar, 2026 | Lori Goltermann | Restricted Share Unit (Right to Receive) | D | 290 | $0.00 | 580 | D | M |
| 26 Feb, 2026 | Darren Zeidel | Class A Ordinary Stock | D | 4,300 | $329.72 | 15,954 | D | S |
| 19 Feb, 2026 | Gregory C Case | Class A Ordinary Stock | D | 7,500 | $0.00 | 29,912 | I | G |