SEC Form 4 · Updated Daily
AON
— AON PUBLIC LIMITED COMPANY OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Case Gregory C | Director · Officer | 175,169 | 2026-02-19 | G |
| KNIGHT LESTER B | Director | 163,000 | 2026-09-02 | P |
| FRANCIS CHERYL A | Director | 29,293.735 | 2026-06-25 | F |
| NOTEBAERT RICHARD C | Director | 28,327.735 | 2026-06-25 | F |
| Stevens Lisa | Officer | 26,321.491 | 2026-02-18 | G |
| SANTONA GLORIA | Director | 22,461.735 | 2026-06-25 | F |
| CAMPBELL JEFFREY C | Director | 12,620.735 | 2026-06-25 | F |
| Zeidel Darren | Officer | 11,504.099 | 2026-07-28 | S |
| Marcell Andy | Officer | 8,819.57 | 2026-03-13 | F |
| Cai Jin-Yong | Director | 7,844.852 | 2026-06-25 | F |
| Goltermann Lori | Officer | 6,795.447 | 2026-03-13 | F |
| Simon Mindy F. | Officer | 6,496.485 | 2026-02-13 | F |
| Spruell Byron | Director | 6,376.735 | 2026-06-25 | F |
| Corona Anne | Officer | 4,194.791 | 2026-03-13 | F |
| Reese Edmund | Officer | 3,900.969 | 2026-07-01 | F |
| Karaboutis Adriana | Director | 2,605.735 | 2026-06-25 | F |
| SMITH SARAH G | Director | 2,113.735 | 2026-06-25 | F |
| STAVRIDIS JAMES G. | Director | 1,377.419 | 2026-06-25 | F |
| Alvarez Jose Antonio | Director | 1,270.391 | 2026-06-25 | F |
| Jenkins Jo Ann | Director | 874.212 | 2026-06-25 | F |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-02 | KNIGHT LESTER B | Open-market buy | 367 | $330.51 | 163,000 |
| 2026-09-02 | KNIGHT LESTER B | Open-market buy | 1,440 | $329.69 | 162,633 |
| 2026-09-02 | KNIGHT LESTER B | Open-market buy | 4,145 | $328.34 | 161,193 |
| 2026-09-02 | KNIGHT LESTER B | Open-market buy | 7,212 | $327.52 | 157,048 |
| 2026-09-02 | KNIGHT LESTER B | Open-market buy | 5,097 | $326.53 | 149,836 |
| 2026-09-02 | KNIGHT LESTER B | Open-market buy | 1,739 | $325.63 | 144,739 |
| 2026-07-28 | Zeidel Darren | Open-market sale | 475 | $380.00 | 11,504.099 |
| 2026-07-28 | Zeidel Darren | Open-market sale | 725 | $378.00 | 11,979.099 |
| 2026-07-28 | Zeidel Darren | Open-market sale | 700 | $376.00 | 12,704.099 |
| 2026-07-17 | Zeidel Darren | Open-market sale | 675 | $374.00 | 13,404.099 |
| 2026-07-17 | Zeidel Darren | Open-market sale | 650 | $372.00 | 14,079.099 |
| 2026-07-17 | Zeidel Darren | Open-market sale | 625 | $370.00 | 14,729.099 |
| 2026-07-07 | Zeidel Darren | Open-market sale | 600 | $360.00 | 15,354.099 |
| 2026-07-01 | Reese Edmund | Option exercise (derivative) | 3,975 | $0.00 | 3,975 |
| 2026-07-01 | Reese Edmund | Tax withholding | 2,198.112 | $343.56 | 3,900.969 |
| 2026-07-01 | Reese Edmund | Option exercise | 3,975 | — | 6,099.081 |
| 2026-06-25 | Karaboutis Adriana | Tax withholding | 186.235 | $315.95 | 2,605.735 |
| 2026-06-25 | Karaboutis Adriana | Grant / award | 776 | — | 2,791.97 |
| 2026-06-25 | Jenkins Jo Ann | Tax withholding | 186.235 | $315.95 | 874.212 |
| 2026-06-25 | Jenkins Jo Ann | Grant / award | 776 | — | 1,060.447 |
| 2026-06-25 | SMITH SARAH G | Tax withholding | 186.235 | $315.95 | 2,113.735 |
| 2026-06-25 | SMITH SARAH G | Grant / award | 776 | — | 2,299.97 |
| 2026-06-25 | Cai Jin-Yong | Tax withholding | 396.524 | $315.95 | 7,844.852 |
| 2026-06-25 | Cai Jin-Yong | Grant / award | 776 | — | 8,241.376 |
| 2026-06-25 | Spruell Byron | Tax withholding | 186.235 | $315.95 | 6,376.735 |
| 2026-06-25 | Spruell Byron | Grant / award | 776 | — | 6,562.97 |
| 2026-06-25 | CAMPBELL JEFFREY C | Tax withholding | 186.235 | $315.95 | 12,620.735 |
| 2026-06-25 | CAMPBELL JEFFREY C | Grant / award | 776 | — | 12,806.97 |
| 2026-06-25 | SANTONA GLORIA | Tax withholding | 186.235 | $315.95 | 22,461.735 |
| 2026-06-25 | SANTONA GLORIA | Grant / award | 776 | — | 22,647.97 |
| 2026-06-25 | NOTEBAERT RICHARD C | Tax withholding | 186.235 | $315.95 | 28,327.735 |
| 2026-06-25 | NOTEBAERT RICHARD C | Grant / award | 776 | — | 28,513.97 |
| 2026-06-25 | STAVRIDIS JAMES G. | Tax withholding | 186.235 | $315.95 | 1,377.419 |
| 2026-06-25 | STAVRIDIS JAMES G. | Grant / award | 776 | — | 1,563.654 |
| 2026-06-25 | FRANCIS CHERYL A | Tax withholding | 186.235 | $315.95 | 29,293.735 |
| 2026-06-25 | FRANCIS CHERYL A | Grant / award | 776 | — | 29,479.97 |
| 2026-06-25 | Alvarez Jose Antonio | Tax withholding | 372.469 | $315.95 | 1,270.391 |
| 2026-06-25 | Alvarez Jose Antonio | Grant / award | 776 | — | 1,642.86 |
| 2026-06-25 | KNIGHT LESTER B | Grant / award | 1,488 | — | 5,227 |
| 2026-05-12 | NOTEBAERT RICHARD C | Gift | 1,438 | $0.00 | 27,737.97 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.