AON insider transaction filings
Aon plc — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-03. Screen AON transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 17 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 6 legs across 1 filing by 1 insider — 20,000 shares, $6,549,688 total (shares × price as filed).
- Open-market sales (code S, non-derivative): 7 legs across 3 filings by 1 insider — 4,450 shares, $1,659,250 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 26.
- Largest priced transaction: purchase of 7,212 shares @ $327.52 ($2,362,074) by KNIGHT LESTER B, filed 2026-09-03.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| KNIGHT LESTER B — Director | 2 | 6 legs · 20,000 sh · $6,549,688 | — | 1 |
| Zeidel Darren — General Counsel | 3 | — | 7 legs · 4,450 sh · $1,659,250 | — |
| Reese Edmund — Chief Financial Officer | 1 | — | — | 3 |
| Alvarez Jose Antonio — Director | 1 | — | — | 2 |
| CAMPBELL JEFFREY C — Director | 1 | — | — | 2 |
| Cai Jin-Yong — Director | 1 | — | — | 2 |
| FRANCIS CHERYL A — Director | 1 | — | — | 2 |
| Jenkins Jo Ann — Director | 1 | — | — | 2 |
| Karaboutis Adriana — Director | 1 | — | — | 2 |
| NOTEBAERT RICHARD C — Director | 1 | — | — | 2 |
+4 more insiders in the window, not shown — every filing appears in the table below.
Recent Form 4 filings — Aon plc
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-03 | 4 | KNIGHT LESTER B — Director | Purchase (P): 1,739 @ $325.63 · Purchase (P): 5,097 @ $326.53 · Purchase (P): 7,212 @ $327.52 · Purchase (P): 4,145 @ $328.34 · Purchase (P): 1,440 @ $329.69 · Purchase (P): 367 @ $330.51 | EDGAR |
| 2026-07-30 | 4 | Zeidel Darren — General Counsel | Sale (S): 700 @ $376 · Sale (S): 725 @ $378 · Sale (S): 475 @ $380 | EDGAR |
| 2026-07-21 | 4 | Zeidel Darren — General Counsel | Sale (S): 625 @ $370 · Sale (S): 650 @ $372 · Sale (S): 675 @ $374 | EDGAR |
| 2026-07-09 | 4 | Zeidel Darren — General Counsel | Sale (S): 600 @ $360 | EDGAR |
| 2026-07-06 | 4 | Reese Edmund — Chief Financial Officer | Option exercise (M): 3,975 · Tax withholding (F): 2,198.11 @ $343.56 · Option exercise (M): 3,975 (derivative) @ $0 | EDGAR |
| 2026-06-29 | 4 | Spruell Byron — Director | Grant/award (A): 776 · Tax withholding (F): 186.24 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | Jenkins Jo Ann — Director | Grant/award (A): 776 · Tax withholding (F): 186.24 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | Cai Jin-Yong — Director | Grant/award (A): 776 · Tax withholding (F): 396.52 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | STAVRIDIS JAMES G. — Director | Grant/award (A): 776 · Tax withholding (F): 186.24 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | Karaboutis Adriana — Director | Grant/award (A): 776 · Tax withholding (F): 186.24 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | Alvarez Jose Antonio — Director | Grant/award (A): 776 · Tax withholding (F): 372.47 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | FRANCIS CHERYL A — Director | Grant/award (A): 776 · Tax withholding (F): 186.24 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | CAMPBELL JEFFREY C — Director | Grant/award (A): 776 · Tax withholding (F): 186.24 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | SANTONA GLORIA — Director | Grant/award (A): 776 · Tax withholding (F): 186.24 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | NOTEBAERT RICHARD C — Director | Grant/award (A): 776 · Tax withholding (F): 186.24 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | SMITH SARAH G — Director | Grant/award (A): 776 · Tax withholding (F): 186.24 @ $315.95 | EDGAR |
| 2026-06-29 | 4 | KNIGHT LESTER B — Director | Grant/award (A): 1,488 | EDGAR |
| 2026-05-14 | 4 | NOTEBAERT RICHARD C — Director | Gift (G): 1,438 @ $0 | EDGAR |
| 2026-03-17 | 4 | Marcell Andy — Global CEO, Solution Lines | Option exercise (M): 1,166 · Tax withholding (F): 567.83 @ $321.41 · Option exercise (M): 464 · Tax withholding (F): 225.96 @ $321.41 · Option exercise (M): 1,166 (derivative) @ $0 · Option exercise (M): 464 (derivative) @ $0 | EDGAR |
| 2026-03-17 | 4 | Goltermann Lori — CEO, Regions & North America | Option exercise (M): 228 · Tax withholding (F): 99.18 @ $321.41 · Option exercise (M): 290 · Tax withholding (F): 126.15 @ $321.41 · Option exercise (M): 228 (derivative) @ $0 · Option exercise (M): 290 (derivative) @ $0 | EDGAR |
| 2026-03-17 | 4 | Corona Anne — Chief Commercial Officer | Option exercise (M): 193 · Tax withholding (F): 85.50 @ $321.41 · Option exercise (M): 174 · Tax withholding (F): 77.08 @ $321.41 · Option exercise (M): 193 (derivative) @ $0 · Option exercise (M): 174 (derivative) @ $0 | EDGAR |
| 2026-03-02 | 4 | Zeidel Darren — General Counsel | Sale (S): 4,300 @ $329.72 | EDGAR |
| 2026-02-20 | 4 | Case Gregory C — President & CEO, Director | Gift (G): 7,500 @ $0 · Gift (G): 7,500 @ $0 · Gift (G): 11,206 @ $0 · Gift (G): 11,206 @ $0 · Gift (G): 11,206 @ $0 · Gift (G): 11,206 @ $0 | EDGAR |
| 2026-02-19 | 4 | Stevens Lisa — Chief Administrative Officer | Gift (G): 32 @ $0 | EDGAR |
| 2026-02-19 | 4 | Zeidel Darren — General Counsel | Sale (S): 5,040 @ $325.79 | EDGAR |
| 2026-02-19 | 4 | Case Gregory C — President & CEO, Director | Option exercise (M): 2,357 · Tax withholding (F): 1,001.70 @ $325.96 · Gift (G): 3,214 @ $0 · Gift (G): 3,214 @ $0 · Gift (G): 3,214 @ $0 · Gift (G): 3,214 @ $0 · +1 more | EDGAR |
| 2026-02-17 | 4 | Marcell Andy — Global CEO, Solution Lines | Grant/award (A): 12,882 · Tax withholding (F): 6,576.05 @ $314.49 · Grant/award (A): 2,226 (derivative) @ $0 · Grant/award (A): 9,539 (derivative) @ $0 | EDGAR |
| 2026-02-17 | 4 | Goltermann Lori — CEO, Regions & North America | Grant/award (A): 6,937 · Tax withholding (F): 2,713.34 @ $314.49 · Grant/award (A): 1,113 (derivative) @ $0 | EDGAR |
| 2026-02-17 | 4 | Corona Anne — Chief Commercial Officer | Grant/award (A): 3,171 · Tax withholding (F): 1,404.71 @ $314.49 · Grant/award (A): 835 (derivative) @ $0 | EDGAR |
| 2026-02-17 | 4 | Simon Mindy F. — Chief Operating Officer | Grant/award (A): 5,550 · Tax withholding (F): 2,378.10 @ $314.49 · Option exercise (M): 254 · Tax withholding (F): 108.84 @ $321.70 · Grant/award (A): 1,113 (derivative) @ $0 · Option exercise (M): 254 (derivative) @ $0 | EDGAR |
| 2026-02-17 | 4 | Reese Edmund — Chief Financial Officer | Option exercise (M): 598 · Tax withholding (F): 250.81 @ $321.70 · Grant/award (A): 2,337 (derivative) @ $0 · Option exercise (M): 598 (derivative) @ $0 | EDGAR |
| 2026-02-17 | 4 | Stevens Lisa — Chief Administrative Officer | Grant/award (A): 15,856 · Tax withholding (F): 7,568.41 @ $314.49 · Option exercise (M): 1,451 · Tax withholding (F): 701.25 @ $321.70 · Option exercise (M): 478 · Tax withholding (F): 231.01 @ $321.70 · +3 more | EDGAR |
| 2026-02-17 | 4 | Zeidel Darren — General Counsel | Grant/award (A): 7,135 · Tax withholding (F): 2,695.64 @ $314.49 · Option exercise (M): 871 · Tax withholding (F): 385.84 @ $321.70 · Option exercise (M): 209 · Tax withholding (F): 92.58 @ $321.70 · +3 more | EDGAR |
| 2026-02-17 | 4 | Case Gregory C — President & CEO, Director | Grant/award (A): 71,868 · Tax withholding (F): 32,246.15 @ $314.49 · Grant/award (A): 4,589 · Tax withholding (F): 2,059.02 @ $314.49 | EDGAR |
| 2026-02-12 | 4 | KNIGHT LESTER B — Director | Purchase (P): 4,000 @ $319.24 | EDGAR |
| 2025-12-09 | 4 | KNIGHT LESTER B — Director | Gift (G): 7,878 @ $0 | EDGAR |
| 2025-11-25 | 4 | Marcell Andy — Global CEO, Solution Lines | Option exercise (M): 86 · Tax withholding (F): 41.88 @ $346.51 · Option exercise (M): 86 (derivative) @ $0 | EDGAR |
| 2025-11-25 | 4 | Goltermann Lori — CEO, Regions & North America | Option exercise (M): 156 · Tax withholding (F): 68.09 @ $346.51 · Option exercise (M): 156 (derivative) @ $0 | EDGAR |
| 2025-11-25 | 4 | Corona Anne — Chief Commercial Officer | Option exercise (M): 132 · Tax withholding (F): 65.44 @ $346.51 · Option exercise (M): 132 (derivative) @ $0 | EDGAR |
| 2025-11-18 | 4 | Simon Mindy F. — Chief Operating Officer | Option exercise (M): 1,970 · Tax withholding (F): 606.21 @ $350.13 · Option exercise (M): 1,970 (derivative) @ $0 | EDGAR |
| 2025-11-14 | 4 | SANTONA GLORIA — Director | Gift (G): 17,736 @ $0 · Gift (G): 17,736 @ $0 | EDGAR |
| 2025-11-07 | 4 | Zeidel Darren — General Counsel | Sale (S): 7,570 @ $344.42 · Sale (S): 1,230 @ $345.17 | EDGAR |
| 2025-09-30 | 4 | Jenkins Jo Ann — Director | Grant/award (A): 547 · Tax withholding (F): 262.55 @ $356.08 | EDGAR |
| 2025-07-03 | 4 | Reese Edmund — Chief Financial Officer | Option exercise (M): 3,975 · Tax withholding (F): 2,198.11 @ $356.93 · Option exercise (M): 3,975 (derivative) @ $0 | EDGAR |
| 2025-06-30 | 4 | FRANCIS CHERYL A — Director | Grant/award (A): 637 · Tax withholding (F): 152.88 @ $353.55 | EDGAR |
| 2025-06-30 | 4 | CAMPBELL JEFFREY C — Director | Grant/award (A): 637 · Tax withholding (F): 152.88 @ $353.55 | EDGAR |
| 2025-06-30 | 4 | SANTONA GLORIA — Director | Grant/award (A): 637 · Tax withholding (F): 152.88 @ $353.55 | EDGAR |
| 2025-06-30 | 4 | NOTEBAERT RICHARD C — Director | Grant/award (A): 637 · Tax withholding (F): 152.88 @ $353.55 | EDGAR |
| 2025-06-30 | 4 | SMITH SARAH G — Director | Grant/award (A): 637 · Tax withholding (F): 152.88 @ $353.55 | EDGAR |
| 2025-06-30 | 4 | KNIGHT LESTER B — Director | Grant/award (A): 1,273 | EDGAR |
Recent 8-K events — Aon plc
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-09-22 | 8-K | 1.01 — Entry into a Material Definitive Agreement 1.02 — Termination of a Material Definitive Agreement 2.03 — Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-09-17 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-09-11 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-31 | 8-K | 1.01 — Entry into a Material Definitive Agreement 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-17 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-29 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-01 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 5.07 — Submission of Matters to a Vote of Security Holders 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-01 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-30 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-07 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
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