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AON Aon plc Class A
Insider figures are trailing 90 days, open-market Form 4 only. Institutional figures are the latest reported quarter. These windows are not simultaneous.
$6.5M net buying - trailing 90 days
1 buyers - 0 unique sellers
Historical context: No open-market activity in Oct 2026 — insiders traded in 5 of the last 25 months
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
open-market Form 4 only - grants, exercises, tax withholding excluded. ~ derived from SEC-reported shares x price.
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
Who is responsible
| Insider | Role | Net activity | Rows |
|---|---|---|---|
| KNIGHT LESTER B | — | ~$6.5M | 6 |
Transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| September 2, 2026 | KNIGHT LESTER B | — | 6 reported purchase rows | 20000 | — | ~$6.5M |
| September 2, 2026 | KNIGHT LESTER B | — | P | 1440 | 329.69 | ~$0.5M |
| September 2, 2026 | KNIGHT LESTER B | — | P | 367 | 330.51 | ~$0.1M |
| September 2, 2026 | KNIGHT LESTER B | — | P | 1739 | 325.63 | ~$0.6M |
| September 2, 2026 | KNIGHT LESTER B | — | P | 5097 | 326.53 | ~$1.7M |
| September 2, 2026 | KNIGHT LESTER B | — | P | 7212 | 327.52 | ~$2.4M |
| September 2, 2026 | KNIGHT LESTER B | — | P | 4145 | 328.34 | ~$1.4M |
| July 28, 2026 | Zeidel Darren | General Counsel | 3 reported sale rows | 1900 | — | ~$0.7M |
| July 28, 2026 | Zeidel Darren | General Counsel | S | -700 | 376 | ~$0.3M |
| July 28, 2026 | Zeidel Darren | General Counsel | S | -725 | 378 | ~$0.3M |
| July 28, 2026 | Zeidel Darren | General Counsel | S | -475 | 380 | ~$0.2M |
| July 17, 2026 | Zeidel Darren | General Counsel | 3 reported sale rows | 1950 | — | ~$0.7M |
| July 17, 2026 | Zeidel Darren | General Counsel | S | -625 | 370 | ~$0.2M |
| July 17, 2026 | Zeidel Darren | General Counsel | S | -650 | 372 | ~$0.2M |
| July 17, 2026 | Zeidel Darren | General Counsel | S | -675 | 374 | ~$0.3M |
| July 7, 2026 | Zeidel Darren | General Counsel | S | -600 | 360 | ~$0.2M |
| February 26, 2026 | Zeidel Darren | General Counsel | S | -4300 | 329.7171 | ~$1.4M |
| February 17, 2026 | Zeidel Darren | General Counsel | S | -5040 | 325.79 | ~$1.6M |
| February 10, 2026 | KNIGHT LESTER B | — | P | 4000 | 319.2391 | ~$1.3M |
| November 5, 2025 | Zeidel Darren | General Counsel | 2 reported sale rows | 8800 | — | ~$3.0M |
| November 5, 2025 | Zeidel Darren | General Counsel | S | -7570 | 344.42 | ~$2.6M |
| November 5, 2025 | Zeidel Darren | General Counsel | S | -1230 | 345.17 | ~$0.4M |
| November 27, 2024 | Simon Mindy F. | Chief Operating Officer | S | -650 | 394.34 | ~$0.3M |
| November 26, 2024 | Stevens Lisa | Chief Administrative Officer | S | -1275 | 387.682 | ~$0.5M |