Quick Takeaways
- AON - Aon plc has 31 insiders with reported activity on this page.
- Net insider value flow over the last year: -$4,814,627.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 31 Insiders of Aon plc
- Symbol
- AON on NYSE
- Location
- Dublin 2, Ireland
What Changed
- Buy value: $1,276,956; sell value: $6,091,583.
- Net share flow: -14,140.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$4,814,627.
Buys
$1,276,956
Shares: 4,000
Insiders: 1
Sells
$6,091,584
Shares: 18,140
Insiders: 1
Net
-$4,814,627
Shares: -14,140
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 9,340 | $0 | $3,059,765 | -$3,059,765 |
| 3-6 | 4,000 | 0 | $1,276,956 | $0 | +$1,276,956 |
| 6-9 | 0 | 8,800 | $0 | $3,031,818 | -$3,031,818 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Aon plc executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Gregory C. Case | President & CEO, Director | $381,298,753 | Mixed | 19 Feb 2026 | ||
| Eric Andersen | President | $119,059,242 | Mixed | 13 Feb 2025 | ||
| Lester B. Knight | Director | $98,798,215 | +$1,276,956 | +1.3% | Mixed | 10 Feb 2026 |
| Christa Davies | Chief Financial Officer | $50,329,363 | Mixed | 15 Feb 2024 | ||
| Gloria Santona | Director | $14,123,409 | Mixed | 12 Nov 2025 | ||
| Andy Weitz | Chief Marketing Officer | $12,923,829 | Mixed | 15 Feb 2024 | ||
| NOTEBAERT RICHARD C | Director | $10,315,164 | Mixed | 26 Jun 2025 | ||
| Cheryl A. Francis | Director | $10,148,288 | Mixed | 26 Jun 2025 | ||
| Fulvio Conti | Director | $9,153,269 | Mixed | 20 Jun 2024 | ||
| Richard B. Myers | Director | $9,105,655 | Mixed | 25 Jun 2021 | ||
| Lisa Stevens | Chief Administrative Officer | $9,050,907 | Mixed | 18 Feb 2026 | ||
| Carolyn Y. Woo | Director | $8,993,557 | Mixed | 15 Jun 2023 | ||
| J. Michael Losh | Director | $8,763,426 | Mixed | 17 Jun 2022 | ||
| Darren Zeidel | General Counsel | $5,260,339 | -$6,091,584 | -54% | Filing P/S | 26 Feb 2026 |
| Michael Neller | Principal Accounting Officer | $4,324,834 | Mixed | 14 Mar 2025 | ||
| Jeffrey C. Campbell | Director | $4,253,549 | Mixed | 26 Jun 2025 | ||
| Andy Marcell | Global CEO, Solution Lines | $2,848,544 | Mixed | 13 Mar 2026 | ||
| Jin-Yong Cai | Director | $2,639,383 | Mixed | 26 Jun 2025 | ||
| Lori Goltermann | CEO, Regions & North America | $2,194,793 | Mixed | 13 Mar 2026 | ||
| Mindy F. Simon | Chief Operating Officer | $2,089,919 | Mixed | 12 Feb 2026 | ||
| James G. Stavridis | Director | $2,058,403 | Mixed | 26 Jun 2025 | ||
| Byron Spruell | Director | $2,045,983 | Mixed | 26 Jun 2025 | ||
| James Platt | Chief Operating Officer | $1,513,323 | Mixed | 15 Mar 2022 | ||
| Anne Corona | Chief Commercial Officer | $1,354,833 | Mixed | 13 Mar 2026 | ||
| Jillian Slyfield | Chief Innovation Officer | $1,203,384 | Mixed | 17 Sep 2024 | ||
| Adriana Karaboutis | Director | $712,746 | Mixed | 26 Jun 2025 | ||
| Edmund Reese | Chief Financial Officer | $683,316 | Mixed | 12 Feb 2026 | ||
| Sarah G. Smith | Director | $543,568 | Mixed | 26 Jun 2025 | ||
| Jose Antonio Alvarez | Director | $306,478 | Mixed | 26 Jun 2025 | ||
| Jo Ann Jenkins | Director | $101,285 | Mixed | 26 Sep 2025 | ||
| David J. Debrunner | Principal Accounting Officer | $0 | Mixed | 15 Sep 2025 |
Top shareholders of Aon plc (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
|
Company |
9.4%
|
20,171,049
|
$7,117,959,771 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
7.6%
|
16,236,934
|
$5,729,689,450 | — | 31 Dec 2025 | |
| Capital World Investors |
13F
|
Company |
5.7%
|
12,252,904
|
$4,323,850,187 | — | 31 Dec 2025 | |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ |
13D/G
13F
|
Massachusetts Financial Services Company · Company |
4.6%
|
9,832,449
|
$3,302,227,997 | $0 | 31 Mar 2025 | |
| STATE STREET CORP |
13F
|
Company |
4.3%
|
9,203,973
|
$3,247,903,482 | — | 31 Dec 2025 | |
| DODGE & COX |
13F
|
Company |
3.7%
|
7,852,456
|
$2,770,974,673 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
2.6%
|
5,570,506
|
$1,965,721,026 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.4%
|
5,141,363
|
$1,810,725,639 | — | 31 Dec 2025 | |
| BERKSHIRE HATHAWAY INC |
13F
|
Company |
1.7%
|
3,602,995
|
$1,271,424,876 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
1.6%
|
3,479,061
|
$1,227,690,862 | — | 31 Dec 2025 | |
| NORGES BANK |
13F
|
Company |
1.5%
|
3,275,848
|
$1,155,981,242 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
1.5%
|
3,192,216
|
$1,126,469,628 | — | 31 Dec 2025 | |
| FARALLON CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.2%
|
2,665,238
|
$940,509,185 | — | 31 Dec 2025 | |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main |
13F
|
Company |
1.1%
|
2,415,006
|
$852,207,318 | — | 31 Dec 2025 | |
| EAGLE CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.1%
|
2,269,414
|
$800,830,660 | — | 31 Dec 2025 | |
| Independent Franchise Partners LLP |
13F
|
Company |
0.99%
|
2,115,523
|
$746,525,756 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.98%
|
2,099,652
|
$740,925,198 | — | 31 Dec 2025 | |
| WCM INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.93%
|
1,986,128
|
$708,034,853 | — | 31 Dec 2025 | |
| Veritas Asset Management LLP |
13F
|
Company |
0.93%
|
1,992,453
|
$703,096,815 | — | 31 Dec 2025 | |
| POLEN CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.86%
|
1,846,294
|
$651,520,305 | — | 31 Dec 2025 | |
| Neuberger Berman Group LLC |
13F
|
Company |
0.84%
|
1,804,303
|
$636,733,167 | — | 31 Dec 2025 | |
| Mitsubishi UFJ Asset Management Co., Ltd. |
13F
|
Company |
0.85%
|
1,812,888
|
$624,122,952 | — | 31 Dec 2025 | |
| Boston Partners |
13F
|
Company |
0.76%
|
1,635,007
|
$576,316,555 | — | 31 Dec 2025 | |
| DIAMOND HILL CAPITAL MANAGEMENT INC |
13F
|
Company |
0.75%
|
1,596,315
|
$563,307,659 | — | 31 Dec 2025 | |
| Mawer Investment Management Ltd. |
13F
|
Company |
0.69%
|
1,477,693
|
$521,448,306 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.66%
|
1,409,797
|
$497,489,182 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.64%
|
1,360,588
|
$480,124,175 | — | 31 Dec 2025 | |
| Legal & General Group Plc |
13F
|
Company |
0.63%
|
1,350,069
|
$476,412,348 | — | 31 Dec 2025 | |
| FMR LLC |
13F
|
Company |
0.63%
|
1,341,164
|
$473,269,889 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.63%
|
1,336,129
|
$471,493,247 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.61%
|
1,310,740
|
$462,533,931 | — | 31 Dec 2025 | |
| LAZARD ASSET MANAGEMENT LLC |
13F
|
Company |
0.6%
|
1,286,072
|
$453,829,239 | — | 31 Dec 2025 | |
| Capital International Investors |
13F
|
Company |
0.59%
|
1,255,765
|
$443,388,328 | — | 31 Dec 2025 | |
| CANTILLON CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.58%
|
1,243,018
|
$438,636,192 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
0.58%
|
1,239,308
|
$437,327,007 | — | 31 Dec 2025 | |
| Sustainable Growth Advisers, LP |
13F
|
Company |
0.57%
|
1,221,467
|
$431,031,275 | — | 31 Dec 2025 | |
| Amundi |
13F
|
Individual |
0.57%
|
1,217,341
|
$429,575,292 | — | 31 Dec 2025 | |
| Artisan Partners Limited Partnership |
13F
|
Company |
0.52%
|
1,117,428
|
$394,317,993 | — | 31 Dec 2025 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
0.52%
|
1,108,214
|
$391,069,610 | — | 31 Dec 2025 | |
| Longview Partners (Guernsey) LTD |
13F
|
Company |
0.52%
|
1,105,784
|
$390,209,058 | — | 31 Dec 2025 | |
| Gregory C. Case |
3/4/5
|
President & CEO, Director |
0.52%
|
1,108,878
|
$381,298,753 | — | 19 Feb 2026 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.49%
|
1,040,718
|
$367,289,974 | — | 31 Dec 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.45%
|
954,748
|
$336,912,000 | — | 31 Dec 2025 | |
| FIL Ltd |
13F
|
Company |
0.41%
|
883,757
|
$311,860,170 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.38%
|
820,117
|
$289,402,887 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.38%
|
808,183
|
$285,191,441 | — | 31 Dec 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.37%
|
795,630
|
$280,761,914 | — | 31 Dec 2025 | |
| VIKING GLOBAL INVESTORS LP |
13F
|
Company |
0.37%
|
783,650
|
$276,534,412 | — | 31 Dec 2025 | |
| Vontobel Holding Ltd. |
13F
|
Company |
0.36%
|
760,139
|
$268,237,850 | — | 31 Dec 2025 | |
| USS Investment Management Ltd |
13F
|
Company |
0.32%
|
681,743
|
$240,590,513 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for Aon plc
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Anne Corona | AON | Class A Ordinary Stock | Tax liability | -3.82% | -163 | 4,098 | 13 Mar 2026 | Direct | ||
| Anne Corona | AON | Class A Ordinary Stock | Options Exercise | 9.4% | 367 | 4,272 | 13 Mar 2026 | Direct | ||
| Anne Corona | AON | Restricted Share Unit (Right to Receive) | Options Exercise | -100% | -367 | 0 | 13 Mar 2026 | Direct | ||
| Lori Goltermann | AON | Class A Ordinary Stock | Tax liability | -3.29% | -225 | 6,632 | 13 Mar 2026 | Direct | ||
| Lori Goltermann | AON | Class A Ordinary Stock | Options Exercise | 8.09% | 518 | 6,922 | 13 Mar 2026 | Direct | ||
| Lori Goltermann | AON | Restricted Share Unit (Right to Receive) | Options Exercise | -100% | -518 | 0 | 13 Mar 2026 | Direct | ||
| Andy Marcell | AON | Class A Ordinary Stock | Tax liability | -8.47% | -794 | 8,582 | 13 Mar 2026 | Direct | ||
| Andy Marcell | AON | Class A Ordinary Stock | Options Exercise | 21.7% | 1,630 | 9,149 | 13 Mar 2026 | Direct | ||
| Andy Marcell | AON | Restricted Share Unit (Right to Receive) | Options Exercise | -100% | -1,630 | 0 | 13 Mar 2026 | Direct | ||
| Darren Zeidel | AON | Class A Ordinary Stock | Sale | -21.2% | $1,417,784 | $329.72 | -4,300 | 15,954 | 26 Feb 2026 | Direct |
| Gregory C. Case | AON | Class A Ordinary Stock | Gift | 14.7% | 22,412 | 175,170 | 19 Feb 2026 | By Trust | ||
| Gregory C. Case | AON | Class A Ordinary Stock | Gift | -100% | -37,412 | 0 | 19 Feb 2026 | By GRAT | ||
| Lisa Stevens | AON | Class A Ordinary Stock | Gift | -0.12% | -32 | 26,321 | 18 Feb 2026 | Direct | ||
| Gregory C. Case | AON | Class A Ordinary Stock | Gift | 5.11% | 6,428 | 132,243 | 17 Feb 2026 | By Trust | ||
| Gregory C. Case | AON | Class A Ordinary Stock | Gift | -0.68% | -6,428 | 933,709 | 17 Feb 2026 | Direct | ||
| Gregory C. Case | AON | Class A Ordinary Stock | Tax liability | -0.11% | -1,002 | 940,137 | 17 Feb 2026 | Direct | ||
| Gregory C. Case | AON | Class A Ordinary Stock | Options Exercise | 0.25% | 2,357 | 941,139 | 17 Feb 2026 | Direct | ||
| Gregory C. Case | AON | Restricted Share Unit (Right to Receive) | Options Exercise | -100% | -2,357 | 0 | 17 Feb 2026 | Direct | ||
| Darren Zeidel | AON | Class A Ordinary Stock | Sale | -19.9% | $1,641,982 | $325.79 | -5,040 | 20,254 | 17 Feb 2026 | Direct |
| Darren Zeidel | AON | Class A Ordinary Stock | Tax liability | -1.86% | -478 | 25,178 | 13 Feb 2026 | Direct | ||
| Darren Zeidel | AON | Class A Ordinary Stock | Options Exercise | 4.41% | 1,080 | 25,564 | 13 Feb 2026 | Direct | ||
| Darren Zeidel | AON | Restricted Share Unit (Right to Receive) | Options Exercise | -100% | -1,080 | 0 | 13 Feb 2026 | Direct | ||
| Lisa Stevens | AON | Class A Ordinary Stock | Tax liability | -3.45% | -932 | 26,107 | 13 Feb 2026 | Direct | ||
| Lisa Stevens | AON | Class A Ordinary Stock | Options Exercise | 7.75% | 1,929 | 26,808 | 13 Feb 2026 | Direct | ||
| Lisa Stevens | AON | Restricted Share Unit (Right to Receive) | Options Exercise | -100% | -1,929 | 0 | 13 Feb 2026 | Direct | ||
| Mindy F. Simon | AON | Class A Ordinary Stock | Tax liability | -1.65% | -109 | 6,496 | 13 Feb 2026 | Direct | ||
| Mindy F. Simon | AON | Class A Ordinary Stock | Options Exercise | 4% | 254 | 6,605 | 13 Feb 2026 | Direct | ||
| Mindy F. Simon | AON | Restricted Share Unit (Right to Receive) | Options Exercise | -33.3% | -254 | 508 | 13 Feb 2026 | Direct | ||
| Edmund Reese | AON | Class A Ordinary Stock | Tax liability | -10.6% | -251 | 2,124 | 13 Feb 2026 | Direct | ||
| Edmund Reese | AON | Class A Ordinary Stock | Options Exercise | 33.6% | 598 | 2,375 | 13 Feb 2026 | Direct | ||
| Edmund Reese | AON | Restricted Share Unit (Right to Receive) | Options Exercise | -33.3% | -598 | 1,196 | 13 Feb 2026 | Direct | ||
| Darren Zeidel | AON | Class A Ordinary Stock | Tax liability | -9.84% | -2,696 | 24,693 | 12 Feb 2026 | Direct | ||
| Darren Zeidel | AON | Class A Ordinary Stock | Award | 35.2% | 7,135 | 27,388 | 12 Feb 2026 | Direct | ||
| Darren Zeidel | AON | Restricted Share Unit (Right to Receive) | Award | 1,113 | 1,113 | 12 Feb 2026 | Direct | |||
| Lisa Stevens | AON | Class A Ordinary Stock | Tax liability | -23% | -7,568 | 25,357 | 12 Feb 2026 | Direct | ||
| Lisa Stevens | AON | Class A Ordinary Stock | Award | 92.9% | 15,856 | 32,925 | 12 Feb 2026 | Direct | ||
| Lisa Stevens | AON | Restricted Share Unit (Right to Receive) | Award | 2,059 | 2,059 | 12 Feb 2026 | Direct | |||
| Mindy F. Simon | AON | Class A Ordinary Stock | Tax liability | -27.2% | -2,378 | 6,351 | 12 Feb 2026 | Direct | ||
| Mindy F. Simon | AON | Class A Ordinary Stock | Award | 174.6% | 5,550 | 8,729 | 12 Feb 2026 | Direct | ||
| Mindy F. Simon | AON | Restricted Share Unit (Right to Receive) | Award | 1,113 | 1,113 | 12 Feb 2026 | Direct | |||
| Edmund Reese | AON | Restricted Share Unit (Right to Receive) | Award | 2,337 | 2,337 | 12 Feb 2026 | Direct | |||
| Andy Marcell | AON | Class A Ordinary Stock | Tax liability | -45.2% | -6,576 | 7,983 | 12 Feb 2026 | Direct | ||
| Andy Marcell | AON | Class A Ordinary Stock | Award | 768% | 12,882 | 14,559 | 12 Feb 2026 | Direct | ||
| Andy Marcell | AON | Restricted Share Unit (Right to Receive) | Award | 11,765 | 9,539 | 12 Feb 2026 | Direct | |||
| Lori Goltermann | AON | Class A Ordinary Stock | Tax liability | -29.4% | -2,713 | 6,503 | 12 Feb 2026 | Direct | ||
| Lori Goltermann | AON | Class A Ordinary Stock | Award | 304.4% | 6,937 | 9,216 | 12 Feb 2026 | Direct | ||
| Lori Goltermann | AON | Restricted Share Unit (Right to Receive) | Award | 1,113 | 1,113 | 12 Feb 2026 | Direct | |||
| Anne Corona | AON | Class A Ordinary Stock | Tax liability | -26% | -1,405 | 3,990 | 12 Feb 2026 | Direct | ||
| Anne Corona | AON | Class A Ordinary Stock | Award | 142.6% | 3,171 | 5,395 | 12 Feb 2026 | Direct | ||
| Anne Corona | AON | Restricted Share Unit (Right to Receive) | Award | 835 | 835 | 12 Feb 2026 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.