The Filings Report

Aon plc insider trading

AONfinancial statementsForm 4 filings on EDGAR176 transactions since Nov 1, 2024

From August 4, 2026 to November 1, 2026, 1 insider at Aon plc bought $7M of stock in the open market, and 0 sold $0. Officers and directors accounted for $7M of purchases and $0 of sales. The last reported transaction was an open-market buy by Knight Lester B on September 2, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through September 3, 2026; awards, option exercises, tax withholding and gifts are excluded from these totals.

Stock price and insider activity

Daily price candles with insider purchases and sales directly beneath them on the same timeline. Bars show individual days; totals sum all days in the selected period.

AON daily priceSplit-adjusted prices in US dollars

Bought $7MSold $0Aug 4, 2026 – Nov 1, 2026

Oct 30, 2026O $326.62 · H $329.43 · L $321.50 · C $321.67Bought $0 (0)Sold $0 (0)
$260$288$316$343$3712026-08-04: open $353.37, high $357.09, low $350.23, close $356.652026-08-05: open $356.96, high $360.60, low $355.22, close $359.972026-08-06: open $362.95, high $364.99, low $356.84, close $360.752026-08-07: open $357.51, high $360.60, low $354.61, close $358.302026-08-10: open $357.71, high $359.53, low $355.00, close $356.972026-08-11: open $354.00, high $359.10, low $354.00, close $356.462026-08-12: open $354.00, high $355.91, low $349.99, close $352.362026-08-13: open $354.33, high $358.55, low $349.33, close $357.082026-08-14: open $357.08, high $359.98, low $353.78, close $355.832026-08-17: open $354.00, high $355.27, low $346.50, close $347.222026-08-18: open $343.20, high $350.13, low $343.03, close $343.202026-08-19: open $344.23, high $352.84, low $341.75, close $348.432026-08-20: open $348.90, high $356.12, low $346.32, close $351.932026-08-21: open $352.39, high $356.86, low $350.57, close $355.112026-08-24: open $357.91, high $361.73, low $356.50, close $359.102026-08-25: open $357.00, high $360.30, low $354.14, close $354.832026-08-26: open $354.63, high $356.46, low $353.19, close $353.982026-08-27: open $350.51, high $352.88, low $348.03, close $349.562026-08-28: open $350.96, high $358.71, low $349.76, close $355.402026-08-31: open $340.00, high $343.26, low $320.21, close $321.522026-09-01: open $321.42, high $328.52, low $312.92, close $326.302026-09-02: open $327.70, high $331.60, low $324.79, close $330.882026-09-03: open $332.00, high $336.45, low $325.68, close $327.002026-09-04: open $328.18, high $328.84, low $321.49, close $323.092026-09-08: open $316.78, high $321.57, low $314.95, close $315.792026-09-09: open $313.45, high $315.67, low $303.59, close $304.692026-09-10: open $304.97, high $310.04, low $304.20, close $307.772026-09-11: open $310.85, high $311.89, low $302.44, close $302.692026-09-14: open $308.08, high $312.39, low $305.92, close $311.542026-09-15: open $311.60, high $311.98, low $304.59, close $304.672026-09-16: open $303.40, high $304.06, low $298.48, close $300.572026-09-17: open $299.54, high $302.12, low $295.78, close $296.052026-09-18: open $294.25, high $297.73, low $293.00, close $295.642026-09-21: open $297.01, high $297.87, low $290.70, close $290.822026-09-22: open $291.06, high $291.69, low $282.70, close $286.102026-09-23: open $284.67, high $286.80, low $281.18, close $281.602026-09-24: open $281.60, high $283.03, low $275.38, close $276.092026-09-25: open $277.00, high $280.98, low $276.52, close $277.992026-09-28: open $277.50, high $278.40, low $270.00, close $271.952026-09-29: open $269.91, high $276.97, low $269.02, close $275.902026-09-30: open $275.78, high $278.19, low $273.80, close $276.772026-10-01: open $277.48, high $279.49, low $274.81, close $275.952026-10-02: open $274.96, high $276.39, low $268.90, close $269.452026-10-05: open $268.00, high $272.37, low $266.33, close $272.052026-10-06: open $270.83, high $274.71, low $270.10, close $274.022026-10-07: open $275.07, high $275.31, low $269.72, close $270.472026-10-08: open $271.29, high $277.90, low $270.03, close $277.122026-10-09: open $276.63, high $277.49, low $272.83, close $273.472026-10-12: open $274.87, high $276.01, low $273.24, close $274.782026-10-13: open $275.99, high $277.62, low $272.39, close $274.712026-10-14: open $275.63, high $277.25, low $272.04, close $275.352026-10-15: open $279.85, high $288.47, low $279.85, close $286.802026-10-16: open $288.79, high $292.73, low $287.74, close $292.552026-10-19: open $289.03, high $291.91, low $287.18, close $289.742026-10-20: open $292.59, high $298.55, low $290.00, close $296.652026-10-21: open $296.58, high $297.00, low $293.32, close $294.352026-10-22: open $296.01, high $306.95, low $296.01, close $306.692026-10-23: open $305.01, high $307.67, low $301.76, close $303.522026-10-26: open $302.61, high $303.49, low $299.13, close $302.062026-10-27: open $297.27, high $303.71, low $295.52, close $302.392026-10-28: open $314.00, high $318.72, low $307.29, close $315.722026-10-29: open $317.59, high $323.57, low $313.94, close $321.642026-10-30: open $326.62, high $329.43, low $321.50, close $321.67Insider purchases / sales · USD$10M$0−$10M2026-09-02: 6 purchases ($7M), 0 sales ($0)Aug 4Aug 26Sep 17Oct 9Oct 30

purchases above zero; sales below. Both use the transaction date and the same dollar scale. Hover, tap, or use arrow keys to inspect a date. Awards, exercises, tax withholding and gifts are excluded.

Dates with prices or insider activity are spaced evenly; empty weekends and holidays are omitted. Prices through Oct 30, 2026. Insider data through Nov 1, 2026. Prices are adjusted for splits; transaction values are reported dollars.

Every transaction

176 transactions from November 1, 2024 to November 1, 2026, newest first. Open-market purchases and sales are coloured; awards, exercises, tax withholding and gifts are grey and not counted.

TradedInsiderRoleTransactionSharesPriceValueHeld afterFiled
Sep 2, 2026Knight Lester BDirectoropen-market buyindirect1,739$325.63$566K144,739Sep 3, 2026
Sep 2, 2026Knight Lester BDirectoropen-market buyindirect5,097$326.53$2M149,836Sep 3, 2026
Sep 2, 2026Knight Lester BDirectoropen-market buyindirect7,212$327.52$2M157,048Sep 3, 2026
Sep 2, 2026Knight Lester BDirectoropen-market buyindirect4,145$328.34$1M161,193Sep 3, 2026
Sep 2, 2026Knight Lester BDirectoropen-market buyindirect1,440$329.69$475K162,633Sep 3, 2026
Sep 2, 2026Knight Lester BDirectoropen-market buyindirect367$330.51$121K163,000Sep 3, 2026
Jul 28, 2026Zeidel DarrenGeneral Counselopen-market sale10b5-1700$376.00$263K12,704Jul 30, 2026
Jul 28, 2026Zeidel DarrenGeneral Counselopen-market sale10b5-1725$378.00$274K11,979Jul 30, 2026
Jul 28, 2026Zeidel DarrenGeneral Counselopen-market sale10b5-1475$380.00$181K11,504Jul 30, 2026
Jul 17, 2026Zeidel DarrenGeneral Counselopen-market sale10b5-1625$370.00$231K14,729Jul 21, 2026
Jul 17, 2026Zeidel DarrenGeneral Counselopen-market sale10b5-1650$372.00$242K14,079Jul 21, 2026
Jul 17, 2026Zeidel DarrenGeneral Counselopen-market sale10b5-1675$374.00$252K13,404Jul 21, 2026
Jul 7, 2026Zeidel DarrenGeneral Counselopen-market sale10b5-1600$360.00$216K15,354Jul 9, 2026
Jul 1, 2026Reese EdmundChief Financial Officeroption exercise3,975——6,099Jul 6, 2026
Jul 1, 2026Reese EdmundChief Financial Officertax withholding2,198$343.56$755K3,901Jul 6, 2026
Jun 25, 2026Knight Lester BDirectoraward1,488——5,227Jun 29, 2026
Jun 25, 2026Alvarez Jose AntonioDirectoraward776——1,643Jun 29, 2026
Jun 25, 2026Alvarez Jose AntonioDirectortax withholding372$315.95$118K1,270Jun 29, 2026
Jun 25, 2026Francis Cheryl ADirectoraward776——29,480Jun 29, 2026
Jun 25, 2026Francis Cheryl ADirectortax withholding186$315.95$59K29,294Jun 29, 2026
Jun 25, 2026Stavridis James G.Directoraward776——1,564Jun 29, 2026
Jun 25, 2026Stavridis James G.Directortax withholding186$315.95$59K1,377Jun 29, 2026
Jun 25, 2026Notebaert Richard CDirectoraward776——28,514Jun 29, 2026
Jun 25, 2026Notebaert Richard CDirectortax withholding186$315.95$59K28,328Jun 29, 2026
Jun 25, 2026Santona GloriaDirectoraward776——22,648Jun 29, 2026
Jun 25, 2026Santona GloriaDirectortax withholding186$315.95$59K22,462Jun 29, 2026
Jun 25, 2026Campbell Jeffrey CDirectoraward776——12,807Jun 29, 2026
Jun 25, 2026Campbell Jeffrey CDirectortax withholding186$315.95$59K12,621Jun 29, 2026
Jun 25, 2026Spruell ByronDirectoraward776——6,563Jun 29, 2026
Jun 25, 2026Spruell ByronDirectortax withholding186$315.95$59K6,377Jun 29, 2026
Jun 25, 2026Cai Jin-YongDirectoraward776——8,241Jun 29, 2026
Jun 25, 2026Cai Jin-YongDirectortax withholding397$315.95$125K7,845Jun 29, 2026
Jun 25, 2026Smith Sarah GDirectoraward776——2,300Jun 29, 2026
Jun 25, 2026Smith Sarah GDirectortax withholding186$315.95$59K2,114Jun 29, 2026
Jun 25, 2026Jenkins Jo AnnDirectoraward776——1,060Jun 29, 2026
Jun 25, 2026Jenkins Jo AnnDirectortax withholding186$315.95$59K874Jun 29, 2026
Jun 25, 2026Karaboutis AdrianaDirectoraward776——2,792Jun 29, 2026
Jun 25, 2026Karaboutis AdrianaDirectortax withholding186$315.95$59K2,606Jun 29, 2026
May 12, 2026Notebaert Richard CDirectorgift1,438$0.00—27,738May 14, 2026
Mar 13, 2026Corona AnneChief Commercial Officeroption exercise193——4,183Mar 17, 2026
Mar 13, 2026Corona AnneChief Commercial Officertax withholding86$321.41$27K4,098Mar 17, 2026
Mar 13, 2026Corona AnneChief Commercial Officeroption exercise174——4,272Mar 17, 2026
Mar 13, 2026Corona AnneChief Commercial Officertax withholding77$321.41$25K4,195Mar 17, 2026
Mar 13, 2026Goltermann LoriCEO, Regions & North Americatax withholding126$321.41$41K6,795Mar 17, 2026
Mar 13, 2026Goltermann LoriCEO, Regions & North Americaoption exercise290——6,922Mar 17, 2026
Mar 13, 2026Goltermann LoriCEO, Regions & North Americatax withholding99$321.41$32K6,632Mar 17, 2026
Mar 13, 2026Goltermann LoriCEO, Regions & North Americaoption exercise228——6,731Mar 17, 2026
Mar 13, 2026Marcell AndyGlobal CEO, Solution Linestax withholding226$321.41$73K8,820Mar 17, 2026
Mar 13, 2026Marcell AndyGlobal CEO, Solution Linesoption exercise1,166——9,149Mar 17, 2026
Mar 13, 2026Marcell AndyGlobal CEO, Solution Linestax withholding568$321.41$183K8,582Mar 17, 2026

Who the insiders are

Everyone who reported a transaction since November 1, 2024, by open-market value over twelve months. Shares held are after the insider’s latest directly held transaction.

InsiderRoleLast transactionKindShares heldBought, 12 monthsSold, 12 monthsSales under a plan
Knight Lester BDirectorSep 2, 2026open-market buy5,227$8M (7)——
Zeidel DarrenGeneral CounselJul 28, 2026open-market sale12,704—$8M (11)8 of 11
Case Gregory CPresident & CEO, DirectorFeb 19, 2026gift936,923———
Stevens LisaChief Administrative OfficerFeb 18, 2026gift26,321———
Simon Mindy F.Chief Operating OfficerFeb 13, 2026tax withholding6,496———
Corona AnneChief Commercial OfficerMar 13, 2026option exercise4,183———
Goltermann LoriCEO, Regions & North AmericaMar 13, 2026tax withholding6,795———
Marcell AndyGlobal CEO, Solution LinesMar 13, 2026tax withholding8,820———
Notebaert Richard CDirectorJun 25, 2026award28,514———
Reese EdmundChief Financial OfficerJul 1, 2026option exercise6,099———
Santona GloriaDirectorJun 25, 2026award22,648———
Neller MichaelPrincipal Accounting OfficerMar 14, 2025tax withholding8,209———
Andersen EricPresidentFeb 14, 2025option exercise178,210———
Alvarez Jose AntonioDirectorJun 25, 2026award1,643———
Francis Cheryl ADirectorJun 25, 2026award29,480———
Stavridis James G.DirectorJun 25, 2026award1,564———
Campbell Jeffrey CDirectorJun 25, 2026award12,807———
Spruell ByronDirectorJun 25, 2026award6,563———
Cai Jin-YongDirectorJun 25, 2026award8,241———
Smith Sarah GDirectorJun 25, 2026award2,300———
Jenkins Jo AnnDirectorJun 25, 2026award1,060———
Karaboutis AdrianaDirectorJun 25, 2026award2,792———

Questions

Are Aon plc insiders buying or selling?

Over the twelve months to November 1, 2026, 1 insider at Aon plc sold $8M of stock in the open market, all by officers and directors, and 1 insider bought $8M, all by officers and directors. Net, insiders bought $76K. Only open-market purchases and sales are counted.

Who sold the most Aon plc stock in the last year?

Zeidel Darren (General Counsel) sold $8M in 11 open-market sales over the twelve months to November 1, 2026.

Do Aon plc executives sell under 10b5-1 plans?

8 of the 11 open-market sales in the last twelve months (73%) were reported as made under a Rule 10b5-1 trading plan, set up in advance. A sale under a plan is still counted as a sale.

What counts as insider buying here?

Only open-market purchases (Form 4 code P) and sales (code S) by officers, directors and 10% owners. Stock awards, option exercises, shares withheld for tax and gifts are listed in the table but never counted as buying or selling.

More on Aon plc

From Form 4, 4/A and 5 filings with the SEC. A record of insider transactions, not a recommendation.