Aon plc (AON)

Data as of Sep 4, 2026, from SEC Form 4 filings.

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Latest AON insider trades

Lester B. Knight - Director
Open-market purchase$566K
Sep 2, 2026
Lester B. Knight - Director
Open-market purchase$1.66M
Sep 2, 2026

About Aon plc (AON)

Aon plc files with the SEC under CIK 0000315293 and is classified as insurance agents, brokers and service. It is grouped with Financials companies on this site.

Sector: Financials

SEC filings for AON on EDGAR

AON Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Open-market purchase	6	20,000	$6.55M
Open-market sale	6	3,850	$1.44M

AON insider transactions (Form 4)

102

54 Form 4 filings on record, the earliest from Nov 19, 2024, newest first. Filing history page 1 of 2.

Date	Insider	Transaction	Security	Shares	Price	Value
Sep 2, 2026	Lester B. Knight - Director	Open-market purchase	Class A Ordinary Stock	1,739	$325.63^{footnote F1}	$566K
Sep 2, 2026	Lester B. Knight - Director	Open-market purchase	Class A Ordinary Stock	5,097	$326.53^{footnote F2}	$1.66M
Sep 2, 2026	Lester B. Knight - Director	Open-market purchase	Class A Ordinary Stock	7,212	$327.52^{footnote F3}	$2.36M
Sep 2, 2026	Lester B. Knight - Director	Open-market purchase	Class A Ordinary Stock	4,145	$328.34^{footnote F4}	$1.36M
Sep 2, 2026	Lester B. Knight - Director	Open-market purchase	Class A Ordinary Stock	1,440	$329.69^{footnote F5}	$475K
Sep 2, 2026	Lester B. Knight - Director	Open-market purchase	Class A Ordinary Stock	367	$330.51^{footnote F6}	$121K
Footnote F1 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $325.03 to $326.02, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR Footnote F2 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $326.03 to $327.02, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR Footnote F3 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $327.04 to $328.03, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR Footnote F4 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $328.04 to $329.03, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR Footnote F5 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $329.08 to $330.07, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR Footnote F6 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $330.09 to $330.88, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR
Jul 28, 2026	Darren Zeidel - Officer	Open-market sale	Class A Ordinary Stock	700	$376.00^{footnote F1}	$263K
Jul 28, 2026	Darren Zeidel - Officer	Open-market sale	Class A Ordinary Stock	725	$378.00^{footnote F1}	$274K
Jul 28, 2026	Darren Zeidel - Officer	Open-market sale	Class A Ordinary Stock	475	$380.00^{footnote F1}	$181K
Footnote F1 (price): The transaction reported was effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 5, 2025.
Jul 17, 2026	Darren Zeidel - Officer	Open-market sale	Class A Ordinary Stock	625	$370.00^{footnote F1}	$231K
Jul 17, 2026	Darren Zeidel - Officer	Open-market sale	Class A Ordinary Stock	650	$372.00^{footnote F1}	$242K
Jul 17, 2026	Darren Zeidel - Officer	Open-market sale	Class A Ordinary Stock	675	$374.00^{footnote F1}	$252K
Footnote F1 (price): The transaction reported was effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 5, 2025.
Jul 7, 2026	Darren Zeidel - Officer	Open-market sale	Class A Ordinary Stock	600	$360.00^{footnote F1}	$216K
Footnote F1 (price): The transaction reported was effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 5, 2025.
Jul 1, 2026	Edmund Reese - Officer	Option exercise	Class A Ordinary Stock	3,975	-^{footnote F1}	-
Jul 1, 2026	Edmund Reese - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	2,198	$343.56	$755K
Jul 1, 2026	Edmund Reese - Officer	Option exercise	Restricted Share Unit (Right to Receive)	3,975	$0.00	-
Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
Jun 25, 2026	Lester B. Knight	Grant or award	Class A Ordinary Stock	1,488	-^{footnote F1}	-
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	Jose Antonio Alvarez	Tax withholding / forfeiture	Class A Ordinary Stock	372.47	$315.95	$118K
Jun 25, 2026	Jose Antonio Alvarez	Grant or award	Class A Ordinary Stock	776	-^{footnote F1}	-
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	Cheryl A. Francis	Tax withholding / forfeiture	Class A Ordinary Stock	186.24	$315.95	$59K
Jun 25, 2026	Cheryl A. Francis	Grant or award	Class A Ordinary Stock	776	-^{footnote F1}	-
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	James G. Stavridis	Tax withholding / forfeiture	Class A Ordinary Shares	186.24	$315.95	$59K
Jun 25, 2026	James G. Stavridis	Grant or award	Class A Ordinary Shares	776	-^{footnote F1}	-
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	Richard C. Notebaert	Tax withholding / forfeiture	Class A Ordinary Stock	186.24	$315.95	$59K
Jun 25, 2026	Richard C. Notebaert	Grant or award	Class A Ordinary Stock	776	-^{footnote F1}	-
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	Gloria Santona	Tax withholding / forfeiture	Class A Ordinary Stock	186.24	$315.95	$59K
Jun 25, 2026	Gloria Santona	Grant or award	Class A Ordinary Stock	776	-^{footnote F1}	-
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	Jeffrey C. Campbell	Tax withholding / forfeiture	Class A Ordinary Stock	186.24	$315.95	$59K
Jun 25, 2026	Jeffrey C. Campbell	Grant or award	Class A Ordinary Stock	776	-^{footnote F1}	-
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	Byron Spruell	Grant or award	Class A Ordinary Stock	776	-^{footnote F1}	-
Jun 25, 2026	Byron Spruell	Tax withholding / forfeiture	Class A Ordinary Stock	186.24	$315.95	$59K
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	Jin-Yong Cai	Grant or award	Class A Ordinary Stock	776	-^{footnote F1}	-
Jun 25, 2026	Jin-Yong Cai	Tax withholding / forfeiture	Class A Ordinary Stock	396.52	$315.95	$125K
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	Sarah G. Smith	Grant or award	Class A Ordinary Stock	776	-^{footnote F1}	-
Jun 25, 2026	Sarah G. Smith	Tax withholding / forfeiture	Class A Ordinary Stock	186.24	$315.95	$59K
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	Jo Ann Jenkins	Grant or award	Class A Ordinary Stock	776	-^{footnote F1}	-
Jun 25, 2026	Jo Ann Jenkins	Tax withholding / forfeiture	Class A Ordinary Stock	186.24	$315.95	$59K
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
Jun 25, 2026	Adriana Karaboutis	Grant or award	Class A Ordinary Stock	776	-^{footnote F1}	-
Jun 25, 2026	Adriana Karaboutis	Tax withholding / forfeiture	Class A Ordinary Stock	186.24	$315.95	$59K
Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.
May 12, 2026	Richard C. Notebaert	Gift	Class A Ordinary Stock	1,438	$0.00	-
Mar 13, 2026	Anne Corona - Officer	Option exercise	Class A Ordinary Stock	193	-^{footnote F1}	-
Mar 13, 2026	Anne Corona - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	85.5	$321.41	$27K
Mar 13, 2026	Anne Corona - Officer	Option exercise	Class A Ordinary Stock	174	-^{footnote F1}	-
Mar 13, 2026	Anne Corona - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	77.08	$321.41	$25K
Mar 13, 2026	Anne Corona - Officer	Option exercise	Restricted Share Unit (Right to Receive)	193	$0.00	-
Mar 13, 2026	Anne Corona - Officer	Option exercise	Restricted Share Unit (Right to Receive)	174	$0.00	-
Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
Mar 13, 2026	Lori Goltermann - Officer	Option exercise	Class A Ordinary Stock	228	-^{footnote F1}	-
Mar 13, 2026	Lori Goltermann - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	99.18	$321.41	$32K
Mar 13, 2026	Lori Goltermann - Officer	Option exercise	Class A Ordinary Stock	290	-^{footnote F1}	-
Mar 13, 2026	Lori Goltermann - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	126.15	$321.41	$41K
Mar 13, 2026	Lori Goltermann - Officer	Option exercise	Restricted Share Unit (Right to Receive)	228	$0.00	-
Mar 13, 2026	Lori Goltermann - Officer	Option exercise	Restricted Share Unit (Right to Receive)	290	$0.00	-
Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
Mar 13, 2026	Andy Marcell - Officer	Option exercise	Class A Ordinary Stock	1,166	-^{footnote F1}	-
Mar 13, 2026	Andy Marcell - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	567.83	$321.41	$183K
Mar 13, 2026	Andy Marcell - Officer	Option exercise	Class A Ordinary Stock	464	-^{footnote F1}	-
Mar 13, 2026	Andy Marcell - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	225.96	$321.41	$73K
Mar 13, 2026	Andy Marcell - Officer	Option exercise	Restricted Share Unit (Right to Receive)	1,166	$0.00	-
Mar 13, 2026	Andy Marcell - Officer	Option exercise	Restricted Share Unit (Right to Receive)	464	$0.00	-
Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
Feb 26, 2026	Darren Zeidel - Officer	Open-market sale	Class A Ordinary Stock	4,300	$329.72^{footnote F1}	$1.42M
Footnote F1 (price): The price reported is a weighted average price. Shares were sold in a series of transactions within the same trading day at prices ranging from $329.68 to $330.015, inclusive. Full information regarding the number of shares sold at each separate price is available upon request… Full note on SEC EDGAR
Feb 19, 2026	Gregory C. Case - Officer	Gift	Class A Ordinary Stock	11,206	$0.00	-
Feb 19, 2026	Gregory C. Case - Officer	Gift	Class A Ordinary Stock	11,206	$0.00	-
Feb 19, 2026	Gregory C. Case - Officer	Gift	Class A Ordinary Stock	7,500	$0.00	-
Feb 19, 2026	Gregory C. Case - Officer	Gift	Class A Ordinary Stock	7,500	$0.00	-
Feb 19, 2026	Gregory C. Case - Officer	Gift	Class A Ordinary Stock	11,206	$0.00	-
Feb 19, 2026	Gregory C. Case - Officer	Gift	Class A Ordinary Stock	11,206	$0.00	-
Feb 18, 2026	Lisa Stevens - Officer	Gift	Class A Ordinary Stock	32	$0.00	-
Feb 17, 2026	Gregory C. Case - Officer	Gift	Class A Ordinary Stock	3,214	$0.00	-
Feb 17, 2026	Gregory C. Case - Officer	Gift	Class A Ordinary Stock	3,214	$0.00	-
Feb 17, 2026	Gregory C. Case - Officer	Gift	Class A Ordinary Stock	3,214	$0.00	-
Feb 17, 2026	Gregory C. Case - Officer	Gift	Class A Ordinary Stock	3,214	$0.00	-
Feb 17, 2026	Gregory C. Case - Officer	Option exercise	Class A Ordinary Stock	2,357	-^{footnote F1}	-
Feb 17, 2026	Gregory C. Case - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	1,002	$325.96	$327K
Feb 17, 2026	Gregory C. Case - Officer	Option exercise	Restricted Share Unit (Right to Receive)	2,357	$0.00	-
Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
Feb 17, 2026	Darren Zeidel - Officer	Open-market sale	Class A Ordinary Stock	5,040	$325.79^{footnote F1}	$1.64M
Footnote F1 (price): The transaction reported was effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 5, 2025.
Feb 12, 2026	Darren Zeidel - Officer	Grant or award	Class A Ordinary Stock	7,135	-^{footnote F1}	-
Feb 12, 2026	Darren Zeidel - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	2,696	$314.49	$848K
Feb 13, 2026	Darren Zeidel - Officer	Option exercise	Class A Ordinary Stock	871	-^{footnote F3}	-
Feb 13, 2026	Darren Zeidel - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	385.84	$321.70	$124K
Feb 13, 2026	Darren Zeidel - Officer	Option exercise	Class A Ordinary Stock	209	-^{footnote F3}	-
Feb 13, 2026	Darren Zeidel - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	92.59	$321.70	$30K
Feb 12, 2026	Darren Zeidel - Officer	Grant or award	Restricted Share Unit (Right to Receive)	1,113	$0.00	-
Feb 13, 2026	Darren Zeidel - Officer	Option exercise	Restricted Share Unit (Right to Receive)	871	$0.00	-
Feb 13, 2026	Darren Zeidel - Officer	Option exercise	Restricted Share Unit (Right to Receive)	209	$0.00	-
Footnote F1 (price): Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the eighteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the… Full note on SEC EDGAR Footnote F3 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
Feb 12, 2026	Lisa Stevens - Officer	Grant or award	Class A Ordinary Stock	15,856	-^{footnote F1}	-
Feb 12, 2026	Lisa Stevens - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	7,568	$314.49	$2.38M
Feb 13, 2026	Lisa Stevens - Officer	Option exercise	Class A Ordinary Stock	1,451	-^{footnote F4}	-
Feb 13, 2026	Lisa Stevens - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	701.25	$321.70	$226K
Feb 13, 2026	Lisa Stevens - Officer	Option exercise	Class A Ordinary Stock	478	-^{footnote F4}	-
Feb 13, 2026	Lisa Stevens - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	231.01	$321.70	$74K
Feb 12, 2026	Lisa Stevens - Officer	Grant or award	Restricted Share Unit (Right to Receive)	2,059	$0.00	-
Feb 13, 2026	Lisa Stevens - Officer	Option exercise	Restricted Share Unit (Right to Receive)	1,451	$0.00	-
Feb 13, 2026	Lisa Stevens - Officer	Option exercise	Restricted Share Unit (Right to Receive)	478	$0.00	-
Footnote F1 (price): Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the eighteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the… Full note on SEC EDGAR Footnote F4 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
Feb 12, 2026	Mindy F. Simon - Officer	Grant or award	Class A Ordinary Stock	5,550	-^{footnote F1}	-
Feb 12, 2026	Mindy F. Simon - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	2,378	$314.49	$748K
Feb 13, 2026	Mindy F. Simon - Officer	Option exercise	Class A Ordinary Stock	254	-^{footnote F3}	-
Feb 13, 2026	Mindy F. Simon - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	108.84	$321.70	$35K
Feb 12, 2026	Mindy F. Simon - Officer	Grant or award	Restricted Share Unit (Right to Receive)	1,113	$0.00	-
Feb 13, 2026	Mindy F. Simon - Officer	Option exercise	Restricted Share Unit (Right to Receive)	254	$0.00	-
Footnote F1 (price): Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the eighteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the… Full note on SEC EDGAR Footnote F3 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
Feb 13, 2026	Edmund Reese - Officer	Option exercise	Class A Ordinary Stock	598	-^{footnote F1}	-
Feb 13, 2026	Edmund Reese - Officer	Tax withholding / forfeiture	Class A Ordinary Stock	250.81	$321.70	$81K
Feb 12, 2026	Edmund Reese - Officer	Grant or award	Restricted Share Unit (Right to Receive)	2,337	$0.00	-
Feb 13, 2026	Edmund Reese - Officer	Option exercise	Restricted Share Unit (Right to Receive)	598	$0.00	-
Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

Recent AON Form 8-K filings

Read AON company news

Sep 22, 2026Item 1.01, 1.02, 2.03, 9.01

Read the filing on SEC EDGAR

Sep 17, 2026Item 8.01, 9.01

Read the filing on SEC EDGAR

Sep 11, 2026Item 8.01, 9.01

Read the filing on SEC EDGAR

Aug 31, 2026Item 1.01, 7.01, 9.01

Recent AON Form 144 notices of proposed sale

An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.

Filed	Filer	Relationship	Shares	Market value	Notice
Jul 28, 2026	-	-	-	-	View on EDGAR
Jul 17, 2026	-	-	-	-

AON insider trading FAQ

What is the latest insider trade for AON?

Aon plc (AON) had 3 insider filings in the last 90 days, with the most recent on 2026-09-04. The full record for AON runs to 54 Form 4 filings, the earliest from 2024-11-19. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying AON stock?

6 insider purchases of AON were filed in the last 90 days, totaling $6.55M.

How many insiders are selling AON stock?

6 insider sales of AON were filed in the last 90 days, totaling $1.44M.

Where can I see AON SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects AON Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Financials companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Sep 4, 2026 - Lester B. Knight view on EDGAR
Jul 30, 2026 - Darren Zeidel view on EDGAR
Jul 21, 2026 - Darren Zeidel view on EDGAR
Jul 9, 2026 - Darren Zeidel view on EDGAR
Jul 6, 2026 - Edmund Reese view on EDGAR
Jun 29, 2026 - Lester B. Knight view on EDGAR
Jun 29, 2026 - Jose Antonio Alvarez view on EDGAR
Jun 29, 2026 - Cheryl A. Francis view on EDGAR
Jun 29, 2026 - James G. Stavridis view on EDGAR

Related companies with recent insider activity

Learn more

How to read insider buying signals: What an open-market purchase by an insider can and cannot tell you.
Form 144 vs Form 4: A Form 144 announces a planned sale; the Form 4 reports it after it happens.
Insider activity in Financials: Where AON's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Open-market purchase

20,000

$6.55M

Open-market sale

3,850

$1.44M

Date

Insider

Transaction

Security

Price

Value

Sep 2, 2026

Lester B. Knight - Director

Open-market purchase

Class A Ordinary Stock

1,739

$325.63^{footnote F1}

$566K

Sep 2, 2026

Lester B. Knight - Director

Open-market purchase

Class A Ordinary Stock

5,097

$326.53^{footnote F2}

$1.66M

Sep 2, 2026

Lester B. Knight - Director

Open-market purchase

Class A Ordinary Stock

7,212

$327.52^{footnote F3}

$2.36M

Sep 2, 2026

Lester B. Knight - Director

Open-market purchase

Class A Ordinary Stock

4,145

$328.34^{footnote F4}

$1.36M

Sep 2, 2026

Lester B. Knight - Director

Open-market purchase

Class A Ordinary Stock

1,440

$329.69^{footnote F5}

$475K

Sep 2, 2026

Lester B. Knight - Director

Open-market purchase

Class A Ordinary Stock

367

$330.51^{footnote F6}

$121K

Footnote F1 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $325.03 to $326.02, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR
Footnote F2 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $326.03 to $327.02, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR
Footnote F3 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $327.04 to $328.03, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR
Footnote F4 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $328.04 to $329.03, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR
Footnote F5 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $329.08 to $330.07, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR
Footnote F6 (price): The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $330.09 to $330.88, inclusive. Full information regarding the number of shares purchased at each separate price is available upon… Full note on SEC EDGAR

Jul 28, 2026

Darren Zeidel - Officer

Open-market sale

Class A Ordinary Stock

700

$376.00^{footnote F1}

$263K

Jul 28, 2026

Darren Zeidel - Officer

Open-market sale

Class A Ordinary Stock

725

$378.00^{footnote F1}

$274K

Jul 28, 2026

Darren Zeidel - Officer

Open-market sale

Class A Ordinary Stock

475

$380.00^{footnote F1}

$181K

Footnote F1 (price): The transaction reported was effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 5, 2025.

Jul 17, 2026

Darren Zeidel - Officer

Open-market sale

Class A Ordinary Stock

625

$370.00^{footnote F1}

$231K

Jul 17, 2026

Darren Zeidel - Officer

Open-market sale

Class A Ordinary Stock

650

$372.00^{footnote F1}

$242K

Jul 17, 2026

Darren Zeidel - Officer

Open-market sale

Class A Ordinary Stock

675

$374.00^{footnote F1}

$252K

Footnote F1 (price): The transaction reported was effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 5, 2025.

Jul 7, 2026

Darren Zeidel - Officer

Open-market sale

Class A Ordinary Stock

600

$360.00^{footnote F1}

$216K

Footnote F1 (price): The transaction reported was effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 5, 2025.

Jul 1, 2026

Edmund Reese - Officer

Option exercise

Class A Ordinary Stock

3,975

-^{footnote F1}

Jul 1, 2026

Edmund Reese - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

2,198

$343.56

$755K

Jul 1, 2026

Edmund Reese - Officer

Option exercise

Restricted Share Unit (Right to Receive)

3,975

$0.00

Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

Jun 25, 2026

Lester B. Knight

Grant or award

Class A Ordinary Stock

1,488

-^{footnote F1}

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

Jose Antonio Alvarez

Tax withholding / forfeiture

Class A Ordinary Stock

372.47

$315.95

$118K

Jun 25, 2026

Jose Antonio Alvarez

Grant or award

Class A Ordinary Stock

776

-^{footnote F1}

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

Cheryl A. Francis

Tax withholding / forfeiture

Class A Ordinary Stock

186.24

$315.95

$59K

Jun 25, 2026

Cheryl A. Francis

Grant or award

Class A Ordinary Stock

776

-^{footnote F1}

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

James G. Stavridis

Tax withholding / forfeiture

Class A Ordinary Shares

186.24

$315.95

$59K

Jun 25, 2026

James G. Stavridis

Grant or award

Class A Ordinary Shares

776

-^{footnote F1}

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

Richard C. Notebaert

Tax withholding / forfeiture

Class A Ordinary Stock

186.24

$315.95

$59K

Jun 25, 2026

Richard C. Notebaert

Grant or award

Class A Ordinary Stock

776

-^{footnote F1}

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

Gloria Santona

Tax withholding / forfeiture

Class A Ordinary Stock

186.24

$315.95

$59K

Jun 25, 2026

Gloria Santona

Grant or award

Class A Ordinary Stock

776

-^{footnote F1}

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

Jeffrey C. Campbell

Tax withholding / forfeiture

Class A Ordinary Stock

186.24

$315.95

$59K

Jun 25, 2026

Jeffrey C. Campbell

Grant or award

Class A Ordinary Stock

776

-^{footnote F1}

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

Byron Spruell

Grant or award

Class A Ordinary Stock

776

-^{footnote F1}

Jun 25, 2026

Byron Spruell

Tax withholding / forfeiture

Class A Ordinary Stock

186.24

$315.95

$59K

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

Jin-Yong Cai

Grant or award

Class A Ordinary Stock

776

-^{footnote F1}

Jun 25, 2026

Jin-Yong Cai

Tax withholding / forfeiture

Class A Ordinary Stock

396.52

$315.95

$125K

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

Sarah G. Smith

Grant or award

Class A Ordinary Stock

776

-^{footnote F1}

Jun 25, 2026

Sarah G. Smith

Tax withholding / forfeiture

Class A Ordinary Stock

186.24

$315.95

$59K

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

Jo Ann Jenkins

Grant or award

Class A Ordinary Stock

776

-^{footnote F1}

Jun 25, 2026

Jo Ann Jenkins

Tax withholding / forfeiture

Class A Ordinary Stock

186.24

$315.95

$59K

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

Jun 25, 2026

Adriana Karaboutis

Grant or award

Class A Ordinary Stock

776

-^{footnote F1}

Jun 25, 2026

Adriana Karaboutis

Tax withholding / forfeiture

Class A Ordinary Stock

186.24

$315.95

$59K

Footnote F1 (price): Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

May 12, 2026

Richard C. Notebaert

Gift

Class A Ordinary Stock

1,438

$0.00

Mar 13, 2026

Anne Corona - Officer

Option exercise

Class A Ordinary Stock

193

-^{footnote F1}

Mar 13, 2026

Anne Corona - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

85.5

$321.41

$27K

Mar 13, 2026

Anne Corona - Officer

Option exercise

Class A Ordinary Stock

174

-^{footnote F1}

Mar 13, 2026

Anne Corona - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

77.08

$321.41

$25K

Mar 13, 2026

Anne Corona - Officer

Option exercise

Restricted Share Unit (Right to Receive)

193

$0.00

Mar 13, 2026

Anne Corona - Officer

Option exercise

Restricted Share Unit (Right to Receive)

174

$0.00

Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

Mar 13, 2026

Lori Goltermann - Officer

Option exercise

Class A Ordinary Stock

228

-^{footnote F1}

Mar 13, 2026

Lori Goltermann - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

99.18

$321.41

$32K

Mar 13, 2026

Lori Goltermann - Officer

Option exercise

Class A Ordinary Stock

290

-^{footnote F1}

Mar 13, 2026

Lori Goltermann - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

126.15

$321.41

$41K

Mar 13, 2026

Lori Goltermann - Officer

Option exercise

Restricted Share Unit (Right to Receive)

228

$0.00

Mar 13, 2026

Lori Goltermann - Officer

Option exercise

Restricted Share Unit (Right to Receive)

290

$0.00

Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

Mar 13, 2026

Andy Marcell - Officer

Option exercise

Class A Ordinary Stock

1,166

-^{footnote F1}

Mar 13, 2026

Andy Marcell - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

567.83

$321.41

$183K

Mar 13, 2026

Andy Marcell - Officer

Option exercise

Class A Ordinary Stock

464

-^{footnote F1}

Mar 13, 2026

Andy Marcell - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

225.96

$321.41

$73K

Mar 13, 2026

Andy Marcell - Officer

Option exercise

Restricted Share Unit (Right to Receive)

1,166

$0.00

Mar 13, 2026

Andy Marcell - Officer

Option exercise

Restricted Share Unit (Right to Receive)

464

$0.00

Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

Feb 26, 2026

Darren Zeidel - Officer

Open-market sale

Class A Ordinary Stock

4,300

$329.72^{footnote F1}

$1.42M

Footnote F1 (price): The price reported is a weighted average price. Shares were sold in a series of transactions within the same trading day at prices ranging from $329.68 to $330.015, inclusive. Full information regarding the number of shares sold at each separate price is available upon request… Full note on SEC EDGAR

Feb 19, 2026

Gregory C. Case - Officer

Gift

Class A Ordinary Stock

11,206

$0.00

Feb 19, 2026

Gregory C. Case - Officer

Gift

Class A Ordinary Stock

11,206

$0.00

Feb 19, 2026

Gregory C. Case - Officer

Gift

Class A Ordinary Stock

7,500

$0.00

Feb 19, 2026

Gregory C. Case - Officer

Gift

Class A Ordinary Stock

7,500

$0.00

Feb 19, 2026

Gregory C. Case - Officer

Gift

Class A Ordinary Stock

11,206

$0.00

Feb 19, 2026

Gregory C. Case - Officer

Gift

Class A Ordinary Stock

11,206

$0.00

Feb 18, 2026

Lisa Stevens - Officer

Gift

Class A Ordinary Stock

$0.00

Feb 17, 2026

Gregory C. Case - Officer

Gift

Class A Ordinary Stock

3,214

$0.00

Feb 17, 2026

Gregory C. Case - Officer

Gift

Class A Ordinary Stock

3,214

$0.00

Feb 17, 2026

Gregory C. Case - Officer

Gift

Class A Ordinary Stock

3,214

$0.00

Feb 17, 2026

Gregory C. Case - Officer

Gift

Class A Ordinary Stock

3,214

$0.00

Feb 17, 2026

Gregory C. Case - Officer

Option exercise

Class A Ordinary Stock

2,357

-^{footnote F1}

Feb 17, 2026

Gregory C. Case - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

1,002

$325.96

$327K

Feb 17, 2026

Gregory C. Case - Officer

Option exercise

Restricted Share Unit (Right to Receive)

2,357

$0.00

Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

Feb 17, 2026

Darren Zeidel - Officer

Open-market sale

Class A Ordinary Stock

5,040

$325.79^{footnote F1}

$1.64M

Footnote F1 (price): The transaction reported was effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 5, 2025.

Feb 12, 2026

Darren Zeidel - Officer

Grant or award

Class A Ordinary Stock

7,135

-^{footnote F1}

Feb 12, 2026

Darren Zeidel - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

2,696

$314.49

$848K

Feb 13, 2026

Darren Zeidel - Officer

Option exercise

Class A Ordinary Stock

871

-^{footnote F3}

Feb 13, 2026

Darren Zeidel - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

385.84

$321.70

$124K

Feb 13, 2026

Darren Zeidel - Officer

Option exercise

Class A Ordinary Stock

209

-^{footnote F3}

Feb 13, 2026

Darren Zeidel - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

92.59

$321.70

$30K

Feb 12, 2026

Darren Zeidel - Officer

Grant or award

Restricted Share Unit (Right to Receive)

1,113

$0.00

Feb 13, 2026

Darren Zeidel - Officer

Option exercise

Restricted Share Unit (Right to Receive)

871

$0.00

Feb 13, 2026

Darren Zeidel - Officer

Option exercise

Restricted Share Unit (Right to Receive)

209

$0.00

Footnote F1 (price): Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the eighteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the… Full note on SEC EDGAR
Footnote F3 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

Feb 12, 2026

Lisa Stevens - Officer

Grant or award

Class A Ordinary Stock

15,856

-^{footnote F1}

Feb 12, 2026

Lisa Stevens - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

7,568

$314.49

$2.38M

Feb 13, 2026

Lisa Stevens - Officer

Option exercise

Class A Ordinary Stock

1,451

-^{footnote F4}

Feb 13, 2026

Lisa Stevens - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

701.25

$321.70

$226K

Feb 13, 2026

Lisa Stevens - Officer

Option exercise

Class A Ordinary Stock

478

-^{footnote F4}

Feb 13, 2026

Lisa Stevens - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

231.01

$321.70

$74K

Feb 12, 2026

Lisa Stevens - Officer

Grant or award

Restricted Share Unit (Right to Receive)

2,059

$0.00

Feb 13, 2026

Lisa Stevens - Officer

Option exercise

Restricted Share Unit (Right to Receive)

1,451

$0.00

Feb 13, 2026

Lisa Stevens - Officer

Option exercise

Restricted Share Unit (Right to Receive)

478

$0.00

Footnote F1 (price): Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the eighteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the… Full note on SEC EDGAR
Footnote F4 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

Feb 12, 2026

Mindy F. Simon - Officer

Grant or award

Class A Ordinary Stock

5,550

-^{footnote F1}

Feb 12, 2026

Mindy F. Simon - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

2,378

$314.49

$748K

Feb 13, 2026

Mindy F. Simon - Officer

Option exercise

Class A Ordinary Stock

254

-^{footnote F3}

Feb 13, 2026

Mindy F. Simon - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

108.84

$321.70

$35K

Feb 12, 2026

Mindy F. Simon - Officer

Grant or award

Restricted Share Unit (Right to Receive)

1,113

$0.00

Feb 13, 2026

Mindy F. Simon - Officer

Option exercise

Restricted Share Unit (Right to Receive)

254

$0.00

Footnote F1 (price): Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the eighteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the… Full note on SEC EDGAR
Footnote F3 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

Feb 13, 2026

Edmund Reese - Officer

Option exercise

Class A Ordinary Stock

598

-^{footnote F1}

Feb 13, 2026

Edmund Reese - Officer

Tax withholding / forfeiture

Class A Ordinary Stock

250.81

$321.70

$81K

Feb 12, 2026

Edmund Reese - Officer

Grant or award

Restricted Share Unit (Right to Receive)

2,337

$0.00

Feb 13, 2026

Edmund Reese - Officer

Option exercise

Restricted Share Unit (Right to Receive)

598

$0.00

Footnote F1 (price): Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

Filed

Filer

Relationship

Market value

Notice

Jul 28, 2026

View on EDGAR

Jul 17, 2026