Aon plc

Last updated September 27, 2026

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Organization details

Legal name: Aon plc
Ownership: Public
Status: Active
Sector (GICS): Financials
SIC code: 6411 — Insurance Agents, Brokers & Service
Jurisdiction of incorporation: Ireland
Headquarters city: Dublin 2
Headquarters country: United States
Fiscal year end: December
Ticker symbol: AON
Primary stock exchange: NYSE

Identifiers

SEC CIK: 0000315293
EIN: 98-1539969
Wikidata ID: Q739518

Board of directors

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Adriana Karaboutis · Director
Since 2023
Byron Spruell · Director
Since 2023
Carolyn Y. Woo · Director
Since 2023
Cheryl A. Francis · Director
Since 2023
Fulvio Conti · Director
Since 2023
Gloria Santona · Director
Since 2023
Gregory C. Case · Director · President & CEO
Since 2023
James G. Stavridis · Director
Since 2024
Jeffrey C. Campbell · Director
Since 2023
Jin-Yong Cai · Director
Since 2023
Jo Ann Jenkins · Director
Since 2025
Jose Antonio Alvarez · Director
Since 2024
Lester B. Knight · Director
Since 2023
Richard C. Notebaert · Director
Since 2023
Sarah G. Smith · Director
Since 2023

Chief executives

Gregory C. Case · Chief Executive Officer

Dates unknown

Director election results

Annual meeting of June 26, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

6 of this board's directors also sit on 12 other boards. 2 are in the same sector.

Shared director Other board Same sector

American Water Works Company Inc.
via James G. Stavridis
Autoliv Inc.
via Adriana Karaboutis
Avnet Inc.
via Jo Ann Jenkins
Fortinet Inc.
via James G. Stavridis
General Mills Inc.
via Jo Ann Jenkins
HNI Corporation
via Cheryl A. Francis
Hexcel Corporation
via Jeffrey C. Campbell
Klarna Group plc Same sector
via Sarah G. Smith
Marathon Petroleum Corporation
via Jeffrey C. Campbell
Morningstar Inc. Same sector
via Cheryl A. Francis
Perrigo Company plc
via Adriana Karaboutis
Via Transportation Inc.
via Sarah G. Smith

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $7,826,648; 7 purchases by 1 insider
Sold, last 12 months: $4,719,028; 9 sales by 1 insider

Date	Insider	Transaction	Shares	Price	Value
Sep 2, 2026	Lester B. Knight Director	Open-market purchase	+1,739	$325.63	$566,271
Sep 2, 2026	Lester B. Knight Director	Open-market purchase	+5,097	$326.53	$1,664,323
Sep 2, 2026	Lester B. Knight Director	Open-market purchase	+7,212	$327.52	$2,362,074
Sep 2, 2026	Lester B. Knight Director	Open-market purchase	+4,145	$328.34	$1,360,969
Sep 2, 2026	Lester B. Knight Director	Open-market purchase	+1,440	$329.69	$474,754
Sep 2, 2026	Lester B. Knight Director	Open-market purchase	+367	$330.51	$121,297
Jul 28, 2026	Zeidel Darren Officer (General Counsel)	Open-market sale	−700	$376.00	$263,200
Jul 28, 2026	Zeidel Darren Officer (General Counsel)	Open-market sale	−725	$378.00	$274,050
Jul 28, 2026	Zeidel Darren Officer (General Counsel)	Open-market sale	−475	$380.00	$180,500
Jul 17, 2026	Zeidel Darren Officer (General Counsel)	Open-market sale	−625	$370.00	$231,250
Jul 17, 2026	Zeidel Darren Officer (General Counsel)	Open-market sale	−650	$372.00	$241,800
Jul 17, 2026	Zeidel Darren Officer (General Counsel)	Open-market sale	−675	$374.00	$252,450
Jul 7, 2026	Zeidel Darren Officer (General Counsel)	Open-market sale	−600	$360.00	$216,000
Jul 1, 2026	Edmund Reese Officer (Chief Financial Officer)	Option exercise	+3,975	—	—
Jul 1, 2026	Edmund Reese Officer (Chief Financial Officer)	Shares withheld for tax	−2,198	$343.56	$755,183

Peers

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Questions about Aon plc

Who is the CEO of Aon plc?

Gregory C. Case is Aon plc's Chief Executive Officer.

How many directors are on Aon plc's board?

Aon plc's board has 15 directors: Adriana Karaboutis, Byron Spruell, Carolyn Y. Woo, Cheryl A. Francis, Fulvio Conti, Gloria Santona, Gregory C. Case, James G. Stavridis, Jeffrey C. Campbell, Jin-Yong Cai and 5 others.

Are Aon plc insiders buying or selling shares?

Over the last 12 months, Aon plc insiders bought $7.8 million of shares in 7 purchases and sold $4.7 million of shares in 9 sales on the open market, as reported to the SEC on Forms 4 and 5.

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