AON

SEC source: 0001193125-26-110806 · ownership.xml · nonDerivative · entry 2

Goltermann Lori · CIK 0002062798 · CEO, Regions & North America

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,631.594

F2 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-110806 · ownership.xml · nonDerivative · entry 1

Goltermann Lori · CIK 0002062798 · CEO, Regions & North America

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,730.771

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

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

SEC source: 0001193125-26-110782 · ownership.xml · derivative · entry 6

Marcell Andy · CIK 0002076043 · Global CEO, Solution Lines

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 928

Underlying: Class A Ordinary Shares · 464 shares

Expires 2028-03-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F5 · derivative.exercise_date: A restricted share unit award was granted on March 14, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

F5 · derivative.expiration_date: A restricted share unit award was granted on March 14, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001193125-26-110782 · ownership.xml · derivative · entry 5

Marcell Andy · CIK 0002076043 · Global CEO, Solution Lines

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 1,166 shares

Expires 2026-03-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F4 · derivative.exercise_date: A restricted share unit award was granted on March 23, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

F4 · derivative.expiration_date: A restricted share unit award was granted on March 23, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001193125-26-110782 · ownership.xml · nonDerivative · entry 4

Marcell Andy · CIK 0002076043 · Global CEO, Solution Lines

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,819.57

F2 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-110782 · ownership.xml · nonDerivative · entry 3

Marcell Andy · CIK 0002076043 · Global CEO, Solution Lines

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,045.531

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

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

SEC source: 0001193125-26-110782 · ownership.xml · nonDerivative · entry 2

Marcell Andy · CIK 0002076043 · Global CEO, Solution Lines

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,581.531

F2 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-110782 · ownership.xml · nonDerivative · entry 1

Marcell Andy · CIK 0002076043 · Global CEO, Solution Lines

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,149.356

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

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

SEC source: 0001193125-26-085374 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,954.099

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 by the Commission staff, the issuer, or a security holder of the issuer.

SEC source: 0001193125-26-061585 · ownership.xml · nonDerivative · entry 6

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 175,169

F2 · balance_after: Upon termination of the GRAT on February 19, 2026, the reporting person transferred 22,412 shares to two separate trusts by gift, each of which acquired 11,206 shares.

SEC source: 0001193125-26-061585 · ownership.xml · nonDerivative · entry 5

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 175,170

F2 · balance_after: Upon termination of the GRAT on February 19, 2026, the reporting person transferred 22,412 shares to two separate trusts by gift, each of which acquired 11,206 shares.

SEC source: 0001193125-26-061585 · ownership.xml · nonDerivative · entry 4

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By GRAT

Disclosed balance after: 0

F2 · balance_after: Upon termination of the GRAT on February 19, 2026, the reporting person transferred 22,412 shares to two separate trusts by gift, each of which acquired 11,206 shares.

SEC source: 0001193125-26-061585 · ownership.xml · nonDerivative · entry 3

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By GRAT

Disclosed balance after: 11,206

F2 · balance_after: Upon termination of the GRAT on February 19, 2026, the reporting person transferred 22,412 shares to two separate trusts by gift, each of which acquired 11,206 shares.

SEC source: 0001193125-26-061585 · ownership.xml · nonDerivative · entry 2

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By GRAT

Disclosed balance after: 22,412

F1 · balance_after: Upon termination of the GRAT on February 19, 2026, the reporting person transferred 15,000 shares in two separate transactions by gift, each involving the disposition of 7,500 shares.

SEC source: 0001193125-26-061585 · ownership.xml · nonDerivative · entry 1

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By GRAT

Disclosed balance after: 29,912

F1 · balance_after: Upon termination of the GRAT on February 19, 2026, the reporting person transferred 15,000 shares in two separate transactions by gift, each involving the disposition of 7,500 shares.

SEC source: 0001193125-26-059648 · ownership.xml · nonDerivative · entry 1

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,321.4907

SEC source: 0001193125-26-059645 · ownership.xml · derivative · entry 11

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 2,357 shares

Expires 2026-02-17

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F4 · derivative.exercise_date: A restricted share unit award was granted on February 17, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

F4 · derivative.expiration_date: A restricted share unit award was granted on February 17, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001193125-26-059645 · ownership.xml · nonDerivative · entry 6

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 132,243

SEC source: 0001193125-26-059645 · ownership.xml · nonDerivative · entry 5

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 132,243

SEC source: 0001193125-26-059645 · ownership.xml · nonDerivative · entry 4

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 933,708.898

SEC source: 0001193125-26-059645 · ownership.xml · nonDerivative · entry 3

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 936,922.898

SEC source: 0001193125-26-059645 · ownership.xml · nonDerivative · entry 2

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 940,136.898

F2 · kind: Class A Ordinary Shares withheld by the issuer for payment of withholding taxes in connection with the vesting of the award.

SEC source: 0001193125-26-059645 · ownership.xml · nonDerivative · entry 1

Case Gregory C · CIK 0001322803 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 941,138.593

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

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

SEC source: 0001193125-26-059633 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,254.099

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.

SEC source: 0001193125-26-055139 · ownership.xml · derivative · entry 9

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 419

Underlying: Class A Ordinary Shares · 209 shares

Expires 2028-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F7 · derivative.exercise_date: A restricted share unit award was granted on February 13, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

F7 · derivative.expiration_date: A restricted share unit award was granted on February 13, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001193125-26-055139 · ownership.xml · derivative · entry 8

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 871 shares

Expires 2026-02-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F6 · derivative.exercise_date: A restricted share unit award was granted on February 16, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

F6 · derivative.expiration_date: A restricted share unit award was granted on February 16, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001193125-26-055139 · ownership.xml · nonDerivative · entry 6

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,294.099

F2 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-055139 · ownership.xml · nonDerivative · entry 5

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,386.684

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

F3 · price: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

SEC source: 0001193125-26-055139 · ownership.xml · nonDerivative · entry 4

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,177.684

F2 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-055139 · ownership.xml · nonDerivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,563.525

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

F3 · price: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

SEC source: 0001193125-26-055112 · ownership.xml · derivative · entry 6

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 508

Underlying: Class A Ordinary Shares · 254 shares

Expires 2028-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F6 · derivative.exercise_date: A restricted share unit award was granted on February 13, 2025, and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

F6 · derivative.expiration_date: A restricted share unit award was granted on February 13, 2025, and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001193125-26-055112 · ownership.xml · nonDerivative · entry 4

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,496.485

F2 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-055112 · ownership.xml · nonDerivative · entry 3

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,605.321

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

F3 · price: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

SEC source: 0001193125-26-055125 · ownership.xml · derivative · entry 9

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 957

Underlying: Class A Ordinary Shares · 478 shares

Expires 2028-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F8 · derivative.exercise_date: A restricted share unit award was granted on February 13, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

F8 · derivative.expiration_date: A restricted share unit award was granted on February 13, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001193125-26-055125 · ownership.xml · derivative · entry 8

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 1,451 shares

Expires 2026-02-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F7 · derivative.exercise_date: A restricted share unit award was granted on February 16, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

F7 · derivative.expiration_date: A restricted share unit award was granted on February 16, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001193125-26-055125 · ownership.xml · nonDerivative · entry 6

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,353.4907

F3 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-055125 · ownership.xml · nonDerivative · entry 5

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,584.5017

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

F4 · price: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

SEC source: 0001193125-26-055125 · ownership.xml · nonDerivative · entry 4

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,106.5017

F3 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-055125 · ownership.xml · nonDerivative · entry 3

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,807.7487

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

F4 · price: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

SEC source: 0001193125-26-055101 · ownership.xml · derivative · entry 4

Reese Edmund · CIK 0001833903 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,196

Underlying: Class A Ordinary Shares · 598 shares

Expires 2028-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F5 · derivative.exercise_date: A restricted share unit award was granted on February 13, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

F5 · derivative.expiration_date: A restricted share unit award was granted on February 13, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001193125-26-055101 · ownership.xml · nonDerivative · entry 2

Reese Edmund · CIK 0001833903 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,124.081

F2 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-055101 · ownership.xml · nonDerivative · entry 1

Reese Edmund · CIK 0001833903 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,374.886

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

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

SEC source: 0001193125-26-055139 · ownership.xml · derivative · entry 7

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,113

Underlying: Class A Ordinary Shares · 1,113 shares

Expires 2029-02-12

F4 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F5 · derivative.exercise_date: The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated, as follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.

F5 · derivative.expiration_date: The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated, as follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.

SEC source: 0001193125-26-055139 · ownership.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,692.525

F2 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-055139 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,388.161

F1 · kind: 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 Organization and Compensation Committee of the Board of Directors on February 12, 2026, based on the Company's performance for the period from January 1, 2023 to December 31, 2025.

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 Organization and Compensation Committee of the Board of Directors on February 12, 2026, based on the Company's performance for the period from January 1, 2023 to December 31, 2025.

SEC source: 0001193125-26-055112 · ownership.xml · derivative · entry 5

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,113

Underlying: Class A Ordinary Shares · 1,113 shares

Expires 2029-02-12

F4 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F5 · derivative.exercise_date: The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated, as follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.

F5 · derivative.expiration_date: The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated, as follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.

SEC source: 0001193125-26-055112 · ownership.xml · nonDerivative · entry 2

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,351.321

F2 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0001193125-26-055112 · ownership.xml · nonDerivative · entry 1

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,729.421

F1 · kind: 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 Organization and Compensation Committee of the Board of Directors on February 12, 2026, based on the Company's performance for the period from January 1, 2023 to December 31, 2025.

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 Organization and Compensation Committee of the Board of Directors on February 12, 2026, based on the Company's performance for the period from January 1, 2023 to December 31, 2025.

SEC source: 0001193125-26-055125 · ownership.xml · derivative · entry 7

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,059

Underlying: Class A Ordinary Shares · 2,059 shares

Expires 2029-02-12

F5 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

F6 · derivative.exercise_date: The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated, as follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.

F6 · derivative.expiration_date: The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated, as follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.

SEC source: 0001193125-26-055125 · ownership.xml · nonDerivative · entry 2

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,356.7487

F3 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.