Zeidel Darren

SEC source: 0001193125-26-326365 · ownership.xml · nonDerivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,504.099

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: 0001193125-26-326365 · ownership.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,979.099

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: 0001193125-26-326365 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,704.099

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: 0001193125-26-310325 · ownership.xml · nonDerivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,404.099

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: 0001193125-26-310325 · ownership.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,079.099

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: 0001193125-26-310325 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,729.099

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: 0001193125-26-299870 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,354.099

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: 0001193125-26-085374 · 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: 0001193125-26-059633 · 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: 0001193125-26-055139 · 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: 0001193125-25-272328 · ownership.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,253.161

F2 · 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 $345.00 to $344.51, 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: 0001193125-25-272328 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,483.161

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 $344.00 to $344.99, 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: 0000950170-25-022611 · ownership.xml · derivative · entry 9

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 871

Underlying: Class A Ordinary Shares · 870 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 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.

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: 0000950170-25-022611 · 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 · 374 shares

Expires 2025-02-17

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.

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 17, 2022 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 17, 2022 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: 0000950170-25-022611 · ownership.xml · nonDerivative · entry 6

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,053.161

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

SEC source: 0000950170-25-022611 · ownership.xml · nonDerivative · entry 5

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,438.562

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: 0000950170-25-022611 · ownership.xml · nonDerivative · entry 4

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,568.562

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

SEC source: 0000950170-25-022611 · ownership.xml · nonDerivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,734.24

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: 0000950170-25-022611 · ownership.xml · derivative · entry 7

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 628

Underlying: Class A Ordinary Shares · 628 shares

Expires 2028-02-13

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: 0000950170-25-022611 · ownership.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,360.24

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

SEC source: 0000950170-25-022611 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,626.409

F1 · kind: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the seventeenth 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 13, 2025, based on the Company's performance for the period from January 1, 2022 to December 31, 2024.

F1 · price: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the seventeenth 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 13, 2025, based on the Company's performance for the period from January 1, 2022 to December 31, 2024.

SEC source: 0000950170-24-097068 · ownership.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,404.409

SEC source: 0000950170-24-097068 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,484.409

SEC source: 0000950170-24-087859 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 24,434.409

F1 · price: The transaction reported was effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on March 8, 2024.

SEC source: 0000950170-24-063978 · ownership.xml · derivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 44 shares

Expires 2024-05-21

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 May 21, 2019 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 20% of the award vests on each of the first through fifth anniversary of the date of grant.

F4 · derivative.expiration_date: A restricted share unit award was granted on May 21, 2019 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 20% of the award vests on each of the first through fifth anniversary of the date of grant.

SEC source: 0000950170-24-063978 · ownership.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,031.409

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

SEC source: 0000950170-24-063978 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,050.901

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: 0000950170-24-017368 · ownership.xml · derivative · entry 8

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,741

Underlying: Class A Ordinary Shares · 870 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: 0000950170-24-017368 · ownership.xml · derivative · entry 7

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 374

Underlying: Class A Ordinary Shares · 374 shares

Expires 2025-02-17

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.

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: A restricted share unit award was granted on February 17, 2022 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 17, 2022 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: 0000950170-24-017368 · ownership.xml · nonDerivative · entry 6

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,006.901

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

SEC source: 0000950170-24-017368 · ownership.xml · nonDerivative · entry 5

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,392.299

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: 0000950170-24-017368 · ownership.xml · nonDerivative · entry 4

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,522.299

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

SEC source: 0000950170-24-017368 · ownership.xml · nonDerivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,687.976

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: 0000950170-24-017368 · ownership.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,313.976

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

SEC source: 0000950170-24-017368 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,826.707

F1 · kind: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the sixteenth 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 15, 2024, based on the Company's performance for the period from January 1, 2021 to December 31, 2023.

F1 · price: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the sixteenth 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 15, 2024, based on the Company's performance for the period from January 1, 2021 to December 31, 2023.

SEC source: 0000950170-24-014760 · ownership.xml · derivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 458 shares

Expires 2024-02-11

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 11, 2021 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 11, 2021 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: 0000950170-24-014760 · ownership.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,716.707

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

SEC source: 0000950170-24-014760 · ownership.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,866

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: 0001209191-23-031685 · doc4.xml · derivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44

Underlying: Class A Ordinary Shares · 44 shares

Expires 2024-05-21

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 May 21, 2019 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 20% of the award vests on each of the first through fifth anniversary of the date of grant.

F4 · derivative.expiration_date: A restricted share unit award was granted on May 21, 2019 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 20% of the award vests on each of the first through fifth anniversary of the date of grant.

SEC source: 0001209191-23-031685 · doc4.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,408

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

SEC source: 0001209191-23-031685 · doc4.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,428

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: 0001209191-23-011407 · doc4.xml · derivative · entry 6

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 748

Underlying: Class A Ordinary Shares · 373 shares

Expires 2025-02-17

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.

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 17, 2022 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 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 17, 2022 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.