AON

SEC source: 0000950170-25-022635 · ownership.xml · nonDerivative · entry 1

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,523.2297

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.

F2 · balance_after: Includes shares acquired under the Aon employee stock purchase plan on December 31, 2024.

SEC source: 0000950170-25-022658 · ownership.xml · nonDerivative · entry 4

Case Gregory C · CIK 0001322803 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 471,148.237

F4 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0000950170-25-022658 · ownership.xml · nonDerivative · entry 3

Case Gregory C · CIK 0001322803 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 474,142.691

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: 0000950170-25-022658 · ownership.xml · nonDerivative · entry 2

Case Gregory C · CIK 0001322803 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 467,514.691

F4 · kind: Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

SEC source: 0000950170-25-022658 · ownership.xml · nonDerivative · entry 1

Case Gregory C · CIK 0001322803 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 505,163.576

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.

F2 · balance_after: On February 7, 2025 the GRAT returned 186,029 shares to the reporting person as an annuity payment.

F3 · balance_after: On August 5, 2024, the reporting person contributed 136,740 shares previously held as direct to a new GRAT.

SEC source: 0000950170-25-022631 · ownership.xml · derivative · entry 7

Andersen Eric · CIK 0001697695 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,242

Underlying: Class A Ordinary Shares · 2,242 shares

Expires 2028-02-13

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: 0000950170-25-022631 · ownership.xml · nonDerivative · entry 2

Andersen Eric · CIK 0001697695 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,393.8493

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

SEC source: 0000950170-25-022631 · ownership.xml · nonDerivative · entry 1

Andersen Eric · CIK 0001697695 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 189,440.1953

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.

F2 · balance_after: Includes shares acquired under the Aon employee stock purchase plan on June 28, 2024 and December 31, 2024.

SEC source: 0000950170-25-022626 · ownership.xml · derivative · entry 6

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 319

Underlying: Class A Ordinary Shares · 319 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: 0000950170-25-022626 · ownership.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,075.6

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

SEC source: 0000950170-25-022626 · ownership.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,763.743

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: 0000950170-25-022620 · ownership.xml · derivative · entry 1

Reese Edmund · CIK 0001833903 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,794

Underlying: Class A Ordinary Shares · 1,794 shares

Expires 2028-02-13

F1 · 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.

F2 · 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.

F2 · 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: 0000950170-25-022619 · ownership.xml · derivative · entry 1

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 762

Underlying: Class A Ordinary Shares · 762 shares

Expires 2028-02-13

F1 · 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.

F2 · 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.

F2 · 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 · 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: 0000950170-24-132235 · ownership.xml · nonDerivative · entry 1

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,815.634

SEC source: 0000950170-24-131897 · ownership.xml · nonDerivative · entry 1

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,076.8358

SEC source: 0000950170-24-128844 · ownership.xml · derivative · entry 3

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,970

Underlying: Class A Ordinary Shares · 1,970 shares

Expires 2025-11-15

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 US$0.01 per share issued to the reporting person.

F4 · derivative.exercise_date: A restricted share unit award was granted on November 15, 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.

F4 · derivative.expiration_date: A restricted share unit award was granted on November 15, 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: 0000950170-24-128844 · ownership.xml · nonDerivative · entry 2

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,465.634

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

SEC source: 0000950170-24-128844 · ownership.xml · nonDerivative · entry 1

Simon Mindy F. · CIK 0001925598 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,339.306

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: 0000950170-24-108130 · ownership.xml · derivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 188 shares

Expires 2024-09-17

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 US$0.01 per share issued to the reporting person.

F4 · derivative.exercise_date: A restricted share unit award was granted on September 17, 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 the grant.

F4 · derivative.expiration_date: A restricted share unit award was granted on September 17, 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 the grant.

SEC source: 0000950170-24-108130 · ownership.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,450.743

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

SEC source: 0000950170-24-108130 · ownership.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,534.025

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: 0000950170-24-108123 · ownership.xml · derivative · entry 3

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 93 shares

Expires 2024-09-17

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 US$0.01 per share issued to the reporting person.

F4 · derivative.exercise_date: A restricted share unit award was granted on September 17, 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 the grant.

F4 · derivative.expiration_date: A restricted share unit award was granted on September 17, 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 the grant.

SEC source: 0000950170-24-108123 · ownership.xml · nonDerivative · entry 2

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,909.837

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

SEC source: 0000950170-24-108123 · ownership.xml · nonDerivative · entry 1

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,943.019

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: 0000950170-24-107268 · ownership.xml · nonDerivative · entry 2

STAVRIDIS JAMES G. · CIK 0001661859 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 303.53

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

SEC source: 0000950170-24-107268 · ownership.xml · nonDerivative · entry 1

STAVRIDIS JAMES G. · CIK 0001661859 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 568

F1 · kind: Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In connection with the election of Admiral James Stavridis as a director of Aon plc effective August 15, 2024, the Board of Directors granted fully vested Aon plc Class A Ordinary Shares to Admiral Stavridis to reflect pro-ration for the period of service from August 15, 2024 through June 27, 2025. 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.

F1 · price: Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In connection with the election of Admiral James Stavridis as a director of Aon plc effective August 15, 2024, the Board of Directors granted fully vested Aon plc Class A Ordinary Shares to Admiral Stavridis to reflect pro-ration for the period of service from August 15, 2024 through June 27, 2025. 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.

SEC source: 0000950170-24-101846 · ownership.xml · nonDerivative · entry 1

Spruell Byron · CIK 0001831278 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,302.846

SEC source: 0000950170-24-097074 · ownership.xml · nonDerivative · entry 1

Stevens Lisa · CIK 0001792850 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,351.8358

F1 · balance_after: Includes shares acquired under the Aon employee stock purchase plan on June 28, 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: 0000950170-24-093940 · ownership.xml · nonDerivative · entry 1

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Marital Trust

Disclosed balance after: 0

F1 · kind: On August 6, 2024, the marital trust was dissolved and 55,000 shares were distributed for no consideration to the beneficiary.

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: 0000950170-24-076821 · ownership.xml · nonDerivative · entry 1

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,466

F1 · kind: 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.

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.

SEC source: 0000950170-24-076815 · ownership.xml · nonDerivative · entry 2

Spruell Byron · CIK 0001831278 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,577.846

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

SEC source: 0000950170-24-076815 · ownership.xml · nonDerivative · entry 1

Spruell Byron · CIK 0001831278 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,760

F1 · kind: 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.

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.

SEC source: 0000950170-24-076813 · ownership.xml · nonDerivative · entry 2

SMITH SARAH G · CIK 0001090335 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,039.846

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

SEC source: 0000950170-24-076813 · ownership.xml · nonDerivative · entry 1

SMITH SARAH G · CIK 0001090335 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,222

F1 · kind: 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.

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.

SEC source: 0000950170-24-076806 · ownership.xml · nonDerivative · entry 2

SANTONA GLORIA · CIK 0001179714 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,123.846

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

SEC source: 0000950170-24-076806 · ownership.xml · nonDerivative · entry 1

SANTONA GLORIA · CIK 0001179714 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,306

F1 · kind: 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.

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.

SEC source: 0000950170-24-076798 · ownership.xml · nonDerivative · entry 2

NOTEBAERT RICHARD C · CIK 0001112731 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,776.846

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

SEC source: 0000950170-24-076798 · ownership.xml · nonDerivative · entry 1

NOTEBAERT RICHARD C · CIK 0001112731 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,959

F1 · kind: 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.

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.

SEC source: 0000950170-24-076791 · ownership.xml · nonDerivative · entry 2

Karaboutis Adriana · CIK 0001619963 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,531.846

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

SEC source: 0000950170-24-076791 · ownership.xml · nonDerivative · entry 1

Karaboutis Adriana · CIK 0001619963 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,714

F1 · kind: 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.

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.

SEC source: 0000950170-24-076787 · ownership.xml · nonDerivative · entry 2

FRANCIS CHERYL A · CIK 0001197386 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,219.846

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

SEC source: 0000950170-24-076787 · ownership.xml · nonDerivative · entry 1

FRANCIS CHERYL A · CIK 0001197386 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,402

F1 · kind: 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.

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.

SEC source: 0000950170-24-076784 · ownership.xml · nonDerivative · entry 2

Conti Fulvio · CIK 0001421899 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,861.692

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

SEC source: 0000950170-24-076784 · ownership.xml · nonDerivative · entry 1

Conti Fulvio · CIK 0001421899 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,226

F1 · kind: 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.

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.