Neller Michael

SEC source: 0000950170-25-044637 · ownership.xml · derivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114

Underlying: Class A Ordinary Shares · 56 shares

Expires 2027-03-15

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 15, 2024 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 15, 2024 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: 0000950170-25-044637 · ownership.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,208.892

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

SEC source: 0000950170-25-044637 · ownership.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,233.7

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: 0000950170-25-022626 · ownership.xml · derivative · entry 7

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 146 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: 0000950170-25-022626 · ownership.xml · nonDerivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,177.7

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 3

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,221.6

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: 0000950170-25-022626 · 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: 0000950170-24-108130 · 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: 0000950170-24-033659 · ownership.xml · derivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 170

Underlying: Class A Ordinary Shares · 170 shares

Expires 2027-03-15

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: 0000950170-24-017357 · ownership.xml · derivative · entry 7

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 146

Underlying: Class A Ordinary Shares · 146 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: 0000950170-24-017357 · ownership.xml · nonDerivative · entry 5

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,346.025

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

SEC source: 0000950170-24-017357 · ownership.xml · nonDerivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,410.701

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: 0000950170-24-017357 · ownership.xml · nonDerivative · entry 3

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,264.701

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

SEC source: 0000950170-24-017357 · ownership.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,424.764

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: 0000950170-24-017357 · ownership.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,868.764

SEC source: 0000950170-24-014750 · 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 · 163 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: 0000950170-24-014750 · ownership.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,618.764

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

SEC source: 0000950170-24-014750 · ownership.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,675.161

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: 0001209191-23-049910 · doc4.xml · derivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 188

Underlying: Class A Ordinary Shares · 187 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: 0001209191-23-049910 · doc4.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,512.161

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

SEC source: 0001209191-23-049910 · doc4.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,595

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: 0001209191-23-011400 · doc4.xml · derivative · entry 7

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 292

Underlying: Class A Ordinary Shares · 146 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 US$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: 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: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001209191-23-011400 · doc4.xml · nonDerivative · entry 5

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,408

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

SEC source: 0001209191-23-011400 · doc4.xml · nonDerivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,473

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: 0001209191-23-011400 · doc4.xml · nonDerivative · entry 3

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,327

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

SEC source: 0001209191-23-011400 · doc4.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,044

F1 · kind: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the fifteenth 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 16, 2023, based on the Company's performance for the period from January 1, 2020 to December 31, 2022.

F1 · price: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the fifteenth 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 16, 2023, based on the Company's performance for the period from January 1, 2020 to December 31, 2022.

SEC source: 0001209191-23-011400 · doc4.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,216

SEC source: 0001209191-23-009528 · doc4.xml · derivative · entry 7

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 120 shares

Expires 2023-02-13

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 US$0.01 per share issued to the reporting person.

F5 · derivative.exercise_date: A restricted share unit award was granted on February 13, 2020 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.

F5 · derivative.expiration_date: A restricted share unit award was granted on February 13, 2020 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.

SEC source: 0001209191-23-009528 · doc4.xml · nonDerivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,216

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

SEC source: 0001209191-23-009528 · doc4.xml · nonDerivative · entry 3

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,258

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: 0001209191-23-009528 · doc4.xml · derivative · entry 6

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 163

Underlying: Class A Ordinary Shares · 163 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 US$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: 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: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001209191-23-009528 · doc4.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,138

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

SEC source: 0001209191-23-009528 · doc4.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,195

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: 0001209191-22-050744 · doc4.xml · derivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 375

Underlying: Class A Ordinary Shares · 187 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: 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: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.

SEC source: 0001209191-22-050744 · doc4.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,032

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

SEC source: 0001209191-22-050744 · doc4.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,115

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: 0001209191-22-045106 · doc4.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 2,636

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 $284.32 to $284.45, 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: 0001209191-22-012777 · doc4.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,928

SEC source: 0001209191-22-011850 · doc4.xml · derivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 438

Underlying: Class A Ordinary Shares · 438 shares

Expires 2025-02-17

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: The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan as follows: 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: The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan 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: 0001209191-22-011850 · doc4.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,178

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: 0001209191-22-011850 · doc4.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,553

F1 · kind: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the fourteenth 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 17, 2022, based on the Company's performance for the period from January 1, 2019 to December 31, 2021.

F1 · price: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the fourteenth 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 17, 2022, based on the Company's performance for the period from January 1, 2019 to December 31, 2021.

SEC source: 0001209191-22-009987 · doc4.xml · derivative · entry 10

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 0 shares

Expires 2022-02-14

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 US$0.01 per share issued to the reporting person.

F6 · derivative.exercise_date: A restricted share unit award was granted on February 14, 2019 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 14, 2019 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.

SEC source: 0001209191-22-009987 · doc4.xml · nonDerivative · entry 6

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 635

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: 0001209191-22-009987 · doc4.xml · nonDerivative · entry 5

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 712

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: 0001209191-22-009987 · doc4.xml · derivative · entry 9

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 326

Underlying: Class A Ordinary Shares · 326 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 US$0.01 per share issued to the reporting person.

F5 · 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: 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 11, 2021 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.

SEC source: 0001209191-22-009987 · doc4.xml · derivative · entry 8

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120

Underlying: Class A Ordinary Shares · 120 shares

Expires 2023-02-13

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 US$0.01 per share issued to the reporting person.

F4 · derivative.exercise_date: A restricted share unit award was granted on February 13, 2020 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.

F4 · derivative.expiration_date: A restricted share unit award was granted on February 13, 2020 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.