AON

SEC source: 0000950170-24-076779 · ownership.xml · nonDerivative · entry 2

CAMPBELL JEFFREY C · CIK 0001196907 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,546.846

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

SEC source: 0000950170-24-076779 · ownership.xml · nonDerivative · entry 1

CAMPBELL JEFFREY C · CIK 0001196907 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,729

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: 0000950170-24-076775 · ownership.xml · nonDerivative · entry 2

Cai Jin-Yong · CIK 0001682796 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,147.504

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

SEC source: 0000950170-24-076775 · ownership.xml · nonDerivative · entry 1

Cai Jin-Yong · CIK 0001682796 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,515

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: 0000950170-24-076758 · ownership.xml · nonDerivative · entry 2

Alvarez Jose Antonio · CIK 0001541177 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 535.612

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

SEC source: 0000950170-24-076758 · ownership.xml · nonDerivative · entry 1

Alvarez Jose Antonio · CIK 0001541177 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 899.92

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: 0000950170-24-063991 · ownership.xml · derivative · entry 6

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78

Underlying: Class A Ordinary Shares · 39 shares

Expires 2026-05-21

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.

F5 · derivative.exercise_date: A restricted share unit award was granted on May 21, 2021 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.

F5 · derivative.expiration_date: A restricted share unit award was granted on May 21, 2021 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: 0000950170-24-063991 · ownership.xml · derivative · entry 5

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51

Underlying: Class A Ordinary Shares · 52 shares

Expires 2025-05-21

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, 2020 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, 2020 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: 0000950170-24-063991 · ownership.xml · nonDerivative · entry 4

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,850.019

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

SEC source: 0000950170-24-063991 · ownership.xml · nonDerivative · entry 3

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,863.934

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: 0000950170-24-063991 · ownership.xml · nonDerivative · entry 2

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,824.934

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

SEC source: 0000950170-24-063991 · ownership.xml · nonDerivative · entry 1

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,843.487

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: 0000950170-24-063978 · 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: 0000950170-24-057329 · ownership.xml · nonDerivative · entry 1

NOTEBAERT RICHARD C · CIK 0001112731 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,200

SEC source: 0000950170-24-054638 · ownership.xml · nonDerivative · entry 6

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Marital Trust

Disclosed balance after: 55,000

F3 · price: The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $277.37 to $277.67, inclusive. Full information regarding the number of shares purchased at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.

SEC source: 0000950170-24-054638 · ownership.xml · nonDerivative · entry 5

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Marital Trust

Disclosed balance after: 53,891

F2 · price: The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $276.34 to $277.32, inclusive. Full information regarding the number of shares purchased at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.

SEC source: 0000950170-24-054638 · ownership.xml · nonDerivative · entry 4

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Marital Trust

Disclosed balance after: 51,465.5

F1 · price: The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $275.34 to $276.18, inclusive. Full information regarding the number of shares purchased at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.

SEC source: 0000950170-24-054638 · ownership.xml · nonDerivative · entry 3

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Family Partnership

Disclosed balance after: 139,000

F3 · price: The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $277.37 to $277.67, inclusive. Full information regarding the number of shares purchased at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.

SEC source: 0000950170-24-054638 · ownership.xml · nonDerivative · entry 2

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Family Partnership

Disclosed balance after: 137,891

F2 · price: The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $276.34 to $277.32, inclusive. Full information regarding the number of shares purchased at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.

SEC source: 0000950170-24-054638 · ownership.xml · nonDerivative · entry 1

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Family Partnership

Disclosed balance after: 135,465.5

F1 · price: The price reported is a weighted average price. Shares were purchased in a series of transactions within the same trading day at prices ranging from $275.34 to $276.18, inclusive. Full information regarding the number of shares purchased at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.

SEC source: 0000950170-24-033009 · 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 · 109 shares

Expires not disclosed

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, 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 March 15, 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: 0000950170-24-033009 · ownership.xml · nonDerivative · entry 2

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,791.487

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

SEC source: 0000950170-24-033009 · ownership.xml · nonDerivative · entry 1

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,829.179

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: 0000950170-24-028741 · ownership.xml · nonDerivative · entry 1

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,722.9028

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 $316.31 to 316.3101, inclusive. Full information regarding the number of shares sold at each separate price is available upon request by the the Commission staff, the issuer, or a security holder of the issuer.

SEC source: 0000950170-24-026219 · ownership.xml · nonDerivative · entry 2

Andersen Eric · CIK 0001697695 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 161,117.8684

SEC source: 0000950170-24-026219 · ownership.xml · nonDerivative · entry 1

Andersen Eric · CIK 0001697695 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 164,617.8684

SEC source: 0000950170-24-020180 · ownership.xml · nonDerivative · entry 4

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,038.0678

SEC source: 0000950170-24-020180 · ownership.xml · nonDerivative · entry 3

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,073.0678

SEC source: 0000950170-24-020185 · 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 · 232 shares

Expires 2024-02-22

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 22, 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 February 22, 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: 0000950170-24-020185 · ownership.xml · nonDerivative · entry 2

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,720.179

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

SEC source: 0000950170-24-020185 · ownership.xml · nonDerivative · entry 1

Slyfield Jillian · CIK 0001898032 · Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,800.403

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: 0000950170-24-020180 · ownership.xml · derivative · entry 5

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 639 shares

Expires 2024-02-22

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 22, 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 February 22, 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: 0000950170-24-020180 · ownership.xml · nonDerivative · entry 2

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,073.0678

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

SEC source: 0000950170-24-020180 · ownership.xml · nonDerivative · entry 1

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,396.9028

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: 0000950170-24-017366 · ownership.xml · derivative · entry 11

Davies Christa · CIK 0001419356 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,299

Underlying: Class A Ordinary Shares · 2,649 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: 0000950170-24-017366 · ownership.xml · derivative · entry 10

Davies Christa · CIK 0001419356 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 872

Underlying: Class A Ordinary Shares · 872 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: 0000950170-24-017366 · ownership.xml · nonDerivative · entry 9

Davies Christa · CIK 0001419356 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 161,705.96

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

SEC source: 0000950170-24-017366 · ownership.xml · nonDerivative · entry 8

Davies Christa · CIK 0001419356 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 162,748.308

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: 0000950170-24-017366 · ownership.xml · nonDerivative · entry 7

Davies Christa · CIK 0001419356 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 160,099.308

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

SEC source: 0000950170-24-017366 · ownership.xml · nonDerivative · entry 6

Davies Christa · CIK 0001419356 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 160,442.429

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: 0000950170-24-017366 · ownership.xml · nonDerivative · entry 5

Davies Christa · CIK 0001419356 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 159,570.429