AON

SEC source: 0001209191-21-066475 · doc4.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,784

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: 0001209191-22-009512 · doc4.xml · nonDerivative · entry 3

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,152.3217

SEC source: 0001209191-21-064275 · doc4.xml · nonDerivative · entry 3

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90

SEC source: 0001209191-21-064275 · doc4.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,590

F1 · kind: Represents the transfer of shares previously reported as indirectly held by Reporting Person through a family LLC to being directly held by Reporting Person.

SEC source: 0001209191-21-064275 · doc4.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 3,536

F1 · kind: Represents the transfer of shares previously reported as indirectly held by Reporting Person through a family LLC to being directly held by Reporting Person.

F2 · ownership.nature: Represents shares held by a family LLC, for which Reporting Person is a Manager.

SEC source: 0001209191-21-057056 · doc4.xml · derivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 562

Underlying: Class A Ordinary Shares · 562 shares

Expires 2024-09-17

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 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 follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.

SEC source: 0001209191-22-008822 · doc5.xml · nonDerivative · entry 1

NOTEBAERT RICHARD C · CIK 0001112731 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,508

SEC source: 0001209191-21-052531 · doc4.xml · nonDerivative · entry 2

LOSH J MICHAEL · CIK 0001199190 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By grantor retained annuity trust

Disclosed balance after: 11,604

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 $279.60 to $279.75, 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: 0001209191-22-009512 · doc4.xml · nonDerivative · entry 2

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,150.3947

F1 · balance_after: Includes shares acquired under Aon employee stock purchase plan on June 30, 2021.

SEC source: 0001209191-21-052531 · doc4.xml · nonDerivative · entry 1

LOSH J MICHAEL · CIK 0001199190 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,205

SEC source: 0001209191-22-009526 · doc4.xml · nonDerivative · entry 1

Andersen Eric · CIK 0001697695 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,572.7353

F1 · balance_after: Includes shares acquired under Aon employee stock purchase plan on June 30, 2021.

SEC source: 0001209191-21-050308 · doc4.xml · nonDerivative · entry 4

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Marital Trust

Disclosed balance after: 15,000

F4 · 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 $264.39 to $264.67, 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: 0001209191-21-050308 · doc4.xml · nonDerivative · entry 3

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Marital Trust

Disclosed balance after: 13,685

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 $263.31 to $264.29, 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: 0001209191-21-050308 · doc4.xml · nonDerivative · entry 2

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Family Partnership

Disclosed balance after: 105,000

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 $264.17 to $264.77, 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: 0001209191-21-050308 · doc4.xml · nonDerivative · entry 1

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Family Partnership

Disclosed balance after: 102,900

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 $263.13 to $263.92, 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: 0001209191-21-049920 · doc4.xml · nonDerivative · entry 1

NOTEBAERT RICHARD C · CIK 0001112731 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,723

SEC source: 0001209191-21-043866 · doc4.xml · nonDerivative · entry 1

LOSH J MICHAEL · CIK 0001199190 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,705

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: 0001209191-21-043793 · doc4.xml · nonDerivative · entry 1

Spruell Byron · CIK 0001831278 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,372

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: 0001209191-21-043809 · doc4.xml · nonDerivative · entry 1

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,720

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: 0001209191-21-043765 · doc4.xml · nonDerivative · entry 1

MYERS RICHARD B · CIK 0001356702 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,618

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: 0001209191-21-043762 · doc4.xml · nonDerivative · entry 1

WOO CAROLYN Y · CIK 0001205211 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,427

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: 0001209191-21-043759 · doc4.xml · nonDerivative · entry 1

SANTONA GLORIA · CIK 0001179714 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,318

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: 0001209191-21-043751 · doc4.xml · nonDerivative · entry 2

Conti Fulvio · CIK 0001421899 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,389

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

SEC source: 0001209191-21-043751 · doc4.xml · nonDerivative · entry 1

Conti Fulvio · CIK 0001421899 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,562

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: 0001209191-21-043755 · doc4.xml · nonDerivative · entry 1

FRANCIS CHERYL A · CIK 0001197386 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,414

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: 0001209191-21-043747 · doc4.xml · nonDerivative · entry 1

CAMPBELL JEFFREY C · CIK 0001196907 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,741

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: 0001209191-21-043736 · doc4.xml · nonDerivative · entry 2

Cai Jin-Yong · CIK 0001682796 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,803

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

SEC source: 0001209191-21-043736 · doc4.xml · nonDerivative · entry 1

Cai Jin-Yong · CIK 0001682796 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,960

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: 0001209191-21-043725 · doc4.xml · nonDerivative · entry 1

NOTEBAERT RICHARD C · CIK 0001112731 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,518

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: 0001209191-21-035797 · doc4.xml · derivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 132

Underlying: Class A Ordinary Shares · 45 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 US$0.01 per share issued to the reporting person;

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

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

SEC source: 0001209191-21-035797 · doc4.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,430

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

SEC source: 0001209191-21-035797 · doc4.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,450

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: 0001209191-21-034882 · doc4.xml · derivative · entry 6

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 189 shares

Expires 2021-05-20

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 May 20, 2016 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 20% of the award vests on each of the first through fifth anniversary of the date of grant.

F5 · derivative.expiration_date: A restricted share unit award was granted on May 20, 2016 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 20% of the award vests on each of the first through fifth anniversary of the date of grant.

SEC source: 0001209191-21-034882 · doc4.xml · nonDerivative · entry 4

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,405

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

SEC source: 0001209191-21-034882 · doc4.xml · nonDerivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,489

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: 0001209191-21-034882 · doc4.xml · derivative · entry 5

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157

Underlying: Class A Ordinary Shares · 157 shares

Expires 2022-05-19

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 May 19, 2017 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 20% of the award vests on each of the first through fifth anniversary of the date of grant.

F4 · derivative.expiration_date: A restricted share unit award was granted on May 19, 2017 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 20% of the award vests on each of the first through fifth anniversary of the date of grant.

SEC source: 0001209191-21-034882 · doc4.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,300

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

SEC source: 0001209191-21-034882 · doc4.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,370

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: 0001209191-22-009512 · doc4.xml · nonDerivative · entry 1

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,107.554

SEC source: 0001209191-21-021532 · doc4.xml · derivative · entry 5

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 163 shares

Expires 2021-03-15

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.

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 US$0.01 per share issued to the reporting person.

F6 · derivative.exercise_date: A restricted share unit award was granted on March 15, 2018 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 March 15, 2018 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: 0001209191-21-021532 · doc4.xml · nonDerivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90

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

SEC source: 0001209191-21-021532 · doc4.xml · nonDerivative · entry 3

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 163

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: 0001209191-21-021513 · doc4.xml · derivative · entry 6

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 148

Underlying: Class A Ordinary Shares · 147 shares

Expires 2022-03-15

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 US$0.01 per share issued to the reporting person.

F5 · derivative.exercise_date: A restricted share unit award was granted on March 15, 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.

F5 · derivative.expiration_date: A restricted share unit award was granted on March 15, 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: 0001209191-21-021513 · doc4.xml · derivative · entry 5

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 155 shares

Expires 2021-03-15

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 US$0.01 per share issued to the reporting person.

F4 · derivative.exercise_date: A restricted share unit award was granted on March 15, 2018 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 March 15, 2018 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: 0001209191-21-021513 · doc4.xml · nonDerivative · entry 4

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,213

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: 0001209191-21-021513 · doc4.xml · nonDerivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,279

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: 0001209191-21-021513 · doc4.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,132

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: 0001209191-21-021513 · doc4.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,201

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: 0001209191-21-013889 · doc4.xml · derivative · entry 4

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,917

Underlying: Class A Ordinary Shares · 640 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 US$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: 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: 20% of the award vests on each of the first through fifth anniversary of the date of grant.

SEC source: 0001209191-21-013889 · doc4.xml · nonDerivative · entry 3

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,105.337

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