AON

SEC source: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 413,373

F4 · kind: Represents an exempt transfer (under Rule 16a-13) of shares previously reported as directly held by Reporting Person to a grantor retained annuity trust.

F4 · price: Represents an exempt transfer (under Rule 16a-13) of shares previously reported as directly held by Reporting Person to a grantor retained annuity trust.

SEC source: 0001209191-20-057494 · doc4.xml · nonDerivative · entry 2

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Marital Trust

Disclosed balance after: 10,000

SEC source: 0001209191-20-057494 · doc4.xml · nonDerivative · entry 1

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Marital Trust

Disclosed balance after: 9,700

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 $185.90 to $186.83, 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.

F2 · balance_after: Does not include 55,000 shares previously reported as indirectly owned in trust which shares were transferred on July 8, 2020 to a trust for which the reporting person is not a trustee.

SEC source: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust B

Disclosed balance after: 122,000

F2 · kind: Represents the transfer of shares directly held by Reporting Person to a trust.

F3 · ownership.nature: Represents shares held by a trust for which an immediate family member serves as trustee. Includes 88,000 shares previously reported as being indirectly held "By Trust".

SEC source: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 813,373

F2 · kind: Represents the transfer of shares directly held by Reporting Person to a trust.

SEC source: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust A

Disclosed balance after: 122,000

F2 · kind: Represents the transfer of shares directly held by Reporting Person to a trust.

F3 · ownership.nature: Represents shares held by a trust for which an immediate family member serves as trustee. Includes 88,000 shares previously reported as being indirectly held "By Trust".

SEC source: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 847,373

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · kind: Represents the transfer of shares directly held by Reporting Person to a trust.

SEC source: 0001209191-20-049572 · doc4.xml · derivative · entry 3

Goland Anthony R · CIK 0001669783 · Chief Innovation Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 1,107 shares

Expires 2020-09-01

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 September 1, 2015 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan as follows: 20% of the award vests on each of the first through fifth anniversaries of the date of the grant.

F5 · derivative.expiration_date: A restricted share unit award was granted on September 1, 2015 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan as follows: 20% of the award vests on each of the first through fifth anniversaries of the date of the grant.

SEC source: 0001209191-20-049572 · doc4.xml · nonDerivative · entry 2

Goland Anthony R · CIK 0001669783 · Chief Innovation Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,388

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

SEC source: 0001209191-20-049572 · doc4.xml · nonDerivative · entry 1

Goland Anthony R · CIK 0001669783 · Chief Innovation Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,864

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: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

F2 · price: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

SEC source: 0001209191-21-011017 · doc4.xml · nonDerivative · entry 1

Stevens Lisa · CIK 0001792850 · Chief People Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 409.908

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

SEC source: 0001209191-20-045850 · doc4.xml · nonDerivative · entry 1

NOTEBAERT RICHARD C · CIK 0001112731 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,721

SEC source: 0001209191-20-038628 · doc4.xml · nonDerivative · entry 1

WOO CAROLYN Y · CIK 0001205211 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,630

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: 0001209191-20-038626 · doc4.xml · nonDerivative · entry 1

SANTONA GLORIA · CIK 0001179714 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,521

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · 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.

F2 · 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: 0001209191-20-038623 · doc4.xml · nonDerivative · entry 1

NOTEBAERT RICHARD C · CIK 0001112731 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,352

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · 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.

F2 · 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: 0001209191-20-038621 · doc4.xml · nonDerivative · entry 1

MYERS RICHARD B · CIK 0001356702 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,821

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · 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.

F2 · 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: 0001209191-20-038616 · doc4.xml · nonDerivative · entry 1

LOSH J MICHAEL · CIK 0001199190 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,309

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · 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.

F2 · 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: 0001209191-20-038608 · doc4.xml · nonDerivative · entry 1

FRANCIS CHERYL A · CIK 0001197386 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,617

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · 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.

F2 · 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: 0001209191-20-038604 · doc4.xml · nonDerivative · entry 1

Conti Fulvio · CIK 0001421899 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,765

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · 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.

F2 · 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: 0001209191-20-038597 · doc4.xml · nonDerivative · entry 1

CAMPBELL JEFFREY C · CIK 0001196907 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,944

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · 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.

F2 · 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: 0001209191-20-038591 · doc4.xml · nonDerivative · entry 1

Cai Jin-Yong · CIK 0001682796 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,163

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · 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.

F2 · 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: 0001209191-20-038584 · doc4.xml · nonDerivative · entry 1

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,147

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: 0001209191-20-033232 · doc4.xml · nonDerivative · entry 2

Andersen Eric · CIK 0001697695 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 101,424.136

SEC source: 0001209191-20-033232 · doc4.xml · nonDerivative · entry 1

Andersen Eric · CIK 0001697695 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,814.136

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

SEC source: 0001209191-20-032989 · doc4.xml · nonDerivative · entry 1

WOO CAROLYN Y · CIK 0001205211 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,687

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders

F2 · price: The price reported is a weighted average price. Shares were sold in a series of transactions within the same trading day at prices ranging from $197.790 to $197.845, 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: 0001209191-20-032164 · doc4.xml · derivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 177

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: 0001209191-20-032164 · doc4.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,001

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: 0001209191-20-032164 · doc4.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,021

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: 0001209191-20-031846 · doc4.xml · derivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 189

Underlying: Class A Ordinary Shares · 190 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.

F4 · 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.

F4 · 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: 0001209191-20-031846 · doc4.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,976

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: 0001209191-20-031846 · doc4.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,061

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: 0001209191-20-031411 · doc4.xml · derivative · entry 3

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 314

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.

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 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.

F5 · 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: 0001209191-20-031411 · doc4.xml · nonDerivative · entry 2

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,871

F3 · 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: 0001209191-20-031411 · doc4.xml · nonDerivative · entry 1

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,941

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: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

F2 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

F2 · price: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

SEC source: 0001209191-20-030253 · doc4.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,459

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders.

SEC source: 0001209191-20-029768 · doc4.xml · nonDerivative · entry 2

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Marital Trust

Disclosed balance after: 55,000

SEC source: 0001209191-20-029768 · doc4.xml · nonDerivative · entry 1

KNIGHT LESTER B · CIK 0001023262 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Family Partnership

Disclosed balance after: 100,000

F1 · kind: On April 1, 2020, Aon plc, an Irish public limited company (the "Company"), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales ("Aon UK"), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders

SEC source: 0001209191-20-019801 · doc4.xml · nonDerivative · entry 5

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,209

F3 · kind: The transaction reported was effected pursuant to a trading plan entered into on November 7, 2019 meeting the requirements of Rule 10b5-1.

SEC source: 0001209191-20-019801 · doc4.xml · derivative · entry 7

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 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.

F4 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with U.K. 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: 0001209191-20-019801 · doc4.xml · derivative · entry 6

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 152 shares

Expires 2020-03-15

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.

F4 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with U.K. 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, 2017 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, 2017 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: 0001209191-20-019801 · doc4.xml · nonDerivative · entry 4

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,459

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: 0001209191-20-019801 · doc4.xml · nonDerivative · entry 3

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,532

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: 0001209191-20-019801 · doc4.xml · nonDerivative · entry 2

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,369

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: 0001209191-20-019801 · doc4.xml · nonDerivative · entry 1

Neller Michael · CIK 0001732938 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,437

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: 0001209191-20-019781 · doc4.xml · derivative · entry 9

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 295

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 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.

F6 · 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.

F6 · 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: 0001209191-20-019781 · doc4.xml · derivative · entry 8

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 155

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 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.

F5 · 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.

F5 · 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: 0001209191-20-019781 · doc4.xml · derivative · entry 7

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 190 shares

Expires 2020-03-15

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 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.exercise_date: A restricted share unit award was granted on March 15, 2017 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, 2017 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: 0001209191-20-019781 · doc4.xml · nonDerivative · entry 6

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,784

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: 0001209191-20-019781 · doc4.xml · nonDerivative · entry 5

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,850

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: 0001209191-20-019781 · doc4.xml · nonDerivative · entry 4

Zeidel Darren · CIK 0001782945 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,703

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