Case Gregory C

SEC source: 0001209191-23-009570 · doc4.xml · nonDerivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 425,620

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.

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: 0001209191-23-009570 · doc4.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 423,855

F1 · balance_after: On November 10, 2022, the GRAT returned 141,311 shares to the reporting person as an annuity payment. Also on November 10, 2022, the GRAT transferred 70,684 and 70,683 shares to trusts reported as indirectly owned by the reporting person. On November 29, 2022, the reporting person contributed 400,000 shares previously held as direct to a new GRAT.

SEC source: 0001209191-23-009570 · doc4.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 145,485

F1 · kind: On November 10, 2022, the GRAT returned 141,311 shares to the reporting person as an annuity payment. Also on November 10, 2022, the GRAT transferred 70,684 and 70,683 shares to trusts reported as indirectly owned by the reporting person. On November 29, 2022, the reporting person contributed 400,000 shares previously held as direct to a new GRAT.

F1 · balance_after: On November 10, 2022, the GRAT returned 141,311 shares to the reporting person as an annuity payment. Also on November 10, 2022, the GRAT transferred 70,684 and 70,683 shares to trusts reported as indirectly owned by the reporting person. On November 29, 2022, the reporting person contributed 400,000 shares previously held as direct to a new GRAT.

SEC source: 0001209191-23-009570 · doc4.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 145,486

F1 · kind: On November 10, 2022, the GRAT returned 141,311 shares to the reporting person as an annuity payment. Also on November 10, 2022, the GRAT transferred 70,684 and 70,683 shares to trusts reported as indirectly owned by the reporting person. On November 29, 2022, the reporting person contributed 400,000 shares previously held as direct to a new GRAT.

F1 · balance_after: On November 10, 2022, the GRAT returned 141,311 shares to the reporting person as an annuity payment. Also on November 10, 2022, the GRAT transferred 70,684 and 70,683 shares to trusts reported as indirectly owned by the reporting person. On November 29, 2022, the reporting person contributed 400,000 shares previously held as direct to a new GRAT.

SEC source: 0001209191-23-009570 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 0

F1 · kind: On November 10, 2022, the GRAT returned 141,311 shares to the reporting person as an annuity payment. Also on November 10, 2022, the GRAT transferred 70,684 and 70,683 shares to trusts reported as indirectly owned by the reporting person. On November 29, 2022, the reporting person contributed 400,000 shares previously held as direct to a new GRAT.

F1 · balance_after: On November 10, 2022, the GRAT returned 141,311 shares to the reporting person as an annuity payment. Also on November 10, 2022, the GRAT transferred 70,684 and 70,683 shares to trusts reported as indirectly owned by the reporting person. On November 29, 2022, the reporting person contributed 400,000 shares previously held as direct to a new GRAT.

SEC source: 0001209191-23-009570 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 70,683

F1 · kind: On November 10, 2022, the GRAT returned 141,311 shares to the reporting person as an annuity payment. Also on November 10, 2022, the GRAT transferred 70,684 and 70,683 shares to trusts reported as indirectly owned by the reporting person. On November 29, 2022, the reporting person contributed 400,000 shares previously held as direct to a new GRAT.

F1 · balance_after: On November 10, 2022, the GRAT returned 141,311 shares to the reporting person as an annuity payment. Also on November 10, 2022, the GRAT transferred 70,684 and 70,683 shares to trusts reported as indirectly owned by the reporting person. On November 29, 2022, the reporting person contributed 400,000 shares previously held as direct to a new GRAT.

SEC source: 0001209191-22-031337 · doc4.xml · nonDerivative · entry 1

Case Gregory C · CIK 0001322803 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,864

SEC source: 0001209191-22-011917 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 699,244

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

SEC source: 0001209191-22-011917 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 769,252

F1 · kind: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the fourteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the Organization and Compensation Committee of the Board of Directors on February 17, 2022, based on the Company's performance for the period from January 1, 2019 to December 31, 2021.

F1 · price: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the fourteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the Organization and Compensation Committee of the Board of Directors on February 17, 2022, based on the Company's performance for the period from January 1, 2019 to December 31, 2021.

SEC source: 0001209191-22-010929 · doc4.xml · derivative · entry 8

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 1,357 shares

Expires 2022-02-15

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 February 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.

F4 · derivative.expiration_date: A restricted share unit award was granted on February 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: 0001209191-22-010929 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 612,252

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

SEC source: 0001209191-22-010929 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 612,822

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: 0001209191-22-009977 · doc4.xml · derivative · entry 8

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,530

Underlying: Class A Ordinary Shares · 1,765 shares

Expires 2024-02-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of US$0.01 per share issued to the reporting person.

F5 · derivative.exercise_date: A restricted share unit award was granted on February 12, 2021 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

F5 · derivative.expiration_date: A restricted share unit award was granted on February 12, 2021 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

SEC source: 0001209191-22-009977 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 611,465

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

SEC source: 0001209191-22-009977 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 612,206

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.

F2 · balance_after: On November 8, 2021, the GRAT returned 117,322 shares to the reporting person as an annuity payment.

SEC source: 0001567619-21-009237 · doc1.xml · nonDerivative · entry 1

Case Gregory C · CIK 0001322803 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,230

SEC source: 0001209191-21-011023 · doc4.xml · derivative · entry 17

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 1,657 shares

Expires 2021-02-16

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.

F10 · 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.

F13 · derivative.exercise_date: A restricted share unit award was granted on February 16, 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.

F13 · derivative.expiration_date: A restricted share unit award was granted on February 16, 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: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 12

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 493,119

F7 · kind: Class A Ordinary Shares withheld by the issuer for payment of withholding taxes in connection with the vesting of the award.

SEC source: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 11

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 493,815

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.

F8 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

F8 · price: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

SEC source: 0001209191-21-011023 · doc4.xml · derivative · entry 16

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,357

Underlying: Class A Ordinary Shares · 1,357 shares

Expires 2022-02-15

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.

F10 · 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.

F12 · derivative.exercise_date: A restricted share unit award was granted on February 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.

F12 · derivative.expiration_date: A restricted share unit award was granted on February 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: 0001209191-21-011023 · doc4.xml · derivative · entry 15

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,295

Underlying: Class A Ordinary Shares · 5,295 shares

Expires 2024-02-12

F10 · 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.

F11 · 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.

F11 · 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: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 10

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 492,158

F7 · kind: Class A Ordinary Shares withheld by the issuer for payment of withholding taxes in connection with the vesting of the award.

SEC source: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 9

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 492,728

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.

F8 · kind: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

F8 · price: Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

SEC source: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 8

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 491,371

F7 · kind: Class A Ordinary Shares withheld by the issuer for payment of withholding taxes in connection with the vesting of the award.

SEC source: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 7

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 553,401

F6 · kind: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the thirteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the Organization and Compensation Committee of the Board of Directors on February 11, 2021, based on the Company's performance for the period from January 1, 2018 to December 31, 2020.

F6 · price: Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the thirteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the Organization and Compensation Committee of the Board of Directors on February 11, 2021, based on the Company's performance for the period from January 1, 2018 to December 31, 2020.

SEC source: 0001209191-21-011023 · doc4.xml · nonDerivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 400,000

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.

F5 · ownership.nature: Represents shares held by a grantor retained annuity trust, for which Reporting Person is trustee and sole beneficiary.

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: 0001209191-21-011023 · 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: 0000905148-20-000645 · form4.xml · nonDerivative · entry 1

Case Gregory C · CIK 0001322803 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,939

SEC source: 0001209191-20-010259 · doc4.xml · derivative · entry 11

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,714

Underlying: Class A Ordinary Shares · 1,356 shares

Expires 2022-02-15

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.

F7 · derivative.exercise_date: A restricted share unit award was granted on February 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.

F7 · derivative.expiration_date: A restricted share unit award was granted on February 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: 0001209191-20-010259 · doc4.xml · derivative · entry 10

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,657

Underlying: Class A Ordinary Shares · 1,656 shares

Expires 2021-02-16

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 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 February 16, 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 February 16, 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: 0001209191-20-010259 · doc4.xml · derivative · entry 9

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 2,978 shares

Expires 2020-02-17

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 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 February 17, 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 February 17, 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: 0001209191-20-010259 · doc4.xml · nonDerivative · entry 8

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 881,373

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: 0001209191-20-010259 · doc4.xml · nonDerivative · entry 7

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 881,950

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: 0001209191-20-010259 · doc4.xml · nonDerivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 880,594

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: 0001209191-20-010259 · doc4.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 881,299

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: 0001209191-20-010259 · doc4.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 879,643

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: 0001209191-20-010259 · doc4.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 880,910

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: 0001209191-20-019785 · doc4a.xml · derivative · entry 12

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,714

Underlying: Class A Ordinary Shares · 1,356 shares

Expires 2022-02-15

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 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.

F8 · derivative.exercise_date: A restricted share unit award was granted on February 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.

F8 · derivative.expiration_date: A restricted share unit award was granted on February 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: 0001209191-20-019785 · doc4a.xml · derivative · entry 11

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,657

Underlying: Class A Ordinary Shares · 1,656 shares

Expires 2021-02-16

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.

F5 · 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.

F7 · derivative.exercise_date: A restricted share unit award was granted on February 16, 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.

F7 · derivative.expiration_date: A restricted share unit award was granted on February 16, 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: 0001209191-20-019785 · doc4a.xml · derivative · entry 10

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 2,978 shares

Expires 2020-02-17

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.

F5 · 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 February 17, 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.

F6 · derivative.expiration_date: A restricted share unit award was granted on February 17, 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: 0001209191-20-019785 · doc4a.xml · nonDerivative · entry 8

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 881,373

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: 0001209191-20-019785 · doc4a.xml · nonDerivative · entry 7

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 881,950

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: 0001209191-20-019785 · doc4a.xml · nonDerivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 880,594

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: 0001209191-20-019785 · doc4a.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 881,299

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: 0001209191-20-019785 · doc4a.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 879,643

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: 0001209191-20-019785 · doc4a.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 880,910

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.