Lisa Stevens - 12 Feb 2026 Form 4 Insider Report for Aon plc (AON)

Role
Chief Administrative Officer
Signature
/s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Lisa Stevens
Issuer symbol
AON
Transactions as of
12 Feb 2026
Net transactions value
-$2,680,096
Form type
4
Filing time
17 Feb 2026, 17:20:50 UTC
Previous filing
24 Feb 2025
Next filing
19 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Stevens Lisa Chief Administrative Officer 200 EAST RANDOLPH ST., CHICAGO /s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Lisa Stevens 17 Feb 2026 0001792850

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AON Class A Ordinary Stock Award +15,856 +93% 32,925 12 Feb 2026 Direct F1, F2
transaction AON Class A Ordinary Stock Tax liability $2,380,189 -7,568 -23% $314.49 25,357 12 Feb 2026 Direct F3
transaction AON Class A Ordinary Stock Options Exercise +1,451 +5.7% 26,808 13 Feb 2026 Direct F4
transaction AON Class A Ordinary Stock Tax liability $225,591 -701 -2.6% $321.70 26,107 13 Feb 2026 Direct F3
transaction AON Class A Ordinary Stock Options Exercise +478 +1.8% 26,585 13 Feb 2026 Direct F4
transaction AON Class A Ordinary Stock Tax liability $74,316 -231 -0.87% $321.70 26,353 13 Feb 2026 Direct F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction AON Restricted Share Unit (Right to Receive) Award $0 +2,059 $0.000000 2,059 12 Feb 2026 Class A Ordinary Shares 2,059 Direct F5, F6
transaction AON Restricted Share Unit (Right to Receive) Options Exercise $0 -1,451 -100% $0.000000 0 13 Feb 2026 Class A Ordinary Shares 1,451 Direct F5, F7
transaction AON Restricted Share Unit (Right to Receive) Options Exercise $0 -478 -33% $0.000000 957 13 Feb 2026 Class A Ordinary Shares 478 Direct F5, F8
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the eighteenth 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 12, 2026, based on the Company's performance for the period from January 1, 2023 to December 31, 2025.
F2 Includes shares acquired under the Aon employee stock purchase plan on June 30, 2025 and December 31, 2025.
F3 Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.
F4 Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
F5 The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.
F6 The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated, as follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.
F7 A restricted share unit award was granted on February 16, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.
F8 A restricted share unit award was granted on February 13, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.