Aon Plc Form 4 Filings

Aon plc reported that General Counsel Darren Zeidel sold a total of 1,900 shares of Class A Ordinary Stock on 2026-07-28 in three transactions classified as sales in open market or private transactions, at prices of $376.0000, $378.0000, and $380.0000 per share. These sales were effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 5, 2025.

Aon plc reported that General Counsel Darren Zeidel sold a total of 1,950 Class A Ordinary shares on July 17, 2026, in three transactions at prices from $370 to $374 per share. The sales were effected under a Rule 10b5-1 trading plan entered into on November 5, 2025.

Aon plc General Counsel Darren Zeidel sold 600 shares of Class A Ordinary Stock at $360.00 per share in an open-market transaction. The trade occurred on July 7, 2026 under a Rule 10b5-1 trading plan entered into on November 5, 2025. Following the sale, he directly holds 15,354.099 shares.

Aon plc Chief Financial Officer Edmund Reese reported routine equity compensation activity involving restricted share units. On July 1, 2026, a restricted share unit award vested, converting into 3,975 Class A Ordinary Shares on a 1-for-1 basis under the Aon plc 2011 Incentive Compensation Plan.

In connection with this vesting, 2,198.112 Class A Ordinary Shares were withheld by Aon to cover tax obligations at a reference price of $343.56 per share, rather than sold in the open market. Following these transactions, Reese directly owns 3,900.969 Class A Ordinary Shares.

KNIGHT LESTER B reported acquisition or exercise transactions in this Form 4 filing.

Aon plc director Lester B. Knight reported an equity award of Class A Ordinary Shares. On 2026-06-25, he received 1,488 shares of Class A Ordinary Stock as a grant to a non-employee director at a nominal value of $0.01 per share paid to the issuer, resulting in 5,227 directly held shares.

The filing also lists indirect holdings of Class A Ordinary Stock held through a personal revocable trust, a family partnership, and his wife, reflecting additional ownership positions without showing new buy or sell transactions for those accounts.

Aon plc director Jose Antonio Alvarez reported routine equity compensation activity. On June 25, 2026, he received a grant of 776 Class A Ordinary Shares, with the footnotes stating he agreed to pay the nominal value of US $0.01 per share under Irish law.

On the same date, 372.469 Class A Ordinary Shares were withheld by Aon to cover taxes related to this award at a reference price of $315.95 per share. After these transactions, Alvarez directly owns 1,270.391 Class A Ordinary Shares. The filing reflects compensation and tax withholding rather than open‑market trading.

Aon plc director Cheryl A. Francis reported routine equity compensation activity involving Class A Ordinary Stock. She received an annual grant of 776.0000 Class A Ordinary Shares as a non-employee director, with a nominal value of $0.01 per share paid to the issuer in line with Irish law. On the same date, 186.2350 shares were withheld by Aon plc to cover taxes related to this award at a price of $315.9500 per share, which is a tax-withholding disposition rather than an open-market sale. Following these transactions, Francis directly holds 29,479.9700 Class A Ordinary Shares.

Aon plc director James G. Stavridis reported routine equity compensation activity. He received a grant of 776.0000 Class A Ordinary Shares as an annual award for non-employee directors, with a nominal value of US $0.01 per share paid to the issuer under Irish law.

The issuer withheld 186.2350 Class A Ordinary Shares at US $315.9500 per share to cover taxes related to the award, a tax-withholding disposition rather than an open-market sale. Following these transactions, he directly holds 1,563.6540 Class A Ordinary Shares and also has indirect holdings of 3,808.0000 and 1,043.0000 shares held by family-related trusts.

Aon plc director Richard C. Notebaert reported routine equity compensation activity. He received a grant of 776 Class A Ordinary Shares, described as the annual share grant to each non-employee director. Under Irish law, he agreed to pay the issuer the nominal value of US $0.01 per share.

On the same date, 186.235 Class A Ordinary Shares were withheld by the issuer to cover taxes related to the award, a tax-withholding disposition rather than an open-market sale. Following these transactions, he directly holds 28,327.735 Class A Ordinary Shares.

Aon plc director Gloria Santona reported routine equity compensation and related tax withholding in Class A Ordinary Stock. On June 25, 2026, she received a grant of 776 Class A Ordinary Shares, described as the annual award to each non-employee director, with a nominal value of $0.01 per share under Irish law.

On the same date, 186.235 shares were withheld by Aon for payment of taxes in connection with this award at a reference price of $315.95 per share. Following these direct transactions, Santona directly owned 22,461.735 Class A Ordinary Shares. Separately, 17,736 Class A Ordinary Shares were reported as held indirectly by a trust.

Aon plc director Jeffrey C. Campbell reported routine equity compensation activity involving Class A Ordinary Stock. On 2026-06-25, 186.235 shares were disposed of in a tax-withholding transaction at $315.95 per share to cover taxes tied to an equity award. On the same date, he acquired 776 shares as an annual share grant to non-employee directors, at a nominal value of $0.01 per share under Irish law. Following these transactions, Campbell directly holds 12,620.735 Class A Ordinary shares.

Aon plc director Byron Spruell reported routine equity compensation activity. He received a grant of 776 Class A Ordinary Shares as an annual award to non-employee directors, with a nominal value of US $0.01 per share under Irish law.

The company withheld 186.235 Class A Ordinary Shares to cover associated tax obligations at a price of $315.95 per share, which is a tax-withholding disposition rather than an open-market sale. Following these transactions, Spruell directly holds 6,376.735 Class A Ordinary Shares.

Aon plc director Jin-Yong Cai reported routine equity compensation activity. On Class A Ordinary Stock, 776 shares were granted as an annual award to a non-employee director, with the director agreeing under Irish law to pay the issuer a nominal value of US $0.01 per share. On the same date, 396.524 shares were withheld by Aon to cover tax obligations related to the award, a non-market transaction classified as a tax-withholding disposition. After these transactions, Cai directly owned a total of 7,844.852 Class A Ordinary shares.

Aon plc director Sarah G. Smith reported routine equity compensation and related tax withholding. She received a grant of 776 Class A Ordinary Shares as the annual award for non-employee directors, agreeing under Irish law to pay the issuer the nominal value of US $0.01 per share. To cover taxes on this award, 186.235 Class A Ordinary Shares were withheld by Aon at a price of $315.95 per share rather than sold on the open market. After these transactions, Smith holds 2,113.735 Class A Ordinary Shares directly and 13 additional shares indirectly through a trust.

Aon plc director Jo Ann Jenkins reported routine equity compensation activity. She received a grant of 776.0000 Class A Ordinary Shares as an annual award for non-employee directors, with a nominal value of US $0.01 per share paid to the issuer as required by Irish law.

To cover taxes on the award, 186.2350 Class A Ordinary Shares were withheld by Aon at a price of $315.9500 per share. After these transactions, Jenkins directly holds a total of 1,060.4470 Class A Ordinary Shares.

Aon plc director Adriana Karaboutis reported routine equity compensation activity. She received an award of 776 Class A Ordinary Shares as part of the annual grant to non-employee directors, agreeing under Irish law to pay the nominal value of US $0.01 per share.

The company withheld 186.235 Class A Ordinary Shares to cover related tax obligations, a non-market, tax-withholding disposition. Following these transactions, Karaboutis directly holds 2,791.970 Class A Ordinary Shares of Aon plc.

Aon plc director Richard C. Notebaert reported a bona fide gift of 1,438 shares of Class A Ordinary Stock. The transfer carried no sale price, indicating a personal gift rather than a market transaction. After the gift, he directly holds 27,737.97 shares, so he retains a substantial stake.

Aon plc Chief Commercial Officer Anne Corona reported the vesting and exercise of restricted share units into Class A Ordinary Shares. On March 13, 2026, RSU awards converted into 367 shares, reflecting scheduled vesting under Aon’s incentive plan on a 1-for-1 basis.

To cover tax obligations on the vesting, 162.577 shares were withheld by Aon at a reference price of $321.41 per share, rather than being sold in the open market. After these transactions, Corona directly holds 4,194.791 Class A Ordinary Shares of Aon.

Aon plc CEO, Regions & North America Lori Goltermann reported routine equity compensation activity involving restricted share units that vested into Class A Ordinary Shares. She exercised restricted share units to acquire 518 shares and had 225.324 shares withheld by Aon to cover tax obligations, a non-market disposition. After these transactions, she directly holds 6,795.447 Class A Ordinary Shares.

Aon plc executive Andy Marcell reported routine equity compensation activity involving restricted share units (RSUs). On March 13, 2026, RSU awards vested and were converted into a total of 1,630 Class A Ordinary Shares at a conversion price of $0.01 per share under Aon’s incentive plan.

To cover tax obligations related to the vesting, approximately 794 shares were withheld by Aon at a price of $321.41 per share, as described in the footnotes. Following these transactions, Marcell directly holds 8,819.57 Class A Ordinary Shares. No open-market purchases or sales were reported; the filing reflects compensation vesting and associated tax withholding.

Aon plc General Counsel Darren Zeidel reported an open-market sale of 4,300 shares of Class A Ordinary Stock at a weighted average price of $329.7171 per share. After this transaction, he directly owns 15,954.099 Aon shares. The sale was executed through multiple trades within a narrow intraday price range.

Aon plc director and CEO Gregory C. Case reported a series of bona fide gift transfers of Class A Ordinary Shares. On February 19, 2026, upon termination of a GRAT, he transferred 15,000 shares in two gifts of 7,500 shares each and 22,412 shares to two separate trusts, each receiving 11,206 shares.

These are non-cash, indirect dispositions classified as gifts, not open-market sales. After these transactions, he continues to hold a substantial direct stake of 933,708.898 Class A shares, along with additional indirect holdings through trusts and a GRAT.

Aon plc Chief Administrative Officer Lisa Stevens reported a small stock gift. On this Form 4, she made a bona fide gift transfer of 32 shares of Aon's Class A Ordinary Stock at a stated price of $0.00 per share, leaving her with 26,321.4907 shares of direct ownership after the transaction.

Aon plc President & CEO Gregory C. Case reported several equity transactions involving Class A Ordinary Shares on February 17, 2026. A restricted share unit award granted on February 17, 2023 vested, and 2,357 restricted share units converted into Class A Ordinary Shares on a 1-for-1 basis, with the nominal value of $0.01 per share paid in accordance with Irish law.

To cover withholding taxes tied to this vesting, 1,001.695 Class A shares were withheld by Aon at a price of $325.9600 per share, which is a tax-withholding disposition rather than an open-market sale. Case also reported several bona fide gifts of Class A shares, including both directly held stock and shares held indirectly "By Trust." After these transactions, he held 933,708.898 Class A shares directly, with additional indirect holdings reported through trusts and GRATs as of that date.

Aon plc General Counsel Darren Zeidel reported an open-market sale of 5,040 shares of Class A ordinary stock at $325.79 per share. After this transaction, he continues to hold 20,254.099 shares directly. The sale was effected under a pre-arranged Rule 10b5-1 trading plan entered into on November 5, 2025.

Aon plc General Counsel Darren Zeidel reported several equity award transactions in Class A ordinary shares and restricted share units. On February 12, 2026, he acquired 7,135 Class A shares from performance share unit settlements and 1,113 restricted share units, with related shares withheld to cover taxes.

On February 13, 2026, additional restricted share units vested and converted into 871 and 209 Class A shares, again paired with tax-withholding share dispositions. All restricted share units convert 1-for-1 into Class A shares under Aon’s 2011 Incentive Compensation Plan. After these transactions, Zeidel directly held 25,294.099 Class A ordinary shares and continued to hold restricted share units scheduled to vest over three years.

Aon plc’s Chief Administrative Officer Lisa Stevens reported multiple equity award transactions in February 2026. On February 12, 2026, she acquired 15,856 Class A Ordinary Shares upon settlement of performance share units and received a grant of 2,059 restricted share units.

Also on February 12, 7,568.408 shares were withheld at $314.49 per share to cover taxes. On February 13, 2026, Stevens converted 1,451 and 478 restricted share units into the same number of Class A shares, with an additional 701.247 and 231.011 shares withheld at $321.70 per share for taxes. She held 26,353.4907 Class A shares and 957 restricted share units directly afterward.

Aon plc Chief Operating Officer Mindy F. Simon reported equity compensation activity and related tax withholdings. On February 12, 2026, she acquired 5,550 Class A Ordinary Shares at no cost upon settlement of performance share units, while 2,378.1 shares were withheld at $314.49 per share to cover taxes.

She also received a grant of 1,113 restricted share units that vest in three equal annual installments under Aon’s 2011 Incentive Compensation Plan. On February 13, 2026, 254 restricted share units vested and converted 1-for-1 into Class A Ordinary Shares, and 108.836 shares were withheld at $321.70 per share for taxes.

After these transactions, Simon directly held 6,496.485 Class A Ordinary Shares and 1,113 newly granted restricted share units plus 508 remaining units from an earlier award.

Aon plc Chief Financial Officer Edmund Reese reported equity award activity. On February 12, 2026, he received a grant of 2,337 restricted share units, each convertible into one Class A Ordinary Share under Aon’s 2011 Incentive Compensation Plan.

On February 13, 2026, 598 restricted share units were converted into 598 Class A Ordinary Shares, and the company withheld 250.805 shares at $321.7 per share to cover taxes. Following these transactions, Reese directly owned 2,124.081 Class A Ordinary Shares and 1,196 restricted share units from the earlier award, plus the new 2,337-unit grant.

Aon plc Global CEO, Solution Lines Andy Marcell reported new equity awards and related tax withholding transactions. On February 12, 2026, he acquired 12,882 Class A Ordinary Shares issued upon settlement of performance share units tied to company performance from January 1, 2023 to December 31, 2025.

On the same date, 6,576.052 Class A Ordinary Shares were withheld by Aon at a price of $314.49 per share to cover taxes, leaving 7,983.356 Class A Ordinary Shares held directly. He also received two restricted share unit grants: 2,226 RSUs vesting in equal thirds on each of the first three anniversaries of grant, and 9,539 RSUs vesting 100% on December 31, 2030, each convertible into Class A Ordinary Shares on a 1‑for‑1 basis for a nominal $0.01 per share under Irish law.

Aon plc executive Lori Goltermann, CEO, Regions & North America, reported equity compensation activity on Class A Ordinary Shares. On February 12, 2026, she acquired 6,937 shares upon settlement of performance share units tied to company results from January 1, 2023 to December 31, 2025.

To cover related taxes, 2,713.338 shares were withheld at $314.49 per share, leaving 6,502.771 shares owned directly afterward. She also received a grant of 1,113 restricted share units, each converting 1-for-1 into Class A Ordinary Shares with vesting in three equal annual installments.

Aon plc Chief Commercial Officer Anne Corona reported equity compensation activity. On February 12, 2026, she acquired 3,171 Class A ordinary shares issued upon settlement of performance share unit awards tied to company performance from January 1, 2023 through December 31, 2025.

On the same date, 1,404.709 Class A ordinary shares were withheld by Aon to cover taxes related to the vesting, at a price of $314.49 per share, leaving her with 3,990.368 Class A ordinary shares held directly. She also received a grant of 835 restricted share units, which convert into Class A ordinary shares on a 1-for-1 basis and are scheduled to vest in three equal annual installments under Aon’s 2011 Incentive Compensation Plan.

Aon plc President & CEO Gregory Case, who is also a director, reported equity compensation activity in Class A Ordinary Shares. On February 12, 2026, he acquired 71,868 shares and an additional 4,589 shares through the settlement of performance share units granted under Aon’s Leadership Performance Program, based on company performance from January 1, 2023 to December 31, 2025. On the same date, 32,246.147 shares and 2,059.019 shares were delivered back to Aon at $314.49 per share to cover tax obligations tied to this vesting. After these transactions, he directly held 938,781.593 Class A shares and also reported indirect holdings through various trusts and grantor retained annuity trusts.

Aon plc director Lester B. Knight reported an indirect open-market purchase of Class A Ordinary Stock through a family partnership. On February 10, 2026, the family partnership bought 4,000 shares at a weighted average price of $319.2391 per share.

The filing notes that trades that day occurred between $319.00 and $319.47. After this transaction, the family partnership held 143,000 shares. The report also lists 3,739 shares held directly, 124,604 shares held by Knight’s wife, and 26,033 shares held in a personal revocable trust.

Aon plc (AON) director Lester Knight reported a stock gift under a Form 4 filing. On 12/05/2025, he transferred 7,878 Class A Ordinary Shares to a charitable foundation where he and his spouse serve as trustees, a transaction coded as a gift and priced at $0 per share.

After this transaction, he reported indirect beneficial ownership of 26,033 Class A Ordinary Shares through a personal revocable trust, 124,604 shares held indirectly through his wife, and 139,000 shares held indirectly through a family partnership, along with 3,739 shares directly held. The filing indicates it was made by one reporting person in his capacity as a director of Aon plc.

Aon plc Chief Commercial Officer Anne Corona reported routine equity compensation activity. On 11/21/2025, a restricted share unit award converted into 132 Class A Ordinary Shares upon vesting. These shares were issued under the Aon plc 2011 Incentive Compensation Plan, with the award originally granted on November 21, 2022 and vesting in three equal annual installments.

To cover taxes owed at vesting, 65.444 Class A Ordinary Shares were withheld by Aon at a price of $346.51 per share. After these transactions, Anne Corona beneficially owned 2,224.077 Class A Ordinary Shares directly. The restricted share units converted to shares on a 1-for-1 basis, with the reporting person agreeing to pay the nominal value of $0.01 per share in line with Irish law.

Aon plc executive Lori Goltermann, CEO, Regions & North America, reported equity transactions in company stock. On 11/21/2025, a restricted share unit award vested, converting 156 Class A Ordinary Shares to common stock. Of these, 68.093 shares were withheld by Aon to cover taxes related to the vesting at a price of $346.51 per share. Following these transactions, Goltermann directly beneficially owned 2,255.494 Class A Ordinary Shares. The restricted share units converted on a 1-for-1 basis under Aon’s 2011 Incentive Compensation Plan, with the award originally granted on November 21, 2022 and vesting in three equal annual installments.

Aon plc reported a routine equity compensation transaction by its Global CEO, Solution Lines. On 11/21/2025, the executive acquired 86 Class A Ordinary Shares through the vesting of a restricted share unit award and simultaneously had 41.881 shares withheld by the company to cover taxes at a price of $346.51 per share. After these transactions, the executive directly beneficially owned 1,677.408 Class A Ordinary Shares. The underlying restricted share unit award had been granted in 2022 and vests in three equal annual installments under Aon’s 2011 Incentive Compensation Plan.

Aon plc (AON) Chief Operating Officer Mindy Simon reported the vesting of a restricted share unit award on November 14, 2025. The award converted 1,970 restricted share units into Class A ordinary shares on a 1-for-1 basis. Of these shares, 606.213 Class A ordinary shares were withheld by Aon to cover taxes at a price of $350.13 per share. Following these transactions, Simon directly beneficially owns 3,179.421 Class A ordinary shares. The original restricted share unit grant, made on November 15, 2022 under the Aon plc 2011 Incentive Compensation Plan, vests in three equal annual installments.

Aon plc (AON) reported an insider transfer. On 11/12/2025, a director moved 17,736 Class A ordinary shares to a spousal lifetime access trust, coded “G,” at $0 per footnote.

Following the transfer, the reporting person held 21,871.97 shares directly and 17,736 shares indirectly via the trust.

Aon plc (AON) disclosed a Form 4 showing insider sales by General Counsel Darren Zeidel on 11/05/2025. He sold 7,570 Class A ordinary shares at a weighted average price of $344.42 and 1,230 shares at a weighted average price of $345.17.

Following these transactions, Zeidel beneficially owned 20,253.161 shares directly. Prices reflect multiple same‑day trades within reported ranges.