Welcome to our dedicated page for Aon plc SEC filings (Ticker: AON), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Aon plc filings document the regulatory record of an Ireland-domiciled public company with Class A ordinary shares listed on the New York Stock Exchange. Its Form 8-K reports cover material events and securities information, including registered share classes, senior notes and guarantees associated with Aon plc, Aon Corporation, Aon Global Holdings plc and Aon North America, Inc.
Proxy materials describe board governance, shareholder voting matters, executive compensation and pay-versus-performance disclosures. Form 25 filings document exchange removal and registration withdrawal for maturing or withdrawn senior-note classes, while recurring filings provide formal disclosure on capital structure, governance and public-company reporting obligations.
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 notice under Rule 144 reports a planned sale of 5,040 Class A shares by Darren E. Zeidel, dated 02/17/2026, with an aggregate sale amount shown as $1,641,981.60.
The filing also lists previously vested restricted shares from 02/13/2020 (1,601 shares) and 02/17/2022 (2,699 shares) in the securities-to-be-sold section.
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.