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 Form 25 filings document exchange removal and registration withdrawal for maturing or withdrawn senior-note classes, while recurring filings provide formal disclosure on capital structure, governance and public-company reporting obligations.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 (AON) director Lester B. Knight reported a series of open-market purchases of Class A Ordinary Stock on September 2, 2026 through a family partnership, totaling 20,000 shares at weighted-average prices between about $325 and $331 per share. No Rule 10b5-1 trading plan is reported. Following these transactions, Knight is shown with 5,227 shares held directly and additional indirect holdings through his spouse and a personal revocable trust.
Aon plc (AON) announced a definitive agreement to acquire USI Advantage Corp. for a cash purchase price of $17.0 billion (net purchase price $16.7 billion after certain tax attributes). USI is a major U.S. middle‑market insurance broker with about $3.0 billion in annual revenue and more than 10,500 employees. Closing is expected in the fourth quarter of 2026, subject to regulatory approvals and other customary conditions.
Aon targets $395 million of net Adjusted EBITDA synergies, including $321 million net revenue synergies and $280 million cost synergies, expected to be substantially realized between closing and 2029. On this basis, USI’s synergized Adjusted EBITDA is estimated at $1.2 billion, implying a net purchase multiple of about 14.5x. The company expects the deal to be dilutive to adjusted EPS in 2027 and accretive in 2028 and thereafter.
Aon plans to fund the acquisition entirely with new debt across a range of maturities and aims to maintain its current investment‑grade ratings (Baa2/A-). Management plans to delever to a 2.8x–3.0x leverage objective within roughly 24 months of closing and does not expect near‑term share repurchases as it prioritizes debt repayment, while continuing a stable and growing dividend.
Aon plc (AON) disclosed the initial equity holdings of reporting person Nadin Virani, Interim CFO. The filing reports direct ownership of 1,014.475 Class A Ordinary Shares and two restricted share unit (RSU) awards that each convert into Class A Ordinary Shares on a 1-for-1 basis with a nominal value of $0.01 per share payable by the reporting person.
One RSU award covers 1,117 underlying shares vesting 50% on each of the first and second anniversaries of the May 21, 2025 grant date and is scheduled to convert by May 21, 2027. The other covers 893 underlying shares, vesting 20% annually over five years from May 21, 2025 and expiring on May 21, 2030.
Aon plc reported a leadership change in its finance organization. Edmund Reese transitioned from his role as Executive Vice President and Chief Financial Officer effective August 17, 2026, and will serve as a senior advisor from that date through August 16, 2027 under a letter agreement with Aon Corporation.
Aon appointed Nadin Virani, 49, as interim Chief Financial Officer effective the same date. Virani has served as Global Head of Corporate Planning and Analytics since January 2025, and previously held senior finance roles at Broadridge Financial Solutions and American Express. During his interim CFO service, his current annual base salary will be increased by $50,000 per month until the end of the month in which a permanent CFO assumes the role, and he will be eligible for an additional cash bonus equal to the total additional base salary earned, payable within 30 days after his interim term ends. He will continue to participate in Aon’s standard employee benefit plans.
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 Q2 2026 results with total revenue of $4.25 billion, up 2% year over year, and 5% organic revenue growth. Operating income rose to $915 million and operating margin expanded to 21.5%, while adjusted operating margin improved to 28.9% on adjusted operating income of $1.23 billion.
Diluted EPS declined 3% to $2.58, but adjusted EPS increased 9% to $3.81. Cash from operations was $556 million and free cash flow $483 million, down 30% and 34%, respectively, versus the prior-year quarter. The Risk Capital segment grew revenue 5% to $3.0 billion; Human Capital revenue decreased 4% to $1.24 billion.
Aon generated $986 million of operating cash flow and $846 million of free cash flow in the first half of 2026, up 5% and 4%, respectively. The company returned $775 million to shareholders in Q2, including $600 million of share repurchases, and reaffirmed 2026 guidance for mid-single-digit or greater organic growth, margin expansion and strong adjusted EPS and free cash flow growth.
Aon plc shareholder Darren E. Zeidel filed a notice covering the potential sale of up to 1,900 Class A shares held at Fidelity Brokerage Services LLC, with an aggregate market value of $717,750.00, to be sold on the NYSE on 07/28/2026.
The shares to be sold were acquired through restricted stock vesting and classified as compensation, including 1,255 shares vested on 02/16/2023, 437 on 02/16/2024, and 208 on 02/17/2024. The filing also reports sales during the past three months: 600 Class A shares on 07/07/2026 for $216,000.00 and 1,950 Class A shares on 07/17/2026 for $725,500.00.
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.
Darren E. Zeidel filed to sell up to 1,950 Class A shares of AON plc through Fidelity Brokerage Services on or about 07/17/2026, with an estimated aggregate sale price of $725,500.00 on the NYSE.
The notice also reports a prior sale of 600 Class A shares on 07/07/2026 for $216,000.00, and lists multiple restricted stock vesting events from 2023–2025 as the compensation source of the shares.