Insider trade

Aon plc (AON)Director bought ~$1.28M

Lester B Knight, Director at Aon plc, bought ~$1.28M of Aon plc shares.

~$1.28M
Approx. value · 4,000 sh @ $319.24: 143K
Holds after · shares reported

Traded: Feb 10, 2026
Filed: Feb 12, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

Dec 31, 2025Company filing · Form 8-K · Executive changeChanged a top executive or board member“On December 31, 2025, Aon plc (the “Company”) and Aon Corporation (“Aon Corp”) entered into an Amended and Restated Employment Agreement (the “Employment Agreement”) with Gregory C. Case, the Company’s President and Chief Executive Officer.”
Jan 6, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On January 6, 2026, Aon Corporation, an indirect, wholly owned subsidiary of Aon plc (Aon plc together with its subsidiaries, “Aon” or the “Company”), entered into a separation agreement with Mr. Andersen (the “Separation Agreement”), in connection with Mr. Andersen’s departure from the Company effective January 31, 2026 (the “Separation Date”).”
Jan 30, 2026Company filing · Form 8-K · ResultsReported its results
Feb 10, 2026 · this disclosureInsider · First insider buy since Aug 2024Director purchased ~$1.28M of AON shares in the open market

What came next

Feb 17, 2026InsiderOfficer sold ~$1.64M of AON shares in the open market
Feb 26, 2026InsiderOfficer sold ~$1.42M of AON shares in the open market
Mar 26, 20265% stakeThe Vanguard Group reported a passive stake (13G)
Apr 29, 20265% stakeVanguard Capital Management reported a passive stake (13G) of 7.3%
May 1, 2026Company filing · Form 8-K · ResultsReported its results

View the official recordSEC Form 4

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Aon plc

For Aon plc, OQRO holds 12 insider filings (SEC Form 4 or Form 144), 1 Congress trade report and 35 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its AON page.

Other recent filings by Lester B Knight, Director

The full history of Lester B Knight, Director is on the profile page.

How this filing works

Other disclosures at Aon plc

Everything OQRO holds on this company is on its AON page.

This is one filing. OQRO holds the rest

Insider trades filed with the SEC, stock trades disclosed by members of Congress, fund holdings from 13F filings and federal contract awards, each one in plain words next to its official filing. On this page it opens why the trade stands out, what the company did around that time, the price since, and every field of the form.

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