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Public ownership evidence

Aon plc Class A (AON) Ownership Disclosures

Read AON insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-09-042026-09-02KNIGHT LESTER BP367Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-02 and its public availability date is 2026-09-04. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code P: a purchase. A purchase code is only one eligibility check. Confirm reporting-owner role, amendment lineage and coverage before treating it as a strategy input.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent Form 4 activity

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2026-09-042026-09-02KNIGHT LESTER BP367Not reported
2026-09-042026-09-02KNIGHT LESTER BP1,440Not reported
2026-09-042026-09-02KNIGHT LESTER BP4,145Not reported
2026-09-042026-09-02KNIGHT LESTER BP7,212Not reported
2026-09-042026-09-02KNIGHT LESTER BP5,097Not reported
2026-09-042026-09-02KNIGHT LESTER BP1,739Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-06-302026-08-29120$39,803None
Cornerstone Financial Management LLC2026-03-312026-08-29106$34,215None
Cornerstone Financial Management LLC2025-12-312026-08-29106$37,405None
B. Riley Wealth Advisors, Inc.2025-03-312026-08-29636$253,702None
OPTIMIZE FINANCIAL INC.2026-06-302026-08-281,394$462,376None
Advisors Asset Management, Inc.2021-12-312026-08-282,228$669,648None
Advisors Asset Management, Inc.2022-12-312026-08-283,258$977,856None
Advisors Asset Management, Inc.2020-06-302026-08-281,495$287,937None
Advisors Asset Management, Inc.2022-06-302026-08-283,021$815,000None
Advisors Asset Management, Inc.2021-09-302026-08-281,588$454,000None
Corient Private Wealth LP2026-06-302026-08-2810,160$3,370,014None
Corient Private Wealth LP2026-06-302026-08-2862,998$20,895,595None
Principia Wealth Advisory, LLC2026-06-302026-08-2719$6,302None
Principia Wealth Advisory, LLC2026-03-312026-08-2713$4,196None
Advisors Asset Management, Inc.2024-03-312026-08-271,939$647,083None
Advisors Asset Management, Inc.2025-03-312026-08-27512$204,334None
Advisors Asset Management, Inc.2022-09-302026-08-273,262$874,000None
Advisors Asset Management, Inc.2020-12-312026-08-271,103$233,000None
Advisors Asset Management, Inc.2022-03-312026-08-272,999$976,564None
Advisors Asset Management, Inc.2023-06-302026-08-273,719$1,283,799None
Advisors Asset Management, Inc.2023-09-302026-08-272,996$971,363None
Advisors Asset Management, Inc.2023-03-312026-08-273,684$1,161,528None
Advisors Asset Management, Inc.2021-03-312026-08-27890$204,798None
Advisors Asset Management, Inc.2021-06-302026-08-27989$236,000None
Advisors Asset Management, Inc.2020-09-302026-08-271,347$277,886None
Advisors Asset Management, Inc.2025-09-302026-08-27424$151,190None
Advisors Asset Management, Inc.2023-12-312026-08-272,751$800,596None
Dakota Wealth Management2025-09-302026-08-271,866$665,254None
Dakota Wealth Management2025-12-312026-08-271,982$699,362None
Dakota Wealth Management2026-03-312026-08-271,019$329,016None
Groupe la Francaise2026-06-302026-08-26327$108,463None
Advisors Asset Management, Inc.2025-06-302026-08-25435$155,191None
CYBER HORNET ETFs LLC2026-06-302026-08-25581$192,712None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25306,798$101,761,829None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25101,761,829$306,798,000None
Advisors Asset Management, Inc.2024-09-302026-08-221,331$460,513None
Advisors Asset Management, Inc.2024-06-302026-08-221,760$516,701None
Advisors Asset Management, Inc.2024-12-312026-08-221,106$397,231None
Advisors Asset Management, Inc.2025-12-312026-08-22379$133,742None
Assenagon Asset Management S.A.2026-06-302026-08-22188,821$62,630,037None
CLIFFORD SWAN INVESTMENT COUNSEL LLC2026-06-302026-08-2125,107$8,327,741None
CLIFFORD SWAN INVESTMENT COUNSEL LLC2026-06-302026-08-213,500$1,160,915None
Kingsview Wealth Management, LLC2026-06-302026-08-202,756$913,986None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2052,099$17,280,735None
Beacon Pointe Advisors, LLC2026-06-302026-08-193,449$1,144,142None
Ensign Peak Advisors, Inc2026-03-312026-08-19223,178$72,037,395None
Ensign Peak Advisors, Inc2025-12-312026-08-19206,485$72,864,427None
Ensign Peak Advisors, Inc2025-09-302026-08-19230,883$82,328,260None
PIN OAK INVESTMENT ADVISORS INC2026-06-302026-08-1945$15,000None
Strive Financial Group ,LLC2026-06-302026-08-1819$6,302None

90-day public filing window, up to 50 source positions.

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.