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AON research notebook

Read the disclosures. Follow the relationships. Keep the dates in view.

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Filing timeline

Download filings CSV

SEC submissions · retrieved 2026-10-23 · 8022 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. 8-K · Current report

    Report date 2026-09-18 · 0001193125-26-397203 · Items 1.01,1.02,2.03,9.01

  2. 8-K · Current report

    Report date 2026-09-14 · 0001193125-26-394533 · Items 8.01,9.01

  3. 8-K · Current report

    Report date 2026-09-11 · 0001193125-26-388699 · Items 8.01,9.01

  4. 4 · Ownership change

    Report date 2026-09-02 · 0001193125-26-382419

  5. 8-K · Current report

    Report date 2026-08-30 · 0001193125-26-375328 · Items 1.01,7.01,9.01

  6. 8-K · Current report

    Report date 2026-08-17 · 0001193125-26-354083 · Items 5.02,9.01

  7. 4 · Ownership change

    Report date 2026-07-28 · 0001193125-26-326365

  8. 10-Q · Quarterly report

    Report date 2026-06-30 · 0001628280-26-050610

  9. 8-K · Current report

    Report date 2026-07-29 · 0001628280-26-050367 · Items 2.02,9.01

  10. 4 · Ownership change

    Report date 2026-07-17 · 0001193125-26-310325

  11. 4 · Ownership change

    Report date 2026-07-07 · 0001193125-26-299870

  12. 4 · Ownership change

    Report date 2026-07-01 · 0001193125-26-296512

  13. 8-K · Current report

    Report date 2026-06-26 · 0001193125-26-292736 · Items 5.02,5.07,8.01,9.01

  14. 4 · Ownership change

    Report date 2026-06-25 · 0001193125-26-288868

  15. 4 · Ownership change

    Report date 2026-06-25 · 0001193125-26-288866

  16. 4 · Ownership change

    Report date 2026-06-25 · 0001193125-26-288831

  17. 10-Q · Quarterly report

    Report date 2026-03-31 · 0001628280-26-029322

  18. 8-K · Current report

    Report date 2026-05-01 · 0001628280-26-029093 · Items 2.02,9.01

  19. DEF 14A · Proxy statement

    Report date 2026-06-26 · 0001193125-26-187428

  20. 10-K · Annual report

    Report date 2025-12-31 · 0001628280-26-008116

  21. 8-K · Current report

    Report date 2026-01-30 · 0001628280-26-004273 · Items 2.02,9.01

  22. 8-K · Current report

    Report date 2026-01-06 · 0001193125-26-005392 · Items 5.02,9.01

  23. 8-K · Current report

    Report date 2025-12-31 · 0001193125-26-000263 · Items 5.02,9.01

  24. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001628280-25-047805

  25. 8-K · Current report

    Report date 2025-10-31 · 0001628280-25-047660 · Items 2.02,9.01

  26. 8-K · Current report

    Report date 2025-10-30 · 0001193125-25-258573 · Items 7.01

  27. 8-K · Current report

    Report date 2025-09-03 · 0001193125-25-194474 · Items 7.01,9.01

  28. 8-K · Current report

    Report date 2025-08-01 · 0001193125-25-172652 · Items 5.02

  29. 8-K · Current report

    Report date 2025-07-29 · 0001193125-25-168037 · Items 5.02

  30. 10-Q · Quarterly report

    Report date 2025-06-30 · 0001628280-25-036060

  31. 8-K · Current report

    Report date 2025-07-25 · 0001628280-25-035982 · Items 2.02,9.01

  32. 8-K · Current report

    Report date 2025-06-27 · 0001193125-25-155525 · Items 5.02,5.07,9.01

  33. DEF 14A · Proxy statement

    Report date 2025-06-27 · 0001193125-25-100564

  34. 10-Q · Quarterly report

    Report date 2025-03-31 · 0001628280-25-019927

  35. 8-K · Current report

    Report date 2025-04-25 · 0001628280-25-019780 · Items 2.02,9.01

  36. 8-K · Current report

    Report date 2025-04-07 · 0001193125-25-078036 · Items 5.02

  37. 8-K · Current report

    Report date 2025-03-14 · 0001193125-25-055237 · Items 5.02,7.01,9.01

  38. 8-K · Current report

    Report date 2025-03-13 · 0001193125-25-053530 · Items 5.02

  39. 10-K · Annual report

    Report date 2024-12-31 · 0001628280-25-006093

  40. 8-K · Current report

    Report date 2025-01-31 · 0001628280-25-003243 · Items 2.02,9.01

Reported insider transactions

Download transactions CSV

SEC insider transactions · retrieved 2026-10-23 · 2026 Q3: filings in this completed quarter; not a live transaction feed

Purchases and sales include open-market or private transactions. Grants, exercises and tax withholding are shown separately. Amendments and joint reports can overlap; rows are not a net-buying score. Prices retain the filing's units; consult its footnotes.

Transaction rows by code · counts, not monetary totals
Purchase: 6 transaction rows6PSale: 7 transaction rows7SGrant / award: 0 transaction rows0AExercise / conversion: 2 transaction rows2MTax / exercise payment: 1 transaction rows1FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

16 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-09-02
2026-09-03
KNIGHT LESTER BP · Purchase
Acquired
Class A Ordinary Stock4145.0328.34
2026-09-02
2026-09-03
KNIGHT LESTER BP · Purchase
Acquired
Class A Ordinary Stock1440.0329.69
2026-09-02
2026-09-03
KNIGHT LESTER BP · Purchase
Acquired
Class A Ordinary Stock1739.0325.63
2026-09-02
2026-09-03
KNIGHT LESTER BP · Purchase
Acquired
Class A Ordinary Stock5097.0326.53
2026-09-02
2026-09-03
KNIGHT LESTER BP · Purchase
Acquired
Class A Ordinary Stock7212.0327.52
2026-09-02
2026-09-03
KNIGHT LESTER BP · Purchase
Acquired
Class A Ordinary Stock367.0330.51
2026-07-28
2026-07-30
Zeidel DarrenS · Sale
Disposed
Class A Ordinary Stock475.0380.0
2026-07-28
2026-07-30
Zeidel DarrenS · Sale
Disposed
Class A Ordinary Stock725.0378.0
2026-07-28
2026-07-30
Zeidel DarrenS · Sale
Disposed
Class A Ordinary Stock700.0376.0
2026-07-17
2026-07-21
Zeidel DarrenS · Sale
Disposed
Class A Ordinary Stock625.0370.0
2026-07-17
2026-07-21
Zeidel DarrenS · Sale
Disposed
Class A Ordinary Stock675.0374.0
2026-07-17
2026-07-21
Zeidel DarrenS · Sale
Disposed
Class A Ordinary Stock650.0372.0
2026-07-07
2026-07-09
Zeidel DarrenS · Sale
Disposed
Class A Ordinary Stock600.0360.0
2026-07-01
2026-07-06
Reese EdmundM · Exercise / conversion
Acquired
Class A Ordinary Stock3975.0n/a
2026-07-01
2026-07-06
Reese EdmundF · Tax / exercise payment
Disposed
Class A Ordinary Stock2198.11343.56
2026-07-01
2026-07-06
Reese EdmundM · Exercise / conversion
Disposed
Restricted Share Unit (Right to Receive)
Derivative security
3975.00.0

Identity & relationships

Wikidata structured data · retrieved 2026-10-23 · 1658 unambiguous CIK-linked entities; coverage is incomplete

These are sourced identity and relationship claims, with incomplete coverage. Headquarters locations do not describe sales, assets or operating exposure.

SEC issuer · 0000315293Aon plc

No parent relationship is available in this import; this is not proof of independence.

No verified LEI join available.

GLEIF legal entity reference data · retrieved 2026-10-23 · 1197 checked identities; 0 unavailable records

Search names and former names

View Wikidata identity and references ↗

  • Aon Corporation · alias · wikidata
  • AON CORP · former SEC name · 1995-11-14 to 2012-04-02
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Revenue in constant purchasing power

USD revenue expressed in 2026-09 consumer-price dollars. Each annual period uses a CPI-U average weighted by the days in its actual reporting interval. This is a purchasing-power comparison, not a company-specific price or volume measure.

Year endedReported USD revenueCPI-adjusted USD revenue
2024-12-31$15.70B$16.86B
2023-12-31$13.38B$14.79B
2022-12-31$12.48B$14.36B
2021-12-31$12.19B$15.16B
2020-12-31$11.07B$14.41B
2019-12-31$11.01B$14.51B
2018-12-31$10.77B$14.45B
2017-12-31$10.00B$13.74B

Bureau of Labor Statistics · retrieved 2026-10-23 · 9 selected series; gaps remain missing

Explore the CPI history ↗