Coverage description
An Insurance Services Office (ISO) standard form. It extends umbrella coverage to injury or damage arising from property in a trust, guardianship or estate you handle as a fiduciary, treating that property as yours and excluding injury or damage that began before you had the right or duty to act.
How the form has changed
The 06 26 edition updates formatting, the definition reference and the form date. The coverage wording is the same as 12 04.
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 06 26Jun 2026Latest | 27 | 2 | 26 | Sep 2025 to Feb 2026 |
| 12 04Dec 2004 | 52 | 30 | 16 | May 2022 to Aug 2026 |
Where filings record what this form replaced, they name earlier edition 12 04. Only some filings record replacements.
What the filings show
- Edition in use: in the past 12 months, 10 companies filed the 12 04 edition and 2 companies filed 06 26.
- CU 24 04 (Financial Institutions – Fiduciary Interest Only) is filed alongside it most often, in 77 of the same filings (97%).
Filed under
Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Aug 2026, excluding withdrawn and rejected filings. One filing can cover several affiliated companies.
Carriers filing this form
The 10 carrier groups with the most filings that include CU 24 06, out of 20 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Insurance Services Office, Inc.Advisory Organization | 26 | 26 | 06 26 | Jan 14, 2026 |
| Grinnell Mutual GroupGrinnell Mutual Reinsurance Company | 9 | 9 | 12 04 | Mar 22, 2023 |
| Nationwide Corporation Group4 group companies filed it, led by Nationwide Agribusiness Insurance Company and Crestbrook Insurance Company | 8 | 3 | 12 04 | Jun 30, 2026 |
| Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety National Casualty Corporation and Philadelphia Indemnity Insurance Company | 7 | 3 | 12 0406 26 | Aug 11, 2026 |
| Church Mutual GroupChurch Mutual Insurance Company, S.I. | 5 | 2 | 12 04 | Jun 26, 2026 |
| Sompo GroupSompo America Insurance Company | 5 | 1 | 12 04 | Jun 15, 2026 |
| AU Holding Company GroupContinental Indemnity Company | 3 | 3 | 12 04 | May 3, 2024 |
| American Family Insurance GroupMidvale Indemnity Company | 2 | 2 | 12 04 | Sep 28, 2023 |
| Berkshire Hathaway Group2 group companies filed it, led by The Medical Protective Company and Wellfleet Insurance Company | 2 | 2 | 12 04 | Jun 30, 2026 |
| Mountain West Farm GroupMountain West Farm Bureau Mutual Insurance Company | 2 | 2 | 12 04 | Oct 16, 2023 |
How the largest insurers handle CU 24 06
Groups among the largest commercial umbrella and excess insurers that filed CU 24 06 or their own version in the past five years.
- Chubb Limited GroupUses CU 24 06 in 1 filing
- Berkshire Hathaway GroupUses CU 24 06 in 1 filing
- Fairfax Financial GroupFiles its own version: CUZC 2406 Fiduciaries - Fiduciary Interest (1 state)
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States
Number of filings that include CU 24 06 in each state, Oct 2021 to Aug 2026. Darker states have more filings.
Often filed with
Standard-style form numbers that appear in the same filings most often.
- CU 24 04Financial Institutions – Fiduciary Interest Only77 filings
- CU 00 01Commercial Liability Umbrella Coverage Form76 filings
- CU 21 15Exclusion – Financial Services76 filings
- CU 22 94Professional Liability Exclusion – Computer, Telecommunication, Electronic Data Or Internet Services (formerly titled Professional Liability Exclusion – Electronic Data Processing Services And Computer Consulting Or Programming Services)75 filings
- CU 24 30Amendment of Insured Contract Definition75 filings
- CU 24 31Limited Contractual Liability – Railroads74 filings
- CU 22 85Exclusion – Internet Service Providers And Internet Access Providers Errors And Omissions73 filings
- CU 22 86Professional Liability Exclusion – Web Site Designers73 filings
- CU 22 93Professional Liability Exclusion – Computer Data Processing73 filings
- CU 22 01Exclusion – Property Entrusted70 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Aug 12, 2026 | Colonial Surety Company | SC | 12 04 | MRTN-134978915 |
| Aug 11, 2026 | Philadelphia Indemnity Insurance Company | SC | 12 04 | PHLX-135041545 |
| Jun 30, 2026 | The Medical Protective Companyand 1 more | IL | 12 04 | MDPC-135002488 |
| Jun 30, 2026 | Crestbrook Insurance Companyand 1 more | CO | 12 04 | NWPP-135003098 |
| Jun 26, 2026 | Church Mutual Insurance Company, S.I. | CO | 12 04 | CHMU-134995025 |
| Jun 19, 2026 | Addison Insurance Companyand 1 more | CO | 12 04 | UNFG-134979875 |
| Jun 15, 2026 | Sompo America Insurance Company | CO | 12 04 | SMPJ-134971280 |
| Jun 2, 2026 | Philadelphia Indemnity Insurance Company | IL | 12 04 | PHLX-134967828 |
| Feb 17, 2026 | Safety National Casualty Corporation | CO | 06 26 | SFCC-134815068 |
| Jan 14, 2026 | Insurance Services Office, Inc. | VA | 06 26 | ISOF-134799407 |
| Nov 22, 2025 | The Medical Protective Companyand 1 more | WA | 12 04 | MDPC-134692417 |
| Sep 30, 2025 | Insurance Services Office, Inc. | GA | 06 26 | ISOF-134687840 |
Most filed ISO CU forms
- CU 34 54 Exclusion - Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS)
- CU 21 86 Exclusion – Access Or Disclosure Of Confidential Or Personal Material Or Information
- CU 00 05 Exclusion - Violation of Law Addressing Data Privacy
- CU 34 56 Exclusion – Cyber Incident
- CU DS 01 Commercial Liability Umbrella Declarations
- CU 21 88 Exclusion - Access Or Disclosure Of Confidential Or Personal Material Or Information (Coverage B Only)
- CU 34 44 Broad Abuse or Molestation Exclusion
- CU 34 55 Exclusion - Electronic Data - Deletion Of Bodily Injury Exception
- CU 22 37 Motor Carrier Endorsement
- CU 21 87 Exclusion - Access Or Disclosure Of Confidential Or Personal Information and Data-Related Liability - Limited Bodily Injury Exception Not Included
- CU 04 02 Loss Of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion
- CU 04 54 Loss of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion - Deletion Of Bodily Injury Exception
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