Coverage description
An Insurance Services Office (ISO) standard form. It covers umbrella property damage within the underground resources and equipment hazard for the scheduled operations, subject to a per-well aggregate limit, and excludes well control costs and claims by co-owners of the working interest.
How the form has changed
The 06 26 edition replaces the preprinted list of oil and gas operations with a blank description in the schedule. The coverage wording is the same as 05 09.
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 |
| 05 09May 2009 | 37 | 24 | 6 | May 2022 to Aug 2026 |
1 other edition date appears in one or two filings each, often carrier-specific versions: 04 92.
Where filings record what this form replaced, they name earlier edition 05 09. Only some filings record replacements.
What the filings show
- Edition in use: in the past 12 months, 11 companies filed the 05 09 edition and 2 companies filed 06 26.
- CU 21 42 (Exclusion – Exterior Insulation And Finish Systems) is filed alongside it most often, in 65 of the same filings (100%).
Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Aug 2026, excluding withdrawn and rejected filings.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 22 16, out of 18 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Insurance Services Office, Inc.Advisory Organization | 26 | 26 | 06 26 | Jan 14, 2026 |
| Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety National Casualty Corporation and Philadelphia Indemnity Insurance Company | 7 | 3 | 05 0906 26 | Aug 11, 2026 |
| Nationwide Corporation Group3 group companies filed it, led by Crestbrook Insurance Company and Nationwide Agribusiness Insurance Company | 6 | 2 | 05 09 | Jun 30, 2026 |
| Church Mutual GroupChurch Mutual Insurance Company, S.I. | 5 | 2 | 05 09 | Jun 26, 2026 |
| Sompo GroupSompo America Insurance Company | 5 | 1 | 05 09 | Jun 15, 2026 |
| AU Holding Company GroupContinental Indemnity Company | 3 | 3 | 05 09 | May 3, 2024 |
| American Family Insurance GroupMidvale Indemnity Company | 2 | 2 | 05 09 | Sep 28, 2023 |
| Ally Insurance Holdings GroupMotors Insurance Corporation | 1 | 1 | 05 09 | Mar 19, 2024 |
| Berkshire Hathaway Group2 group companies filed it, led by The Medical Protective Company and Wellfleet Insurance Company | 1 | 1 | 05 09 | Jun 30, 2026 |
| Chubb Limited GroupBankers Standard Insurance Company | 1 | 1 | 05 09 | Sep 25, 2024 |
How the largest insurers handle CU 22 16
Groups among the largest commercial umbrella and excess insurers that filed CU 22 16 or their own version in the past five years.
- Chubb Limited GroupUses CU 22 16 in 1 filing
- Berkshire Hathaway GroupUses CU 22 16 in 1 filing
- Fairfax Financial GroupUses CU 22 16 in 1 filing
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States
Number of filings that include CU 22 16 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 21 42Exclusion – Exterior Insulation And Finish Systems65 filings
- CU 22 01Exclusion – Property Entrusted65 filings
- CU 22 08Exclusion – Saline Substances Contamination65 filings
- CU 22 13Exclusion – Underground Resources And Equipment65 filings
- CU 22 17Stevedoring Operations – Products-Completed Operations Hazard Redefined65 filings
- CU 24 04Financial Institutions – Fiduciary Interest Only64 filings
- CU 22 05Exclusion - Housing Projects Sites63 filings
- CU 24 06Fiduciaries – Fiduciary Interest63 filings
- CU 21 15Exclusion – Financial Services62 filings
- CU 22 24Exclusion – Telecommunication Equipment Or Service Providers Errors And Omissions62 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 | 05 09 | MRTN-134978915 |
| Aug 11, 2026 | Philadelphia Indemnity Insurance Company | SC | 05 09 | PHLX-135041545 |
| Jul 2, 2026 | Zenith Insurance Company | CA | 05 09 | ZICO-134998423 |
| Jun 30, 2026 | The Medical Protective Companyand 1 more | IL | 05 09 | MDPC-135002488 |
| Jun 30, 2026 | Crestbrook Insurance Companyand 1 more | CO | 05 09 | NWPP-135003098 |
| Jun 26, 2026 | Church Mutual Insurance Company, S.I. | CO | 05 09 | CHMU-134995025 |
| Jun 19, 2026 | Addison Insurance Companyand 1 more | CO | 05 09 | UNFG-134979875 |
| Jun 15, 2026 | Sompo America Insurance Company | CO | 05 09 | SMPJ-134971280 |
| Jun 2, 2026 | Philadelphia Indemnity Insurance Company | IL | 05 09 | 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 |
| 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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