Coverage description
An Insurance Services Office (ISO) standard form. It excludes umbrella coverage for bodily injury from inhaling or being exposed to vapor from electronic smoking devices or their parts and accessories, but not for bodily injury from a device exploding or bursting.
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 12 19Dec 2019Latest | 53 | 22 | 20 | May 2022 to Aug 2026 |
What the filings show
- Edition in use: in the past 12 months, 12 companies filed the 12 19 edition.
- CU 34 10 (Exclusion - Athletic Or Sports Participants - All Contests Or Exhibitions) is filed alongside it most often, in 52 of the same filings (98%).
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Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Aug 2026, excluding withdrawn and rejected filings.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 34 21, out of 18 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Grinnell Mutual GroupGrinnell Mutual Reinsurance Company | 10 | 10 | 12 19 | Mar 26, 2024 |
| Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety National Casualty Corporation and Philadelphia Indemnity Insurance Company | 7 | 3 | 12 19 | Aug 11, 2026 |
| Grange Mutual CAS GroupGrange Insurance Company | 6 | 6 | 12 19 | Mar 26, 2024 |
| Church Mutual GroupChurch Mutual Insurance Company, S.I. | 5 | 2 | 12 19 | Jun 26, 2026 |
| Nationwide Corporation Group2 group companies filed it, led by Crestbrook Insurance Company and Nationwide Agribusiness Insurance Company | 5 | 1 | 12 19 | Jun 30, 2026 |
| Sompo GroupSompo America Insurance Company | 5 | 1 | 12 19 | Jun 15, 2026 |
| Berkshire Hathaway Group2 group companies filed it, led by The Medical Protective Company and Wellfleet Insurance Company | 2 | 2 | 12 19 | Jun 30, 2026 |
| Liberty Mutual GroupState Automobile Mutual Insurance Company | 2 | 2 | 12 19 | Mar 10, 2023 |
| Mountain West Farm GroupMountain West Farm Bureau Mutual Insurance Company | 2 | 2 | 12 19 | Oct 16, 2023 |
| AU Holding Company GroupContinental Indemnity Company | 1 | 1 | 12 19 | May 25, 2023 |
How the largest insurers handle CU 34 21
Groups among the largest commercial umbrella and excess insurers that filed CU 34 21 or their own version in the past five years.
- Berkshire Hathaway GroupUses CU 34 21 in 1 filing
- Fairfax Financial GroupUses CU 34 21 in 1 filing
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States
Number of filings that include CU 34 21 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 34 10Exclusion - Athletic Or Sports Participants - All Contests Or Exhibitions52 filings
- CU 34 17Exclusion - Earth Movement51 filings
- CU 34 18Exclusion - Earth Movement - Completed Operations51 filings
- CU 34 22Cannabis Exclusion50 filings
- CU 34 24Cannabis Exclusion with Hemp and Lessors Risk Exceptions50 filings
- CU 21 90Public Or Livery Passenger Conveyance And On-Demand Delivery Services Exclusion47 filings
- CU 22 37Motor Carrier Endorsement47 filings
- CU 24 01Waiver Of Transfer Of Rights Of Recovery Against Others To Us (Waiver Of Subrogation)45 filings
- CU 21 26Exclusion – Cross Suits Liability44 filings
- CU 34 05Exclusion Of Federal Employees Using Autos In Government Business44 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Aug 11, 2026 | Philadelphia Indemnity Insurance Company | SC | 12 19 | PHLX-135041545 |
| Jul 2, 2026 | Zenith Insurance Company | CA | 12 19 | ZICO-134998423 |
| Jun 30, 2026 | The Medical Protective Companyand 1 more | IL | 12 19 | MDPC-135002488 |
| Jun 30, 2026 | Crestbrook Insurance Companyand 1 more | CO | 12 19 | NWPP-135003098 |
| Jun 26, 2026 | Church Mutual Insurance Company, S.I. | CO | 12 19 | CHMU-134995025 |
| Jun 19, 2026 | Addison Insurance Companyand 1 more | CO | 12 19 | UNFG-134979875 |
| Jun 15, 2026 | Sompo America Insurance Company | CO | 12 19 | SMPJ-134971280 |
| Jun 2, 2026 | Philadelphia Indemnity Insurance Company | IL | 12 19 | PHLX-134967828 |
| Feb 17, 2026 | Safety National Casualty Corporation | CO | 12 19 | SFCC-134815068 |
| Jan 7, 2026 | Merchants Mutual Insurance Company | MA | 12 19 | MERC-134789495 |
| Nov 22, 2025 | The Medical Protective Companyand 1 more | WA | 12 19 | MDPC-134692417 |
| Jun 27, 2025 | Church Mutual Insurance Company, S.I. | CO | 12 19 | CHMU-134582751 |
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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