Coverage description
An Insurance Services Office (ISO) standard form. It amends a single interest policy to exclude autos used as a public or livery conveyance or by a retail purchaser logged into a transportation or delivery network platform, unless the use is declared or relates directly to the named insured's business.
How the form has changed
1 change across 1 revision, newest first. Each edition is compared with the one before it, using wording from filed copies.
11 20 edition
Nov 2020, compared with 11 16Latest editionThe exclusion no longer applies to business activities of a retail purchaser that are directly related to the named insured.
11 16
Not in this edition
11 20
“However, this exclusion does not apply to business activities”
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 11 20Nov 2020Latest | 156 | 96 | 29 | Nov 2021 to Sep 2026 |
| 11 16Nov 2016 | 25 | 17 | 5 | Feb 2022 to Jun 2026 |
2 other edition dates appear in one or two filings each, often carrier-specific versions: 10 21, 03 06.
Where filings record what this form replaced, they name earlier edition 11 16. Only some filings record replacements.
What the filings show
- Edition in use: in the past 12 months, 26 companies filed the 11 20 edition and 4 companies filed 11 16.
- CA 20 15 (Mobile Equipment) is filed alongside it most often, in 173 of the same filings (98%).
Filed under
Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Sep 2026, excluding withdrawn and rejected filings.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 CA 26 04, out of 47 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Cincinnati Financial Group3 group companies filed it, led by The Cincinnati Casualty Company and The Cincinnati Indemnity Company | 27 | 26 | 11 20 | Sep 21, 2026 |
| Nationwide Corporation Group11 group companies filed it, led by Nationwide Agribusiness Insurance Company and Allied Insurance Company of America | 14 | 5 | 11 20 | Sep 22, 2025 |
| Arch Insurance Group3 group companies filed it, led by Arch Insurance Company and Arch Indemnity Insurance Company | 13 | 2 | 11 20 | Apr 8, 2026 |
| Scor GroupGeneral Security National Insurance Company | 10 | 1 | 11 20 | Jun 9, 2026 |
| Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety National Casualty Corporation and Philadelphia Indemnity Insurance Company | 10 | 6 | 11 2011 16 | Aug 27, 2026 |
| Clear Blue Financial Group2 group companies filed it, led by Clear Blue Insurance Company and Rock Ridge Insurance Company | 9 | 2 | 11 20 | Oct 29, 2025 |
| Markel Corporation Group3 group companies filed it, led by State National Insurance Company, Inc. and Markel Insurance Company | 8 | 4 | 11 2011 16 | Jun 24, 2024 |
| OLD Republic Group2 group companies filed it, led by Old Republic General Insurance Corporation and Old Republic Insurance Company | 8 | 1 | 11 20 | Jun 30, 2025 |
| Alliance Insurance GroupFarmers Alliance Mutual Insurance Company | 6 | 1 | 11 1611 20 | May 19, 2026 |
| Liberty Mutual Group7 group companies filed it, led by State Automobile Mutual Insurance Company and Employers Insurance Company of Wausau | 6 | 1 | 11 1611 20 | Jun 17, 2026 |
How the largest insurers handle CA 26 04
Groups among the largest commercial auto insurers that filed CA 26 04 or their own version in the past five years.
- Progressive GroupUses CA 26 04 in 1 filing
- Berkshire Hathaway GroupUses CA 26 04 in 1 filing
See more forms
Search related forms, compare editions, and research carrier filings with FilingFocus.
States
Number of filings that include CA 26 04 in each state, Oct 2021 to Sep 2026. Darker states have more filings.
Often filed with
Standard-style form numbers that appear in the same filings most often.
- CA 20 15Mobile Equipment173 filings
- CA 20 54Employee Hired Autos148 filings
- CA 00 01Business Auto Coverage Form147 filings
- CA 23 24Agricultural Produce Trailers - Seasonal146 filings
- CA 20 06Driving Schools - Non-Owned Autos145 filings
- CA 23 45Public or Livery Passenger Conveyance and on- Demand Delivery Services Exclusion145 filings
- CA 20 71Auto Loan/Lease Gap Coverage144 filings
- CA 23 17Truckers - Uniform Intermodal Interchange Endorsement Form Uiie - 1144 filings
- CA 99 14Fire, Fire and Theft, Fire, Theft and Windstorm and Limited Specified Causes of Loss Coverages144 filings
- CA 20 01Lessor - Additional Insured and Loss Payee143 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Sep 21, 2026 | The Cincinnati Casualty Companyand 2 more | NV | 11 20 | CNNA-135046178 |
| Sep 10, 2026 | SECURA Insurance, A Mutual Companyand 1 more | IL | 11 20 | SEIC-135044227 |
| Aug 28, 2026 | Jet Insurance Company | SC | 11 20 | MRTN-134878222 |
| Aug 27, 2026 | Philadelphia Indemnity Insurance Company | NM | 11 20 | PHLX-135063316 |
| Jul 8, 2026 | The Cincinnati Casualty Companyand 2 more | SD | 11 20 | CNNA-134986113 |
| Jul 2, 2026 | The Cincinnati Casualty Companyand 2 more | WY | 11 20 | CNNA-134975302 |
| Jun 24, 2026 | Great American Alliance Insurance Companyand 3 more | CO | 11 20 | GACX-134993563 |
| Jun 19, 2026 | Addison Insurance Companyand 1 more | CO | 11 20 | UNFG-134905846 |
| Jun 18, 2026 | Sompo America Fire and Marine Insurance Companyand 1 more | CO | 11 2011 16 | SMPJ-134972831 |
| Jun 17, 2026 | State Automobile Mutual Insurance Company | CO | 11 16 | STAT-134983865 |
| Jun 10, 2026 | The Cincinnati Casualty Companyand 2 more | NJ | 11 20 | CNNA-134958927 |
| Jun 9, 2026 | General Security National Insurance Company | CO | 11 20 | PERR-134978283 |
Most filed ISO CA forms
- CA DS 03 Business Auto Declarations
- CA DS 21 Motor Carrier Declarations
- CA 00 01 Business Auto Coverage Form
- CA 28 03 Abuse Or Molestation Exclusion For Covered Autos Liability Exposure
- CA 23 17 Truckers - Uniform Intermodal Interchange Endorsement Form UIIE - 1
- CA 04 43 Waiver Of Transfer Of Rights Of Recovery Against Others To Us (Waiver Of Subrogation) - Automatic When Required By Written Contract Or Agreement
- CA 04 44 Waiver Of Transfer Of Rights Of Recovery Against Others To Us (Waiver Of Subrogation)
- CA 04 49 Primary and Noncontributory - Other Insurance Condition
- CA 20 01 Lessor - Additional Insured And Loss Payee
- CA 20 48 Designated Insured For Covered Autos Liability Coverage
- CA 00 20 Motor Carrier Coverage Form
- CA 20 71 Auto Loan/Lease Gap Coverage
See more carrier forms
Search forms by carrier, line of business, state, and wording with FilingFocus.