Coverage description
An Insurance Services Office (ISO) standard form. It makes volunteers insureds while they use autos you don't own, hire or borrow for the scheduled volunteer activities or on your behalf, and excludes bodily injury to volunteers and their family members.
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 | 171 | 122 | 21 | Nov 2021 to Sep 2026 |
1 other edition date appears in one or two filings each, often carrier-specific versions: 11/01/2020.
Where filings record what this form replaced, they name other forms CA 99 34. Only some filings record replacements.
What the filings show
- Edition in use: in the past 12 months, 39 companies filed the 11 20 edition.
- CA 05 25 (Partners or Members as Insureds) is filed alongside it most often, in 168 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Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Sep 2026, excluding withdrawn and rejected filings.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 05 24, out of 58 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Nationwide Corporation Group11 group companies filed it, led by Allied Insurance Company of America and Nationwide Agribusiness Insurance Company | 19 | 7 | 11 20 | Apr 7, 2026 |
| Arch Insurance Group3 group companies filed it, led by Arch Insurance Company and Arch Indemnity Insurance Company | 13 | 2 | 11 20 | Apr 8, 2026 |
| OLD Republic Group4 group companies filed it, led by BITCO General Insurance Corporation and BITCO National Insurance Company | 13 | 1 | 11 20 | May 11, 2026 |
| Scor GroupGeneral Security National Insurance Company | 10 | 1 | 11 20 | Jun 9, 2026 |
| Clear Blue Financial Group2 group companies filed it, led by Clear Blue Insurance Company and Rock Ridge Insurance Company | 8 | 2 | 11 20 | Oct 29, 2025 |
| Southern Farm Bureau CAS Group3 group companies filed it, led by Colorado Farm Bureau Insurance Company and Southern Farm Bureau Casualty Insurance Company | 7 | 4 | 11 20 | Jul 8, 2026 |
| Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety National Casualty Corporation and Philadelphia Indemnity Insurance Company | 7 | 3 | 11 20 | Aug 27, 2026 |
| Markel Corporation Group2 group companies filed it, led by State National Insurance Company, Inc. and National Specialty Insurance Company | 5 | 4 | 11 20 | Jun 24, 2024 |
| Sompo Group2 group companies filed it, led by Sompo America Fire and Marine Insurance Company and Sompo America Insurance Company | 5 | 1 | 11 20 | Jun 18, 2026 |
| Ambac Financial GroupEverspan Insurance Company | 4 | 3 | 11 20 | Apr 28, 2025 |
How the largest insurers handle CA 05 24
Groups among the largest commercial auto insurers that filed CA 05 24 or their own version in the past five years.
- Progressive GroupUses CA 05 24 in 1 filing
See more forms
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States
Number of filings that include CA 05 24 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 05 25Partners or Members as Insureds168 filings
- CA 04 39Volunteer Hired Autos167 filings
- CA 20 54Employee Hired Autos163 filings
- CA 00 01Business Auto Coverage Form160 filings
- CA 20 71Auto Loan/Lease Gap Coverage159 filings
- CA 23 45Public or Livery Passenger Conveyance and on- Demand Delivery Services Exclusion158 filings
- CA 20 15Mobile Equipment156 filings
- CA 04 43Waiver of Transfer of Rights of Recovery Against Others to Us (Waiver of Subrogation) - Automatic When Required by Written Contract or Agreement154 filings
- CA 23 24Agricultural Produce Trailers - Seasonal153 filings
- CA 99 14Fire, Fire and Theft, Fire, Theft and Windstorm and Limited Specified Causes of Loss Coverages153 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| 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 | Colorado Farm Bureau Insurance Company | CO | 11 20 | SFBC-135011078 |
| Jun 25, 2026 | Selective Insurance Company of Americaand 3 more | CO | 11 20 | SELC-134998854 |
| 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 20 | SMPJ-134972831 |
| Jun 9, 2026 | General Security National Insurance Company | CO | 11 20 | PERR-134978283 |
| Jun 9, 2026 | General Security National Insurance Company | CO | 11 20 | PERR-134978297 |
| Jun 5, 2026 | Incline Casualty Company | SC | 11 20 | MRTN-134969595 |
| May 21, 2026 | Jet Insurance Company | NM | 11 20 | MRTN-134878221 |
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
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