Coverage description
An Insurance Services Office (ISO) standard form. It removes automatic insured status for organizations you newly acquire or form during the policy period.
How the form has changed
The 03 05 edition updates a paragraph reference and the form date. The coverage wording is the same as 01 96.
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 03 05Mar 2005Latest | 131 | 75 | 28 | Nov 2021 to Oct 2026 |
| 01 96Jan 1996 | 5 | 3 | 5 | Nov 2021 to Mar 2024 |
2 other edition dates appear in one or two filings each, often carrier-specific versions: 12 23, 03 06.
What the filings show
- Edition in use: in the past 12 months, 21 companies filed the 03 05 edition.
- CG 21 34 (Exclusion - Designated Work (for Use with Cgl and Products Policies)) is filed alongside it most often, in 130 of the same filings (94%).
Filed under
Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Oct 2026, excluding withdrawn and rejected filings.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 CG 21 36, out of 47 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| WCF Mutual Insurance Company GroupAssociated Indemnity Corporation | 16 | 16 | 03 05 | Jan 15, 2026 |
| Nationwide Corporation Group8 group companies filed it, led by Allied Insurance Company of America and Nationwide Agribusiness Insurance Company | 10 | 3 | 03 05 | Feb 12, 2025 |
| Markel Corporation Group3 group companies filed it, led by State National Insurance Company, Inc. and Markel Insurance Company | 9 | 4 | 03 05 | Oct 22, 2026 |
| Berkshire Hathaway Group3 group companies filed it, led by Berkshire Hathaway Homestate Insurance Company and Redwood Fire and Casualty Insurance Company | 8 | 8 | 03 05 | Jan 9, 2023 |
| Siriuspoint GroupSiriusPoint America Insurance Company | 7 | 3 | 03 05 | Jun 15, 2026 |
| CNA Insurance Group6 group companies filed it, led by American Casualty Company of Reading, Pennsylvania and Continental Casualty Company | 5 | 3 | 03 0512 23 | Oct 6, 2026 |
| Church Mutual GroupChurch Mutual Insurance Company, S.I. | 5 | 2 | 03 05 | Jun 26, 2026 |
| Sompo GroupSompo America Insurance Company | 5 | 1 | 03 05 | Jun 18, 2026 |
| Tokio Marine Holdings Incorporated GroupSafety National Casualty Corporation | 5 | 1 | 03 05 | Feb 17, 2026 |
| ACP Insurance Mgmt LLC GroupAccelerant National Insurance Company | 4 | 2 | 03 05 | Dec 8, 2025 |
How the largest insurers handle CG 21 36
Groups among the largest commercial general liability insurers that filed CG 21 36 or their own version in the past five years.
- Berkshire Hathaway GroupUses CG 21 36 in 7 filings
- WR Berkley Corporation GroupUses CG 21 36 in 1 filing
- Fairfax Financial GroupUses CG 21 36 in 2 filings
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States
Number of filings that include CG 21 36 in each state, Oct 2021 to Oct 2026. Darker states have more filings.
Often filed with
Standard-style form numbers that appear in the same filings most often.
- CG 21 34Exclusion - Designated Work (for Use with Cgl and Products Policies)130 filings
- CG 25 04Designated Location(S) General Aggregate Limit126 filings
- CG 21 47Employment- Related Practices Exclusion123 filings
- CG 21 00Exclusion - All Hazards in Connection with Designated Premises122 filings
- CG 21 96Silica or Silica- Related Dust Exclusion121 filings
- CG 21 33Exclusion - Designated Products (for Use with Cgl and Products Policies)120 filings
- CG 21 38Exclusion - Personal and Advertising Injury120 filings
- CG 21 53Exclusion - Designated Ongoing Operations120 filings
- IL 00 21Nuclear Energy Liability Exclusion Endorsement (Broad Form)119 filings
- CG 20 02Additional Insured - Club Members118 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Oct 22, 2026 | State National Insurance Company, Inc. | CO | 03 05 | STNA-135128706 |
| Oct 6, 2026 | American Casualty Company of Reading, Pennsylvaniaand 5 more | CA | 03 05 | CNAB-135091690 |
| Aug 17, 2026 | Mississippi Farm Bureau Casualty Insurance Company | MS | 03 05 | SFBC-135017175 |
| Jul 10, 2026 | Southern Farm Bureau Casualty Insurance Company | LA | 03 05 | SFBC-135013358 |
| Jun 30, 2026 | American Casualty Company of Reading, Pennsylvaniaand 5 more | CO | 12 23 | CNAB-135005337 |
| Jun 26, 2026 | Church Mutual Insurance Company, S.I. | CO | 03 05 | CHMU-134947220 |
| Jun 18, 2026 | Sompo America Insurance Company | CO | 03 05 | SMPJ-134985965 |
| Jun 17, 2026 | Atlantic Specialty Insurance Company | NM | 03 05 | BEAC-134983795 |
| Jun 15, 2026 | SiriusPoint America Insurance Company | CO | 03 05 | MRTN-134978899 |
| Jun 15, 2026 | SiriusPoint America Insurance Company | CO | 03 05 | MRTN-134978902 |
| Jun 2, 2026 | Zenith Insurance Company | CA | 03 05 | ZICO-134965759 |
| Apr 30, 2026 | Trisura Insurance Company | CA | 03 05 | SHNF-134881681 |
Most filed ISO CG forms
- CG 40 32 Exclusion - Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS)
- CG 21 06 Exclusion - Access Or Disclosure Of Confidential Or Personal Material Or Information
- CG 20 10 Additional Insured - Owners, Lessees or Contractors - Scheduled Person or Organization Endorsement
- CG DS 01 Commercial General Liability Declarations
- CG 20 26 Additional Insured - Designated Person or Organization Endorsement
- CG 00 01 Commercial General Liability Coverage Form
- CG 20 37 Additional Insured - Owners, Lessees or Contractors - Completed Operations Endorsement
- CG 40 28 Broad Abuse or Molestation Exclusion
- CG 20 28 Additional Insured - Lessor of Leased Equipment
- CG 20 11 Additional Insured - Managers or Lessors of Premises
- CG 21 47 Employment-Related Practices Exclusion
- CG 04 35 Employee Benefits Liability Coverage
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