Coverage description
An Insurance Services Office (ISO) standard form. It excludes bodily injury, property damage and personal and advertising injury arising out of a cyber incident, such as unauthorized computer access, malicious code or a denial of service attack, including related notification, forensic, restoration and extortion costs.
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 12 23Dec 2023Latest | 274 | 97 | 50 | Feb 2023 to Oct 2026 |
What the filings show
- Edition in use: in the past 12 months, 18 companies filed the 12 23 edition.
- CG 34 97 (Exclusion - Cyber Incident) is filed alongside it most often, in 203 of the same filings (74%).
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Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Oct 2026, excluding withdrawn and rejected filings.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 40 35, out of 36 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Insurance Services Office, Inc.Advisory Organization | 79 | 43 | 12 23 | Apr 9, 2025 |
| THE Hanover Insurance Group7 group companies filed it, led by The Hanover Insurance Company and Massachusetts Bay Insurance Company | 41 | 40 | 12 23 | Apr 10, 2024 |
| Berkshire Hathaway Group4 group companies filed it, led by Berkshire Hathaway Homestate Insurance Company and Redwood Fire and Casualty Insurance Company | 29 | 27 | 12 23 | Dec 13, 2024 |
| Donegal Group6 group companies filed it, led by Atlantic States Insurance Company and Donegal Mutual Insurance Company | 22 | 20 | 12 23 | Oct 26, 2023 |
| Nationwide Corporation Group11 group companies filed it, led by Allied Insurance Company of America and Nationwide Agribusiness Insurance Company | 12 | 12 | 12 23 | Jul 21, 2025 |
| WCF Mutual Insurance Company GroupAssociated Indemnity Corporation | 11 | 11 | 12 23 | Sep 16, 2025 |
| Clear Blue Financial GroupClear Blue Insurance Company | 10 | 10 | 12 23 | Apr 29, 2025 |
| Frank Winston Crum Insurance Company | 10 | 10 | 12 23 | Apr 11, 2025 |
| Brethren Mutual Insurance Company | 6 | 6 | 12 23 | Apr 30, 2026 |
| CNA Insurance Group6 group companies filed it, led by American Casualty Company of Reading, Pennsylvania and Continental Casualty Company | 5 | 3 | 12 23 | Oct 6, 2026 |
How the largest insurers handle CG 40 35
Groups among the largest commercial general liability insurers that filed CG 40 35 or their own version in the past five years.
- Chubb Limited GroupFiles its own version: CB CG 210460 Exclusion - Cyber Incident (44 states)
- Berkshire Hathaway GroupUses CG 40 35 in 29 filings
- WR Berkley Corporation GroupFiles its own version: EL 22 49 Exclusion Cyber Incident (33 states)
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States
Number of filings that include CG 40 35 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 34 97Exclusion - Cyber Incident203 filings
- CG 21 06Exclusion - Access Or Disclosure Of Confidential Or Personal Material Or Information199 filings
- CG 00 69Exclusion - Violation Of Law Addressing Data Privacy188 filings
- CG 04 37Loss Of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion136 filings
- CG 21 08Exclusion - Access Or Disclosure Of Confidential Or Personal Material Or Information (Coverage B Only)135 filings
- CG 04 25Cyber Incident Liability Coverage Subject To Each Cyber Incident Occurrence And Aggregate Limits125 filings
- CG 04 71Loss Of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion - Deletion Of Bodily Injury Exception124 filings
- CG 34 92Cyber Incident Liability Coverage Subject To Each Cyber Incident Occurrence And Aggregate Limits124 filings
- CG 04 95Cyber Incident Liability Coverage And Loss Of Electronic Data Liability Coverage Subject To Loss Of Electronic Data, Each Cyber Incident Occurrence And Aggregate Limits123 filings
- CG 24 56Excess Insurance Provision - Order Of Response - When You Are An Additional Insured On Other Insurance95 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Oct 6, 2026 | American Casualty Company of Reading, Pennsylvaniaand 5 more | CA | 12 23 | CNAB-135091690 |
| 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 | 12 23 | CHMU-134947220 |
| Jun 24, 2026 | Southern Trust Insurance Company | GA | 12 23 | STTR-134864949 |
| Jun 18, 2026 | Sompo America Insurance Company | CO | 12 23 | SMPJ-134985965 |
| Jun 17, 2026 | Atlantic Specialty Insurance Company | NM | 12 23 | BEAC-134983795 |
| Jun 15, 2026 | SiriusPoint America Insurance Company | CO | 12 23 | MRTN-134978899 |
| Jun 15, 2026 | SiriusPoint America Insurance Company | CO | 12 23 | MRTN-134978902 |
| Apr 30, 2026 | Brethren Mutual Insurance Company | WV | 12 23 | BRMT-134894238 |
| Mar 25, 2026 | First Fire and Casualty Insurance Of Hawaii, Inc.and 3 more | HI | 12 23 | FICH-134883818 |
| Mar 20, 2026 | American Casualty Company of Reading, Pennsylvaniaand 5 more | CO | 12 23 | CNAB-134872676 |
| Feb 24, 2026 | American Casualty Company of Reading, Pennsylvaniaand 5 more | SC | 12 23 | CNAB-134851008 |
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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