Coverage description
An Insurance Services Office (ISO) standard form. It automatically makes anyone you agree in a written construction contract to add as an additional insured, and other parties that contract requires, insureds for your ongoing operations, with exclusions for professional services and completed work.
How the form has changed
2 changes across 1 revision, newest first. Each edition is compared with the one before it, using wording from filed copies.
12 19 edition
Dec 2019, compared with 04 13Latest editionThe additional insured's limit is now capped by the applicable limits of insurance, without requiring them to be shown in the Declarations.
04 13
“Available under the applicable Limits of Insurance shown in the Declarations;”
12 19
“Available under the applicable limits of insurance;”
Coverage for ongoing operations now expressly applies to both the contracting party and the other parties the contract requires you to add.
04 13
Not in this edition
12 19
“your ongoing operations for the additional insured described in Paragraph 1. or 2. above”
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 | 123 | 72 | 33 | Nov 2021 to Oct 2026 |
| 04 13Apr 2013 | 35 | 15 | 17 | Dec 2021 to Jun 2026 |
| 07 04Jul 2004 | 3 | 2 | 3 | Oct 2022 to Nov 2022 |
1 other edition date appears in one or two filings each, often carrier-specific versions: 10/1/2020.
Where filings record what this form replaced, they name earlier edition 04 13. Only some filings record replacements.
What the filings show
- Edition in use: in the past 12 months, 22 companies filed the 12 19 edition and 1 company filed 04 13.
- CG 20 33 (Additional Insured – Owners, Lessees or Contractors – Automatic Status When Required in a Written Construction Agreement with You) is filed alongside it most often, in 153 of the same filings (99%).
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Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Oct 2026, excluding withdrawn and rejected filings.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 20 38, out of 42 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Markel Corporation Group3 group companies filed it, led by State National Insurance Company, Inc. and Markel Insurance Company | 22 | 16 | 04 1312 19 | Oct 22, 2026 |
| Cincinnati Financial Group3 group companies filed it, led by The Cincinnati Casualty Company and The Cincinnati Indemnity Company | 16 | 16 | 12 19 | Oct 23, 2023 |
| WCF Mutual Insurance Company GroupAssociated Indemnity Corporation | 16 | 16 | 12 19 | Jan 15, 2026 |
| Nationwide Corporation Group8 group companies filed it, led by Allied Insurance Company of America and Nationwide Agribusiness Insurance Company | 10 | 3 | 04 1312 19 | Feb 12, 2025 |
| Tokio Marine Holdings Incorporated Group4 group companies filed it, led by Safety National Casualty Corporation and TNUS Insurance Company | 8 | 2 | 12 19 | Feb 17, 2026 |
| Sompo GroupSompo America Insurance Company | 7 | 2 | 12 19 | Jun 18, 2026 |
| Grange Mutual CAS Group3 group companies filed it, led by Grange Indemnity Insurance Company and Grange Insurance Company | 6 | 6 | 12 19 | Mar 28, 2024 |
| Hastings Mutual Insurance Company | 6 | 5 | 12 19 | Mar 13, 2025 |
| Siriuspoint GroupSiriusPoint America Insurance Company | 6 | 2 | 12 19 | Jun 15, 2026 |
| Church Mutual GroupChurch Mutual Insurance Company, S.I. | 5 | 2 | 12 19 | Jun 26, 2026 |
How the largest insurers handle CG 20 38
Groups among the largest commercial general liability insurers that filed CG 20 38 or their own version in the past five years.
- Berkshire Hathaway GroupUses CG 20 38 in 1 filing
- WR Berkley Corporation GroupUses CG 20 38 in 1 filing
- Fairfax Financial GroupUses CG 20 38 in 2 filings
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States
Number of filings that include CG 20 38 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 20 33Additional Insured – Owners, Lessees or Contractors – Automatic Status When Required in a Written Construction Agreement with You153 filings
- CG 20 01Primary and Noncontributory - Other Insurance Condition149 filings
- CG 20 35Additional Insured – Grantor of Licenses – Automatic Status When Required by Licensor141 filings
- CG 20 15Additional Insured – Vendors140 filings
- CG 20 28Additional Insured – Lessor of Leased Equipment140 filings
- CG 20 36Additional Insured – Grantor of Licenses140 filings
- CG 20 37Additional Insured - Owners, Lessees or Contractors - Completed Operations140 filings
- CG 20 26Additional Insured – Designated Person or Organization139 filings
- CG 20 27Additional Insured - Co-Owner of Insured Premises139 filings
- CG 20 34Additional Insured - Lessor of Leased Equipment - Automatic Status When Required in Lease Agreement with You139 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 | 12 19 | STNA-135128706 |
| Jun 26, 2026 | Church Mutual Insurance Company, S.I. | CO | 12 19 | CHMU-134947220 |
| Jun 24, 2026 | Southern Trust Insurance Company | GA | 12 19 | STTR-134864949 |
| Jun 18, 2026 | Sompo America Insurance Company | CO | 12 19 | SMPJ-134985965 |
| Jun 17, 2026 | Atlantic Specialty Insurance Company | NM | 12 1904 13 | BEAC-134983795 |
| Jun 15, 2026 | SiriusPoint America Insurance Company | CO | 12 19 | MRTN-134978899 |
| Jun 15, 2026 | SiriusPoint America Insurance Company | CO | 12 19 | MRTN-134978902 |
| Jun 2, 2026 | Zenith Insurance Company | CA | 12 19 | ZICO-134965759 |
| Apr 30, 2026 | Trisura Insurance Company | CA | 12 19 | SHNF-134881681 |
| Mar 20, 2026 | American Casualty Company of Reading, Pennsylvaniaand 5 more | CO | 12 19 | CNAB-134872676 |
| Feb 24, 2026 | American Casualty Company of Reading, Pennsylvaniaand 5 more | SC | 12 19 | CNAB-134851008 |
| Feb 17, 2026 | Safety National Casualty Corporation | CO | 12 19 | SFCC-134814522 |
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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