Coverage description
An Insurance Services Office (ISO) standard form. It provides the supplemental extended reporting period under umbrella claims-made coverage, with a separate supplemental aggregate limit for claims first received and recorded during that period.
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 09 00Sep 2000Latest | 60 | 42 | 7 | Apr 2022 to Aug 2026 |
What the filings show
- Edition in use: in the past 12 months, 26 companies filed the 09 00 edition.
- CU 27 04 (Supplemental Extended Reporting Periods for Specific Accidents, Products, Work or Locations) is filed alongside it most often, in 58 of the same filings (97%).
Filed under
Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Aug 2026, excluding withdrawn and rejected filings.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 CU 27 03, out of 18 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Nationwide Corporation Group4 group companies filed it, led by Nationwide Agribusiness Insurance Company and Crestbrook Insurance Company | 9 | 4 | 09 00 | Jun 30, 2026 |
| WR Berkley Corporation Group14 group companies filed it, led by Acadia Insurance Company and Continental Western Insurance Company | 9 | 1 | 09 00 | Jun 19, 2026 |
| Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety National Casualty Corporation and Philadelphia Indemnity Insurance Company | 7 | 3 | 09 00 | Aug 11, 2026 |
| Church Mutual GroupChurch Mutual Insurance Company, S.I. | 5 | 2 | 09 00 | Jun 26, 2026 |
| Liberty Mutual GroupState Automobile Mutual Insurance Company | 5 | 1 | 09 00 | Jun 17, 2026 |
| Pharmacists Mutual Group2 group companies filed it, led by Pharmacists Mutual Insurance Company and Chiron Insurance Company | 5 | 2 | 09 00 | Jun 18, 2026 |
| Sompo GroupSompo America Insurance Company | 5 | 1 | 09 00 | Jun 15, 2026 |
| AU Holding Company GroupContinental Indemnity Company | 3 | 3 | 09 00 | May 3, 2024 |
| American Family Insurance GroupMidvale Indemnity Company | 2 | 2 | 09 00 | Sep 28, 2023 |
| Encova Mutual Insurance Group3 group companies filed it, led by Motorists Mutual Insurance Company and Wilson Mutual Insurance Company | 2 | 2 | 09 00 | Jun 25, 2024 |
How the largest insurers handle CU 27 03
Groups among the largest commercial umbrella and excess insurers that filed CU 27 03 or their own version in the past five years.
- Chubb Limited GroupUses CU 27 03 in 1 filing
- WR Berkley Corporation GroupFiles its own version: CL CU 2731 Supplemental Extended Reporting Period Endorsement (1 state)
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States
Number of filings that include CU 27 03 in each state, Oct 2021 to Aug 2026. Darker states have more filings.
Often filed with
Standard-style form numbers that appear in the same filings most often.
- CU 27 04Supplemental Extended Reporting Periods for Specific Accidents, Products, Work or Locations58 filings
- CU 27 01Exclusion of Specific Accidents, Products, Work or Location57 filings
- CU 27 02Amendment - Extended Reporting Periods for Specific Accidents, Products, Work or Location57 filings
- CU 27 10Extended Reporting Period Endorsement For Employee Benefits Liability Coverage56 filings
- CU 04 03Employee Benefits Liability Coverage48 filings
- CU 21 55Amended Terrorism Coverage - Covered Autos48 filings
- CU 21 47Exclusion of Terrorism Involving Nuclear, Biological or Chemical Terrorism44 filings
- CU 21 48Extended Reporting Period for Terrorism Coverage44 filings
- CU 27 14Extended Reporting Period Endorsement for Condominiums, Co-Ops, Associations - Directors and Officers Liability Coverage44 filings
- CU 21 30Cap on Losses From Certified Acts of Terrorism43 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Aug 12, 2026 | Colonial Surety Company | SC | 09 00 | MRTN-134978915 |
| Aug 11, 2026 | Philadelphia Indemnity Insurance Company | SC | 09 00 | PHLX-135041545 |
| Jun 30, 2026 | Crestbrook Insurance Companyand 1 more | CO | 09 00 | NWPP-135003098 |
| Jun 26, 2026 | Church Mutual Insurance Company, S.I. | CO | 09 00 | CHMU-134995025 |
| Jun 19, 2026 | Acadia Insurance Companyand 4 more | CO | 09 00 | BNIC-134992811 |
| Jun 19, 2026 | Berkley Casualty Companyand 8 more | CO | 09 00 | BNIC-134992815 |
| Jun 19, 2026 | Addison Insurance Companyand 1 more | CO | 09 00 | UNFG-134979875 |
| Jun 18, 2026 | Chiron Insurance Companyand 1 more | CO | 09 00 | PHAR-134991608 |
| Jun 17, 2026 | State Automobile Mutual Insurance Company | CO | 09 00 | STAT-134983370 |
| Jun 15, 2026 | Sompo America Insurance Company | CO | 09 00 | SMPJ-134971280 |
| Jun 2, 2026 | Philadelphia Indemnity Insurance Company | IL | 09 00 | PHLX-134967828 |
| Feb 17, 2026 | Safety National Casualty Corporation | CO | 09 00 | SFCC-134815068 |
Most filed ISO CU forms
- CU 34 54 Exclusion - Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS)
- CU 21 86 Exclusion – Access Or Disclosure Of Confidential Or Personal Material Or Information
- CU 00 05 Exclusion - Violation of Law Addressing Data Privacy
- CU 34 56 Exclusion – Cyber Incident
- CU DS 01 Commercial Liability Umbrella Declarations
- CU 21 88 Exclusion - Access Or Disclosure Of Confidential Or Personal Material Or Information (Coverage B Only)
- CU 34 44 Broad Abuse or Molestation Exclusion
- CU 34 55 Exclusion - Electronic Data - Deletion Of Bodily Injury Exception
- CU 22 37 Motor Carrier Endorsement
- CU 21 87 Exclusion - Access Or Disclosure Of Confidential Or Personal Information and Data-Related Liability - Limited Bodily Injury Exception Not Included
- CU 04 02 Loss Of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion
- CU 04 54 Loss of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion - Deletion Of Bodily Injury Exception
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