Coverage description
An Insurance Services Office (ISO) standard form. It excludes umbrella coverage for certified acts of terrorism, and for other acts of terrorism committed outside the United States but within the coverage territory when they meet thresholds such as $25 million in damage or 50 serious injuries.
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.
01 15 edition
Jan 2015, compared with 12 02Latest editionThe exclusion for other (non-certified) acts of terrorism now applies only to acts committed outside the United States.
12 02
“out of a "certified act of terrorism" or an "other act of terrorism". However”
01 15
“that is committed outside of the United States”
The definition of a certified act of terrorism no longer requires a foreign actor, and can include certain damage outside the United States, such as to US air carriers, vessels and missions.
12 02
“acting on behalf of any foreign person or foreign interest”
01 15
“regardless of where the loss occurs”
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 01 15Jan 2015Latest | 47 | 37 | 7 | May 2022 to Aug 2026 |
| 12 02Dec 2002 | 4 | 2 | 3 | Nov 2022 to Apr 2023 |
What the filings show
- Edition in use: in the past 12 months, 26 companies filed the 01 15 edition.
- CU 21 36 (Exclusion Of Punitive Damages Related To A Certified Act Of Terrorism) is filed alongside it most often, in 49 of the same filings (96%).
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Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Aug 2026, excluding withdrawn and rejected filings.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 21 35, out of 19 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| WR Berkley Corporation Group14 group companies filed it, led by Acadia Insurance Company and Continental Western Insurance Company | 9 | 1 | 01 15 | 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 | 01 15 | Aug 11, 2026 |
| Church Mutual GroupChurch Mutual Insurance Company, S.I. | 5 | 2 | 01 15 | Jun 26, 2026 |
| Nationwide Corporation Group2 group companies filed it, led by Crestbrook Insurance Company and Nationwide Agribusiness Insurance Company | 5 | 1 | 01 15 | Jun 30, 2026 |
| Sompo GroupSompo America Insurance Company | 5 | 1 | 01 15 | Jun 15, 2026 |
| James River GroupFalls Lake National Insurance Company | 3 | 3 | 12 02 | Nov 21, 2022 |
| AU Holding Company GroupContinental Indemnity Company | 2 | 2 | 01 15 | May 3, 2024 |
| American Family Insurance GroupMidvale Indemnity Company | 2 | 2 | 01 15 | Sep 28, 2023 |
| Copperpoint Group3 group companies filed it, led by Alaska National Insurance Company and CopperPoint Casualty Insurance Company | 2 | 1 | 01 15 | Jun 24, 2026 |
| Triangle Insurance Company, Inc. | 2 | 2 | 01 15 | Jul 24, 2023 |
How the largest insurers handle CU 21 35
Groups among the largest commercial umbrella and excess insurers that filed CU 21 35 or their own version in the past five years.
- Fairfax Financial GroupUses CU 21 35 in 1 filing
See more forms
Search related forms, compare editions, and research carrier filings with FilingFocus.
States
Number of filings that include CU 21 35 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 21 36Exclusion Of Punitive Damages Related To A Certified Act Of Terrorism49 filings
- CU 21 40Exclusion of Certified Nuclear, Biological, Chemical or Radiological Acts of Terrorism; Cap on Losses From Certified Acts of Terrorism47 filings
- CU 21 30Cap On Losses From Certified Acts Of Terrorism46 filings
- CU 21 31Exclusion of Other Acts of Terrorism Committed Outside the United States; Cap on Losses From Certified Acts of Terrorism45 filings
- CU 21 33Exclusion Of Certified Acts Of Terrorism45 filings
- CU 21 44Conditional Exclusion Of Terrorism (Relating To Disposition Of Federal Terrorism Risk Insurance Act)44 filings
- CU 21 45Conditional Exclusion of Terrorism Involving Nuclear, Biological or Chemical Terrorism (Relating to Disposition of Federal Terrorism Risk Insurance Act)41 filings
- CU 21 55Amended Terrorism Coverage - Covered Autos41 filings
- CU 27 01Exclusion Of Specific Accidents, Products, Work Or Location41 filings
- CU 21 46Exclusion Of Terrorism40 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Aug 11, 2026 | Philadelphia Indemnity Insurance Company | SC | 01 15 | PHLX-135041545 |
| Jul 2, 2026 | Zenith Insurance Company | CA | 01 15 | ZICO-134998423 |
| Jun 30, 2026 | Crestbrook Insurance Companyand 1 more | CO | 01 15 | NWPP-135003098 |
| Jun 26, 2026 | Church Mutual Insurance Company, S.I. | CO | 01 15 | CHMU-134995025 |
| Jun 24, 2026 | CopperPoint Casualty Insurance Companyand 1 more | SC | 01 15 | COPP-134996381 |
| Jun 19, 2026 | Acadia Insurance Companyand 4 more | CO | 01 15 | BNIC-134992811 |
| Jun 19, 2026 | Berkley Casualty Companyand 8 more | CO | 01 15 | BNIC-134992815 |
| Jun 19, 2026 | Addison Insurance Companyand 1 more | CO | 01 15 | UNFG-134979875 |
| Jun 15, 2026 | Sompo America Insurance Company | CO | 01 15 | SMPJ-134971280 |
| Jun 2, 2026 | Philadelphia Indemnity Insurance Company | IL | 01 15 | PHLX-134967828 |
| May 13, 2026 | Alaska National Insurance Company | SC | 01 15 | ALNI-134947655 |
| Feb 17, 2026 | Safety National Casualty Corporation | CO | 01 15 | 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
See more carrier forms
Search forms by carrier, line of business, state, and wording with FilingFocus.