ISO condition · commercial umbrella

CU 24 77 Noncontributory And Order Of Response – Other Insurance Condition

Filings
87
latest Aug 11, 2026
Filing companies
35
15 carrier groups
States
46
including DC
Latest edition
12 23
Dec 2023

Coverage description

An Insurance Services Office (ISO) standard form. It makes the umbrella apply before, and not seek contribution from, other insurance of an additional insured shown in the Schedule when that party is a Named Insured on the other policy and you agreed to this in a written contract.

Editions

Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.

EditionFilingsCompaniesStatesFiled
12 23Dec 2023Latest873546Feb 2023 to Aug 2026

What the filings show

  • Edition in use: in the past 12 months, 11 companies filed the 12 23 edition.
  • CU 21 86 (Exclusion – Access Or Disclosure Of Confidential Or Personal Material Or Information) is filed alongside it most often, in 85 of the same filings (98%).

Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Aug 2026, excluding withdrawn and rejected filings.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 24 77, out of 15 in total.

CarrierFilingsStatesEditions, most filed firstLast filed
Insurance Services Office, Inc.Advisory Organization393912 23Nov 3, 2023
Nationwide Corporation Group3 group companies filed it, led by Nationwide Mutual Insurance Company and Crestbrook Insurance Company131112 23Jun 30, 2026
Grinnell Mutual GroupGrinnell Mutual Reinsurance Company101012 23Mar 26, 2024
Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety National Casualty Corporation and Philadelphia Indemnity Insurance Company5312 23Aug 11, 2026
Church Mutual GroupChurch Mutual Insurance Company, S.I.3212 23Jun 26, 2026
Sompo GroupSompo America Insurance Company3112 23Jun 15, 2026
Amtrust Financial Services Group7 group companies filed it, led by AmTrust Insurance Company of Kansas, Inc. and CorePointe Insurance Company2112 23Aug 8, 2023
Berkshire Hathaway Group2 group companies filed it, led by The Medical Protective Company and Wellfleet Insurance Company2212 23Jun 30, 2026
Mountain West Farm GroupMountain West Farm Bureau Mutual Insurance Company2212 23Dec 5, 2023
United Fire & CAS Group2 group companies filed it, led by Addison Insurance Company and United Fire and Casualty Company2212 23Jun 19, 2026

How the largest insurers handle CU 24 77

Groups among the largest commercial umbrella and excess insurers that filed CU 24 77 or their own version in the past five years.

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States

Number of filings that include CU 24 77 in each state, Oct 2021 to Aug 2026. Darker states have more filings.

Tennessee: 2 filingsTN2Alabama: 1 filingAL1Florida: 0 filingsFLGeorgia: 2 filingsGA2Oklahoma: 1 filingOK1South Carolina: 2 filingsSC2Arkansas: 1 filingAR1Missouri: 2 filingsMO2Indiana: 2 filingsIN2Louisiana: 1 filingLA1Ohio: 3 filingsOH3Wisconsin: 1 filingWI1Texas: 0 filingsTXKentucky: 1 filingKY1Iowa: 2 filingsIA2Kansas: 1 filingKS1Mississippi: 0 filingsMSNorth Carolina: 1 filingNC1Nebraska: 2 filingsNE2South Dakota: 1 filingSD1Montana: 2 filingsMT2New Hampshire: 2 filingsNH2Virginia: 1 filingVA1Arizona: 1 filingAZ1Pennsylvania: 1 filingPA1Rhode Island: 0 filingsRIMichigan: 1 filingMI1Alaska: 1 filingAK1District of Columbia: 1 filingDC1Idaho: 1 filingID1Maryland: 2 filingsMD2West Virginia: 1 filingWV1Utah: 2 filingsUT2Wyoming: 3 filingsWY3Delaware: 1 filingDE1New Mexico: 1 filingNM1Colorado: 15 filingsCO15Connecticut: 1 filingCT1Maine: 1 filingME1North Dakota: 2 filingsND2Illinois: 8 filingsIL8Minnesota: 1 filingMN1New Jersey: 0 filingsNJNew York: 1 filingNY1Massachusetts: 1 filingMA1Washington: 3 filingsWA3Oregon: 2 filingsOR2Vermont: 1 filingVT1California: 1 filingCA1Nevada: 2 filingsNV2Hawaii: 1 filingHI1
FewerMore filingsNone

Often filed with

Standard-style form numbers that appear in the same filings most often.

  • CU 21 86Exclusion – Access Or Disclosure Of Confidential Or Personal Material Or Information85 filings
  • CU 34 56Exclusion – Cyber Incident85 filings
  • CU 00 05Exclusion - Violation Of Law Addressing Data Privacy83 filings
  • CU 04 02Loss Of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion72 filings
  • CU 22 37Motor Carrier Endorsement71 filings
  • CU 34 55Exclusion - Electronic Data - Deletion Of Bodily Injury Exception71 filings
  • CU 04 54Loss of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion - Deletion Of Bodily Injury Exception70 filings
  • CU 21 88Exclusion - Access Or Disclosure Of Confidential Or Personal Material Or Information (Coverage B Only)70 filings
  • CU 04 98Cyber Incident Liability Coverage Subject To Each Cyber Incident Occurrence And Aggregate Limits69 filings
  • CU 04 99Cyber Incident Liability Coverage And Loss Of Electronic Data Liability Coverage Subject To Loss Of Electronic Data, Each Cyber Incident Occurrence And Aggregate Limits69 filings

Recent filings

Latest filings that include this form number. Filed copies open in FilingFocus.

SubmittedCompanyStateEditionsTracking number
Aug 11, 2026Philadelphia Indemnity Insurance CompanySC12 23PHLX-135041545
Jun 30, 2026The Medical Protective Companyand 1 moreIL12 23MDPC-135002488
Jun 30, 2026Crestbrook Insurance Companyand 1 moreCO12 23NWPP-135003098
Jun 26, 2026Church Mutual Insurance Company, S.I.CO12 23CHMU-134995025
Jun 19, 2026Addison Insurance Companyand 1 moreCO12 23UNFG-134979875
Jun 15, 2026Sompo America Insurance CompanyCO12 23SMPJ-134971280
Jun 2, 2026Philadelphia Indemnity Insurance CompanyIL12 23PHLX-134967828
Feb 17, 2026Safety National Casualty CorporationCO12 23SFCC-134815068
Jan 28, 2026Truck Insurance ExchangeIL12 23FARM-134815661
Nov 22, 2025The Medical Protective Companyand 1 moreWA12 23MDPC-134692417
Aug 27, 2025Church Mutual Insurance Company, S.I.IL12 23CHMU-134623640
Aug 14, 2025Church Mutual Insurance Company, S.I.CO12 23CHMU-134605978

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