ISO endorsement · commercial general liability

CG 20 41 Additional Insured – Owners, Lessees Or Contractors – Completed Operations Subject To The General Aggregate

Withdrawn by ISO.

Filings
180
latest Oct 22, 2026
Filing companies
83
43 carrier groups
States
44
including DC
Latest edition
12 19
Dec 2019

Coverage description

An Insurance Services Office (ISO) standard form. It adds the person or organization shown in the schedule as an additional insured for injury or damage caused by your ongoing operations or completed work at the scheduled locations, limited to what the contract requires.

Editions

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

EditionFilingsCompaniesStatesFiled
12 19Dec 2019Latest1798344Dec 2021 to Oct 2026

1 other edition date appears in one or two filings each, often carrier-specific versions: 10/1/2020.

What the filings show

  • Edition in use: in the past 12 months, 26 companies filed the 12 19 edition.
  • CG 21 66 (Exclusion – Volunteer Workers As Insureds) is filed alongside it most often, in 147 of the same filings (82%).

Filed under

Commercial General Liability 155Other Liability 7Other Commercial Lines 6Commercial Package 5Other other liability 4

Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Oct 2026, excluding withdrawn and rejected filings.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 41, out of 43 in total.

CarrierFilingsStatesEditions, most filed firstLast filed
Insurance Services Office, Inc.Advisory Organization363612 19Apr 9, 2025
United Fire & CAS Group7 group companies filed it, led by United Fire and Casualty Company and Addison Insurance Company292812 19Dec 28, 2022
WCF Mutual Insurance Company GroupAssociated Indemnity Corporation161612 19Jan 15, 2026
Tokio Marine Holdings Incorporated Group4 group companies filed it, led by Safety National Casualty Corporation and TNUS Insurance Company8212 19Feb 17, 2026
Sompo GroupSompo America Insurance Company7212 19Jun 18, 2026
Grange Mutual CAS Group3 group companies filed it, led by Grange Indemnity Insurance Company and Grange Insurance Company6612 19Mar 28, 2024
Hastings Mutual Insurance Company6512 19Mar 13, 2025
Siriuspoint GroupSiriusPoint America Insurance Company6212 19Jun 15, 2026
Church Mutual GroupChurch Mutual Insurance Company, S.I.5212 19Jun 26, 2026
Markel Corporation GroupState National Insurance Company, Inc.5312 19Oct 22, 2026

How the largest insurers handle CG 20 41

Groups among the largest commercial general liability insurers that filed CG 20 41 or their own version in the past five years.

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States

Number of filings that include CG 20 41 in each state, Oct 2021 to Oct 2026. Darker states have more filings.

Tennessee: 3 filingsTN3Alabama: 1 filingAL1Florida: 0 filingsFLGeorgia: 3 filingsGA3Oklahoma: 3 filingsOK3South Carolina: 5 filingsSC5Arkansas: 3 filingsAR3Missouri: 4 filingsMO4Indiana: 5 filingsIN5Louisiana: 2 filingsLA2Ohio: 3 filingsOH3Wisconsin: 4 filingsWI4Texas: 2 filingsTX2Kentucky: 3 filingsKY3Iowa: 4 filingsIA4Kansas: 3 filingsKS3Mississippi: 2 filingsMS2North Carolina: 0 filingsNCNebraska: 2 filingsNE2South Dakota: 1 filingSD1Montana: 4 filingsMT4New Hampshire: 0 filingsNHVirginia: 2 filingsVA2Arizona: 1 filingAZ1Pennsylvania: 4 filingsPA4Rhode Island: 1 filingRI1Michigan: 1 filingMI1Alaska: 0 filingsAKDistrict of Columbia: 1 filingDC1Idaho: 4 filingsID4Maryland: 1 filingMD1West Virginia: 1 filingWV1Utah: 2 filingsUT2Wyoming: 3 filingsWY3Delaware: 0 filingsDENew Mexico: 4 filingsNM4Colorado: 30 filingsCO30Connecticut: 1 filingCT1Maine: 1 filingME1North Dakota: 2 filingsND2Illinois: 10 filingsIL10Minnesota: 0 filingsMNNew Jersey: 1 filingNJ1New York: 0 filingsNYMassachusetts: 1 filingMA1Washington: 7 filingsWA7Oregon: 3 filingsOR3Vermont: 1 filingVT1California: 38 filingsCA38Nevada: 2 filingsNV2Hawaii: 1 filingHI1
FewerMore filingsNone

Often filed with

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

  • CG 21 66Exclusion – Volunteer Workers As Insureds147 filings
  • CG 21 37Exclusion – Employees And Volunteer Workers As Insureds140 filings
  • CG 20 15Additional Insured – Vendors139 filings
  • CG 20 43Additional Insured – Automatic Status When Required in Written Contract or Agreement138 filings
  • CG 20 44Additional Insured – Vendors – Automatic Status When Required in Agreement138 filings
  • CG 20 26Additional Insured – Designated Person or Organization137 filings
  • CG 40 14Cannabis Exclusion136 filings
  • CG 20 28Additional Insured – Lessor of Leased Equipment134 filings
  • CG 22 69Pharmacists134 filings
  • CG 20 36Additional Insured – Grantor of Licenses133 filings

Recent filings

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

SubmittedCompanyStateEditionsTracking number
Oct 22, 2026State National Insurance Company, Inc.CO12 19STNA-135128706
Oct 21, 2026Allied Insurance Company of Americaand 4 moreCA12 19NWPP-G135131050
Jun 26, 2026Church Mutual Insurance Company, S.I.CO12 19CHMU-134947220
Jun 24, 2026Southern Trust Insurance CompanyGA12 19STTR-134864949
Jun 18, 2026Sompo America Insurance CompanyCO12 19SMPJ-134985965
Jun 17, 2026Atlantic Specialty Insurance CompanyNM12 19BEAC-134983795
Jun 15, 2026SiriusPoint America Insurance CompanyCO12 19MRTN-134978899
Jun 15, 2026SiriusPoint America Insurance CompanyCO12 19MRTN-134978902
Jun 2, 2026Zenith Insurance CompanyCA12 19ZICO-134965759
Mar 20, 2026American Casualty Company of Reading, Pennsylvaniaand 5 moreCO12 19CNAB-134872676
Feb 24, 2026American Casualty Company of Reading, Pennsylvaniaand 5 moreSC12 19CNAB-134851008
Feb 17, 2026Safety National Casualty CorporationCO12 19SFCC-134814522

Most filed ISO CG forms

All Commercial General Liability (ISO CG) forms

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