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Supplemental extended reporting period wording and examples

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Coverage description

A supplemental extended reporting period is an additional or optional tail period that extends the time to report covered claims after the policy period. The requirements for a supplemental reporting period can vary by product and coverage.

Coverage classification

Form type
Endorsements
Product lines
Directors & Officers LiabilityEmployment Practices LiabilityProfessional Errors & Omissions Liability

Compare Supplemental extended reporting period forms

Supplemental extended reporting period forms compared by Intent, Coverage context, Conditions
FormIntentCoverage contextConditions

The Cincinnati Indemnity Company

Claims-Made Excess Coverage Supplemental Extended Reporting Period Endorsement

XS 4042 04 24

Commercial Umbrella and Excess

Adds a supplemental reporting period to excess claims-made coverage.Excess coverage dependent on underlying insurance.Requires a valid and collectible primary supplemental reporting period for the same reporting period and timely payment.

Starr Indemnity and Liability Company

Manufacturers Errors and Omissions Liability Coverage - Supplemental Extended Reporting Period

SIGL-0620 06 26

Commercial General Liability

Provides a supplemental reporting period for manufacturers errors and omissions liability.Applies to the manufacturers errors and omissions coverage described in the endorsement.The schedule lists three-year and five-year periods; the endorsement requires timely payment of additional premium.

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Notable clauses

“covers the same reporting period as this endorsement”

The Cincinnati Indemnity Company · Claims-Made Excess Coverage Supplemental Extended Reporting Period Endorsement · XS 4042 04 24

Underlying period. The excess endorsement requires the primary supplemental period to cover the same reporting period.

“this endorsement will not take effect unless the additional premium for it is paid when due.”

Starr Indemnity and Liability Company · Manufacturers Errors and Omissions Liability Coverage - Supplemental Extended Reporting Period · SIGL-0620 06 26

Premium. The endorsement conditions taking effect on timely payment.

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Market activity

Matching form records, product lines, state activity, and recent examples for this coverage language.

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Supplemental extended reporting period wording map

Explore clusters of similar wording and outlying forms on the map. Select a point to see the associated forms.

Form group
Supplemental extended reporting period
190 forms on chart / latest Nov 10, 2026
More typical wording
Less typical wording
Each dot is a filed form in the selected group. Dots close together tend to use similar wording.
Multi-company use
Multiple products
Multi-state rollout
Single company/product
Larger dots appear in more filings for the selected group.
Wording signals
Most common wording
SUPPLEMENTAL EXTENDED REPORTING PERIOD ENDORSEMENT
GA 488 12 22
31 filings
The Cincinnati Casualty Company + 2 more
Commercial General Liability
Less common wording
EXTENDED REPORTING PERIODS – WAIVER OF DEDUCTIBLE FOR CLAIMS MADE DURING THE SUPPLEMENTAL EXTENDED REPORTING PERIOD
1325 PCOCW 10/25
33 filings
Medmarc Casualty Insurance Company
Product Liab - Occ/Claims Made + 1 more

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Endorsements

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Consent to settle endorsement

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