| Circular Number | Circular Title | Summary | State(s) |
| LI-CF-2026-119 | COMMERCIAL PROPERTY 2025 MULTISTATE FORMS AND RULES REVISIONS IN SPECIFIC JURISDICTIONS UPDATE PROVIDED | ISO announces they will submit filings withdrawing endorsement CP 10 79 Space Weather Exclusion and introducing a new mandatory endorsement in the listed jurisdictions. They caution the filing has not yet been implemented. | NC, PA, WV |
| LI-DP-2026-021 | DELAWARE DWELLING REVISED ADVISORY PROSPECTIVE LOSS COSTS FILED; TABLES AND EXHIBITS NEWLY PRESENTED IN EXCEL | ISO announces a -4.5% change from the current loss costs for dwelling property in the state of Delaware. They caution the filing has not yet been implemented. | DE |
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Circular Tracker 3-25-26
A summary of the ISO Circular for March 25, 2026. Circulars provide a wide variety of information from form changes to rules, loss costs, experience reviews, and other information.
FC&S Editors | March 25, 2026