| Circular Number | Circular Title | Summary | State(s) |
| LI-CF-2026-169 | COMMERCIAL PROPERTY 2025 MULTISTATE FORMS REVISION TO BE IMPLEMENTED IN PENNSYLVANIA | ISO announces they are implementing new and revised commercial property multistate forms revisions in Pennsylvania. The changes are applicable to all policies written on or after September 1, 2026. | PA |
| LI-CF-2026-172 | PENNSYLVANIA RULE REVISION ADDRESSING SPACE WEATHER EXCLUSION TO BE IMPLEMENTED | ISO announces the implementation of filing CF-2026-OSWE2, after receiving approval from the Pennsylvania Insurance Department. The changes are applicable to all policies written on or after September 1, 2026. | PA |
| LI-MT-2026-026 | MOTORCYCLE RATING CODES UPDATED INFORMATION | ISO provides motor rating code information for new motorcycle types, available through VINMASTER Motorcycle. | All |
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Circular Tracker 4-17-26
A summary of the ISO Circular for April 17, 2026. Circulars provide a wide variety of information from form changes to rules, loss costs, experience reviews, and other information.
FC&S Editors | April 17, 2026