| Circular Number | Circular Title | Summary | State(s) |
| LI-CM-2026-006 | COMMERCIAL INLAND MARINE MULTISTATE ADVISORY PROSPECTIVE LOSS COST REVISION TO BE IMPLEMENTED IN VARIOUS JURISDICTIONS | ISO announces they are implementing the commercial inland marine multistate loss cost revision in the 38 listed jurisdictions, after receiving the necessary approvals from the insurance departments. The changes are applicable to all policies written on or after October 1, 2026. | AK, AR, AZ, CO, CT, DE, HI, IA, ID, IL, IN, KS, KY, MD, ME, MI, MN, MO, MT, ND, NE, NH, NJ, NM, NV, OH, OK, OR, PA, RI, SD, TN, UT, VT, WA, WI, WV, WY |

