Spinnaker Insurance Company has submitted a revised rating model for its Michigan homeowners program distributed through Hippo, accompanying a proposed 4.9% uncapped increase for HO3 policies.

The November 6 submission supports a separate rate-and-rule filing with updated rating factors developed using generalized linear modeling. Spinnaker said the changes are intended to better match premiums to risk and support profitable growth in Michigan.

The model documentation includes training and testing data, sample rating records and information on use in other states. According to the filing, related model filings have been implemented in Ohio and Illinois, while submissions in South Carolina and New Jersey remain pending.

Spinnaker requested effective dates of December 17, 2026, for new business and February 5, 2027, for renewals. The Michigan model filing is listed as “Submitted to State,” with no disposition recorded.