Grinnell Compass, Inc. has filed for rate and rule revisions to its personal auto program in Wisconsin, with changes set to take effect February 1, 2026, for new business and April 1, 2026, for renewals. The filing, dated September 17, 2025, affects 2,177 policyholders and reflects a written premium reduction of $390,037 on total written premiums of $4.48 million.

The revisions produce an overall rate decrease of 8.7%, compared to an indicated change of negative 4.8%. Adjustments are centered on rating factors, including age, gender, marital status, and deductible factors. The filing also notes the use of competitive analysis in developing factors for the number of drivers and vehicles.

The submission marks a shift toward lower pricing in Grinnell’s Wisconsin personal auto segment, standing out in contrast to the more frequent incremental increases seen across the market.