Zurich filed updates to its Property Portfolio Protection (P3) commercial package program in Montana, introducing changes to how catastrophe-related coverages are rated. The filing replaces RMS’s Risk Modeler with Verisk’s Touchstone catastrophe model for earthquake and named storm pricing within the insurer’s Property Portfolio Protection product.

“We reviewed the Verisk model and determined it to be a more advanced view of catastrophe risk.”

According to the filing, the change affects the rating methodology used to determine premiums for certain catastrophe exposures rather than the underlying coverage itself. Zurich said the update is intended to enable the use of Verisk’s modeling capabilities for earthquake and named storm risk assessments. The filing applies to the Property Portfolio Protection program offered by American Zurich Insurance Company, American Guarantee and Liability Insurance Company, Zurich American Insurance Company of Illinois, and Zurich American Insurance Company.

The filing was submitted on June 11, 2026, and is effective March 1, 2027, for both new and renewal business.

While most participating entities showed no rate impact, Zurich American Insurance Company reported an overall rate impact of -2.67%, representing a projected written premium decrease of approximately $47,438 across 79 affected policyholders in Montana.