Based on AM Best's analysis, 000442 - Grinnell Mutual Reinsurance Company is the AMB Ultimate Parent and identifies the topmost entity of the corporate structure. View a list of operating insurance entities in this structure.
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Press Release AM Best Assigns Ratings to Grinnell Compass, Inc.; Affirms Ratings of Grinnell Mutual Reinsurance Company and Its Subsidiary February 14, 2023
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