A.M. Best has affirmed the Financial Strength Rating of A- (Excellent) and the Long-Term Credit Rating of "a-" of Prism Assurance Ltd. (Prism) (Burlington, VT). The outlook of these Credit Ratings (ratings) is stable.

The ratings reflect Prism's balance sheet strength, which A.M. Best categorizes as strongest, as well as its adequate operating performance, limited business profile and appropriate enterprise risk management.

Additionally, the ratings support Prism's strategic role as a captive insurance company of Apogee Enterprises, Inc. (Apogee), and the parental support and financial flexibility available to Prism as a part of Apogee. Prism further benefits from its low overhead cost structure and extensive loss control programs, which have decreased claims frequency and severity across Apogee business units.

Source: A.M. Best Ratings Services, Inc. Used under license.