AM Best Upgrades Credit Ratings of OneBeacon U.S. Holdings, Inc. and Its Subsidiaries

March 19, 2019

AM Best Upgrades Credit Ratings of OneBeacon U.S. Holdings, Inc. and Its Subsidiaries; Affirms Credit Ratings of Intact Insurance Company and Its Subsidiaries

OLDWICK, N.J., March 8, 2019—AM Best has upgraded the Financial Strength Rating (FSR) to A+ (Superior) from A (Excellent) and the Long-Term Issuer Credit Ratings (Long-Term ICR) to “aa-” from “a+” of Atlantic Specialty Insurance Company (Atlantic Specialty) (New York, NY) and its subsidiaries (formerly known as OneBeacon Insurance Group). At the same time, AM Best has upgraded the Long-Term ICR to “a-” from “bbb+”and the Long-Term Issue Credit Ratings (Long-Term IRs) of OneBeacon U.S. Holdings, Inc. (Delaware). Concurrently, AM Best has affirmed the FSR of A+ (Superior) and the Long-Term ICRs of “aa-” of Intact Insurance Company (Ontario, Canada) and its wholly owned subsidiaries (formerly known as Intact Insurance Group). Also, AM Best has affirmed the Long-Term ICR of “a-” and the Long-Term IR of the parent holding company, Intact Financial Corporation (Intact Financial) (Ontario, Canada) [TSX: IFC]. The outlook of these Credit Ratings (ratings) is stable. (Please see link below for a detailed list of the companies and Long-Term IRs.)\

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