OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has assigned indicative Long-Term Issue Credit Ratings of “a-” to senior unsecured debt, “bbb+” to subordinated debt and “bbb” to preferred shares of the recently filed universal shelf registration of Principal Financial Group, Inc. (Principal) (headquartered in Des Moines, IA) [NYSE:PFG]. The outlook assigned to the Credit Ratings (ratings) is stable. The new shelf registration was filed on May 3, 2017 and replaces Principal’s previous shelf. Consequen