Insurance products from the Principal Financial Group® are issued by Principal National Life Insurance Company (except in New ... York), Principal Life Insurance Company, and the companies available through the Preferred Product Network, Inc. Securities and advisory products offered through Princor Financial Services Corporation, 800/247-1737, member SIPC. Principal National, Principal Life, the Preferred Product Network and Princor® are members of the Principal Financial Group®, Des Moines, IA 50392. The Centennial Group is not an affiliate of any company of the Principal Financial Group®. read more