DES MOINES, Iowa--(BUSINESS WIRE)--Principal Financial Group, Inc. (NYSE: PFG) announced today that Dan Houston, president and chief executive officer, will participate in a fireside chat at the KBW 2015 Insurance Conference on Sept. 9, 2015 at 2:45 p.m. (ET) in New York. The discussion will include in-depth information about the company’s successful investment management strategy and opportunities for continued growth. Parties interested in listening to the discussion live may access the webca