Zach Gassmann has been with Principal® since 2007. He received a master’s degree in financial management from Drake University and a bachelor’s degree in accounting from Simpson College. Mr. Gassmann has earned the right to use the Chartered Financial Analyst designation.

Jeff Callahan has been with Principal® since 2006. He earned a B.A. in Business Administration with an emphasis in Finance from Wartburg College and an M.B.A. form the University of Iowa. Mr. Callahan has earned the right to use the Chartered Financial Analyst designation.