Mr. Luca Maestri is Independent Director of Principal Financial Group Inc., since February 01, 2012. Mr. Maestri has been Corporate Controller of Apple Inc., which designs and markets mobile communication and media devices and personal computers, since March 2013. He was Chief Financial Officer and an Executive Vice President of Xerox Corporation from February 2011 — February 2013 and Chief Financial Officer of Nokia Siemens Networks from 2008 — February 2011. Before joining Nokia, he held senior executive finance positions with General Motors Corporation. A 20-year employee of GM, he served as CFO of GM Europe and GM Brazil, and was executive-in-charge of the Fiat Alliance for GM Europe in Switzerland. Earlier in his career, Mr. Maestri was CFO of GM Thailand, director of operations analysis for GM Asia Pacific, and CFO of GM Ireland. Mr. Maestri received a bachelor's degree in economics from LUISS University in Rome in 1988, and a master's degree in science of management from Boston University in 1991.