Editor's note: An earlier version of this story had the incorrect nationality for Kartochian. He is French.
Porsche Cars North America has appointed Thierry Kartochian as executive vice president and chief financial officer.
Kartochian, 43, was previously executive vice president of Porsche Business Services and CFO of Porsche Financial Services in Chicago -- posts he has held since October 2008. The appointment is effective immediately.
A native of France, Kartochian has been with Porsche since 1991 and has served as CFO and human resources director for the Porsche France Group.
He replaces Frank Hoffmann, 46, of Germany, who has left the company to pursue other interests, Porsche said. Porsche Cars North America is based in Atlanta.
Porsche's U.S. sales rose 22 percent to 13,687 vehicles during the first seven months of 2010 compared with the same period a year ago. Total U.S. sales increased 15 percent to 6.7 million vehicles.