The head of the IMF, Christine Lagarde, has been found guilty on a French court of negligence but was given no jail sentence.

http://www.npr.org/sections/thetwo-way/2016/12/19/506140852/imfs-christine-lagarde-found-guilty-of-negligence-over-2008-dispute

A French court found Christine Lagarde, the current head of the International Monetary Fund, guilty of negligence for improperly overseeing a 2008 case when she was France's finance minister.
The Court of Justice of the Republic, which oversees cases related to alleged misconduct by government officials, did not sentence Lagarde to any prison time, The New York Times reported.