[1] Maranghi graduated from a high school run by the Piarist Fathers in Florence, later enrolling in the Faculty of Law at his local university.

Maranghi moved to Milan, where he studied at the Catholic University of The Sacred Heart and continued to read Law while working part-time as a journalist at the Il Sole newspaper.

Around this time Maranghi also worked in the offices of Remo Malinverni,[3] the General Director of the ORGA business consultancy institute, a pre-eminent Italian think-tank.

Maranghi held his office until April 13, 2003, when he resigned, following a long financial battle due to internal scandals and politics which precipitated inside the highest levels of executive management.

[2] When resigning Maranghi made sure that Mediobanca maintained independence by renouncing any personal benefits that were not already foreseen by his ordinary employment contract.