He was recruited as joint chief executive in 1993 after criticism of Lonrho's longtime leader, Roland Rowland, who was ousted the following year.
He had been joint chief executive.
Mr. Bartle, 54, joint chief executive at Bartle Bogle, is the first founder to leave.
Mr. de Pury and Ms. Luxembourg, both former Sotheby's employees, will be joint chief executives.
The elections are important because they are intended to create joint executive and legislative structures that will eventually unify Bosnia under a single government, if the peace agreement works.
The highest paid is Joanna Killian, joint chief executive of Essex and Brentwood councils, who received £289,143, an increase of £4,000.
Later on his sons became joint chief executives.
Sons, Steven and Peter, became joint chief executives.
Fiat said that Mr. Galateri, 55, who took the job of joint chief executive only in June, would step down as soon as a successor was named.
In 2000, he took over as joint chief executive when John Duffield left over disagreements with the management of Commerzbank.