Pietro Campilli [it] (Italy): February 1958 – May 1959 Paride Formentini [it] (Italy): June 1959 – September 1970 Yves Le Portz (France): September 1970 – July 1984 Ernst-Günther Bröder (Germany): August 1984 – March 1993 Sir Brian Unwin (UK): April 1993 – December 1999 Philippe Maystadt (Belgium): March 2000 – December 2011 Werner Hoyer (Germany): January 2012 – present[26]