Monika Sommer-Baumann
(2016 – 2021)
Ali Niederberger
(2009 – 2016)
Adrian Baumann
(2002 – 2009)
Erwin Bachmann
(1991 – 2002)
Udo Schmidt
(1975 – 1991)
Werner Schwander
(1973 – 1975)
Urs Fries
(1965 – 1973)
Albert Näf
(1958 – 1965)
Alois Bühlmann
(1957)
Gottfried Oswald
(1950 – 1957)
Hans Krauer, jun.
(1928 – 1950)
Leo Müller
(1920 – 1928)
Jakob Wolf, sen.
(1917 – 1920)
Fritz Wüest
(1910 – 1917)
Jakob Wolf, sen.
(1880 – 1910)