Barbara Diener
citizen of Zürich, Auenstein
Commercial register
Managing director · sole signature · Holderbank (AG)
since Apr 7, 2026Member of the foundation board · joint signature by two · Zürich
since Feb 16, 2026Member of the executive board · joint signature by two · Affoltern am Albis
until Aug 19, 2021joint procuration by two
until Aug 25, 2017