Stefan Siegenthaler
citizen of Trub, Fankhaus (Trub)
Commercial register
Secretary of the board of directors · joint signature by two · Trub
since Oct 12, 2026Vice-chair of the committee · joint signature by two · Hauterive (FR)
since Sep 17, 2026Chair of the executive board · joint signature by two · Bremgarten (AG)
since Dec 15, 2025Managing director · joint signature by two · Bremgarten (AG)
since Nov 14, 2025Delegate of the board of directors · sole signature · Langenthal
since Dec 8, 2022Managing director · sole signature · Bern
since Dec 9, 2021Owner · sole signature · Bolligen
since Aug 29, 2003Chair of the executive board · sole signature · Muri bei Bern
Managing director · sole signature
until Jun 30, 2026Managing director · sole signature
until Dec 9, 2021Managing director · sole signature
until Dec 27, 2013Mitglied des VR · (ohne Unterschrift) · Düdingen
until Jul 20, 2022sole procuration · Rheinfelden
until Sep 29, 2021sole procuration · Rheinfelden
until Sep 29, 2021Mitglied des VR · (ohne Unterschrift) · Düdingen
until Jul 22, 2021sole procuration · Rheinfelden
until Jul 21, 2021sole procuration · Rheinfelden
until Jul 21, 2021sole procuration · Zürich
until Jul 19, 2021sole procuration · Basel
until Jul 16, 2021sole procuration
until May 11, 2017sole procuration
until May 11, 2017Member of the board of directors · joint signature by two · Zwieselberg
until Sep 22, 2011