Stefan Keller, Switzerland, Bussnang, male

Stefan Keller

Beta — errors possible

Active

Nationality: Switzerland

Residence: Bussnang

Place of origin: Kirchberg (SG)

Current Positions

gfs-befragungsdienst AGActive

Position: chairperson of the board

Authority: joint signing authority (any two to sign)

Sozio Trend GmbHActive

Position: LLC member and member of the management board

Authority: joint signing authority (any two to sign)

gfs-zürich, Markt- & Sozialforschung AGActive

Position: member of the board

Authority: joint signing authority (any two to sign)

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SOGC Notifications

No.	Journal No.	Journal date	SOGC date	Page / ID
1	13922	2026-03-19	2026-03-24	1006604546
2	2998	2026-01-19	2026-01-22	1006546181
3	797	2026-01-07	2026-01-12	1006533898
4	37396	2024-08-27	2024-08-30	1006117846