Jean-Claude Portier

citizen of Meyrin, Onex

Commercial register

De Giuli & Portier Réalisation SA

Member of the board of directors · joint signature by two · Onex

since Oct 29, 2026
Foyer du Vallon (EMS pour personnes âgées aveugles ou malvoyantes)

membre* · joint signature by two · Chêne-Bougeries

since Jan 7, 2011
Association pour le bien des aveugles et malvoyants

membre* · joint signature by two · Genève

membre* · no signing authority

until Dec 27, 2024
De Giuli & Portier Architectes SA

Chair of the board of directors · joint signature by two · Onex

Chair of the board of directors · joint signature by two

until Aug 8, 2023

Secretary of the board of directors · joint signature by two

until Jun 22, 2016
dGPinvest Sàrl

Chair of the executive board · pour 100 parts de CHF 100 · sole signature · Onex

Chair of the executive board · pour 100 parts de CHF 100 · sole signature

until Aug 9, 2023
Fondation Terra et Casa

membre* · joint signature by two · Genève

Chair of the board of directors · joint signature by two

until Nov 15, 2016

Chair of the board of directors · joint signature by two

until Sep 28, 2012

membre* · joint signature by two

until Nov 23, 2006
Société Immobilière Versoix-Ville SA

Member of the board of directors · joint signature by two · Genève

Chair of the board of directors · joint signature by two

until Dec 15, 2016

Chair of the board of directors · joint signature by two

until Oct 2, 2012

Member of the board of directors · joint signature by two

until Aug 15, 2007