David Byrom

citizen of La Rippe, Pregny-Chambésy

Commercial register

Société d'Etudes Techniques et Economiques S.à r.l., Luxembourg, succursale de Genève

sole signature · Genève

since Feb 18, 2026
DB Corporate Services Sàrl

Managing director · pour 200 parts de CHF 100 · sole signature · Genève

since Feb 13, 2026
Société d'Etudes Techniques et Economiques S.à.r.l., Luxembourg, succursale de Nyon

sole signature · Nyon

since Jun 6, 2025
Quadrima SA, en liquidation

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

since Jul 15, 2015
Fondation de l'Institut Ecoplan pour l'analyse, la planification et la gestion de l'environnement, en liquidation

membre* · joint signature by two · Meyrin

since Apr 12, 2011
SI Arima B SA

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

since Jul 28, 2009
SI Quadrilatère SA

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

since Nov 22, 2007
SI Arima C SA

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

since Sep 7, 2007
SI Arima D SA, en liquidation

Vice-chair of the board of directors · joint signature by two · Genève

since Aug 31, 2007
GENBERGUES 1 SA

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

since Nov 30, 2006
GENBERGUES 2 SA

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

since Nov 30, 2006
GENBERGUES 3 SA

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

since Nov 30, 2006
GENBERGUES 4 SA

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

since Nov 30, 2006
GENBERGUES 5 SA

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

since Nov 30, 2006
GFO SA

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

Société Immobilière de la Petite Gryonne SA

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

until Feb 21, 2020
HARDSTONE SERVICES SA

joint procuration by two · Genève

until Nov 28, 2019
MENKAB SA

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

until Nov 27, 2019
Société d'Etudes techniques et économiques SA

joint procuration by two · Genève

until Nov 11, 2019
NATIBES HOLDING SA

Secretary of the board of directors · sole signature · Genève

until Mar 12, 2019

Member of the board of directors · sole signature

until Dec 17, 2010
Nyctis S.A.

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

until Mar 11, 2019
Fondation Latsis Internationale

Director · joint signature by two · Genève

until Dec 6, 2018
VAUGLAND SA

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

until Dec 14, 2012
GENBERGUES 6 SA

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

until Nov 5, 2012