Alain Sierro

citizen of Hérémence, Nyon

Commercial register

NORINVEST HOLDING SA

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

since Oct 17, 2025
Gondrand Holding AG

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

since Feb 15, 2024
Gondrand Properties Switzerland AG

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

since Feb 15, 2024
Sored S.A.

Member of the board of directors · joint signature by two · La Chaux-de-Fonds

since Dec 30, 2021
SUNPARTNERS SA

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

since Apr 21, 2020
Banque Cramer & Cie SA

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

since Jun 26, 2019
AA Development Luxembourg, succursale de Vaud

sole signature · Nyon

since May 7, 2019
SFO Partners Consulting Sàrl

Chair of the executive board · pour 200 parts de CHF 100 · sole signature · Genève

since Apr 7, 2017
Banque de Patrimoines Privés Genève BPG SA

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

since May 26, 2009
Chestone SA

Member of the board of directors · sole signature · Genève

Golay-Buchel Holding S.A.

Delegate of the board of directors · joint signature by two · Lausanne

Louis Golay International SA

Member of the board of directors · sole signature · Lonay

SFO PARTNERS SA

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

Vadai Immobilier Sàrl

Managing director · sole signature · Sion

Chestone SA

Chair of the board of directors · sole signature · Genève

until Feb 14, 2025
Walmar Holding SA

Member of the board of directors · sole signature · Sion

until Feb 13, 2025
SARVA HOLDING SA

Member of the board of directors · sole signature · Lugano

until Oct 16, 2024
Maniss Immobiliare SA

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

until Feb 20, 2024
SFO PARTNERS SA

Chair of the board of directors · sole signature · Genève

until Dec 13, 2023
Chestone SA

Member of the board of directors · sole signature · Genève

until Jul 12, 2023
Mencey Capital Management SA

sole procuration · Genève

until Feb 13, 2023
Y-Alva SA

Chair of the board of directors · sole signature · Genève

until Dec 12, 2022
Vadai Immobilier Sàrl

Managing director · sole signature · Sion

until May 3, 2018
Mencey Capital Management SA

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

until Mar 31, 2016
Louis Golay International SA

Chair of the board of directors · sole signature · Lonay

until Mar 24, 2016
Louis Golay International SA

Member of the board of directors · sole signature · Lonay

until Jul 11, 2012
NORINVEST HOLDING SA

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

until Nov 4, 2011
Banque Cramer & Cie SA

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

until May 20, 2011
Golay-Buchel Holding S.A.

Director · joint signature by two · Lausanne

until Mar 18, 2009
Banque Cramer & Cie SA

Chair of the executive board · joint signature by two · Genève

until Nov 5, 2008
Mont-Blanc Financial Services Ltd, in liquidation

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

until Aug 22, 2008
Banque Cramer & Cie SA

Director · joint signature by two · Genève

until Jul 2, 2007
Banque Cramer & Cie SA

Director · joint signature by two · Genève

until Mar 11, 2005
DynaCapital SA

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

until Dec 19, 2003
DynaCapital SA

Director · joint signature by two · Genève

until Aug 28, 2000