About us

Arnaud Jacquemin is appointed Head of Societe Generale Securities Services in September 2023.

He joined Societe Generale Group in 1993 within the corporate and investment bank, where he worked in a number of positions both in France and the USA, notably in project finance then as head of strategy for SG CIB. In 2003, he joined the Finance and Development division as Deputy Head, then Head of Financial Management. In 2008, he was appointed Group Deputy Chief Financial Officer. In 2012 he joined the Risk division as Deputy Chief Risk Officer. He was appointed Group Deputy General Secretary in 2015, notably heading the transformation of the Compliance division, and Deputy Head of Group Compliance in 2017. In June 2018, he became Group Country Head for Luxembourg and CEO of Societe Generale Luxembourg, which conducts all Group businesses in Luxembourg.

Arnaud Jacquemin is a graduate of the École polytechnique and the Ecole nationale des ponts et chaussées.

Alexandra Chauvel is appointed Co-Head of Coverage, Marketing & Solutions in September 2021. She began her career at A.T.Kearney where, over eight years, she took part in the development of the Financial Institution Practice. Early 2007, Alexandra joined Societe Generale as Audit Worldwide Coordinator on SGCIB Client Coverage and Structured Finance activities. In parallel, Alexandra created the module “Pratique du Conseil” in the Finance and Strategy Master at Paris Institute of Political Studies. Early 2013, she joined the Commercial Direction of Private Banking, to create the Credit Advisor function, and then mid-2015 the KYC Advisor function. In addition to the management of 70 deal-structuring experts, she initiated and achieved several client service improvement projects on credit granting and on-boarding, whether in terms of offer, processes or digital solutions. 

Alexandra Chauvel graduated from ESCP (1998).

Gildas Le Treut is appointed Co-Head of Coverage, Marketing & Solutions in September 2021. He joined SGSS as Head of Sales and Relationship Management in May 2018 after 11 years at ABN Amro Clearing. Since 2007, he has been successively Managing Director of the branch in France (Fortis Bank Nederland), Global Head of Product & Network Management and Global Director of Prime Services. He has developed ABN AMRO Clearing franchise for institutional investors, banks, asset managers and hedge funds. He started his career in 1996 at BNP Paribas Securities Services in the equity clearing team where he occupied various positions before being promoted as Sales & Relationship Manager for Continental Europe.

Gildas Le Treut has a Masters degree in Bank & Finance from Sorbonne University.

Lionel Duvernay is appointed Head of Chief Administrative Office in May 2021. He is also Head of SGSS' trustee and depositary bank function in France, in charge of relations with the French regulatory supervisor, the Autorité des Marchés Financiers (AMF), since October 2022.

He joined Societe Generale in 1998 in the General Inspection department. In 2005, he was appointed Head of Debt Capital Market Operations in Europe, then in the US, covering middle and back office functions for Securitization. In New York, he is subsequently appointed Chief of Staff to the COO Americas in 2008. After an experience of Program management within MARK/CTY, he became in 2012 Chief Financial Officer for GLFI (Global Finance) and CORI (Coverage & Corporate Finance) Business Units. In 2017, with the creation of DFIN/DTO (Digital & Transformation Office), he took the worldwide responsibility of DFIN project management teams.

Lionel is a graduate of Telecom SudParis and HEC Paris. 

Gaëlle Duclos is Head of Fund Services Operations and Securities Banking Operations within Societe Generale Securities Services (SGSS). She is also a member of SGSS' Executive Committee.

Gaëlle Duclos started her career in 1993 at Indosuez, first within General Inspection and then as Business Associate in charge of North Asia (export credits). She joined Societe Generale group in 2003 within the Corporate and Investment Bank where she held various positions in Capital Market and Structured Finance Operations, then in International Private Banking Operations. In addition to her position as Head of Fund Services Operations since 1 July 2019, she was appointed Head of Securities Banking Operations on 2 January 2024.

Mathilde Guérin began her career at Societe Generale in 1991 and held various positions within the investment bank and the Custody Services Department, where she managed transversal studies and project coordination. She participated in the analysis of all IT and operational aspects of the SGSS acquisition of UniCredit’s securities services in 2005. She was then appointed programme manager for the migration of Pioneer Asset Management’s Luxembourg funds. In 2008, Mathilde Guérin became Global Relationship Manager of Pioneer Asset Management, before being appointed Global Head of Sub-custody Network Management in 2011, followed by her appointment as Head of Product Engineering in 2016, in charge of developing SGSS products and solutions.

Mathilde is a graduate of the Ecole des Mines (Engineering School) in Saint-Etienne, France.