Our Management Board


Yves Maas
Chief Executive Officer

Yves Maas holds a language degree from Universität des Saarlandes.

 In 1989, he embarked on his professional career at Cedelbank Luxembourg (now Clearstream) as Customer Services Officer. He remained with Cedelbank until 1999 and held various senior positions including Director for Product Development and Member of the Executive Management Board.

In 1999, Yves joined Credit Suisse Private Banking as Head of Securities & Treasury, IT & Operations and Member of the Executive Board, where he managed a staff of 2200 employees. In 2001, he became Member of the Management Committee Technology & Operations and Head of Private Banking Operations Switzerland, managing operations functions for all Swiss based booked business.

From 2004 to 2012, Yves held the position of Head of International Operations of the Private Banking Division of Credit Suisse Zurich. In April 2012, Yves returned to Luxembourg to become CEO and Member of the Board of Credit Suisse Luxembourg S.A. and Country Head Credit Suisse Luxembourg, which includes the management of CS Luxembourg branches in Greece, Portugal and Austria.

Since March 2017, Yves Maas holds the position of Chairman of the Board of Credit Suisse Luxembourg S.A.

Yves Maas was Chairman of the Luxembourg Bankers’ Association (ABBL) from April 2014 to April 2018 and Vice-Chairman from April 2018 – June 2020. He was appointed CEO in December 2019.

Catherine Bourin
Member of the Management Board

Catherine Bourin holds a Doctorate in European Law from the University of Rennes and a Masters’ degree in European Law from the University of Exeter (UK). After 3 years as legal researcher at the Laboratoire de Droit Economique (University of Luxembourg), she joined the ABBL in 1999 as legal adviser. In 2011, she became Head of Legal Affairs.

Since 2013, she is Member of the Management Board in charge of the ABBL Sustainability and Conduct Department, which covers Sustainable Finance, CSR, Compliance, Social Affairs as well as Financial Education.

She represents the ABBL in a number of Committees at the Luxembourg Central Bank (BCL), the Commission de Surveillance du Secteur Financier (CSSF), the European Banking Federation (EBF), the Luxembourg Federation of Employers (UEL), the Ministry of Finance, the Ministry of Justice as well as the Ministry of Economy. Furthermore, she is President of the Association pour la santé au travail dans les secteurs tertiaire et financier (ASTF). Catherine is a Board member of the Association Luxembourgeoise des Juristes de Droit Bancaire (ALJB), the Association Européenne des Juristes de Droit Bancaire (AEDBF) and LuxFLAG.

Catherine Bourin is also lecturer at the University of Luxembourg.


Camille Seillès
Secretary General
Member of the Management Board

Camille Seillès is Secretary General of the ABBL since 2017 and a member of its Management Board since 2018. He is in charge of tax dossiers, marketing & business development, the corporate secretariat, accounting and facility management. He supervises the management of the Private Banking Cluster and the Corporate Finance, Capital Markets and Cash Management Cluster.

A lawyer by background, Camille holds a Master of Laws (LL.M.) in international business law from King’s College London and a Masters’ Degree in business taxation from the University of Paris-Dauphine. He received his initial legal training at the University of Cologne and the University of Paris I Panthéon-Sorbonne. He was admitted as avocat à la Cour in Luxembourg in 2008 (on hold since 2012). He joined the ABBL in 2012 as legal and tax advisor.

A recognised expert in the field of taxation, Camille is Chair of the Fiscal Committee of the European Banking Federation (EBF) and a member of the Committee on Taxation and Fiscal Policy at the Business and Industry Advisory Group to the OECD (BIAC). He is also involved in the work of the International Banking Federation (IBFed) as regards taxation. Until June 2017, he was a member of the European Commission’s Expert Group on automatic exchange of financial account information. In Luxembourg, Camille is on the panel of tax experts advising the Economic and Social Council and the Luxembourg Federation of Employers (UEL).