Corporate governance

Meet the members of our Authorized Management Committee and Board of Directors.
Chris Allen
Chris Allen serves as Group CEO at Quintet Private Bank. Allen previously served as Head of Global Private Banking, EMEA, at HSBC. Over 15 years at that firm, he held a series of roles of increasing responsibility, including CEO, Alternative Investments, and CEO, HSBC Private Bank UK. Earlier in his career, he served as Executive Director at Colliers Capital, where he focused on growing the firm’s fund management business, and as Head of Real Estate Fund Management at a major Middle East bank. Allen holds a degree and investment diploma from Sheffield, City and Cambridge universities.

Nicholas Harvey
Nicholas Harvey serves as Group CFO and member of the Authorized Management Committee at Quintet Private Bank. Most recently Deputy CEO of Precision Capital, Harvey earlier served as Chief Risk Officer and Member of the Management Board at Amlin Europe. He also advised banks and insurers across Europe for 10 years as a consultant with McKinsey. English by birth but raised in Belgium, Harvey graduated from Louvain University in Belgium and holds an MBA from Kellogg in the United States.

Simon Spilsbury
Simon Spilsbury serves as Group Chief Compliance Officer at Quintet Private Bank and, subject to regulatory approval, member of the Authorized Management Committee. Spilsbury previously served as Regional Chief Compliance Officer, Continental Europe, at HSBC in Paris, where he was responsible for activities in 19 countries across multiple business lines, including private banking and asset management. Earlier in his career, he served at firms such as Credit Suisse, Deutsche Bank and Citibank. He holds certifications from the International Capital Markets Association and Financial Industry Regulatory Authority.
Thomas Rodermann
Thomas Rodermann serves as CEO, Quintet Europe, and member of the Authorized Management Committee at Quintet Private Bank. Previously, Rodermann served at UBS Europe SE as Chairman of the Board of Directors with responsibility for wealth management activities in European markets such as Austria, Denmark, Germany, Italy, Luxembourg, Spain and Sweden, while also personally advising select clients. Between 1990-2015, he held a series of roles of increasing responsibility at Dresdner Bank and Deutsche Bank, rising to the position of CEO of Deutsche Bank Privat- und Geschäftskunden AG.

Eli Leenaars
Eli Leenaars serves as Group Chief Operating Officer and member of the Authorized Management Committee at Quintet Private Bank. Previously Group Managing Director and Vice-Chairman, Global Wealth Management, at UBS, Leenaars has more than 30 years of international experience in the financial services sector. He earlier served for nearly a quarter-century at ING Group, where he rose to the position of member of the Executive Board of ING Group, ING Bank and ING Insurance. Leenaars serves on the Board of Directors of a range of industry associations and non-profit organizations.

Philip Tremble
Philip Tremble serves as Group Chief Risk Officer and member of the Authorized Management Committee at Quintet Private Bank, a position he assumed in March 2021. He most recently served for eight years as Chief Risk Officer, Global Private Banking, at HSBC. Tremble is a British national who graduated with a first-class honors degree in Economics & Econometrics from the University of Sheffield. He has nearly four decades of banking experience – including over 30 years at HSBC in senior risk roles in London and New York – bringing deep risk-management skills, strong leadership and global insight to his role as Group Chief Risk Officer at Quintet Private Bank.
Bryan Crawford
Bryan Crawford serves as Group Head of Investment & Client Solutions and member of the Authorized Management Committee at Quintet Private Bank. He earlier served as Hong Kong-based APAC Head of Product Sales at UBS Wealth Management. Previously, he served at J.P. Morgan in a range of positions, including EMEA Head of Technology Investment Banking and Head of Private Client Advisory. He began his career in the Investment Banking division at Goldman Sachs. Crawford, a mathematics and computer engineering graduate of Trinity College Dublin, earned his MBA at INSEAD.


Siegried Marissens
Siegfried Marissens serves as Secretary General and member of the Authorized Management Committee at Quintet Private Bank. In that capacity, he leads Regulatory Affairs and Corporate Center, while also overseeing the firm’s Legal and Data Protection Office functions. Over his nearly 30-year career at Quintet Private Bank, Marissens has held a range of roles, commencing as a portfolio manager in Luxembourg, then holding the same position at Brown Shipley, the group’s UK affiliate. Since 2001, he has held roles with significant pan-European dimensions. He earned his degree in commercial engineering at the University of Antwerp, complemented by an MA in macroeconomics from the College of Europe in Bruges.

Board of Directors

Rory Tapner
Rory Tapner was appointed Chairman of the Board of Directors of Quintet Private Bank in May 2020. He brings more than 20 years of board-level experience at financial services firms to this important role, including as Chairman of the Board at Brown Shipley, Quintet’s UK affiliate. Over the course of his career, Tapner has held roles such as Global Head of Equity Capital Markets and Investment Banking at UBS, and Chair and Chief Executive of UBS Group’s Asia Pacific businesses. Following more than a quarter-century of service at UBS, he was appointed Chief Executive of Coutts in 2010.
George Nasra
George Nasra, who serves as Deputy Chairman of the Board of Directors, is CEO of Precision Capital, a bank holding company. He previously served as Managing Director of International Bank of Qatar (2008-12), the capstone of his long banking career in the Middle East, where he served primarily at National Bank of Kuwait (1979-2008).
Alla Bashenko
Alla Bashenko, who joined the Quintet Private Bank Board of Directors in January 2021, spent the majority of her executive career in the Securities division at Goldman Sachs, having started on the Commodities trading floor in New York. She then served in a variety of roles at Nomura International, including as Global Chair of Global Markets Regulatory Response Taskforce. Bashenko currently holds a range of non-executive and advisory roles, both within and outside financial services. A British national who was raised in Ukraine and has worked worldwide, she earned her Bachelor’s and Master’s degrees, with honors, at Brown University in the United States. She has particular interest in ESG issues, technology and digital transformation.
Yves Francis
Yves Francis - who joined Quintet Private Bank’s Board of Directors in March 2020 - previously served as CEO, Managing Partner and member of the Executive Committee at Deloitte Luxembourg. Earlier, he led the firm’s investment management practice for Europe, the Middle East and Africa. Prior to joining Deloitte, he served at JP Morgan Asset Management (Europe). He holds a degree in Business Administration from the University of Liege and an MBA from the University of London.
Tomas Franzén
Tomas Franzén brings four decades of experience in asset management, finance and economics to the Quintet Private Bank Board of Directors, which he joined in September 2021. Prior to founding Franzen Advisory, he served for 15 years at the $40 billion Second Swedish National Pension Fund (AP2), where he was Chief Investment Strategist and member of the Executive Committee. Franzén has held a wide range of Board, Investment Committee and Advisory Board positions at leading organizations, including in his native Sweden, and has lectured on investment topics worldwide.
Anne Ruth Herkes
Anne Ruth Herkes previously served as State Secretary at the German Federal Ministry for Economic Affairs and Energy, where she led Germany’s global trade interests, and EU and WTO trade negotiations. She has nearly 30 years of professional experience in politics, diplomacy, and economic affairs in Europe, the US, Japan and Qatar. She earlier served as Ambassador to Qatar and, before that, was a member of the Executive Management of BP Biofuels in London in her role as Vice President, Policy and Communications. She previously served on the board of KfW IPEX-Bank.
Antoine Marcolin
Antoine Marcolin, who was appointed to the Quintet Private Bank Board of Directors in August 2018, currently serves as Deputy CEO of Precision Capital, a bank holding company he joined as an Associate in 2014. An experienced financial services sector professional, he earlier served for six years at Deloitte Luxembourg in audit and corporate finance functions. A French national, Marcolin earned a degree in law from the University of Lille and an MA from the ESCEM School of Business and Management. He also holds an MBA from London Business School.
Marco Mazzucchelli
Marco Mazzucchelli has been active in the financial industry for over 30 years, covering Senior Executive roles for a number of leading institutions. Over the years, he also served as Independent Director on several Boards, including Borsa Italiana (IT), MTS (IT), EuroMTS (UK), Harrods Bank (UK), Lindorff Group (NOR), Ospedale San Raffaele (IT), Kairos Investment Management (IT). Additionally, he was Member of the European Commission High-Level Expert Group on Bank Structural Reform and of the European Banking Authority Stakeholders Group as well as Visiting Scholar at MIT Sloan.
Frank Ertel

Frank Ertel was appointed to the Quintet Private Bank Board of Directors in January 2021 as an employee representative from Quintet in Luxembourg. Ertel, who joined the bank in 1989, focused on securities for three decades, serving for nearly 25 years as a Senior Trader and Execution Officer in the Global Markets department. Chairman of Quintet’s European Works Council since 2016, he was elected as a permanent delegate at Quintet in Luxembourg in 2019. He earlier served as a Director from 2001-2017.

Bas Gradussen

Bas Gradussen was appointed to the Quintet Private Bank Board of Directors in June 2022 as an employee representative from InsingerGilissen in the Netherlands, subject to regulatory approval. He joined the bank in 2006 as a Senior Account Manager. In 2012 he became a Portfolio Manager and currently serves as a Senior Portfolio Manager SRI. He holds a Bachelor in Economics from the HAN University of Applied Sciences in Arnhem, the Netherlands, and is a Chartered Financial Analyst and Certified ESG Analyst. Gradussen has served as a member of the InsingerGilissen works council since 2016, including as chairman of it from 2018-2022.

Marie-Christine Schlag

Marie-Christine Schlag was appointed to the Quintet Private Bank Board of Directors in January 2021 as an employee representative from Puilaetco in Belgium. She joined the bank in 1997 as part of the Execution-Only team, then served as a Business Analyst. She is currently a Senior Credit Officer. A graduate of the University of Liège and EHSAL Management School, with degrees in Economics and Management, Schlag has served as a member of the Puilaetco works council since 2012.

Jan Tomasek

Jan Tomasek was appointed to the Quintet Private Bank Board of Directors in January 2021 as an employee representative from Merck Finck in Germany. He joined Merck Finck in 2008 and currently serves as a Senior Derivatives Trader. He has also served as a team leader on the Eurex desk, a client advisor and fund manager. The holder of a degree in Business Administration from VWA München with over 20 years of experience meeting client needs, Tomasek has served as a member of the Merck Finck works council since 2014 and was earlier a member of Merck Finck’s Supervisory Committee.

Precision Capital

Precision Capital

Quintet Private Bank was acquired in 2012 by Precision Capital, a limited liability company.

Representing the private interests of Quintet’s ultimate beneficial owner, a member of the Al-Thani family of Qatar, Precision Capital holds 99.9% of Quintet Private Bank.

While the ultimate shareholder of Precision Capital has made a range of other private investments – including in areas such as financial services and real estate – Precision Capital exclusively oversees the investment in Quintet. Precision Capital is a private – rather than sovereign – organization that seeks to capitalize on the attractiveness of the European private banking industry over the long term. A strong and committed shareholder, the firm seeks to grow Quintet Private Bank, both organically and through M&A activity.

Highly supportive of Quintet Private Bank’s vision, Precision Capital is focused on unlocking the full potential of the pan-European private banking group. That includes supporting the establishment of a leading presence in every market in which Quintet Private Bank currently operates.

The core management team of Precision Capital is led by George Nasra, the firm’s CEO, who also serves as Deputy Chairman of the Board of Directors of Quintet Private Bank. A highly respected and internationally prominent banker, Nasra served for three decades at National Bank of Kuwait, then assumed the leadership of International Bank of Qatar immediately prior to his appointment at Precision Capital.

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