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Managing Board

Meet our Managing Board: Sikko van Katwijk (Chairman), Jaap Witteveen (COO) and Mark Stoffels (CFRO).

Sikko van Katwijk

Sikko van Katwijk

Chairman of the Managing Board

In 2009 Sikko van Katwijk (1963) was appointed as member of the Managing Board in 2009. In 2014 he was appointed as Chairman of the Board for a period of 4 years. Sikko primarily focuses on Corporate, Commercial Department, Treasury, Internal Audit and the UK & German Branches. His in depth understanding of the UK comes from his period as Managing Director of our London office in the late 1990s. During his time at KAS BANK and Citco Bank, Sikko has built up strong experience in Relationship Management, Sales and Marketing for both institutional investors and transaction banking clients.

At KAS BANK we value trust and long term planning, combined with maintaining a low risk profile. In the many meetings I have with our clients in the Netherlands, Germany and the UK, I pick-up recognition and renewed momentum for our banking and custodian principles. We always focus on our client's interests in an independent and neutral way.”

Sikko studied Public Administration at the Erasmus University in Rotterdam and Business Administration at Indiana University in Bloomington, USA. Continuing his academic interests, Sikko is a member of the International Advisory Board of the University of Maastricht in the Netherlands.

Jaap Witteveen

Jaap Witteveen

Member Managing Board and Chief Operating Officer (COO)

Jaap Witteveen (1967) was appointed member of our Managing Board on the 1st of September, 2014 for a period of four years. As Chief Operating Officer (COO) Jaap is primiraly responsible for Operations, IT and HR & Business Services.

"KAS BANK and its markets are changing rapidly, technological developments in operational processes go on continuously and regulations are becoming increasingly complex. This underlines the importance of a strong IT function, efficient operations and a good balance between them."

Jaap Witteveen has been working in the banking sector for 16 years. From 1997, he worked in various positions at ABN AMRO where the focus has been on Operations and IT and operational and technical control. His last position before his appointment at KAS BANK was member of the board of Theodoor Gilissen Bankiers responsible for Operations and IT, Finance and Risk.

Jaap Witteveen received his Master of Science in Business Administration at Nyenrode University and is also MA (Financial) Management. He then studied accountancy and took various internal and external training courses in the field of (project) management.

Mark Stoffels

Mark Stoffels

Member Managing Board - Chief Financial & Risk Officer (CFRO)

Mark Stoffels (1972) is employed with us since the 1st of January, 1999. He was appointed member of the Managing Board and CFRO on the 1st of February, 2016, for a period of four years. As CFRO, Mark Stoffels is responsible for Finance, Risk, Compliance and KAS Trust.

"The developments in the financial sector follow each other in rapid succession. The only constant seems to be change. Our customers and we ourselves are constantly confronted with new laws and regulations and changing needs of market participants. This requires an organization that can adapt to it in the full width based on a vision and focus that actively anticipates these developments."

Mark finished his postgraduate studies Accountancy at the Vrije Universiteit in Amsterdam and he is registered at the Royal Dutch Institute of Chartered Accountants (NBA) as a Chartered Accountant. Mark started his career as an internal auditor with our Internal Audit Department. From 2001 he held various (senior) management positions for the Internal Audit department, operational departments and finally Finance & Control. In his last position, he served as Managing Director Finance & Control responsible for financial control, business control and reporting. In addition, he advised on strategic and tactical levels on matters that affect the financial position of the bank.

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Remko Dieker

Get in touch

Remko Dieker

Secretary to the Managing Board / Investor Relations
+31 (0)20 557 51 80