At Sif Group we acknowledge the importance of ensuring integrity and maintaining and enhancing an open and transparent communication with all stakeholders and other parties interested in our company. Here you can find our Corporate Governance related materials as well as information about our Management Structure.

Management structure

Sif Group has a two-tier board structure consisting of an Executive Board and a Supervisory Board. The Executive Board is responsible for the day-to-day management which includes, among other things, executing strategy implementing policies and setting and achieving Sif’s objectives. The Supervisory Board supervises the management of the Executive Board and the general course of affairs of the Company and the business connected with it. The Supervisory Board also provides advice to the Executive Board.

Executive Board

The Executive Board is charged with the management of Sif Group, subject to the restrictions contained in the Articles of Association. In performing its duties, members of the Executive Board shall be guided by the interests of Sif Group and of the business connected with it. The Executive Board shall provide the Supervisory Board with the information necessary for the performance of its tasks in a timely fashion and submit certain important decisions to the Supervisory Board for its approval.

The Executive Board consists of Fred van Beers, Chief Executive Officer and Leon Verweij Chief Financial Officer.

Fred van Beers

FredvanBeers RGB web

Fred van Beers (1962) holds a degree in marine engineering and worked as a business unit manager at Alcoa and LIPS before joining Wärtsilä. He served at Wärtsilä as Managing Director Netherlands from 2007 to 2010 and as Vice President Services Area North Europe from 2010 to 2015. More recent Fred van Beers was the CEO of Blohm & Voss shipyards in Hamburg (2015-2017) and served in various other management positions on an interim basis (2017- 2018).

Leon Verweij

LeonVerweij RGB web

In January 2017, Leon Verweij was appointed CFO. After completing his degree in business economics, Verweij has held several financial positions including 23 years as financial director at companies such as Grasso’s Koninklijke Machinefabrieken, Koninklijke IBC, Koninklijke VolkerWessels Stevin, and Schoeller Arca Systems Services. During his time at the Smulders Group he gained experience in the field of steel foundations for offshore wind farms. He more recently served as interim CFO at Ballast Nedam and as interim CEO at the Oskomera Group.

He also worked for listed companies including serving as CFO at Koninklijke Volker Wessels Stevin and as interim CFO at Ballast Nedam. In addition to his position as CFO, Verweij holds other positions including a seat on the Supervisory Board of the Villa Pardoes foundation.

Management team

The Management Team consists of Executive Board members and Michel Kurstjens, Chief Commercial Officer and Frank Kevenaar, Chief Operating Officer.

Sif Group’s Management Team has a broad industry expertise in the oil & gas and offshore wind markets and its production expertise which allows them to effectively and efficiently address the needs of customers, identify opportunities and threats in the market, develop new market positions and produce high quality, cost competitive products in time.

Joost Heemskerk


Joost Heemskerk joined Sif Group as CCO in June 2020. He holds a MSc degree in civil / offshore engineering from Delft University of Technology. Over the last 15 years he has held various engineering, project management, commercial, strategy consulting and general management positions in the global offshore oil & gas, offshore wind and marine renewables markets. Joost is driven to help the growth of offshore wind as a key contributor to the energy transition.

Frank Kevenaar

FrankK2 RGB web

Frank Kevenaar is COO at Sif Group since April 2019. After his Bachelor of Engineering en Bachelor of Business Administration Frank has gained a lot of experience in the international automotive and maritime industry. He has held various management positions at Wärtsilä, Brabant Components and Stork and has extensive knowledge and expertise in the field of production and engineering.

He is a strong, customer focused business development professional with a proven record of accomplishment in Operational Excellence and change management in international (OEM) industries.

Supervisory Board 

Sif Group has a highly experienced Supervisory Board consisting of five seasoned industry leaders. The Supervisory Board is charged with the supervision of the policy of the Executive Board and the general course of affairs of Sif Group and of the business connected with it. The Supervisory Board shall provide the Executive Board with advice. In performing their duties, Supervisory Directors shall be guided by the interests of Sif Group and of the business connected with it.

André Goedée

Chairman of the Supervisory Board

Mr. André Goedée (1951) has been a member of the supervisory board since December 2015. Between 2003 and 2013, Andre Goedee was the CEO of Dockwise. Following the acquisition of Dockwise by Boskalis, Andre Goedee acted as member of the executive board of Boskalis and advisor to the board. Before joining Dockwise, Andre Goedee worked as CEO European staffing at Vedior Professional Services (1999 -2003), as EVP at Heerema Offshore Services (1989 – 1999) and Neddrill Drilling Contractors (1977 - 1989). Andre Goedee obtained a final degree Master Mariner (maritime technical engineering) in 1978 at the Mercantile Marine College in Scheveningen/Rotterdam and has participated in various management and marketing programs at various academic institutes.

Caroline van den Bosch

Mrs. Caroline van den Bosch (1965) is managing partner and shareholder of Emeritor since June 1998, a leading procurement services provider in the Netherlands. Emeritor also includes software development (INCONTO & Global Brainforce) businesses. Besides her work for Emeritor, Caroline van den Bosch owns 50% of the shares of Meal Company, that manufactures unmanned catering machines. In addition, Caroline van den Bosch has been a moderator for Alex van Groningen since June 2011 and has been a member of the supervisory committee of the Amstelveen Sportbedrijf until July 2013. Caroline van den Bosch holds a marketing degree from the school for business administration and economics (HEAO) in Utrecht and a NIMA-C Marketing degree (MBA level).

Peter Gerretse

Mr. Peter Gerretse (1956) has been a member of the supervisory board of Aeronamic Holding since 2010. Between 1995 and 2013, Peter Gerretse worked at Vanderlande Industries, a leading supplier of Material Handling systems, where he has last served as president and CEO. Before Peter Gerretse joined Vanderlande Industries, he worked at Fokker Aircraft, where he has also held several management positions. Peter Gerretse holds an engineering degree in Aerospace Engineering from Technical University Delft.

Peter Visser

Mr Peter Visser (1956) co- founded investment fund Egeria in 1997. From 1990 until 1997 he was managing director at MeesPierson N.V. and responsible for their private equity activities in Europe. From 1983 until 1990 he worked for McKinsey & Company and founded his own consulting firm Management & Investment B.V. Peter Visser is the ultimate beneficial owner of 49.38% of the shares in Sif Holding N.V.

Peter Wit

Mr. Peter Wit (1967) presently holds the position of Chief Operations Officer at Atlas Professionals B.V. From 2014 until 2017, Peter Wit has held the position of CFO at Inashco B.V.From 2009 until 2013 he was CFO at Dockwise Ltd until the acquisition of all shares by Boskalis. Before joining Dockwise Peter Wit held several positions at Royal Dutch Shell Group ranging from management of the Solar business to finance manager in Albania, M&A adviser and finally COO/CFO for the group’s pension asset management. Peter Wit holds a master degree in business administration from the University of Groningen and a postdoc degree in controlling from the VU University in Amsterdam.

Related documents, Principles & Policies