Marnix Galle*

Chief Executive Officer and Executive Chair
Chair of the Nomination Committee
Chair of the Executive Committee
Chair of the Investment Committee
Chair of the Acquisition Committee

* Mandate executed by the company A³ Management BV, represented by Marnix Galle.

After studying economics at Tulane University in New Orleans, Louisiana, USA, Marnix began his professional career in 1987 at Cegos Belgium as a consultant. In 1989, he took his first steps in the real estate sector (family portfolio). His own company Allfin (°2001) became one of the leading real estate developers in Belgium. In 2014, Allfin Group took a 29% stake in Immobel, listed on Euronext since 1863. Following the merger between Allfin Group and Immobel in 2016, he became its Executive Chair and has been chairing Urban Land Institute (ULI) Europe since July 1st, 2020. He also is a director, member and trustee of several leading European and American associations.


Adel Yahia*

Senior Managing Director Belgium and Luxembourg
Member of the Executive Committee
Member of the Acquisition Committee

* Mandate executed by the company Adel Yahia Consult BV, represented by Adel Yahia.

Adel joined Immobel in December 2017 as Chief Operating Officer responsible for the Development, Technical, Sales and Landbanking departments. Today responsible for Immobel Belgium, he will also become responsible for Luxembourg and this with effect from 1 January 2023. He will take over the responsibilities of Olivier Bastin, who has decided to leave the company in the first half of 2023. Until his departure, Olivier Bastin will remain a member of the Executive Committee. Prior to that, he worked at AG Real Estate as head of the Residential department and co-Head of Development. Between 2010 and 2015, he was responsible for various business units at Matexi. He started his career in 2004 as a real estate developer and also worked in real estate investment banking. After studying law at the KU Leuven and holding a Master’s degree in General Management (PUB) from Vlerick Business School, he graduated in 2006 with a Master’s degree in Real Estate (postgraduate programme in Property Studies) at the KU Leuven. In 2014, he completed the “Executive Program in Real Estate” training at Solvay Business School (ULB). He has been a lecturer at KU Leuven since 2010 and at Solvay Business School since 2015.


Karel Breda*

Chief Financial Officer
Member of the Executive Committee
Member of the Acquisition Committee

* Mandate executed by the company KB Financial Services BV, represented by Karel Breda.

After studying Applied Economics at the KU Leuven and obtaining an MBA from the University of Chicago, Booth School of Business, Karel began his professional career in 1999 by developing a number of internet start-ups in Europe. In 2002, he joined GDF Suez (now Engie), where he held various managerial positions in M&A and Project Finance in Europe, South Asia, the Middle East and Africa. In 2011, he was promoted to Chief Financial Officer for the South Asia, Middle East and Africa region based in Dubai and in 2014 for Engie E&P in the Netherlands. Prior to joining Immobel on 1 August 2018, Karel was Managing Director Middle East, South and Central Asia and Turkey for Engie Solar based in Dubai and India.


Stephanie De Wilde*

Chief Legal Officer
Member of the Executive Committee
Member of the Acquisition Committee

*as permanent representative of L.A.W. BV.

Stephanie holds a Master in Law from Ghent University, a Master after Master in Company Law (UGent) and a Master in Real Estate ( KU Leuven). She started her professional career as an attorney for Corporate and M&A and gained experience at several law firms, including Monard Law, EY LAW and law firm De Langhe and in-house experience as Corporate Legal Counsel at Lotus Bakeries. In 2016, Stephanie joined Immobel Group as Senior Legal Counsel. In 2022, she took up the torch as Head of Legal. Since mid-2022, she has been Chief Legal Officer and Compliance Officer.

Olivier T.

Olivier Thiel*

Senior Managing Director of France, Germany, Poland and Spain and Head of Development Belgium
Member of the Executive Committee
Member of the Investment Committee
Member of the Acquisition Committee

*as permanent representative of SRL Queen-K.

After studying Construction and Real Estate Management at the Hogeschool Antwerpen, Olivier started his career in real estate brokerage in 2006 before joining the capital markets team of Knight Frank Brussels in 2010. In 2013 he joined Alides REIM as development director, managing their major mixed-use urban projects. He joined the Immobel Group in 2016 as Development director of Immobel Belgium until 2020 and is currently Managing director of Immobel Poland (2019) and Head of Development Belgium (2020). Today he also becomes in charge of Germany, France and Spain. In his capacity as "MD France, Germany, Poland and Spain and Head of Development Belgium", he has been appointed as a member of the Executive Committee, effective 1 January 2023. He replaces Fabien Acerbis, who left the company on 2 December 2022.

Olivier Bastin

Olivier Bastin

Member of the Executive Committee

Olivier began his career in the banking sector (BACOB, 1994-1995) before joining the real estate department at Intermarché, where he contributed to the expansion of the brand in Wallonia (1995-1996). In 1997, he joined Jones Lang LaSalle, where he became the department head of the Office Department for Belgium (1997-2005) before becoming Managing Director of the group’s Luxembourg branch (2005-2011). In 2010, he combined this position with that of Head of Capital Markets for the Belux. He left JLL at the end of 2011 to join Allfin Group as CEO of the Luxembourg entity. From 2018 to 2022, he was also in charge of the expansion of Immobel on the German market. Olivier has a degree in Applied Economics (ULG, 1988-1992) and an MBA (ULG & Maastricht University, 1993-1994).

Supporting activities

Katrien Huygens

Katrien Huygens*

Head of Marketing & Corporate Communication

*Mandate executed by the compagny Amcam

Bart Leeman*

Company Secretary Immobel Group

* as permanent representative of Management 52 bv.


Sven Lenaerts*

Head of Corporate Social Responsibility Immobel Group

* Mandate executed by the company Sven Lenaerts SRL, represented by Sven Lenaerts.