Sibelco Group Board of Directors

The Board of Directors is the highest corporate body within the Sibelco Group. The Board consists at present of 14 non-executive directors. The Board is assisted by an Audit Committee and a Remuneration & Nomination Committee.

Bert De Graeve

1955, Belgium
Chairman of the Board

Mr. De Graeve holds Master degrees in Law and Tax Management. After starting his career in audit with Arthur Andersen, Mr. De Graeve moved into industry where he held various key positions in Belgian flagship companies, in Belgium and abroad: CEO with Shanghai Bell, CEO of the Flemish broadcasting company VRT and CEO and Chairman of Bekaert NV. Mr. De Graeve was elected as a Member of the Board at Sibelco in 2015, assuming the chairmanship in 2016. Mr. De Graeve is also Chairman of Telenet NV and independent director of UCB NV and Euroclear Holding. Mr. De Graeve exercises his mandate as a permanent representative of IDw Consult bvba.



France de Sadeleer

1969, Belgium

Mrs. de Sadeleer was elected Member of the Board of Sibelco in 2015. She led a multi-disciplinary team in the field of conflict solving at Université Libre de Bruxelles.  Mrs. de Sadeleer obtained a master degree in Family Sciences and Psychology at Université Catholique de Louvain (1994) and a master degree in Classical Singing at the Royal Conservatory in Mons (2011). Furthermore, she complemented these degrees with several programs in the field of business, family business (Guberna), tax, leadership training and conflict solving (Demoucelle). She is also a Member of the investment committee of Phitrust Partenaires and Phitrust Europe, two Impact investment funds. She is a member of the Family council Board of Aliaxis and Etex.



Michel Delloye

1956, Belgium
Chairman of the Audit Committee

Mr. Delloye joined the Sibelco Board in 2016. He holds a Law degree from the University of Louvain and started his career in the audit and tax department of Deloitte Haskins & Sells. He joined Groupe Bruxelles Lambert in 1984 of which he became CFO in 1986, President of the Lambert Brussels Capital Corporation (1988 New York) and General Manager at Groupe Bruxelles Lambert (1990), Managing Director of RTL Group, a leading TV and Radio Group in Europe (1992) and President and CEO of the Central European Media Enterprise (1998, London). Since 2000, he is primarily active as a private equity investor/entrepreneur, holding several independent director positions in leading family-controlled companies. Mr. Delloye also serves in a small number of non-profit initiatives. Mr. Delloye exercises his mandate as a permanent representative of Cytifinance SA.

Jean-Louis de Cartier de Marchienne

1962, Belgium

Jean-Louis de Cartier de Marchienne ventured into various projects as an independent business owner between 1984 and 1991. He was the founder of several Belgium-based agricultural enterprises, with subsidiaries in the Netherlands and Hungary. In 1992, he joined the Board of Directors of printing and publishing company Brepols, based in Turnhout, Belgium. A few years later, in 1995, he was appointed chairman of the Board of Directors of Brepols Group and all its subsidiaries. 1993 marked the arrival of Jean-Louis at Etex, when he joined the building materials group’s Board of Directors. In the years that followed, Jean-Louis joined the Board of several Etex companies. In 1998, he became Managing Director of Cartamundi, a Turnhout-based world-leader in the production of playing cards. Today, Jean-Louis is chairman of Brepols Group and its subsidiaries, Cartamundi, and Etex. He is a director for Promat International and FBNet, the Belgian branch of the international Family Business Network (FBN).

Mr. de Cartier joined the Sibelco Board in 2020 and exercises his current mandate as a permanent representative of ASSaPP NV.

Pascal Emsens

1982, Belgium
Member of the Audit Committee

Mr. Pascal Emsens was elected as a Member of the Board of Sibelco in 2017. Mr. Emsens is a Managing Director within the Renewable and Sustainable Energy Fund at the Carlyle Group. Prior to joining Carlyle, Mr. Emsens was Chief Executive Officer of REDECO (Renewable Development Company), which is the renewable investment arm of AtlasInvest, and also Portfolio Manager of AtlasInvest. Mr. Emsens led all the renewable investments and portfolio management at AtlasInvest. He joined AtlasInvest in 2013 and is a conventional and renewable energy sector specialist with more than 12 years of experience in the industry. Prior joining AtlasInvest, Mr. Emsens was responsible for the West African Market at EXMAR, as a Senior Commercial Manager Offshore. He is a Board Member at Emergya Wind Technologies, Bluemerang Capital, ETEX Group and former member of the Boards of Lexo Energy and New Southern Energy. Mr. Emsens has a BA from Lancaster University, England and exercises his current mandate as a permanent representative of Argali Capital BV.

Walter Emsens

1958, Belgium
Member of the Nomination & Remuneration Committee

Mr. Walter Emsens specializes in the security and surveillance sector. He holds director positions in VAG Security Systems as well as in several other Belgian companies, a.o. as a member of the Board of Etex Group and Eternit. Mr. Walter Emsens was elected member of the Sibelco Board in 2005 and is appointed member of the Remuneration and Nomination Committee. He holds a degree in Commercial and Financial Sciences from the Institut Catholique des Hautes Etudes Commerciales in Brussels.




Hans-Josef Grehl

1960, Germany

Mr. Grehl holds a degree in mechanical engineering from the University of Applied Science in Cologne, Germany. He spent more than 30 years with the Bayer Group, where he has held various specialist and leadership positions in consultancy, procurement and logistics. He worked and lived in Germany, Italy, Thailand and Singapore. During his time in Asia he was involved in the planning  and construction of the Asian plants with a focus on China, where an integrated site was built in Caojing. Currently he is heading the procurement function of Covestro, the former polymers division of Bayer, in Germany. Mr. Grehl was elected a Sibelco Board Member in 2011.




Christoph Grosspeter

1965, Germany

Mr. Grosspeter is currently Managing Director of Grosspeter BeteiligungsGmbH (since 2006) and of MTS Meditel Service GmbH (since 2010). He holds a master degree in computer science of the European Business School and followed an MBA program at INSEAD, Fontainebleau. Mr. Grosspeter has held various positions in industrial minerals companies. He was assistant to the Financial Director with Luzenac Group in Paris (1994) and financial analyst with Unimin Corporation (1995). After two years as an Associate with Mercer Management Consulting (1997-1998) he joined Amberger Kaolinwerke in Hischau, Germany as Head of Business Development in 1999. One year later, in 2000, he became Sales Director within the same company as well as Managing Director of SLS Baustoffe GmbH. Mr Grosspeter was elected to the Sibelco Board in 2011.

Jean-Pierre Labroue

1962, France
Chairman of the Nomination and Remuneration Committee

Mr. Labroue holds post graduate law degrees from the University of Paris X Nanterre, completed the ESSEC-IMD business school program and obtained a LL.M. degree from Widener University, Delaware Law School. He began his career in 1988 with Jeantet & Associés law firm in Paris. In 1989, he joined Rhône-Poulenc Chimie’s legal department where he became involved in M&A. In 1993, he moved to the American Rhône-Poulenc Rorer’s headquarters in Collegeville, PA. Back in France in 1996 he took the position of Vice President & General Counsel, Europe and International of Rhône-Poulenc Rorer. In 1999, he was appointed Vice President, General Counsel and Corporate Secretary of Aventis Pharma SA. In 2004, he joined Rhodia to take the position of Group General Counsel & Corporate Secretary, first supervising the Legal function and later also Mergers & Acquisitions and Public Affairs. He was Group General Counsel of Solvay and Head of Legal and Compliance in between 2012 and 2016. Mr. Jean-Pierre Labroue was appointed to the Board of SCR-Sibelco in December 2017. He exercises his current mandate as a permanent representative of Calavon Finance SAS.

Jean-Marc Ueberecken

1972, Luxembourg

Mr.  Ueberecken is the managing partner of Arendt & Medernach. He is a corporate law and mergers & acquisitions partner by trade, with wide experience in the provision of advice to multinational corporations, major commercial companies and ambitious domestic entrepreneurs in connection with mergers and acquisitions, complex multi-jurisdictional corporate restructurings, change of control transactions including tender and exchange offers, joint ventures, as well as voluntary or forced liquidations. Mr. Ueberecken has been a lecturer at the Law Faculty of the University of Luxembourg in several legal disciplines from 2000 to 2013. He has been a member of the Luxembourg Bar since 1998 and was a member of the Brussels Bar from 2000 to 2008. Jean-Marc Ueberecken holds a Master’s degree in law (Licence en droit) from the Université Catholique de Louvain (Belgium), as well as a Master of Laws degree (LL.M.) in banking and finance law from King’s College London (U.K.).

Evrard van Zuylen van Nyevelt

1970, Belgium
Member of the Audit Committee

Mr. van Zuylen started his career as a production and project engineer before joining the Boston Consulting Group as a management consultant. Since 2000 he founded and sold two SaaS companies, one in online supply chain solutions and one in intellectual property litigation  data services. He was elected member of the SCR-Sibelco board in 2008. Mr. van Zuylen holds an MBA degree from the University of Chicago Booth School of Business, an MSc Civil Engineering in Mechanics and an MSc Business Administration of the Catholic University of Louvain-la-Neuve. He exercises his current mandate as a permanent representative of Zuyfin SRL.



Michel Verhaeghe de Naeyer

1966, Belgium
Member of the Nomination and Remuneration Committee

Mr. Verhaeghe is currently Executive Director of Soverin SA and Strudelimmo SA. He holds a BA in Applied Economics from Louvain University and took part in the Young Managers programme of INSEAD. During  1990s, he held a number of finance and business positions within Sibelco companies in USA, Netherlands and UK in order to become acquainted with the minerals business. In 2011, he was elected a Board member of SCR-Sibelco and joined the Audit Committee. He also serves in the Boards of a number of foundations. M. Verhaeghe is also a member of the Family council Board of Etex and Aliaxis and exercises his current mandate as a permanent representative of Soverin SA.


Stefan Borgas

1964, Germany

Mr. Borgas grew-up in Germany and France and followed his business studies in Saarbrücken (D) and St. Gallen (CH). He spent 14 years with BASF in the plastic materials and life science businesses. He lived and worked in various professional and leadership roles in USA, Germany, Ireland and China. In 2004 he became CEO of Swiss-based Lonza Group which was transformed into a focused life science company during his tenure. From 2012-2016 he was CEO of Israel Chemicals based in Tel-Aviv, Israel’s largest industrial group. Since 2016 he is CEO of RHI Magnesita based in Vienna building the global leader in refractories. His experience includes non-executive board mandates at Syngenta, work in management and professional associations and with start-up companies. He joined the Sibelco Board in 2019.

Svein Richard Brandtzæg

1957, Norway
Member of the Nomination and Remuneration Committee

Mr. Brandtzæg was CEO of the global aluminium company Norsk Hydro ASA, between 2009 and 2019. A scientist with a Ph.D in inorganic chemistry from the Norwegian University of Science and Technology (NTNU), Dr. Brandtzæg’s long career in Hydro revolved around R&D, technology development, innovation and operational improvements, with numerous leadership positions throughout the company and across the globe. Dr. Brandtzæg utilizes his extensive knowledge and experience in several board positions, including as chairperson of the board of NTNU and construction and civil engineering group Veidekke. Dr. Brandtzæg was elected as a Sibelco Board Member in 2019.