Patrick Jeantet, President of the Board of Directors
Mr. Patrick Jeantet is a graduate of École Polytechnique and École Nationale des Ponts et Chaussées in France. Mr. Patrick Jeantet began his career in 1985 in the civil engineering and construction sector within the Bouygues and Vinci groups. In 1997, he joined International Water, a subsidiary of Bechtel, first in Manila and then in London, as chief operating officer. In 2005, Mr. Patrick Jeantet joined Keolis, first as deputy chief executive officer international, and then as executive director France. In 2013, he became deputy chief executive officer of the Aéroports de Paris group. He has been deputy chairman of the management board of SNCF and chairman and chief executive officer of SNCF Réseau from 2016 to 2020. Mr. Patrick Jeantet joined the Board of SPIE in 2021 as Director and chairman of the Nomination and Compensation Committee and was appointed as Senior Independent Director in 2022.
Markus Holzke, CEO of SPIE
Army officer and graduated (MBA) from the University of the German Federal Armed Forces in Munich. Markus Holzke joined TÜV Süd AG in 2006 where he held different positions including VP finance for the Asia-Pacific region. In 2010, he joined Hochtief Solutions AG and became the chief financial officer of the service segment in 2012. He joined SPIE in 2013 following the acquisition of Hochtief Solutions’ service business. Markus Holzke was appointed CEO/ Managing Director of SPIE Deutschland & Zentraleuropa in 2014, renamed to SPIE Germany Switzerland Austria in 2024.
Since April 30, 2026 he serves as CEO of the SPIE Group.
Sandrine Téran, Independent Director
Sandrine Téran has a degree in business tax and finance from the Paris Dauphine University. After starting her career at Ipsen as a risk manager in charge of tax and insurance, she took charge of the Tax department at Euro Disney. In 2000, Sandrine Téran joined Eutelsat as Head of taxation, corporate finance and internal auditing. In this role, she was most notably involved in the privatisation of the company in 2001 and its IPO in 2005.
Sandrine Téran joined the Louis Dreyfus group in 2008. For 8 years, she occupied several key posts there, including Global Head of Tax, Group Corporate Secretary, Global Chief Financial Officer and lastly Managing Director of Louis Dreyfus Holding.
Since 2017, Sandrine Téran has served as Chief Financial Officer within the Eutelsat group (while having held the position of Chief IT Officer until 2020).
Bertrand Finet, Independent Director
After having graduated from the ESSEC, Bertrand Finet began his career in 1991at the 3i Group. He joined CVC Capital Partners in Paris in 1996, before being entrusted with the executive management of the Paris office of de Candover in 2006. He become manager and member of the executive committee of the Fonds Stratégique d’Investissement (FSI) in 2009, SMES equity capital executive manager with Bpifrance in 2013, and then executive manager of the Mid & Large Cap department of Bpifrance in 2015. In January 2017, he is appointed as deputy CEO of FFP.
Gabrielle van Klaveren-Hessel, Director representing employee shareholders
Gabrielle van Klaveren-Hessel, holds a degree in English linguistics and literature from the University of Utrecht in the Netherlands. From 1999 to 2001, she worked in the financial department of the Dutch group Electron Holding BV. In 2001, after the Group purchased Electron, she became payroll management administrator at SPIE Netherlands then payroll manager in 2009. Since May 2012 she has been the representative of the FCPE SPIE Actionnariat on the Board of Directors. Her mandate as a director representing employee shareholders has been renewed in 2019.
Michael Kessler, Director representing employees
After spending the first part of his career with FUJITSU and the Hochtief Group, Mr Michael Kessler joined SPIE in 2013 in the role of Chief Facility Manager within the Group’s German subsidiary. A member of the local works council, he has also been Vice-Chair of the Supervisory Board at SPIE GmbH since 2018. Appointed Director representing employees on the SPIE Board of Directors in November 2020, his term will last for the next four years.
Jérôme Nier, Director representing employees
Jérôme Nier, is graduated from the École Supérieure des Technologies de l’Électronique et de l’Informatique (ESTEI).
After nearly 10 years of experience with a multi-technical design office (GECC-AICC), he joined the SPIE group in October 2005 as Business Manager for the SPIE Sud-Est subsidiary.
Responsible of the Smart Buildings department of SPIE ICS (Digital Services) in 2011, Jérôme Nier became in 2015 IoT business development manager, Design Thinking consultant and innovation advisor for the same subsidiary.
Since 2019, Jérôme Nier is Offer Marketing Manager within the Group marketing department.
Christopher Delbrück, Independant Director
Christopher Delbrück started his career at the Boston Consulting Group.
Having joined E.ON SE in 2002, he became CFO (2007) of the Swedish market unit , spending in total 5.5 years in Sweden, and CFO (2010) and CEO (2013) of E.ONs trading division .
From 2016 to 2019 he served as CFO of Uniper SE, after the spin off from E.ON.
From 2019 to 2020 he was CFO of Lilium GmbH, a start up in regional air mobility, listed at NASDAQ.
He currently serves as board member and non-executive director for VSB Energy GmbH, the atNorth Group, Sweden, Bonroy Petchem, Ltd. and Maschinenfabrik Reinhausen GmbH.
Mr. Delbrück has earned a Masters Degree from Harvards Kennedy School of Government and, besides German as mother tongue, is fluent in both English and Swedish.
Carole Le Gall, Independent Director
After starting her career in local economic development for the French government and then for a local authority, Mrs. Carole Le Gall joined ADEME (the French Environment and Energy Management Agency) to develop the energy efficiency and renewable energy markets. She then managed and developed the CSTB (Scientific and Technical Centre for Building) for 6 years before joining Engie in 2015, in charge of marketing energy efficiency solutions in buildings, then Managing Director of the France Réseaux Business Unit and Deputy Managing Director of Engie Solutions.
In July 2021, she joined TotalEnergies as Sustainability & Climate Senior Vice President in charge of programs supporting the company’s energy transition ambitions.
Carole Le Gall is an independent director of GECINA and a member of the Corporate Social Responsibility Committee and the Compliance and Ethics Committee.
Mariel von Schumann, Independent Director
German and Belgian national, Mariel von Schumann has a a Bachelor in Economics and Management from ICHEC in Brussels and a Master in Economics and International Management from ESCP Paris, Oxford and Berlin.
Mariel has over 25 years experience in leading management roles. She started her career in product management in the IT sector with Digital Equipment Corporation in Geneva and Boston. From 1999 until 2020 Mariel held different executive functions within the industrial Group Siemens in Munich. As the Chief Transformation Officer she was - from 2013 onwards - instrumental in the design and execution of the strategic transformation of the Siemens Group and responsible for a diverse portfolio of corporate functions and initiatives (including investor relations, government affairs and
corporate structure).
For the last 10 years Mariel also sat on a number of boards of directors of listed and non-listed companies in Germany, India, Spain and Singapore. She is currently a member of the Supervisory Board of Agora Strategy Group in Munich and of Seatrium in Singapore, as well as the Chair of the Supervisory Board of Verti Versicherung AG in Berlin.
