Executive Committee

Philippe Berterottière picturePHILIPPE BERTEROTTIERE
Chairman of the board & CEO 

Philippe Berterottière joined GTT in 2009. He has more than 35 years of experience in advanced technology sectors. Previously, he served in various senior positions with aerospace companies. At Airbus, he was a contract negotiator, before being appointed head of business development. He was sales director at Matra’s defence division and held various sales and marketing responsibilities at Arianespace, before becoming Sales and Marketing Director and an Executive Committee member. He is a graduate of the prestigious HEC business school (Hautes Etudes Commerciales) and of the IEP (Institut d’Etudes Politiques).

Deputy CEO

Eric Dehouck joined GTT on April 2020. He began his career with the Suez Group holding operational and then executive positions in several Group entities in the water treatment technologies, and more specifically membrane area. In 2016, he was promoted Vice President and Head of Research and Innovation of Suez Group. In 2018, Eric Dehouck founded his investment company, which invests in innovative companies. In September 2019, he joined the French General Secretariat for Investment (SGPI) assisting the French Prime Minister as Director of the “Industry and Services” program. Eric Dehouck is a graduate from the Ecole Nationale Supérieure des Arts et Métiers and from HEC-Entrepreneurs. He is also a national IHEDN auditor (French Institute for Higher National Defence).

Karim Chapot picture

Technical Vice President

Karim Chapot joined GTT as an engineer in 1999 and has worked in the maritime transportation industry for 22 years. In 2002, he became head of structural calculations and was then promoted to Development Director in 2007. Previously, he held various positions at the Cherbourg and Le Havre shipyards. He graduated in naval and offshore architecture from ENSTA Bretagne (École Nationale Supérieure de Techniques Avancées Bretagne) and completed the Executive MBA program at HEC (Hautes Études Commerciales).

David Colson pictureDAVID COLSON
Commercial Vice President

David Colson joined GTT in 2004 and has nearly 30 years of experience, gained primarily in the automotive industry and then with GTT. During his career with GTT, he was a shipyard project manager until 2008 and head of the business development department until 2010, when he was appointed Commercial Director. Previously, he held several positions at APV, ACOME and Valeo Filtration Systems. He graduated in mechanical engineering and business administration from the University of Birmingham (Bachelor of Engineering and Bachelor of Commerce).
Picture Lélia Ghilini GTTLÉLIA GHILINI
Secretary General

Lelia Ghilini joined GTT in 2014 as General Counsel, after a two-year experience at the Ministry of Economy and Finance as special advisor (European Affairs). Admitted to  the bars of Paris and New York, she had previously worked for nearly 10 years as a lawyer in mergers and acquisitions at several prestigious international law firms. Lelia holds a DESS in business law and a business law master’s degree (DJCE diploma) from the University Paris II (Panthéon – Assas). She also holds an LL.M from the New York University School of Law. In 2019, Lélia Ghilini is appointed Secretary General.

Marc Haestier pictureMARC HAESTIER
Chief Financial Officer

Marc Haestier joined GTT in 2017. He holds a Degree in Applied Economics and a MBA from the University of Louvain and began his career holding various financial positions within Arjo Wiggins between 1985 and 1997, in Belgium and subsequently in the United Kingdom, before joining Alstom in Paris in 1997 as Director of Treasury and Financing. He then moved to Gaz de France in 2004 as Deputy CFO. Since 2010, Marc was CFO of the Infrastructures Business Line of Engie.

Human Resources Vice President

Sandrine Vibert joined GTT in 2019 as Human Ressources Vice President, with over 23 years experience in the Oil and Gas and Transport Engineering sectors. She began her career in various HR positions within the Group Bouygues: Saur as HR Manager, Bouygues Offshore as Onshore Pipeline HR Manager for Europe and Central Asia and then joined Saipem, where she stayed in Italy, as Recruitment, HR Development and Training Director. Certified Coach and Co-development, Sandrine Vibert creates her change management consulting firm and then joined Systra as the HR Director for technical and project management functions at the Group level. She holds a Master in Business Strategy and Human Ressources Management and a Degree in Economic and Social Sciences, University François Rabelais of Tours.


Consult the Board of Directors and Specialized Committees section.anagement and a Degree in Economic and Social Sciences, University François Rabelais of Tours.