Founder of KM5 Capital SARL, Stéphane Boujnah presently is Chairman for En Temps réel, Chairman of Insula Orchestra and Chairman-Managing Board & Group CEO at Euronext NV, Non-Executive Chairman for Irish Stock Exchange Ltd. (a subsidiary of Euronext NV). Mr. Boujnah is also on the board of Accentus LLC, Paris Europlace, Borsa Italiana SpA and Euronext Dublin.

In his past career Mr. Boujnah held the position of Member of Commission pour la Libération de la Croissance, Chief Investment Officer of VPSA SAS, Director-European M&A at Credit Suisse First Boston Europe Ltd., Director-European M&A at Credit Suisse First Boston Corp. and Managing Director at Deutsche Bank AG (France).

He received an undergraduate degree from Sciences Po, a graduate degree from the University of Kent, an MBA from INSEAD and an undergraduate degree from Université de Paris IV Paris-Sorbonne.