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

In the past Stéphane Boujnah occupied the position of Chief Investment Officer at VPSA SAS, Director-European M&A at Credit Suisse First Boston Corp., Managing Director at Deutsche Bank AG (France) and Director-European M&A at Credit Suisse First Boston Europe Ltd.

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 University Paris-Sorbonne (Paris IV).