Member of the Management Board
President of Prisma Media

Expertise and experience

Claire Léost is a graduate of the Institut d’Études Politiques de Paris (Sciences-Po-1997) and of HEC (1999). 

She began her career as a consultant at McKinsey from 2000 to 2003. In 2003, she joined the Lagardère Active group, where she successively held the positions of Publisher and Managing Director. She was CEO of CMI France from February 2019 to September 2021, when she was appointed President of Prisma Media.  

Claire Léost has been a member of the Vivendi Management Board since June 24, 2022. 

She is also a novelist. 


Positions currently held

Vivendi Group (in France)
Prisma Media, President
Pitcheo, Manager