Founder of 1000mercis SA, Yseulys Costes is Chairman & Chief Executive Officer at this company. Ms. Costes is also on the board of Kering SA, SEB SA and Ocito SA (former Chairman-Supervisory Board) and Member of Conseil pour la Diffusion de la Culture Économique.

In her past career she held the position of Member of Conseil des Entreprises et Groupements de l'Economie Sociale.

Ms. Costes received a graduate degree from Université Paris Dauphine, an undergraduate degree from Université Paris 1 and an MBA from Anderson School of Management.