Yseulys Costes


Yseulys Costes
Member of the Supervisory Board

Member of the Supervisory Board

French citizen

Business address:

28, rue de Châteaudun
75009 Paris – France

Expertise and experience:

Ms. Yseulys Costes was born on December 5, 1972, and holds a master’s degree in Management Science and a postgraduate degree in Marketing and Strategy from Paris IX Dauphine University. Ms. Costes attended Harvard Business School (United States) as a guest researcher in interactive marketing and teaches interactive marketing at several institutions (HEC, ESSEC and Paris IX Dauphine University).

Since February 2000, Ms. Costes has been the Chairwoman, Chief Executive Officer and founder of 1000mercis.

Ms. Costes is the author of numerous books and articles about online marketing and database management. For two years, she was the coordinator of the Interactive Advertising Bureau France (IAB) before founding 1000mercis in February 2000. 1000mercis, which specializes in advertising and interactive marketing, has offices in Paris, London, San Francisco, New York and Dubai.

1000mercis is listed on Alternext by Euronext Paris.

Ms. Costes, who, in 2001, was voted “Internet Woman of the Year”, was a member of the Entrepreneurs Council (Conseil des Entrepreneurs), which reports to the French Secretary of State for Business and Foreign Trade (Secrétariat d’État aux Entreprises et au Commerce Extérieur), and is a member of the Council for the Development of Economic Literacy (Conseil pour la Diffusion de la Culture Économique), of the Digital Relations Experts Group (Groupe d’Experts de la Relation Numérique) and of the Steering Committee of France’s Strategic Investment Fund (Fonds Stratégique d’Investissement), and is a member of the Council for Simplification of the State and of the City of Paris Strategic Council.

Positions currently held

1000mercis, Chairwoman and Chief Executive Officer

Other positions and functions

Kering (*), Director and member of the Audit Committee, of the Compensation Committee, and of the Strategy and Development Committee
SEB (*), Director


Positions previously held that have expired during the last fi ve years

Numergy, member of the Supervisory Board


(*)    Listed companies.