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Yseulys Costes

Yseulys Costes is the Chief Executive Officer and Founder of Numberly 1000mercis Group, a listed company. Passionate about Data and Marketing, Yesulys began to work on Interactivity in 1995, at the Robert O.Anderson School, USA.

Numberly provides their clients with the most innovative digital strategies to increase their ROI in a targeted, measurable, programmatic and multichannel approach. As a researcher in interactive marketing, she has been invited to Harvard Business School and has taught Interactive Marketing at several prestigious institutions including HEC, ESSEC and Paris Dauphine.

Prior to founding Numberly, she wrote numerous books and articles on online marketing and databases and was the coordinator of IAB France. Yseulys has been in Palo Alto, CA since 2014 to launch and develop the group’s U.S. activities. Yseulys is a board member of Kering, Vivendi and SEB.

About numberly (1000mercis Group):

Numberly is a pioneer in Interactive Data Marketing with its award-winning solutions for companies aiming to optimize their customer acquisition and retention through online media (Internet, Mobile with Ocito, Social Media and RTB CRM Display with its own RTB Trading unit, Matiro).

Created in 2000, the 1000mercis Group employs over 400 people worldwide and its annual turnover soared 52,7 million euro in 2015.

Based in Paris, London, New York, Palo Alto, and Dubai, the 1000mercis Group operates in more than 50 countries and is a NYSE Euronext listed company.