Yseulys Costes

Chief Executive Officer at 1000MERCIS

Net worth: 47 830 $ as of 30/12/2025

53 year

88 connections

Consumer Services

Commercial Services

Consumer Non-Durables

Profile

Yseulys Costes is the founder of 1000mercis SA, serving as Co-Chief Executive Officer since 2000.
Current jobs include Chairman at Positive Ympact SAS since 2022, Independent Director at SEB SA since 2013, Member-Supervisory Board at Ocito SA since 2012, Member of the Strategy Board at City of Paris, and Member at Conseil pour la Diffusion de la Culture Économique.
Former jobs include Independent Director at Kering SA from 2010 to 2022, Member-Supervisory Board at Vivendi SE from 2013 to 2017, Member at Conseil des Entreprises et Groupements de l'Economie Sociale, Member-Supervisory Board at Made in Presse from 2010 to 2012, and Member-Supervisory Board at Numergy SAS. Education includes undergraduate degrees from Université Paris 1 Panthéon-Sorbonne, undergraduate and graduate degrees from Université Paris Dauphine-PSL, and an MBA from Anderson School of Management.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
SEB SA 0%	30/12/2024	825 ( 0% )	47 768 $	30/12/2025
1000MERCIS SA 0%	14/10/2024	2 ( 0% )	62 $	30/01/2025

Yseulys Costes active positions

Companies	Position	Start
1000MERCIS	Chief Executive Officer	10/02/2000
SEB S.A.	Director/Board Member	13/05/2013
Ocito SA Ocito SA Miscellaneous Commercial ServicesCommercial Services Specializes in mobile network marketing and advertising	Director/Board Member	-
Conseil pour la Diffusion de la Culture Économique	Corporate Officer/Principal	-
City of Paris City of Paris MunicipalityGovernment Functions as a local level government authority	Corporate Officer/Principal	-
Positive Ympact SAS Positive Ympact SAS Positive Ympact SAS is a private company based in Paris, France.	Chairman	03/02/2022

All active positions of Yseulys Costes

Former positions of Yseulys Costes

Companies	Position	End
KERING	Director/Board Member	27/04/2022
VIVENDI SE	Director/Board Member	24/04/2017
Made in Presse	Director/Board Member	31/12/2011
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Training of Yseulys Costes

Experiences
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Private companies

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Linked companies

Private companies	14
Vivendi SE Vivendi SE Media ConglomeratesConsumer Services Provides media and telecommunication services	Consumer Services
1000mercis SA 1000mercis SA Miscellaneous Commercial ServicesCommercial Services Provides interactive advertising and marketing solutions	Commercial Services
Kering SA Kering SA Consumer SundriesConsumer Non-Durables Designs, manufactures and sells leather goods, luxury apparel and accessories	Consumer Non-Durables
SEB SA SEB SA Electronics/AppliancesConsumer Durables Engages in the manufacturing of small domestic equipment and cookware	Consumer Durables
Université Paris 1 Panthéon-Sorbonne Université Paris 1 Panthéon-Sorbonne Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Université Paris Dauphine-PSL Université Paris Dauphine-PSL Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Ocito SA Ocito SA Miscellaneous Commercial ServicesCommercial Services Specializes in mobile network marketing and advertising	Commercial Services
City of Paris City of Paris MunicipalityGovernment Functions as a local level government authority	Government
Conseil pour la Diffusion de la Culture Économique
Conseil des Entreprises et Groupements de l'Economie Sociale
Made in Presse
Anderson School of Management Anderson School of Management Functions as a College/University
Numergy SAS Numergy SAS Provides cloud computing services
Positive Ympact SAS Positive Ympact SAS Positive Ympact SAS is a private company based in Paris, France.