Joël Séché
Net worth: 461 M $ as of 29/06/2026
Net worth: 461 M $ as of 29/06/2026
Joël Séché is the founder of Séché Environnement SA, founded in 1981, serving as Chairman since 2019.
Mr. Séché is the founder of Alcea SASU (Nantes), founded in 2012.
Current jobs include Chairman of Groupe Séché SAS, Chairman of Mecomer SRL, Chairman of Depo SRL, Director of Tredi Environnement SA, Director of Pari Mutuel Urbain SA, Director of Solarca SL, Director of 3AB Optique Expansion SAS, Director of SCI F2L, Director of Soluciones Ambientales Del Norte SA, Director of Kanay Sac, Non-Executive Director of Spill Tech Pty Ltd., Director of Ciclo SA, Manager of Cimarosa Investissements SAS, Manager of Galilée Partenaires SC, Manager of Cimarosa Tubes, Manager of Société Civile Immobilière Etoile, Manager of La Croix des Landes SCI, Manager of Les Chenes Secs SCI, Manager of Mézerolles SCI, Manager of SCI la Montre, Manager of SCI de la Censie, Manager of SCI Saint Kiriec, Manager of Sci La Perrée, Co-Manager of SCI Mauryland, Manager of Galilée Partenaires II, Manager of Cimarosa Media, Manager of Cimarosa II, Manager of SE Wagram, Manager of Moussecarie, Manager of SCI Capri, Manager of Société Civile Equa, Manager of Firoki, Manager of SCI Carmel, Managing Partner of AlphaOmega SC, Manager of Sci Les Chenes Secs, and Manager of Sci De Mezerolles.
Former jobs include Chairman & Chief Executive Officer of Altamir Gérance SA, Chairman of Saur SAS from 2008 to 2012, Chairman-Supervisory Board of Altamir SCA from 2007 to 2015, Chairman of Seche Eco-Industries SAS, Chairman of Séché Éco-Services SAS, Chairman of 3AC Finance SAS, Chairman of Séché Alliance SASU, Chairman of Alphaomega Foundation, Chairman of Séché Transport SAS, Director of Tredi SA, Non-Executive Director of Interwaste Holdings Ltd., Director of Taris (Peru), Principal of Copernic SAS, Member-Supervisory Board of Holding d'Infrastructures des Métiers de l'Environnement SAS in 2012, Manager of Amboise SAS, Manager of Longchamp SAS, and Member-Supervisory Board of Thom Group SAS.
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
SECHE ENVIRONNEMENT SA 64.53% | 01/06/2026 | 5,070,293 ( 64.53% ) | 461 M $ | 29/06/2026 |
| Companies | Position | Start |
|---|---|---|
| SÉCHÉ ENVIRONNEMENT SA | Founder | 19/10/1981 |
SE Wagram | Corporate Officer/Principal | - |
Cimarosa Media | Corporate Officer/Principal | - |
Cimarosa II | Corporate Officer/Principal | - |
Galilée Partenaires II | Corporate Officer/Principal | - |
Moussecarie | Corporate Officer/Principal | - |
Société Civile Immobilière Etoile | Corporate Officer/Principal | - |
SCI Capri | Corporate Officer/Principal | - |
Firoki | Corporate Officer/Principal | - |
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Active
Inactive
Listed companies
Private companies
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
| Private companies | 55 |
|---|---|
Saur SAS
Saur SAS Environmental ServicesIndustrial Services Provides water treatment and management services | Industrial Services |
Séché Environnement SA
Séché Environnement SA Environmental ServicesIndustrial Services Provides waste management and treatment services | Industrial Services |
Tredi Environnement SA
Tredi Environnement SA Environmental ServicesIndustrial Services Provides environmental consultancy and waste management services | Industrial Services |
Altamir SCA
Altamir SCA Investment Trusts/Mutual FundsMiscellaneous Functions as a private equity fund | Miscellaneous |
Groupe Séché SAS
Groupe Séché SAS MiscellaneousMiscellaneous Operates as a holding company | Miscellaneous |
Tredi SA
Tredi SA Environmental ServicesIndustrial Services Provides waste treatment services | Industrial Services |
Cimarosa Investissements SAS
Cimarosa Investissements SAS Financial ConglomeratesFinance Private investment vehicle | Finance |
Pari Mutuel Urbain SA
Pari Mutuel Urbain SA Casinos/GamingConsumer Services Operates as a horse race betting company | Consumer Services |
Copernic SAS
Copernic SAS Financial ConglomeratesFinance Provides financial investment services | Finance |
Holding d'Infrastructures des Métiers de l'Environnement SAS
Holding d'Infrastructures des Métiers de l'Environnement SAS Water UtilitiesUtilities Provides water distribution services | Utilities |
Interwaste Holdings Ltd.
Interwaste Holdings Ltd. Environmental ServicesIndustrial Services Provides commercial and industrial waste management services | Industrial Services |
Amboise SAS
Amboise SAS Financial ConglomeratesFinance Provides investment services | Finance |
Longchamp SAS
Longchamp SAS Consumer SundriesConsumer Non-Durables Manufactures and markets handbags | Consumer Non-Durables |
Seche Eco-Industries SAS
Seche Eco-Industries SAS Environmental ServicesIndustrial Services Engages in treatment and disposal of hazardous waste | Industrial Services |
Seche Eco-Services SAS
Seche Eco-Services SAS Environmental ServicesIndustrial Services Engages in processing of industrial and household waste | Industrial Services |
Solarca SL
Solarca SL Miscellaneous Commercial ServicesCommercial Services Provides chemical cleaning, air and steam blowing industrial services | Commercial Services |
3AB Optique Expansion SAS
3AB Optique Expansion SAS Specialty StoresRetail Trade Engages in retail sale of optical goods | Retail Trade |
SCI F2L
SCI F2L Financial ConglomeratesFinance Functions as holding company | Finance |
3AC Finance SAS
3AC Finance SAS Finance/Rental/LeasingFinance Engages in finance business | Finance |
Galilée Partenaires SC
Galilée Partenaires SC Financial ConglomeratesFinance Provides investment services | Finance |
Cimarosa Tubes | |
Société Civile Immobilière Etoile | |
Séché Alliance SASU
Séché Alliance SASU Information Technology ServicesTechnology Services Provides information technology and computer related services | Technology Services |
Sci La Croix des Landes | |
Les Chenes Secs SCI | |
Mézerolles SCI | |
SCI la Montre | |
SCI de la Censie | |
SCI Saint Kiriec | |
Sci La Perrée | |
Thom Group SASU
Thom Group SASU Specialty StoresRetail Trade Operates as a holding company with interests in jewelry retail | Retail Trade |
SCI Mauryland | |
Galilée Partenaires II | |
Cimarosa Media | |
Cimarosa II | |
SE Wagram | |
Moussecarie | |
SCI Capri | |
Société Civile Equa | |
Firoki | |
SCI Carmel | |
Alphaomega Foundation | |
Altamir Gérance SA
Altamir Gérance SA Investment ManagersFinance Altamir Gérance SA is an active manager. | Finance |
AlphaOmega SC | |
Séché Transport SAS
Séché Transport SAS Marine ShippingTransportation Provides chartering and transportation organization services | Transportation |
Mecomer SRL
Mecomer SRL TruckingTransportation Provides hazardous waste management services | Transportation |
Soluciones Ambientales Del Norte SA | |
Kanay Sac
Kanay Sac Miscellaneous Commercial ServicesCommercial Services Provides environmental solutions services | Commercial Services |
Spill Tech Pty Ltd.
Spill Tech Pty Ltd. Environmental ServicesIndustrial Services Provides hazardous waste management services | Industrial Services |
Ciclo SA
Ciclo SA Environmental ServicesIndustrial Services Provides water waste management services | Industrial Services |
Taris (Peru) | |
Sci Les Chenes Secs | |
Sci De Mezerolles | |
Depo SRL
Depo SRL TruckingTransportation Provides furniture transportation and logistics services | Transportation |
ALCEA SAS /Nantes/
ALCEA SAS /Nantes/ Environmental ServicesIndustrial Services Operates as a waste treatment and recovery centre | Industrial Services |
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