Find your path to Stéphane
199 people in our graph share verified history with Stéphane — schools, employers, funds. One of them is your warm intro.
Nico Takano MeierunlockedStéphane: together at MEXBRAIN (2026)
×9Stéphane: together at emlyon business school
×2Stéphane: together at Université Claude Bernard Lyon 1
About
Stéphane Legastelois is President of Mexbrain, a startup developing chelatant molecules to remove free metals from biological fluids, and also serves as President of 33 Californie and Calyseed, both active in health-focused capital innovation. He holds board positions at several startups, SMEs, and private equity entities, including Stromacare, 3Deus Dynamics, Mag4Health, and Mabdesign, and previously worked as a Director at Greensea and as Sales & Marketing Manager at Merck beginning in 1998. Legastelois earned a Ph.D. in Immunology from the University of Lyon and additional training in marketing and management from EM Lyon, and founded Indicia Biotechnology, a contract research organization, in 1998.
Co-founder at Sirius Neosight
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In turn, Stéphane can intro founders to Sirius Neosight's investors below.
Sirius Neosight's investors · 2
Co-founders at Sirius Neosight
AV
Arnaud VigneronCo-founder
DG
David GueyrardCo-founder
JL
Jean-Guillaume LafayCo-founder
Experience
- MEXBRAINPresidentcurrent2026 — presentLyon
- CalyseedPresidentcurrent2023 — presentLyon, Auvergne-Rhône-Alpes, France
- 33 CaliforniePresidentcurrent2019 — presentLyon, Auvergne-Rhône-Alpes, France
- Mabdesign, Angelor, Stromacare, Lipther, Allogenica, Kairos Discovery, Alga Biologics....Member Board Of Directors/Advisorscurrent2019 — presentFrance
- GREENSEAManaging Director2023 — 2025Mèze, Occitanie, France
- SIMBA SANTE 3President2019 — 2023Lyon, Auvergne-Rhône-Alpes, France
- TransCure bioServicesPresident2016 — 2022Archamps - France
- Indicia ProductionPresident2008 — 2021St Genis l'Argentière (69) France
- Platine Pharma ServicesCEO2013 — 2016Lyon Area, France
- MabdesignPresident2015 — 2016Lyon Area, France
- Indicia BiotechnologyPresident & CEO1998 — 2013Oullins (Lyon area)
- Merck KGaAMarketing & Sales Export Manager - Estapor division1998 — 2001Val de Fontenay (Paris area)
- Start-up companyR&D Manager1995 — 1998Lyon
- INSERM Unité d'ImmunologieProject leader1991 — 1995Hopital Lyon-Sud - Lyon area
- University Claude Bernard of LyonMoniteur de l'Enseignement Supérieur1990 — 1992
- High Scool DidactaTeacher1989 — 1991Lyon
Skills & more
Biotechnology40Lifesciences13Entrepreneurship6Technology Transfer6Immunology20Hardware Diagnostics3R&D19Assay Development9Medical Devices6Clinical Development7Infectious Diseases6Drug Development2
+9 more
Molecular BiologyBiochemistryBiopharmaceuticalsValidationMicrobiologyCell BiologyPCRIn VitroPharmaceutical IndustryLanguages English · French
From Stéphane's professional profile.
Frequently asked questions
- Who is Stéphane Legastelois?
- Stéphane Legastelois is President of Mexbrain, a startup developing chelatant molecules to remove free metals from biological fluids, and also serves as President of 33 Californie and Calyseed, both active in health-focused capital innovation. He holds board positions at several startups, SMEs, and private equity entities, including Stromacare, 3Deus Dynamics, Mag4Health, and Mabdesign, and previously worked as a Director at Greensea and as Sales & Marketing Manager at Merck beginning in 1998. Legastelois earned a Ph.D. in Immunology from the University of Lyon and additional training in marketing and management from EM Lyon, and founded Indicia Biotechnology, a contract research organization, in 1998.
- Where does Stéphane Legastelois work?
- Stéphane Legastelois is Co-founder of Sirius Neosight.
- What companies did Stéphane Legastelois found?
- Stéphane Legastelois founded Sirius Neosight.
- Where did Stéphane Legastelois go to school?
- Stéphane Legastelois studied at Université Claude Bernard Lyon 1 (Ph-D, Immunology & Biochemistry); emlyon business school (DUA (Diriger Une Activité), Business); emlyon business school (Programme d'Appui à la Création d'Entreprise).
Founder mafias
emlyon business school mafia30
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Nicolas JuliaMsc in ManagementFounded SorareBenoit LemaignanMOOCFounded Waga Energy +2Miguel Santo AmaroMaster's degreeFounded Coverflex +1Lionel MoraMsc. in Management (Top 10 Financial Times 24)Founded Neoplants +1Laetitia AndracMaster of Science (M.Sc.)Founded Understanding Zoe +1Paul-Louis BisbarreProgramme Grande EcoleFounded Boks
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Université Claude Bernard Lyon 1 mafia14
Also came through, then founded or led a company.
Kevin HeyriesPhDFounded AbCellera +1Josef RokusekFounded HyLightJean Baptiste MorlotMaster 2Founded DeeplifeNatacha Bonjout, Pharm.D.Master of Science in Cosmetology (IPIL & EM Lyon Partnership)Founded BonjoutbeautyXavier PrevillePhDFounded AdcytherixMarie Eve DidierBachelor's degreeFounded MATIS (CSEM)
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Same school
Also attended Université Claude Bernard Lyon 125
Anne-Sophie Saint-MartinPartner at Newfund CapitalConstant BeroulleAssociate at Newfund CapitalAlex GerbaudInvestment Director at InnovacomTom BeauvironnetInvestment Manager at KaristaThierry ChignonManaging Partner at Mérieux Equity PartnersAlexia PerouseManaging Partner and CEO at iBionext
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Also attended emlyon business school159
Nicolas JuliaCo-founder & CEO of SorarePaul BazinInvestor at DaphniThomas JuvinManaging Director Europe at Burda Principal InvestmentsAdvika JalanResearch Analyst at MMC VenturesAnne-Sophie Saint-MartinPartner at Newfund CapitalConstant BeroulleAssociate at Newfund Capital
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