Investing Profile

Joël Jean-Mairet

VC
Managing Partner and co-Founder at Ysios Capital
ysioscapital.com/management-t...
Photo of Joël Jean-Mairet, Managing Partner at Ysios Capital
Your Intro Paths to Joël Jean-Mairet

Signal uses Gmail to reveal intro paths. Email content is never read.

Sign in with Google →
Networks Joël is a member of
Hotmail Network
4899 CONNECTIONS
Hotmail Network
4899 CONNECTIONS
Hotmail Network
4899 CONNECTIONS
Hotmail Network
4899 CONNECTIONS
Eidgenössische Technische Hochschule Zürich Network
38 CONNECTIONS

Find Joël Jean-Mairet on

cb
Current Investing Position
Ysios Capital Managing Partner
Investment Range
$1M - $7.5M
Sweet Spot
$1M
Investments On Record
26
Current Fund Size
€126.4M

Joël Jean-Mairet is on these Sector & Stage Rankings

Joël Jean-Mairet's Investments On Record (10)

CompanyStageDateRound SizeTotal Raised
Ona Therapeutics
Series BJun 2026$87M
Series AJun 2020$34M
$130M
Co-investors: Jose Mesa (Columbus Venture Partners)
ADCendo
Series CApr 2026$75M
Series BNov 2024$140M
Series AApr 2023$34M
Series AApr 2021$62M
$320M
Co-investors: Ohad Hammer (Xtripe Angels), Iyona Rajkomar (Pontifax Venture Capital), Reza Halse (RA Capital Management), Marten Steen (HealthCap), Rajul Jain (Vida Ventures, LLC)
Splice Bio
Series BJun 2025$140M
Series AFeb 2022$57M
Series UnknownSep 2020
$190M
Co-investors: Ed Mathers (New Enterprise Associates (NEA)), Sylvain Sachot (Asabys Partners), Beat Steffen (Novartis Venture Fund), Daniela Begolo (INKEF Capital), Laia Crespo (Sanofi Ventures), Carole Nuechterlein (F.Hoffmann-La Roche)
Mineralys Therapeutics
Series BJun 2022$120M
$240M
Co-investors: Olivier Litzka (Andera Partners), Derek DiRocco (RA Capital Management)
Aura Biosciences
Post Ipo EquityNov 2021
Series UnknownMar 2021$80M
Series CDec 2017$30M
Series BMar 2015$21M
$130M
Co-investors: Mark Chin (Jmi Equity)
Lava Therapeutics
Series CSep 2020$83M
$100M
Co-investors: Guido Magni (Versant Ventures), Nanna Luneborg (Forbion), Laia Crespo (Sanofi Ventures)
AM Pharma
Series UnknownMar 2020$25M
Series FJul 2019$130M
Series ESep 2014$16M
Series DSep 2011$40M
$210M
Co-investors: Geert-Jan Mulder (Forbion), Laia Crespo (Sanofi Ventures), Rémi Droller (Kurma Partners), Martijn Kleijwegt (EQT Life Sciences), Felice Verduyn - van Weegen (EQT Group), Raphael Wisniewski (Andera Partners)
Medlumics
Series BMar 2017$37M
Series ADec 2011$5M
$64M
Co-investors: Olivier Litzka (Andera Partners)

Joël Jean-Mairet's Experience

Chairman of the Board HotmailPresent
Board observer Biovex Inc (now Amgen)Present
Board observer HotmailPresent
Director Tigenix N.V.Present
Director Medlumics S.L.Present
Director AM-Pharma B.V.Present
Director HotmailPresent
Chairman of the Board Inbiomotion S.L.Present
Director Dermalumics S.L.Present
Director Aura BiosciencesPresent
Director Sanifit LaboratorisPresent
Director Rainier TherapeuticsPresent
Board Observer AM-PharmaPresent
Director Ona TherapeuticsPresent
Director SpliceBioPresent
Director ADCendoPresent
Board observer Mineralys Therapeutics, Inc.Present
CEO and co-founder HotmailPresent
Managing Partner and co-Founder Ysios CapitalPresent

Joël Jean-Mairet's Education

Eidgenössische Technische Hochschule Zürich PhD, MSc Biotechnology, Cell Biology, Therapeutic Antibodies
Eidgenössische Technische Hochschule Zürich PhD MSc, Biotechnology, Cell Biology, Therapeutic Antibodies

Founders who looked at Joël Jean-Mairet's profile also looked at these Scouts & Angels

Photo of Justin Waldron, Angel

Photo of Brad Holden, Managing Partner

Photo of Miras Mami, Investor

Photo of Morgan Beller, General Partner