About Francisco Leon
Francisco Leon is a director at Lapix Therapeutics.
Form D filings also name Francisco Leon as a founder and CEO, director at Tolerance Bio and a director at Paulex Bio.
Experience
This experience comes from Francisco Leon's profile and from SEC filings. For roles taken from filings, the years are when the filings name Francisco Leon in the role, so the role may have started earlier or lasted longer.
IU
IE University Current
Adjunct Professor
2026 – Present
PB
Praetorian Bio Current
Co-Founder, Chairman of the Board
2024 – Present
AT
Avalor Therapeutics Current
Co-Founder, Board Director
2024 – Present
Tolerance Bio Inc. Current
Founder and CEO, director
Founder, CEO, Chairman (2023 – Present)
2023 – Present · Philadelphia, PA
Develops thymus-based therapies for people with immune-mediated diseases.
VS
VAXDYN SL Current
Founding Partner, Board Director
2020 – Present
PH
PharmImmune Current
Founder, President
2010 – Present
G2
Glutenostics [operations transferred to Biomedal in 2025]
Co-Founder, Partner
2016 – 2025
SA
Sanofi
Chief Scientific Officer, Provention Bio - a Sanofi Company
2023 – 2024
P2
Provention Bio [acquired by Sanofi in 2023]
Co-Founder, Chief Scientific Officer
2016 – 2023
JG
Jefferson Medical College, Dept. of Gastroenterology
Adjunct Research Associate Professor of Medicine
2011 – 2020
C2
Celimmune [acquired by Amgen in 2017]
Co-Founder, CEO, Chief Medical Officer
2015 – 2018
JJ
Johnson & Johnson
Vice President & Head, Immunology Translational Medicine
2010 – 2015
AT
Alba Therapeutics [assets acquired by Cephalon/TEVA]
Vice President & Chief Medical Officer
2007 – 2010
ME
MedImmune
Director, Clinical Development, Inflammation & Respiratory
2006 – 2007
BS
Bristol-Myers Squibb
Director, Clinical Discovery, Immunology & Oncology
2004 – 2006
NN
National Institutes of Health (NIH)
Research Fellow, Lab. of Clinical Investigation, Lab. of Molecular Immunology, NIAID
2002 – 2004
Key Colleagues at Startups
The people Francisco Leon works with at each company, as listed on that company's latest Form D.
Tolerance Bio Inc. · Form D, Jun 18, 2026
Philip Ball
SVP, Head of Business Development and Operations, director
DC
Damia Carulla
Director
Justin Vogel
Chief Financial Officer and director
PC
Pablo Cironi
Director
RG
Robert Goldstein
Director
Paulex Bio Inc. · Form D, Dec 18, 2025
Lapix Therapeutics Inc. · Form D, Aug 5, 2025
AF
Anas Fathallah
President and Secretary, director
AG
Anthony Gibney
Director
JN
Jason Norris
Vice President and Treasurer, director
HM
Henry McKinnell
Director