Our Leadership

Irv Weissman
Cofounder, Scientific Advisor, Board Director
The foundational research that became Pheast Therapeutics took place in the Weissman Lab, the heart of the Stanford University Institute for Stem Cell Biology and Regenerative Medicine, which Dr. Irv Weissman founded and directed.
This is where our cofounders met and trained in pursuit of scientific discovery. Now, at Pheast, we continue the work of shepherding those discoveries through the clinic and into patient therapies.

Ravi Majeti
Cofounder, Scientific Advisor, Board Observer

Amira Barkal
Principal Founder, Scientific Advisor, Board Director

Roy Maute
Cofounder & Chief Executive Officer

Raphaël Rousseau
Chief Medical Officer

Steve Gillis
Board Director

Jacob Vogelstein
Board Director
Our Investors




Meet the Team
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Alexandria Beans
Senior Research Associate II, Protein Sciences

Grace Blacker
Research Associate II, Biology

Aditi Bapat
Scientist I, Discovery

Cornelio Balmaceda
Senior Animal Technician

Rachel Brewer
Scientist I, Biology

John Burg
Senior Director, Protein Sciences

Jen Cao
Senior Director, Translational Science

Ken Dinyarian
Manager, Information Technology

Mimi Enea
Senior Executive Assistant

Douglas Faget
Senior Scientist I, Biology

Sarah Fernandes
Senior Director, Project Management

Giovanni Forcina
Senior Scientist I, Translational Science

Justin Hansen
Senior Scientist I, Discovery

Suzana Kahn
Senior Director, Biology

Kiren Khanduja
Senior Director, CMC

Pin-Joe Ko
Associate Director, Discovery

Thomas Lopez
Senior Scientist II, Protein Sciences

Priyanka Malusare
Research Associate I, Biology

Thomas Marty
Senior Director, Finance

Ivy Nguyen
Senior Director, Human Resources

Kevin O’Connor
Research Associate II, Discovery

Karmen Pantoja
Senior Associate, Operations

Kaleana Plares
Research Associate II, Protein Sciences

Shefah Qazi
Senior Scientist I, Protein Sciences

Moises Rivera
Manager, Lab

Joseane Sampaio
Senior Research Associate II, Biology

Tiffany van Londen
Associate Director, Business Operations
Juliet Masumi
Senior Research Associate II, Discovery
Juliet has more than 10 years of research experience spanning the fields of cell and molecular biology and therapeutics. At Pheast, Juliet performs in vitro and in vivo experiments to study novel immuno-oncology targets. Prior to joining Pheast, she worked at Alkahest Inc., where she was helping to develop therapeutics against aging-related diseases. Juliet received a B.S. in Cell and Developmental Biology from California State University, Fullerton.
Juliet Masumi
Senior Research Associate II, Discovery
Kelsey Hart
Senior Research Associate II, Translational Science
Kelsey Hart
Senior Research Associate II, Translational Science
Seth Ludwig
Scientist II, Protein Sciences
Seth Ludwig has experience in protein engineering and molecular biology. At Pheast, he leads antibody discovery and affinity maturation programs for drug candidate selection. Prior to joining Pheast, Seth studied how multi-specific antibodies alter cell surface receptor trafficking and the pharmacokinetics of atypically glycosylated antibodies. Seth received a Ph.D. in chemical engineering from Johns Hopkins University and a B.S. in chemical engineering from the Rensselaer Polytechnic Institute.
Seth Ludwig
Scientist II, Protein Sciences
Susan Luebbe
Vice President, Clinical Operations
Susan Luebbe
Vice President, Clinical Operations
Careers
We believe in improving lives, and we’re inspired by those in our families and communities impacted by cancer. Our fundamental purpose is to defy cancer and help patients thrive. If you share this aspirational goal and have the courage to be exceptional and take on the challenges that lay ahead, check out our open positions.

