Klaus Breiner in

Klaus Breiner

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Co-founder and Managing Director at Pureos Partners AG
📍 Freienbach, Schwyz, Switzerland

Klaus Breiner is the Managing Partner and Co-founder of Pureos Bioventures, a Swiss venture capital firm focused on innovative drug development. With a Ph. D. from Heidelberg University, he has co-founded multiple biotech companies, including Vaximm AG, and serves on the boards of several portfolio companies.

He has a strong international academic background, having studied at both Heidelberg University in Germany and The University of North Carolina at Chapel Hill in the US. His work is driven by a focus on developing treatments for severe diseases through strategic investments.

His firms portfolio company, Araris Biotech, was recently part of one of the largest pre-clinical oncology transactions in history.

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Current Role
Co-founder and Managing Director
Job Level
Leadership
Location
Freienbach, Schwyz, Switzerland
Personality Overview

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Decision Approach
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Priorities

Topics Klaus cares about

Biotech Venture Capital
He co-founded and leads Pureos Bioventures, a fund that invests exclusively in private, innovative drug development companies across Europe.
Oncology Drug Development
He has overseen major investments and successful exits in cancer therapeutics, including companies like ImCheck Therapeutics (AML) and Araris Biotech.
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Career

Work history

Co-founder and Managing Director
Pureos Partners AG
Non-executive Director
VICO Therapeutics B.V.
Managing Partner
Pureos Bioventures
Partner
BB Biotech Ventures
1-2022
Co-Founder & Vice-Chairman (Executive Chairman till mid-2016)
Vaximm AG
In the press

Media appearances

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Education
1995 - 1998
Ph.D. (Dr.rer.nat.)
Heidelberg University
1994 - 1995
Master of Arts (M.A.)
The University of North Carolina at Chapel Hill
Social presence
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Behavioral profile

DISC profile (public)

DISC behavioral profile

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