Founders

Decades of experience, one shared mission

Imagine Group was founded by Markus Sieger and Claudia Mitchell, whose deep involvement in the life sciences spans operational, advisory, and board-level roles across the biotech and pharma spectrum.

With more than 30 years of experience each, our founders have led and supported companies from concept to commercialization — serving as CEOs, board members, scientific advisors, and investors. Their networks span top research institutions, leading biotech hubs, and strategic partners across the globe.

At the core of Imagine Group is a belief in building enduring relationships — with founders, researchers, and fellow investors — to bring better health outcomes to patients around the world.

Founder

Markus Sieger

Markus Sieger is an accomplished entrepreneur and senior executive with extensive leadership experience in dynamic sectors, including pharmaceuticals, FMCG, media, and digital industries. His career spans diverse markets, particularly in Asia and Central/Eastern Europe.

Markus has served on various boards of directors for both publicly listed companies (NYSE, NASDAQ, LSE, WSE) and private entities, bringing strategic oversight and governance expertise.

For over a decade, Markus held the position of CEO at Polpharma Group, a leading vertically integrated pharmaceutical company headquartered in Amsterdam, generating annual revenues exceeding €1.2 billion.

As a committed entrepreneur, Markus co-founded Reaction.Global, a venture capital platform, and successfully launched multiple businesses, demonstrating his strength in innovation, strategic growth, and global market expansion.

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Founder

Dr. Claudia Mitchell

Global experience in top-tier institutions on four continents, with 25 years of experience in cell and gene therapy.

All-around experience in the life science industry, with positions in academia, non-profit, biotech, pharmaceutical companies, and venture capital.

More than two decades of scientific and executive leadership building biotech start-up companies, defining medical research strategy, and leading drug development from basic research to clinical trials.

Awarded EY Entrepreneur of the Year in life sciences.

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