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About Us

Celonic is a privately-owned Contract Development Manufacturing Organization (CDMO) with three state-of-the-art sites in Basel, Switzerland (headquarters), Stein AG, Switzerland, and Heidelberg, Germany. Celonic provides comprehensive GMP development and manufacturing services for biologics and cell and gene therapies. Our portfolio includes the development of cell lines and production processes as well as non-GMP and GMP manufacturing of biopharmaceutical drug substances and drug products.

Company History

As part of privately-owned and independent family business JRS, J. RETTENMAIER & Söhne Group, Celonic’s history is a success story. In over 30 years, the company has continuously expanded from research projects to GMP manufacturing for Clinical Phase III material with commercial market supply. Celonic has a track record of more than 25 years of experience in GMP manufacturing and will drive your breakthrough developments all the way to the patients and to market success.

Supporting you from Discovery to Market Success

As your end-to-end solutions provider, we develop and offer multi-scale commercial manufacturing of biologics, vaccines and Advanced Therapeutic Medicinal Products (ATMPS) from DNA to commercial supply. We support you from CMC-compliant cell line development to a drug product for clinical application, including analytics and documentation. To streamline your projects, our highly skilled and experienced teams go one step beyond expectations.

Our Services

  • Process Development
  • Analytics
  • Quality Control
  • Manufacturing
  • Fill and Finish
  • Product Release

Our Molecules


  • Antibodies
  • Blood factors
  • Multi-Specific Proteins
  • Fusion Proteins


Cell and Gene Therapies

  • mRNAs
  • Viral Vectors
  • Cell Therapies
  • EVs

Why Us?

We will help you successfully navigate the path from early discovery to commercialization, and make your journey as easy as possible.

  • 25+ years GMP experience
  • Speed without quality compromises
  • Fully integrated services
  • Industry-leading facilities
  • Multi-talented team of experts


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