Repligen Corporation Repligen, a global, bioprocessing-focused life sciences company, provides innovative solutions for the advancement of biotherapeutic manufacturing. Experts in filtration, chromatography systems, process analytics, fluid management, and proteins, Repligen is a trusted partner serving the development and manufacture of a wide range of biologics, including cell and gene therapies, mRNA, monoclonal antibodies (mAbs), antibody–drug conjugates (ADCs), bispecific antibodies, and fusion proteins. Headquartered in Waltham, Massachusetts, USA, Repligen operates across 22 sites, including locations in the United States, Europe, and the Asia-Pacific region.