REPLIGEN CORP

Repligen Corporation is a life sciences company that develops and commercializes bioprocessing technologies and systems used in the production of biopharmaceuticals. The company's core offering centers on Protein A ligands, which serve as binding components in Protein A affinity chromatography resins used to purify biologics. This product line represents a foundational technology in downstream biopharmaceutical manufacturing.

Beyond Protein A ligands, Repligen manufactures a diversified portfolio of bioprocessing equipment and consumables. Its chromatography products include OPUS pre-packed columns for biologics purification and smaller-scale columns for process development and validation. The company also produces filtration systems such as XCell ATF Cell Retention Systems for upstream cell culture processing and TangenX cassettes for downstream concentration and formulation tasks. Additionally, Repligen offers process analytics products under the SoloVPE, FlowVPE, and FlowVPX brands, along with ELISA test kits and cell culture growth factor products.

Repligen sells to biopharmaceutical manufacturers, contract manufacturing organizations, life sciences companies, and laboratory researchers across North America, Europe, and Asia Pacific. The company was incorporated in Delaware in 1981 and maintains headquarters in Waltham, Massachusetts. Repligen has established a collaboration agreement with Navigo Proteins GmbH focused on developing multiple affinity ligands for bioprocessing applications.