Repligen Corporation (NASDAQ:RGEN) is a life sciences company focused on the development and commercialization of high-value consumable products used in the process of manufacturing biological drugs. Our bioprocessing products are sold to major life sciences and biopharmaceutical companies worldwide. We are the leading manufacturer of Protein A affinity ligands, a critical component of Protein A media that is used to separate and purify monoclonal antibody therapeutics. Our ATF (Alternating Tangential Flow) System and our growth factor products are used to increase product yield during the fermentation stage of biologic drug manufacturing. In addition, we developed and market an innovative line of “ready-to-use” chromatography columns under our OPUS® brand (Open-Platform User-Specified) that we deliver prepacked with our customers’ choice of purification media. Repligen’s corporate headquarters are in Waltham, MA (USA) and our manufacturing facilities are located in Waltham, MA and Lund, Sweden.