Presentation of North America's first certificate for BS 25999, the new standard for Business Continuity

Press release - Reston, VA - July 8, 2008

BSI announced today that Repligen Corporation, Waltham, MA (NASDAQ: RGEN); the world’s leading supplier of recombinant Protein A, a consumable used in the manufacture of monoclonal antibodies, the fastest growing segment of the biopharmaceutical industry has achieved BS 25999 certification. Repligen is the first company in North America to have achieved certification for their commitment to ensuring business continuity in the event of disaster or disruption.

BS 25999 is a visionary standard designed to keep your business going during the most challenging and unexpected circumstances. It provides a basis for understanding, developing, implementing and managing business continuity within your organization and gives you confidence when dealing with stakeholders both within and outside your organization. BS 25999 is an auditable standard which means that through certification, you have a framework for continual improvement and the ability to demonstrate to your stakeholders that your BCM program meets globally accepted best practice.

“By earning BS 25999 certification, Repligen is clearly demonstrating their commitment to ensure continued operation in the face of any potential cause of business disruption,” said Gary Pearsons, President of BSI Management Systems.  “Repligen is the first company in North America to achieve BS 25999 certification. This is just one more example of the leadership role Repligen has earned in their industry. Through the combined strength of Repligen implementing a disciplined management system and BSI providing independent verification and certification; Repligen’s stakeholders and customers can be assured of the resiliency of their operations.”

“Repligen is at the head of a long and growing list of leading-edge companies wishing to prove that they are doing what is required to protect their businesses, their stakeholders, and their customers,” Pearsons added.

"As the world’s leading supplier of recombinant Protein A, we felt that it was important to be on the cutting edge of business continuity to ensure an uninterrupted supply of products to our customers and ultimately to patients,” stated Walter C. Herlihy, President and Chief Executive Officer of Repligen Corporation. “Implementation of and certification to BS 25999 has helped Repligen become more resilient, and agile by providing valuable insight into the issues and challenges that we may face in the event of a business interruption. We are very proud to be the first company in North America to have gained certification."