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ROCKVILLE, MD, May 16, 2007—Emergent BioSolutions Inc. (NYSE: EBS) announced today the consolidation of the president and chief operating officer position.  With this change, Daniel J. Abdun-Nabi, the company’s president, will also take on the role of chief operating officer. In this combined role, Mr. Abdun-Nabi will oversee all of the company’s product development, manufacturing and corporate affairs activities.  Mr. Abdun-Nabi will continue to report to Fuad El-Hibri, chairman and chief executive officer of the company.

Specifics of other management changes, which are also effective immediately, include:

• R. Don Elsey is being promoted to the position of senior vice president finance and administration.  Mr. Elsey was formerly vice president finance and administration.  Mr. Elsey will continue to retain his responsibilities as chief financial officer for the company and will now assume additional responsibility for investor relations and human resource activities.  Mr. Elsey will continue to report to Mr. El-Hibri, chairman and chief executive officer.

• Kyle W. Keese is being appointed to the position of senior vice president corporate affairs with responsibility for public affairs, marketing and sales and corporate development.  Mr. Keese was formerly senior vice president marketing and communications.

• Thomas K. Zink, M.D. is assuming the responsibility for clinical development in addition to medical affairs.  Dr. Zink, formerly senior vice president medical affairs, is now senior vice president medical and clinical development.  Dr. Zink will continue to retain his responsibilities as chief medical officer for the company and, in that capacity, will continue to report to Mr. El-Hibri, chairman and chief executive officer.

• Edward J. Arcuri, Ph.D., is resigning his position as chief operating officer.  The resignation is effective immediately.

“Today’s senior management consolidation and associated changes within our corporate organization are designed to strengthen the integration of our development and manufacturing organizations and to enhance the company’s positioning and capabilities in both the biodefense and commercial immunobiotic markets,” said Fuad El-Hibri, chairman and chief executive officer of Emergent BioSolutions Inc.

About Emergent BioSolutions Inc.
Emergent BioSolutions Inc. is a biopharmaceutical company dedicated to one simple mission–to protect life.  We develop, manufacture and commercialize immunobiotics, consisting of vaccines and therapeutics that assist the body’s immune system to prevent or treat disease.  Our biodefense business focuses on immunobiotics for use against biological agents that are potential weapons of bioterrorism or biowarfare.  Our marketed product, BioThrax® (Anthrax Vaccine Adsorbed), is the only vaccine approved by the U.S. Food and Drug Administration for the prevention of anthrax infection.  Our commercial business focuses on immunobiotics for use against infectious diseases and other medical conditions that have resulted in significant unmet or underserved public health needs.  More information on the company is available at www.emergentbiosolutions.com.

Safe Harbor Statement
This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Any statements, other than statements of historical fact, including statements regarding our strategy, future operations, future financial position, future revenues, projected costs, prospects, plans and objectives of management, including our expected revenue growth and net earnings for 2007, and any other statements containing the words “believes”, “expects”, “anticipates”, “plans”, “estimates” and similar expressions, are forward-looking statements. There are a number of important factors that could cause the company’s actual results to differ materially from those indicated by such forward-looking statements, including our performance under BioThrax® sales contracts with the U.S. government, including the timing of deliveries under these contracts; our ability to obtain new BioThrax sales contracts with the U.S. government; our plans for future sales of BioThrax; our plans to pursue label expansions and improvements for BioThrax; our plans to expand our manufacturing facilities and capabilities; the rate and degree of market acceptance and clinical utility of our products; our ongoing and planned development programs, preclinical studies and clinical trials; our ability to identify and acquire or in license products and product candidates that satisfy our selection criteria; the potential benefits of our existing collaboration agreements and our ability to enter into selective additional collaboration arrangements; the timing of and our ability to obtain and maintain regulatory approvals for our product candidates; our commercialization, marketing and manufacturing capabilities and strategy; our intellectual property portfolio; our estimates regarding expenses, future revenue, capital requirements and needs for additional financing; and other factors identified in the company’s Annual Report on Form 10-K for the year ended December 31, 2006 and subsequent reports filed with the SEC. The company disclaims any intention or obligation to update any forward-looking statements as a result of developments occurring after the date of this press release.

Company preparing response to DoD request for proposal for delivery of up to 14 million additional doses of BioThrax

ROCKVILLE, MD, June 27, 2007—Emergent BioSolutions Inc. (NYSE: EBS), a biopharmaceutical company, announced today that, pursuant to the terms of an amended contract with the U.S. Department of Defense (DoD), it anticipates completing delivery of 900,000 doses of BioThrax® (Anthrax Vaccine Adsorbed) during the quarter ending June 30, 2007 or shortly thereafter.  The company anticipates that, with these deliveries, second quarter revenues would be approximately $20 million.  The terms of the amended contract with the DoD authorize delivery of BioThrax ahead of schedule.

The company is also preparing its response to a May 7, 2007 request for proposal from the DoD for a follow-on contract for the supply of up to 14 million doses of BioThrax to the military for its active immunization program.  The request for proposal contemplates a contract term of one base year and three option years.

“Emergent BioSolutions and the DoD have a longstanding relationship and we are pleased to continue to provide doses of BioThrax for the military’s ongoing active immunization program,” said Fuad El-Hibri, chairman and chief executive officer of Emergent BioSolutions.  “By repeatedly fulfilling our commitments to the U.S. Government, we continue to strengthen our reputation for reliability—an essential element of a successful partnership with the government.  I am proud of our role in helping to protect our nation’s troops against biological threats.”

About Emergent BioSolutions Inc.
Emergent BioSolutions Inc. is a biopharmaceutical company dedicated to one simple mission—to protect life.  We develop, manufacture and commercialize immunobiotics, consisting of vaccines and therapeutics that assist the body’s immune system to prevent or treat disease.  Our biodefense business focuses on immunobiotics for use against biological agents that are potential weapons of bioterrorism and biowarfare.  Our marketed product, BioThrax® (Anthrax Vaccine Adsorbed), is the only vaccine approved by the U.S. Food and Drug Administration for the prevention of anthrax infection.  Our commercial business focuses on immunobiotics for use against infectious diseases and other medical conditions that have resulted in significant unmet or underserved public health needs.  More information on the company is available at www.emergentbiosolutions.com.

Safe Harbor Statement
This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Any statements, other than statements of historical fact, including statements regarding our strategy, future operations, future financial position, future revenues, projected costs, prospects, plans and objectives of management, including our expected revenue for the second quarter of 2007, and any other statements containing the words “believes”, “expects”, “anticipates”, “plans”, “estimates” and similar expressions, are forward-looking statements. There are a number of important factors that could cause the company’s actual results to differ materially from those indicated by such forward-looking statements, including our performance under BioThrax sales contract with the U.S. Department of Defense, including the timing of deliveries under that contract; our ability to obtain new BioThrax sales contracts with the U.S. government; our plans for future sales of BioThrax; our plans to pursue label expansions and improvements for BioThrax; our plans to expand our manufacturing facilities and capabilities; the rate and degree of market acceptance and clinical utility of our products; our estimates regarding expenses, future revenue, capital requirements and needs for additional financing; and other factors identified in the company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2007 and subsequent reports filed with the SEC. The company disclaims any intention or obligation to update any forward-looking statements as a result of developments occurring after the date of this press release.

ROCKVILLE, MD, October 19, 2007— Fuad El-Hibri, chairman and chief executive officer of  Emergent BioSolutions, issued the following statement on the passing of Admiral William Crowe, Jr., who served on the company’s Board of Directors from 1998-2005.

“I was deeply saddened to learn of the passing of my dear friend and former colleague, the honorable Admiral William J. Crowe Jr. My thoughts are with his family during this difficult time,” said Fuad El-Hibri, chairman and chief executive officer of Emergent BioSolutions.

“A benevolent and courageous public servant, Admiral Crowe committed his life to serving the nation. He was a candid man who led with nobility and grace, and never wavered in his commitment to the protection of our country. His compassion and boundless love for his family and friends were matched only by his steadfast integrity and tenacious commitment to the United States military and the field of education.  Admiral Crowe’s countless contributions to the American people will not be forgotten, and our nation is fortunate to have known such a dignitary.  The Admiral was an invaluable asset to our company, and I will always remember the great strategic insight and disarming humor he brought to every situation. Emergent BioSolutions is a stronger company as a result of his vision and leadership, and I am particularly grateful for his many years of friendship,” he concluded.

About Emergent BioSolutions Inc.
Emergent BioSolutions Inc. is a biopharmaceutical company dedicated to one simple mission—to protect life.  We develop, manufacture and commercialize immunobiotics, consisting of vaccines and therapeutics that assist the body’s immune system to prevent or treat disease.  Our biodefense business focuses on immunobiotics for use against biological agents that are potential weapons of bioterrorism and biowarfare.  Our marketed product, BioThrax® (Anthrax Vaccine Adsorbed), is the only vaccine approved by the U.S. Food and Drug Administration for the prevention of anthrax infection.  Our commercial business focuses on immunobiotics for use against infectious diseases and other medical conditions that have resulted in significant unmet or underserved public health needs.  More information on the company is available at www.emergentbiosolutions.com.

Dr. Lockhart Brings Top-Tier Pharma Leadership to Development of Company’s Commercial Product Portfolio

ROCKVILLE, MD, October 18, 2007—Emergent BioSolutions Inc. (NYSE: EBS) announced today that Dr. Stephen Lockhart has been appointed President, Emergent Product Development UK.  Dr. Lockhart will be based at the company’s office located in Wokingham, England, and his responsibilities will include providing oversight, leadership, direction and execution of development programs in both the United Kingdom and Germany.  These programs include, among others, the following product candidates: a single-dose oral typhoid vaccine that recently completed a Phase II clinical trial; a drinkable Hepatitis B therapeutic vaccine in a Phase II clinical trial; and a group B streptococcal vaccine candidate that completed a Phase I clinical study and for which further clinical studies are being planned in collaboration with the National Institute of Allergy and Infectious Diseases.

“It is with great pleasure that I welcome Dr. Lockhart to the company,” said Fuad El-Hibri, chairman and chief executive officer of Emergent BioSolutions.  “We are very fortunate to have someone at the helm of our commercial product development efforts with such broad and varied expertise in vaccinology, as well as an intimate understanding of the critical elements involved in the biopharmaceutical industry.  His experience in bringing vaccines through clinical development and regulatory approval makes him ideally suited to lead our commercial product development programs.”

Dr. Lockhart has over fifteen years of experience in vaccine development and most recently was Assistant Vice President and Global Head of Bacterial Vaccine Clinical R&D at Wyeth.  Prior to joining Wyeth in 1990, Dr. Lockhart served as a Medical Adviser with Janssen Pharmaceutical from 1986-1989.

“I am pleased to be joining Emergent BioSolutions and am particularly excited about leading product development for such a diverse portfolio,” said Dr. Lockhart.  “The success of our efforts will potentially help millions of people and I am eager to apply my years of experience towards this exciting portfolio and the mission of the company,” he continued.

Dr. Lockhart is an internationally recognized leader in vaccine-related product development and has been the recipient of multiple awards.  He accepted the Prix Galien, a renowned award given for excellence in pharmaceutical innovation, on behalf of Wyeth in both 2000 and 2005 and received the Wyeth Research President’s Award in 2000 for leading the development of Meningitec, a meningitis C vaccine.

Dr. Lockhart has an MA from Cambridge University and received his advanced medical and research degrees from Oxford University.  In 1983 he became a Member of the Royal College of Physicians and in 1988 received his Diploma in Pharmaceutical Medicine.  After becoming a Member for the Faculty of Pharmaceutical Medicine in 1991, Dr. Lockhart was inducted as a Fellow of the Faculty of Pharmaceutical Medicine in 2003.

About Emergent BioSolutions Inc.
Emergent BioSolutions Inc. is a biopharmaceutical company dedicated to one simple mission—to protect life.  We develop, manufacture and commercialize immunobiotics, consisting of vaccines and therapeutics that assist the body’s immune system to prevent or treat disease.  Our biodefense business focuses on immunobiotics for use against biological agents that are potential weapons of bioterrorism and biowarfare.  Our marketed product, BioThrax® (Anthrax Vaccine Adsorbed), is the only vaccine approved by the U.S. Food and Drug Administration for the prevention of anthrax infection.  Our commercial business focuses on immunobiotics for use against infectious diseases and other medical conditions that have resulted in significant unmet or underserved public health needs.  More information on the company is available at www.emergentbiosolutions.com.

Safe Harbor Statement
This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Any statements, other than statements of historical fact, including statements regarding our strategy, future operations, future financial position, future revenues, projected costs, prospects, plans and objectives of management, including any statements containing the words “believes”, “expects”, “anticipates”, “plans”, “estimates” and similar expressions, are forward-looking statements. There are a number of important factors that could cause the company’s actual results to differ materially from those indicated by such forward-looking statements, including the execution of our strategy by our executive team; our plans to expand our manufacturing facilities and capabilities; the rate and degree of market acceptance and clinical utility of our products; our ongoing and planned development programs, preclinical studies and clinical trials; our ability to identify and acquire or in license products and product candidates that satisfy our selection criteria; the potential benefits of our existing collaboration agreements and our ability to enter into selective additional collaboration arrangements; the timing of and our ability to obtain and maintain regulatory approvals for our product candidates; our commercialization, marketing and manufacturing capabilities and strategy; our intellectual property portfolio; and other factors identified in the company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2007 and subsequent reports filed with the SEC. The company disclaims any intention or obligation to update any forward-looking statements as a result of developments occurring after the date of this press release.