<img src="https://ml.globenewswire.com/Resource/Download/56a9097d-af91-4bcf-8c42-5905e1614ef1?size=2" nborder="0" align="left" hspace="5" vspace="5" title="emerge.png" alt="Emergent BioSolutions"/>GAITHERSBURG, Md., Sept. 01, 2026 <a href="https://www.globenewswire.com" target="_blank">(GLOBE NEWSWIRE)</a> -- Emergent BioSolutions Inc. (NYSE: EBS) today announced a contract modification valued at approximately $24 million from the Biomedical Advanced Research and Development Authority (BARDA), part of the Administration for Strategic Preparedness and Response (ASPR) within the U.S. Department of Health and Human Services (HHS), to supply CYFENDUS® (Anthrax Vaccine Adsorbed, Adjuvanted) for anthrax preparedness efforts. Anthrax remains a significant global biological threat due to its potential use in a bioterrorism event and its implications for public health and national security. “This newly executed CYFENDUS® contract modification with the U.S. government highlights the continued importance of maintaining readiness against anthrax threats,” said Paul Williams, senior vice president, head of products business, global government &amp; public affairs at Emergent. “Emergent remains committed to ensuring access to CYFENDUS® and strengthening preparedness through reliable domestic manufacturing and supply.” CYFENDUS® was approved by the U.S. Food and Drug Administration in July 2023 as a two-dose anthrax vaccine for post-exposure prophylaxis use in individuals 18 through 65 years of age when given with recommended antibacterial drugs. A recent NEJM Evidence study by Tillman et al. examines the use of the CYFENDUS® vaccine for post-exposure prophylaxis following anthrax exposures in Wyoming, further reinforcing the importance of maintaining preparedness capabilities and access to effective medical countermeasures against this high-consequence biological threat.1 This award builds on Emergent’s work with the U.S. government to support anthrax preparedness. Earlier this year, Emergent <a href="https://www.globenewswire.com/Tracker?data=GD2pwqlUgHqdR5qiXUBXlfroQ9utQ_gyLNQ-kh-OgKTP-gKNOML-WHyfUBOOiPcwGAjXBRmJsDau9PxRMqxEX7CtfzEdPE-_DR-Trdn5MzBscXNCatG_0y8NSi15lMYohX5TqC0CBw6sJc0kpm5BU1iMZp27wnCkYNzfRImG0Or9G9ORim8mMd3c0tR81Sm5b1_UzBTSgXSWZeXAWSKrLCAF7IVKkIUeO1AqSkh19D45k1EPMEYHVH5UQaJmkdFG" rel="nofollow" target="_blank" title="announced">announced</a> a delivery order valued at up to $21.5 million to supply BioThrax® (Anthrax Vaccine Adsorbed) to the U.S. Department of War. This project has been funded in whole or in part with federal funds from the U.S. Department of Health and Human Services, Administration for Strategic Preparedness and Response, Biomedical Advanced Research and Development Authority, under Contract No. HHSO100201600030C. About CYFENDUS® (Anthrax Vaccine Adsorbed, Adjuvanted) Indication CYFENDUS® (Anthrax Vaccine Absorbed, Adjuvanted) is a vaccine indicated for post-exposure prophylaxis of anthrax disease following suspected or confirmed exposure to Bacillus anthracis in persons 18 through 65 years of age when given with recommended antibacterial drugs. The efficacy of CYFENDUS® vaccine for post-exposure prophylaxis (PEP) is based solely on studies in animal models of inhalational anthrax. Important Safety Information Contraindication: Do not administer CYFENDUS® to individuals with a history of a severe allergic reaction (e.g., anaphylaxis) following a previous dose of CYFENDUS®, BioThrax® (a licensed anthrax vaccine with the same active ingredient as CYFENDUS®) or any component of the vaccine. Warnings and Precautions: Management of Acute Allergic Reactions: Appropriate medical treatment must be available to manage possible anaphylactic reactions following administration of CYFENDUS®. Pregnancy: CYFENDUS® can cause fetal harm when administered to a pregnant individual. In an observational study, there were more birth defects in infants born to individuals vaccinated with BioThrax® (a licensed anthrax vaccine with the same active ingredient as CYFENDUS®) in the first trimester compared to infants born to individuals vaccinated post pregnancy or individuals never vaccinated with BioThrax®. Adverse Reactions: The most common (≥10%) injection-site adverse reactions reported were tenderness, pain, arm motion limitation, warmth, induration, itching, swelling, and erythema/redness. The most common systemic adverse reactions were muscle aches, tiredness, and headache. To report Suspected Adverse Reactions, contact Emergent BioSolutions at 1-800-768-2304 or <a href="https://www.globenewswire.com/Tracker?data=EBdtNvs6HANVQz5_zx2kM_ZKAg0BxKUBtZ1a8WA8zwx701IC1Iw_wGD2VA59fDPtqY8j_6uVM9WE5upFS0YXt6abJC7xNetVc13hKMpYQG7OsgbaFWbv2oTr-sho1GOW" rel="nofollow" target="_blank" title="medicalinformation@ebsi.com">medicalinformation@ebsi.com</a>; or VAERS at 1-800-822-7967 or <a href="https://www.globenewswire.com/Tracker?data=d7jJNqgizC64NzGJkQ5f_u2zaBkOHPprABA9YXnweg_owhPGWLGiTD2SMvY001jeDo83bQZTa2uO3rZqBtqXKbsLBAL1GaA8PL2JSUDOfU4NoAj4a7Ynd7pYfYFPfdLLb5joeyNpVFY5f2PczZyXN1C8JSaFd0ZPGuXv5q5ipf1-mQz4XNdayo37OF6mOfrkZ69QEz1YUB_sFu6y7la12CmslqzQ2OZLzXrwrh6YDydNA9J5Mr72jkePh4mgUqWG_i9ASnyeDO3GAqs37X4rLg==" rel="nofollow" target="_blank" title="www.vaers.hhs.gov">www.vaers.hhs.gov</a>. Please see the <a href="https://www.globenewswire.com/Tracker?data=78DwCxwURv3JKagr8DAbOUbYsFOA-tLUNQj3zNht_BnHgaz7wmWvWhAxvfVVyfeYYSu_cIa_2V0NBAPsUndwBGboFJOcKUpyCz6Mm0zkl8i3Fl7CjudJH9ZBux8rra1ODtWnlHnHXKVlCscXx_s_K93l2FkUE5ujuS8nzduCaJiQkic1o35E9swg7CcQnvKZG6HPUZ-Wh1FSa9LtGGFt9OUyvDxab0pLq2TUcp6Z8Our4VQWenPOfb9fWoWN5N8LLfqzRfykuLEIEQDKT7yC94Fk498NCWHw6I9v7V1NbOsrIgLaHSMZ6gr_dehjzRCwjTnSFf9E3_xOf-NOE8iHnM5jHKXkehrql9uSAiklyqB9fA8TxoKvmfI7wVQ59QYQ-5dth7ybG3gTpYG_zOCWPnWGBcz2mTZ0vb69a9XCHCgQZnpxSEUvjPDWsz73mQDj" rel="nofollow" target="_blank" title="Prescribing Information">Prescribing Information</a> for CYFENDUS® for full safety information. About BioThrax® (Anthrax Vaccine Adsorbed)  BioThrax® vaccine is indicated for the active immunization for the prevention of disease caused by Bacillus anthracis in persons 18 through 65 years of age. BioThrax® is approved for (1) pre-exposure prophylaxis of disease in persons at high risk of exposure; and (2) post-exposure prophylaxis of disease following suspected or confirmed Bacillus anthracis exposure, when administered in conjunction with recommended antibacterial drugs. The efficacy of BioThrax® for post-exposure prophylaxis is based solely on studies in animal models of inhalational anthrax.  Select Important Safety Information  Contraindication: Severe allergic reaction (e.g., anaphylaxis) after a previous dose of BioThrax® or a component of the vaccine. Warnings and Precautions: Latex: The stopper of the vial contains natural rubber latex and may cause allergic reactions in latex sensitive individuals. Pregnancy: Avoid use in pregnancy unless the potential benefit outweighs the potential risk to the fetus. Adverse Reactions: The most common (&gt;10%) local (injection-site) adverse reactions observed in clinical studies were tenderness, pain, erythema, edema, and arm motion limitation. The most common (≥5%) systemic adverse reactions were muscle aches, fatigue, and headache.  Please see the full <a href="https://www.globenewswire.com/Tracker?data=78DwCxwURv3JKagr8DAbOUbYsFOA-tLUNQj3zNht_BkZcdqHQpiGcHnm2LNJE7E7z_TctXsxJZzKyV9fVOc6b8BX1aZgZwxvFxuxQije7je2jgirABDLWL43bOgM0P3o9m3_it25d5ZT1RdZPZ4TY5hYQvB8NFJLl01WcflWhbfHxohS1fvvsfth3bCmAafnsYaORTThIX6Wgb7VA4LRXFdeR1e7PQHYlnAFconNOqWKpyVFDwXXyciJ906-4lh-iD3GuTjcjskRK7_T0HnoBpjzrTRMj2PnU11Ch6yjpmUTQwwyh8q1VsyOi1JV9LM8WJTgJYs6TyPLHzQWQpwOLldMfE-2ifntp9WMS7D14CDF1mQbQxFPemZdew9cNGQzPNUZf_uQY2NeMjONenwYlB3o0J57lotd9xStYiawt8inXqc8RerXEty-ABVVfEAQ" rel="nofollow" target="_blank" title="Prescribing Information">Prescribing Information</a> for BioThrax® for additional safety information.  About Emergent BioSolutions  At Emergent, our mission is to protect and save lives. For over 25 years, we’ve been at work preparing those entrusted with protecting public health. We deliver protective and life-saving solutions for health threats like smallpox, mpox, botulism, Ebola, anthrax and opioid overdose emergencies. 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All statements, other than statements of historical fact, including statements regarding the expected timing for delivery of the CYFENDUS® vaccine and Emergent’s ability to increase inventories of CYFENDUS® vaccine to meet requested levels within specified time frames, are forward-looking statements. We generally identify forward-looking statements by using words like “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “forecast,” “goal,” “intend,” “may,” “plan,” “should,” “will,” “would,” and similar expressions or variations thereof, or the negative thereof, but these terms are not the exclusive means of identifying such statements. Forward-looking statements are based on our current intentions, beliefs, and expectations regarding future events based on information that is currently available. We cannot guarantee that any forward-looking statement will be accurate. Readers should realize that if underlying assumptions prove inaccurate or if known or unknown risks or uncertainties materialize, actual results could differ materially from our expectations. Readers are, therefore, cautioned not to place undue reliance on any forward-looking statement. Any forward-looking statement speaks only as of the date of this press release, and, except as required by law, we do not undertake to update any forward-looking statement to reflect new information, events, or circumstances. Readers should consider this cautionary statement, as well as the risk factors identified in our periodic reports filed with the U.S. Securities and Exchange Commission, when evaluating our forward-looking statements. Investor Contact: Richard S. Lindahl Executive Vice President, CFO <a href="https://www.globenewswire.com/Tracker?data=FqK52J2k6LsvfJYJelu7lpX9dQstX0_5SY4tmhDdgjz4vRemEUjoqWXx84bclwGq4PZGoEM1jqD-6QcGTJHxCdXvOMfhfm3xc9SBFRyBpsQ=" rel="nofollow" target="_blank" title="lindahlr@ebsi.com">lindahlr@ebsi.com</a> Media Contact: Assal Hellmer Vice President, Communications <a href="https://www.globenewswire.com/Tracker?data=U9CgjxfPj7yGwf9kyc3OgdYRU9K28ohfxL6thQyYmVnk6_9jaJKspsFuafXfTHP4HBnx5BinK5FHRNqrGDriGEGWTCJLc8fLyNMSL50el3V_Qx99ezd89RzRHLY9cEzm" rel="nofollow" target="_blank" title="mediarelations@ebsi.com">mediarelations@ebsi.com</a> 1Tillman, C., Waranius, B. N., Van Houten, C., &amp; Harrist, A. (2026). Cyfendus for Postexposure Prophylaxis after Inhalation Anthrax Exposures in Wyoming. NEJM Evidence, 5(7), EVIDpha2600122. doi.org. <img alt="" src='https://ml.globenewswire.com/media/ZjRiNmZjZGMtYjljYS00ZDMyLWIxMzktOWI4OWQwMWU0Y2VlLTEwMjI0MzktMjAyNi0wOS0wMS1lbg==/tiny/Emergent-Biosolutions-Inc-.png' referrerpolicy='no-referrer-when-downgrade' />

Emergent BioSolutions Awarded Contract Modification Valued at Approximately $24 Million for CYFENDUS® (Anthrax Vaccine Adsorbed, Adjuvanted)

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