Swedish Orphan Biovitrum AB (publ)?(Sobi?) (STO:SOBI)?has entered into an agreement to sell a US Food and Drug Administration (FDA) Priority Review Voucher (PRV) to AstraZeneca for a total cash consideration of USD 95 M. A PRV entitles the holder to FDA priority review of a single New Drug Application or Biologics License Application, which reduces the target review time and may potentially lead to an expedited approval. The PRV was acquired as part of the acquisition of the emapalumab related business from Novimmune in July 2019. The transaction is subject to customary regulatory approval. About Sobi At Sobi, we are transforming the lives of people affected by rare diseases. As a specialised international biopharmaceutical company, we provide sustainable access to innovative therapies in the areas of haematology, immunology and specialty care. We bring something rare to rare diseases ? a belief in the strength of focus, the power of agility and the potential of the people we are dedicated to serving. The hard work and dedication of our approximately 1,050 employees around the globe has been instrumental in our success across Europe, North America, the Middle East, Russia and North Africa, leading to total revenues of SEK 9.1 billion in 2018. Sobi?s share (STO:SOBI) is listed on Nasdaq Stockholm. You can find more information about Sobi at?www.sobi.com. For more information please contact

Paula Treutiger, Head of Communication & Investor Relations

+ 46 733?666 599

paula.treutiger@sobi.com

Linda Holmstr?m, Corporate Communication & Investor Relations

+ 46 708?734 095

linda.holmstrom@sobi.com