Our mission is to transform the lives of people living with rare diseases and devastating conditions through the development and delivery of innovative medicines, as well as through supportive technologies and healthcare services. 

By continuing to deepen our understanding of rare disease, which began with our pioneering work in complement biology, we are able to innovate and evolve into new areas where there is great unmet need and opportunity to help patients and families fully live their best lives. 

Our culture is rooted in integrity, inclusiveness, and our dedication to joining and supporting the communities in which we live and work. We invest in and value people who believe in the importance of our purpose and understand what it takes to deliver on it. Alexion has over 3,000 talented colleagues dedicated to serving people living with rare diseases in more than 50 countries around the world. Our global headquarters are based in Boston, Massachusetts and our EMEA headquarters are in Zürich, Switzerland. We also have a Research Center of Excellence in New Haven, Connecticut, global supply chain and operations headquarters in Ireland, as well as local and regional operations in countries around the world. 

At Alexion, our passion drives us to continuously innovate and create meaningful value in all we do. In doing so, we change lives for the better – ours, people living with rare diseases, and the communities we serve.

Alexion Pharmaceuticals