ALXN on NASDAQ

Alexion Pharmaceuticals

Logo: Unknown author Unknown author, Public domain, via Wikimedia Commons4

American healthcare company

Alexion Pharmaceuticals, Inc., a subsidiary of AstraZeneca, is a pharmaceutical company headquartered in New Haven, Connecticut, specializing in orphan drugs for rare diseases. Its products include eculizumab (Soliris) and ravulizumab (Ultomiris), both used to treat the rare disorders of atypical hemolytic uremic syndrome (aHUS) and paroxysmal nocturnal hemoglobinuria (PNH); asfotase alfa (Strensiq), used to treat hypophosphatasia; sebelipase alfa (Kanuma), used to treat lysosomal acid lipase deficiency, and andexanet alfa (Andexxa), used to stop life threatening or uncontrollable bleeding in3 From Wikipedia, CC BY-SA 4.0

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Last updated Oct 16, 2026.

Overview

1992Founded1

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  • TickerALXN on NASDAQ1
  • Industrypharmaceutical industry1
  • HeadquartersCheshire1
  • Founded inBoston1
  • Websitealexion.com
  • Legal formDelaware corporation1
  • Incorporated inDE5
  • Business address121 Seaport Boulevard, Boston, Ma 022105
  • Filer categoryLarge accelerated filer5
Alexion Pharmaceuticals (54106261348)
Photo: ajay_suresh, CC BY 2.0, via Wikimedia Commons6

Alexion Pharmaceuticals, Inc., a subsidiary of AstraZeneca, is a pharmaceutical company headquartered in New Haven, Connecticut, specializing in orphan drugs for rare diseases.3

How it started

History

Alexion Pharmaceuticals was founded in 1992 at Science Park in New Haven, Connecticut by Steven Squinto and Leonard Bell, a physician at Yale New Haven Hospital and assistant professor of medicine and pathology at Yale School of Medicine.

In 2000, Alexion moved its headquarters from New Haven to Cheshire, Connecticut.

Alexion received U.S. Food and Drug Administration (FDA) approval for Soliris in 2007. It was initially approved to treat paroxysmal nocturnal hemoglobinuria, a rare blood disorder.

In June 2010, there was an outbreak of hemolytic–uremic syndrome caused by shigatoxigenic and verotoxigenic Escherichia coli (EHEC) in Germany. Soliris was tested as a treatment option because of its effectiveness in treating atypical hemolytic uremic syndrome, an illness similar to that caused by the EHEC infection.

In January 2014, the company paid Moderna $100 million for ten product options to develop rare disease treatments, including for Crigler–Najjar syndrome, using Moderna's mRNA therapeutics platform; however, the program was scrapped in January 2017 after animal trials showed that Moderna's treatment would never be safe enough for humans.

From Wikipedia’s article on Alexion Pharmaceuticals, shared under CC BY-SA 4.0.3

Products and brands

  • Kanuma
  • Soliris
  • Strensiq
  • ravulizumab

Listed on Wikidata.1

Subsidiaries and ownership

Parent company

Subsidiaries

  • Alexion Pharma (Switzerland)

From Wikidata.1

Employees over time

Alexion Pharmaceuticals employees by year13.8K in 2020+44% since 2018
01.0K2.0K3.0K4.0K2018: 2.7K2.7K20182019: 3.1K3.1K2019+16%2020: 3.8K3.8K2020+24%
  • 20203,8371
  • 20193,0821
  • 20182,6561

Revenue over time

As stated on Wikidata, in the currency reported.

Revenue

Alexion Pharmaceuticals revenue by year1$6.1B in 2021+98% since 2016
0$2.0B$4.0B$6.0B$8.0B2016: $3.1B$3.1B20162017: $3.6B$3.6B2017+15%2018: $4.1B$4.1B2018+16%2019: $5.0B$5.0B2019+21%2020: $6.1B$6.1B2020+22%2021: $6.1B$6.1B2021+0%
  • 2021$6.1B1
  • 2020$6.1B1
  • 2019$5.0B1
  • 2018$4.1B1
  • 2017$3.6B1
  • 2016$3.1B1

Net income

Alexion Pharmaceuticals net income by year1$603.4M in 2020+51% since 2016
0$1.0B$2.0B$3.0B2016: $399.4M$399.4M20162017: $443.3M$443.3M2017+11%2018: $77.6M$77.6M2018−82%2019: $2.4B$2.4B2019+2998%2020: $603.4M$603.4M2020−75%
  • 2020$603.4M1
  • 2019$2.4B1
  • 2018$77.6M1
  • 2017$443.3M1
  • 2016$399.4M1

Former names

  • ALEXION PHARMACEUTICALS INCOct 29, 1996 to Jun 29, 20185

Timeline

  1. Jul 21, 2021Acquired Acquired by AstraZeneca1
  2. 1996Went public Listed on NASDAQ1
  3. 1992Founded Founded in Boston1