Private company

AstraZeneca (United States)

Logo: MedImmune, Public domain, via Wikimedia Commons3

Biopharmaceutical company, acquired by AstraZeneca in 2007

MedImmune, LLC was a wholly owned subsidiary of AstraZeneca before February 14, 2019, when it was announced that the MedImmune name and branding would be discontinued in favor of AstraZeneca. MedImmune was founded in 1988 as Molecular Vaccines, Inc, and was purchased in 2007 for $15.6 billion. Its main offices were located in Gaithersburg, MD, Cambridge, UK, and Mountain View, CA.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1988Founded1

MedImmune, LLC was a wholly owned subsidiary of AstraZeneca before February 14, 2019, when it was announced that the MedImmune name and branding would be discontinued in favor of AstraZeneca.2

Corporate structure

AstraZeneca (United States) is part of a group headed by AstraZeneca. 63 entities, 22 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • AstraZeneca Cambridge, United Kingdom
    • AstraZeneca Oy 100% · Espoo, Finland
    • AstraZeneca (United States) Gaithersburg
    • ASTRAZENECA TREASURY LIMITED Cambridge, United Kingdom
      • AstraZeneca B.V. 100% · 's-Gravenhage, Netherlands
      • AstraZeneca AB Södertälje, Sweden
      • AstraZeneca Treasury B.V. Subsidiary · 100% · 's-Gravenhage, Netherlands
    • Archigen Biotech Subsidiary · 50% · Cambridge, United Kingdom
    • Acerta Pharma Subsidiary
    • Alexion Pharmaceuticals Subsidiary · New Haven, Connecticut, United States
    • Amylin Pharmaceuticals Subsidiary · San Diego
    • AstraZeneca (Portugal) Subsidiary · Barcarena, Portugal
    • AstraZeneca Canada Subsidiary · Mississauga, Canada
    • AstraZeneca Farmaceutica Spain S.A. Subsidiary · Madrid, Spain
    • AstraZeneca India Subsidiary · Bengaluru, India
    • AstraZeneca Pharma Poland Sp. z o.o. Subsidiary · Warsaw, Poland
    • Cambridge Antibody Technology Subsidiary
    • Circassia Pharmaceuticals Stake · 18.9% · Oxford
    • Entasis Therapeutics Stake · 16.29% · Waltham
    • PhaseBio Pharmaceuticals (United States) Stake · 10.44% · Malvern, United States
    • Moderna Stake · 7.65% · Cambridge, Massachusetts, United States
      • Moderna Australia Pty Ltd Subsidiary · Australia
      • Moderna Biopharma Canada Corporation Subsidiary · Canada
      • Moderna Biotech Distributor UK Ltd. Subsidiary · United Kingdom
      • Moderna Biotech Manufacturing UK Ltd. Subsidiary · United Kingdom
      • Moderna Biotech Securities, Inc. Subsidiary · Massachusetts, United States
      • Moderna Biotech Singapore Pte. Ltd. Subsidiary · Singapore
      • Moderna Biotech Spain, S.L.U. Subsidiary · Spain
      • Moderna Biotech UK Limited Subsidiary · United Kingdom
      • Moderna Charitable Foundation, Inc. Subsidiary · Delaware, United States
      • Moderna Clinical Supply Distributor, LLC Subsidiary · Delaware, United States
      • Moderna Enzymatics Co., Ltd. Subsidiary · Japan
      • Moderna France Subsidiary · France
      • Moderna Germany GmbH Subsidiary · Germany
      • Moderna Hong Kong Limited Subsidiary · Hong Kong
      • Moderna Italy S.r.l. Subsidiary · Italy
      • Moderna Japan Co., Ltd. Subsidiary · Japan
      • Moderna Korea Limited Subsidiary · South Korea
      • Moderna Manufacturing Australia Pty Ltd. Subsidiary · Australia
      • Moderna Manufacturing Canada Corp. Subsidiary · Canada
      • Moderna Netherlands B.V. Subsidiary · Netherlands
      • Moderna Norway AS Subsidiary · Norway
      • Moderna Norwood Real Estate LLC Subsidiary · Delaware, United States
      • Moderna Poland sp. z o.o. Subsidiary · Poland
      • Moderna Services, Inc. Subsidiary · Delaware, United States
      • Moderna Sweden AB Subsidiary · Sweden
      • and 4 more
    • AstraZeneca Continent B.V. Subsidiary
    • AstraZeneca Czech Republic s.r.o. Subsidiary · Czechia
    • ASTRAZENECA FINANCE AND HOLDINGS INC. Subsidiary · Wilmington, Delaware, United States
    • ASTRAZENECA FINANCE LLC Subsidiary · Wilmington, Delaware, United States
    • ASTRAZENECA INDIA PRIVATE LIMITED Subsidiary · Chennai, India
    • AstraZeneca Korea Subsidiary · South Korea
    • ASTRAZENECA PHARMA INDIA LIMITED Subsidiary · Bangalore, India
    • ASTRAZENECA UK LIMITED Subsidiary · Cambridge, United Kingdom
      • ASTRAZENECA EMPLOYEE SHARE TRUST LIMITED Subsidiary · Cambridge, United Kingdom
      • ASTRAZENECA SHARE TRUST LIMITED Subsidiary · Cambridge, United Kingdom
    • and 3 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

The story

Molecular Vaccines, Inc. was founded by Wayne T. Hockmeyer, David Mott, and Dr. James Young in 1988. In 1989, Molecular Vaccines, Inc changed its name to MedImmune, Inc.

On April 23, 2007, it was announced MedImmune and AstraZeneca entered into a definitive agreement under which AstraZeneca intended to acquire MedImmune in an all-cash transaction at US$ 58 per share, or about US$ 15.2 billion. On 19 June 2007 AstraZeneca completed the acquisition paying US$ 15.2 billion primarily for its drug development pipeline. Analysts have criticised the take-over, claiming that AstraZeneca paid too much. AstraZeneca chose to merge MedImmune with Cambridge Antibody Technology, which it had acquired in 2006, creating a new biologics division under the MedImmune name. AstraZeneca presented the new MedImmune to investors on 7 December 2007.

In June 2007, the National Institutes of Health (NIH) began enrolling participants in a Phase 1 H5N1 study of an intranasal influenza vaccine candidate based on MedImmune's live, attenuated vaccine technology.

MedImmune said it was making a significant, rapid response with a vaccine to the novel H1N1 variant of influenza, known as swine flu. In June 2009 it won a Department of Health and Human Services (HHS) contract, worth $90m. Under the contract with HHS, MedImmune will continue to make its seasonal FluMist vaccine and also develop a vaccine targeted specifically at the novel H1N1 virus. MedImmune then won a second contract to test its nasal spray flu technology as a viable treatment for the H1N1.

MedImmune received approval from the U.S. FDA for its intranasal novel H1N1 influenza vaccine in September 2009.

From Wikipedia’s article on MedImmune, shared under CC BY-SA 4.0.4

Products and brands

  • palivizumab

Listed on Wikidata.1

Subsidiaries and ownership

Parent company

From Wikidata.1

Timeline

  1. 2007Acquired Acquired by AstraZeneca1
  2. 1988Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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