Private company

sanofi-aventis

Logo: sanofi.cz³

Sanofi-aventis is a Czech health care company based in Prague, founded in 1991, part of Sanofi.¹ It employed 267 people in 2021.¹

Last updated Oct 21, 2026.

Overview

Dec 13, 1991Founded¹

Industryhealth care industry¹
HeadquartersPrague, Czech Republic¹
Websitewww.sanofi.cz/l/cz/cs/index.jsp
Legal formspolečnost s ručením omezeným¹
LEI5493002C7RUCVR5AS812²
StatusActive²
LEI statusLapsed (not renewed)²
Registered addressEVROPSKÁ 846/176A, PRAHA 6 - VOKOVICE, 16000 Prague, Czechia²
Registered withMinistry of Finance, 44848200²

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Corporate structure

sanofi-aventis is part of a group headed by Sanofi. 125 entities, 30 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Sanofi Paris, France
- Hoechst 100% · Frankfurt am Main, Germany
  - Chemische Fabrik Kalle Subsidiary · Wiesbaden, Germany
  - Chemische Werke Albert Subsidiary · Wiesbaden, Germany
  - Kelheim Fibres Subsidiary · Kelheim, Germany
  - Ruhrchemie Aktiengesellschaft Subsidiary
    - Ruhrbenzin Subsidiary · Germany
  - Thermphos International Subsidiary · Vlissingen
    - Wagemakers Subsidiary · Breda, Netherlands
  - Aktien-Gesellschaft für Stickstoffdünger Subsidiary · Germany
  - Hoechst Vlissingen NV Subsidiary
- sanofi-aventis 100% · Prague, Czechia
- Ablynx Ghent, Belgium
- Sanofi (Belgium) Machelen, Belgium
- Chattem Subsidiary · 100% · Chattanooga
- Genzyme Subsidiary · 100% · Cambridge, Massachusetts, United States
  - GENZYME THERAPEUTIC PRODUCTS LIMITED PARTNERSHIP Subsidiary · Boston, Massachusetts, United States
- Sanofi-Aventis Korea Subsidiary · 100% · Seoul, South Korea
- Shantha Biotechnics Subsidiary · 98.7% · Medchal
- Bioverativ Subsidiary · Waltham
- Sanofi (Japan) Subsidiary · Tokyo, Japan
- Sanofi Medley Subsidiary · Campinas, Brazil
- Winthrop Subsidiary · United Kingdom
- Zentiva Subsidiary · Praha 10, Czechia
- Infraserv Höchst Stake · 31.2% · Frankfurt am Main, Germany
- Regeneron Pharmaceuticals Stake · 22.2% · Tarrytown, New York, United States
  - Checkmate Pharmaceuticals, Inc. Subsidiary · Delaware, United States
  - Decibel Therapeutics, Inc. Subsidiary · Delaware, United States
  - Eastside Campus Holdings LLC Subsidiary · New York, United States
  - Loop Road Holdings LLC Subsidiary · New York, United States
  - Old Saw Mill Holdings LLC Subsidiary · New York, United States
  - Oxular Acquisitions Limited Subsidiary · United Kingdom
  - Oxular Inc. Subsidiary · Delaware, United States
  - Regeneron Assurance, Inc. Subsidiary · New York, United States
  - Regeneron Austria GmbH Subsidiary · Austria
  - Regeneron Belgium SRL Subsidiary · Belgium
  - Regeneron Canada Company Subsidiary · Canada
  - Regeneron Clinical Genomics Laboratory LLC Subsidiary · Delaware, United States
  - Regeneron France SAS Subsidiary · France
  - Regeneron Genetics Center LLC Subsidiary · Delaware, United States
  - Regeneron GmbH Subsidiary · Germany
  - Regeneron Healthcare Solutions, Inc. Subsidiary · New York, United States
  - Regeneron India Private Limited Subsidiary · India
  - Regeneron International Holdings LLC Subsidiary · Delaware, United States
  - REGENERON IRELAND DESIGNATED ACTIVITY COMPANY Subsidiary · Dublin, Ireland
  - Regeneron Italy S.r.l. Subsidiary · Italy
  - Regeneron Japan KK Subsidiary · Japan
  - Regeneron NL B.V. Subsidiary · Netherlands
  - Regeneron Spain, S.L.U. Subsidiary · Spain
  - Regeneron Switzerland GmbH Subsidiary · Switzerland
  - Regeneron UK Limited Subsidiary · United Kingdom
  - and 4 more
- SANOFI PASTEUR SA DE CV Subsidiary · 100% · Mexico City, Mexico
- AZTECA VACUNAS SA DE CV Subsidiary · Mexico City, Mexico
- Carraig Insurance Designated Activity Company Subsidiary · Dublin, Ireland
- CHINOIN GYÓGYSZER-ÉS VEGYÉSZETI TERMÉKEK GYÁRA ZÁRTKÖRŰEN MŰKÖDŐ RT. Subsidiary · Budapest, Hungary
  - SANOFI-AVENTIS MAGYARORSZÁG KERESKEDELMI ÉS SZOLGÁLTATÓ ZÁRTKÖRŰEN MŰKÖDŐ RÉSZVÉNYTÁRSASÁG Subsidiary · Budapest, Hungary
- GENZYME FLANDERS Subsidiary · Geel, Belgium
- Genzyme Global S.a r.l. (Genzyme Global S.à r.l.) Subsidiary · Baar, Switzerland
- HELVEPHARM AG Subsidiary · Vernier, Switzerland
- Life Science Holdings Inc. Subsidiary · Swiftwater, Pennsylvania, United States
- Nattermann Verwaltungs GmbH Subsidiary · Frankfurt am Main, Germany
- Opella Subsidiary · France
- and 40 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.

Subsidiaries and ownership

Parent company

Sanofi

From Wikidata.¹

Employees over time

2021267¹
2020289¹

Timeline

Dec 13, 1991Founded Founded¹

Sources

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

1
Wikidatasanofi-aventis on Wikidata
2
GLEIFsanofi-aventis LEI record (5493002C7RUCVR5AS812)
3
Company websitesanofi-aventis logo