# The 30 largest pharmaceutical companies in the Hauts-de-Seine department
Tamtam tracks 118 pharmaceutical companies headquartered in the Hauts-de-Seine department. This list ranks the 30 largest by number of employees on LinkedIn, led by Servier, Orano and Delpharm. Their median headcount is 509. Half of them were founded in 1990 or later. The most common headquarters are Boulogne-Billancourt (5), Puteaux (4) and Courbevoie (3).
The Hauts-de-Seine department hosts a significant cluster of pharmaceutical and medical technology companies. These firms range from large, established groups to mid-sized enterprises, with a strong focus on drug development, manufacturing, and related services. Companies like Servier develop pharmaceuticals across multiple therapeutic areas, while Delpharm operates as a contract development and manufacturing organization for various dosage forms. Stago specializes in in-vitro diagnostic systems for thrombosis and haemostasis, and UPSA produces self-medication products.
A notable pattern among these companies is the concentration of pharmaceutical manufacturing, research, and medical device development. Several firms, including Mayoly and Ethypharm, are involved in pharmaceutical production for specific health conditions. The presence of companies like Excelya and AIXIAL GROUP, which offer clinical research and development services, indicates a comprehensive ecosystem supporting the life sciences sector in this region.
馃嚝馃嚪 Hauts-de-Seine 路 30 companies 路 Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Servier](https://www.tamtam.ai/c/servier) (servier.com)
Develops pharmaceuticals focused on cardiology, venous diseases, oncology, neurology, and rare diseases, prioritizing patient needs and investing heavily in research. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Suresnes | 14,291 | 1954 |
| 2 | [Orano](https://www.tamtam.ai/c/orano) (orano.group)
International operator in nuclear materials, provides high-value products and services across the entire fuel cycle, addressing energy and health challenges through expertise and innovation. | Nuclear Electric Power Generation | 馃嚝馃嚪 Ch芒tillon | 12,605 | 2018 |
| 3 | [Delpharm](https://www.tamtam.ai/c/delpharm) (delpharm.com)
A leading Contract Development and Manufacturing Organization (CDMO) with 18 plants worldwide producing various dosage forms and serving demanding customers for 30 years | Pharmaceutical Manufacturing | 馃嚝馃嚪 Boulogne-Billancourt | 3,937 | |
| 4 | [Stago](https://www.tamtam.ai/c/stago) (stago.com)
Develops and manufactures advanced in-vitro diagnostic systems, reagents, and instruments for thrombosis and haemostasis exploration, serving healthcare laboratories worldwide. | Medical Equipment Manufacturing | 馃嚝馃嚪 Asni猫res-sur-Seine | 2,054 | 1945 |
| 5 | [UPSA](https://www.tamtam.ai/c/upsa) (upsa.com)
French pharmaceutical company manufacturing self-medication products and medical devices for daily ailments, emphasizing local roots and 'made in France' expertise. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Rueil-Malmaison | 1,686 | 1935 |
| 6 | [ProductLife Group](https://www.tamtam.ai/c/productlife-group) (productlifegroup.com)
Global service provider in Life Sciences, delivering end-to-end consulting and outsourcing services across the entire product lifecycle for various sectors. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Courbevoie | 1,469 | |
| 7 | [Mayoly](https://www.tamtam.ai/c/mayoly) (mayoly.com)
Family-owned, independent, French pharmaceutical and dermatological laboratory with international operations, focused on gastroenterology and dermocosmetics, aiming for consumer healthcare leadership. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Rueil-Malmaison | 1,218 | 1909 |
| 8 | [Ethypharm](https://www.tamtam.ai/c/ethypharm) (ethypharm.com)
Manufactures essential hospital drugs focusing on pain, addiction, and internal medicine with global presence and multiple production sites. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Saint-Cloud | 1,127 | 1977 |
| 9 | [MSD France](https://www.tamtam.ai/c/msd-france) (msd-france.com)
A leading biopharmaceutical company specializing in oncology, vaccines, and infectious diseases, focused on using the power of science to save and improve lives | Pharmaceutical Manufacturing | 馃嚝馃嚪 Puteaux | 1,051 | 1961 |
| 10 | [Thuasne](https://www.tamtam.ai/c/thuasne) (thuasne.com)
Imagines, develops, manufactures medical devices. Offers concrete, adapted, innovative health solutions in orthopedics, medical compression, and sport. | Medical Equipment Manufacturing | 馃嚝馃嚪 Levallois-Perret | 745 | 1847 |
| 11 | [Excelya](https://www.tamtam.ai/c/excelya) (excelya.com)
Provides comprehensive CRO, FSP, and Resourcing solutions to Biotech, Pharma, and Medical Device organizations, offering bespoke trial solutions across various therapeutic areas. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Boulogne-Billancourt | 701 | 2014 |
| 12 | [AIXIAL GROUP](https://www.tamtam.ai/c/aixial-group) (aixialgroup.com)
Specialized partner in clinical development, providing comprehensive trial design, execution, functional service delivery, resources, and expert consulting for efficient clinical trials. | Research Services | 馃嚝馃嚪 Boulogne-Billancourt | 616 | 2004 |
| 13 | [BIOGARAN](https://www.tamtam.ai/c/biogaran) (biogaran.fr)
The company specializes in providing quality generic medications for various health needs, focusing on patient well-being and rigorous development processes | Pharmaceutical Manufacturing | 馃嚝馃嚪 Colombes | 560 | 1996 |
| 14 | [Novartis France](https://www.tamtam.ai/c/novartis-france) (novartis.fr)
Develops innovative medicines to improve and extend lives. Serves patients, healthcare professionals, and society in confronting serious diseases. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Rueil-Malmaison | 531 | 1997 |
| 15 | [Fresenius Kabi France](https://www.tamtam.ai/c/fresenius-kabi-france) (fresenius-kabi.com)
Specializes in vital medicines and medical devices for infusion, transfusion, and clinical nutrition, including biosimilars and blood component treatment. | Pharmaceutical Manufacturing | 馃嚝馃嚪 S猫vres | 509 | |
| 16 | [MicroPort CRM](https://www.tamtam.ai/c/microport-crm) (microport.com)
Develops a comprehensive heart failure management platform, combining device therapies with monitoring technologies, covering diagnosis, treatment, and long-term care globally. | Medical Equipment Manufacturing | 馃嚝馃嚪 Clamart | 497 | |
| 17 | [Chiesi France](https://www.tamtam.ai/c/chiesi-france) (chiesi.fr)
A family-owned Italian biopharmaceutical group offering innovative therapeutic solutions in respiratory, rare diseases, and transplantation, focusing on patient well-being and sustainability | Pharmaceutical Manufacturing | 馃嚝馃嚪 Bois-Colombes | 392 | 1992 |
| 18 | [Solabia Group](https://www.tamtam.ai/c/solabia-group) (solabia.com)
Develops and supplies active principles and ingredients for cosmetics, pharmaceuticals, and food industries, focusing on biotechnology, enzymatic synthesis, and plant extraction. | Biotechnology Research | 馃嚝馃嚪 Courbevoie | 368 | 1972 |
| 19 | [ELITechGroup - A Bruker Company](https://www.tamtam.ai/c/elitechgroup-a-bruker-company) (elitechgroup.com)
The company's LinkedIn page is no longer active or updated. It has been archived due to its integration with Bruker. | Medical Equipment Manufacturing | 馃嚝馃嚪 Puteaux | 361 | |
| 20 | [Recordati Rare Diseases](https://www.tamtam.ai/c/recordati-rare-diseases) (recordatirarediseases.com)
Specializes in developing and providing treatments specifically for patients affected by rare diseases, prioritizing patient care and support. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Puteaux | 357 | 1990 |
| 21 | [REPSCO, an IQVIA business](https://www.tamtam.ai/c/repsco-an-iqvia-business) (repsco.fr)
Specialized pharmaceutical promotion and recruitment services in France, enhancing market share, adapting to industry changes, and leveraging digital innovation. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Saint-Cloud | 306 | 2000 |
| 22 | [Air Liquide Medical Systems](https://www.tamtam.ai/c/air-liquide-medical-systems) (airliquide.com)
Development and manufacturing of ventilators, patient interfaces, medical gas equipment, and aerosol therapy devices for healthcare applications. | Medical Equipment Manufacturing | 馃嚝馃嚪 Antony | 293 | |
| 23 | [Peters Surgical](https://www.tamtam.ai/c/peters-surgical) (admedsol.com)
French manufacturer and distributor of surgical medical devices including sutures, titanium clips, clamps, and surgical glues, operating globally with manufacturing facilities and direct sales. | Medical Equipment Manufacturing | 馃嚝馃嚪 Boulogne-Billancourt | 263 | 1926 |
| 24 | [DBV Technologies](https://www.tamtam.ai/c/dbv-technologies) (dbv-technologies.com)
Develops a skin patch (Viaskin) for treating food allergies and other immune diseases, aiming to re-educate the immune system through the skin. Pioneering epicutaneous immunotherapy. | Biotechnology Research | 馃嚝馃嚪 Chatillon | 231 | |
| 25 | [Galien](https://www.tamtam.ai/c/galien) (galien.com)
Offers integrated CDMO services for pharmaceuticals, including manufacturing, specialized dosage forms, formulation development, quality controls, packaging, and warehousing in a GMP environment. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Levallois-Perret | 221 | 1993 |
| 26 | [Keyrus Life Science](https://www.tamtam.ai/c/keyrus-life-science) (keyruslifescience.com)
Optimizes clinical trials, real-world evidence projects, and clinical R&D for pharmaceutical, biotech, and medtech industries, leveraging data and digital solutions. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Boulogne-Billancourt | 220 | 1998 |
| 27 | [Sandoz France](https://www.tamtam.ai/c/sandoz-france) (sandoz.fr)
A global leader in generic and biosimilar medicines, pioneering universal patient access and healthcare innovation while addressing global health challenges | Pharmaceutical Manufacturing | 馃嚝馃嚪 Levallois-Perret | 218 | 1886 |
| 28 | [EFFIK](https://www.tamtam.ai/c/effik) (effik.fr)
A French pharmaceutical laboratory specializing in women's health, offering gynecological solutions, innovative products, and expanding into neurology with a strong presence in Europe | Pharmaceutical Manufacturing | 馃嚝馃嚪 Meudon | 216 | 1992 |
| 29 | [RECORDATI France](https://www.tamtam.ai/c/recordati-france) (recordati.com)
Company based in Puteaux, France, operating in the pharmaceuticals industry, located at 70, Avenue du G茅n茅ral de Gaulle, in the 脦le-de-France region. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Puteaux | 211 | |
| 30 | [LEO Pharma France](https://www.tamtam.ai/c/leo-pharma-france) (leo-pharma.fr)
Helps patients achieve healthy skin by offering therapeutic solutions for managing skin problems globally, with a focus on skin disease medications and solutions. | Pharmaceutical Manufacturing | 馃嚝馃嚪 Courbevoie | 209 | |
## How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
## More company lists in the Hauts-de-Seine department
- [The largest companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/largest-companies-hauts-de-seine) (5,160)
- [Multinational companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/multinational-companies-hauts-de-seine) (1,231)
- [IT services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/it-services-companies-hauts-de-seine) (737)
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- [Consulting firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/consulting-firms-hauts-de-seine) (563)
- [Companies with in-house R&D in the Hauts-de-Seine department](https://www.tamtam.ai/l/r-and-d-companies-hauts-de-seine) (510)
- [SaaS companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/saas-companies-hauts-de-seine) (389)
- [Business Consulting and Services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/business-consulting-and-services-companies-hauts-de-seine) (304)
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- [Retail chains in the Hauts-de-Seine department](https://www.tamtam.ai/l/retail-chains-hauts-de-seine) (292)
- [Manufacturers in the Hauts-de-Seine department](https://www.tamtam.ai/l/manufacturers-hauts-de-seine) (285)
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- [Subscription businesses in the Hauts-de-Seine department](https://www.tamtam.ai/l/subscription-businesses-hauts-de-seine) (228)
- [Hardware manufacturers in the Hauts-de-Seine department](https://www.tamtam.ai/l/hardware-companies-hauts-de-seine) (199)
- [Financial services firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/financial-services-firms-hauts-de-seine) (198)
- [Companies with a mobile app in the Hauts-de-Seine department](https://www.tamtam.ai/l/companies-with-mobile-app-hauts-de-seine) (189)
- [Critical infrastructure operators in the Hauts-de-Seine department](https://www.tamtam.ai/l/critical-infrastructure-operators-hauts-de-seine) (169)
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- [Distributors and wholesalers in the Hauts-de-Seine department](https://www.tamtam.ai/l/distributors-and-wholesalers-hauts-de-seine) (154)
- [Recruitment and staffing agencies in the Hauts-de-Seine department](https://www.tamtam.ai/l/recruitment-agencies-hauts-de-seine) (152)
## The same list elsewhere in France
- [Pharmaceutical companies in France](https://www.tamtam.ai/l/pharmaceutical-companies-france) (1,437)
- [Pharmaceutical companies in 脦le-de-France](https://www.tamtam.ai/l/pharmaceutical-companies-ile-de-france) (523)
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- [Pharmaceutical companies in Provence-Alpes-C么te d'Azur](https://www.tamtam.ai/l/pharmaceutical-companies-provence-alpes-cote-dazur) (104)
- [Pharmaceutical companies in Occitanie](https://www.tamtam.ai/l/pharmaceutical-companies-occitanie) (101)
- [Pharmaceutical companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/pharmaceutical-companies-nouvelle-aquitaine) (72)
- [Pharmaceutical companies in the Bouches-du-Rh么ne department](https://www.tamtam.ai/l/pharmaceutical-companies-bouches-du-rhone) (56)
- [Pharmaceutical companies in Hauts-de-France](https://www.tamtam.ai/l/pharmaceutical-companies-hauts-de-france) (53)
- [Pharmaceutical companies in Pays de la Loire](https://www.tamtam.ai/l/pharmaceutical-companies-pays-de-la-loire) (48)
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- [Pharmaceutical companies in the Essonne department](https://www.tamtam.ai/l/pharmaceutical-companies-essonne) (45)
- [Pharmaceutical companies in the H茅rault department](https://www.tamtam.ai/l/pharmaceutical-companies-herault) (44)
- [Pharmaceutical companies in the Val-de-Marne department](https://www.tamtam.ai/l/pharmaceutical-companies-val-de-marne) (43)
- [Pharmaceutical companies in Bourgogne-Franche-Comt茅](https://www.tamtam.ai/l/pharmaceutical-companies-bourgogne-franche-comte) (37)
- [Pharmaceutical companies in Brittany](https://www.tamtam.ai/l/pharmaceutical-companies-brittany) (37)
- [Pharmaceutical companies in Centre-Val de Loire](https://www.tamtam.ai/l/pharmaceutical-companies-centre-val-de-loire) (37)
- [Pharmaceutical companies in the Bas-Rhin department](https://www.tamtam.ai/l/pharmaceutical-companies-bas-rhin) (36)
- [Pharmaceutical companies in the Gironde department](https://www.tamtam.ai/l/pharmaceutical-companies-gironde) (35)
- [Pharmaceutical companies in the Haute-Garonne department](https://www.tamtam.ai/l/pharmaceutical-companies-haute-garonne) (35)
- [Pharmaceutical companies in the Alpes-Maritimes department](https://www.tamtam.ai/l/pharmaceutical-companies-alpes-maritimes) (34)
- [Pharmaceutical companies in Paris](https://www.tamtam.ai/l/pharmaceutical-companies-paris) (229)
- [Pharmaceutical companies in Lyon](https://www.tamtam.ai/l/pharmaceutical-companies-lyon) (68)
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Source: https://www.tamtam.ai/l/pharmaceutical-companies-hauts-de-seine