# 30 leading multinational companies in the Seine-Maritime department

Tamtam tracks 89 multinational companies headquartered in the Seine-Maritime department. This list ranks the 30 largest by number of employees on LinkedIn, led by Sidel, Université de Rouen and EM Normandie Business School. Their median headcount is 341. Half of them were founded in 1983 or later. The most common headquarters are Le Havre (9), Rouen (5) and Saint-Étienne-du-Rouvray (3).

This selection of multinational companies in Seine-Maritime includes a mix of large groups and mid-sized firms, predominantly in manufacturing, logistics, and higher education. Sidel provides packaging equipment and services, while FOURE LAGADEC specializes in boiler production and industrial maintenance. SEAFRIGO is a global food logistics specialist, and SPB Group designs insurance and assistance for daily products and services. The Université de Rouen and EM Normandie Business School are prominent higher education institutions.

A notable pattern is the concentration of headquarters in Le Havre, which hosts companies like FOURE LAGADEC, LASSARAT, SEAFRIGO, SPB Group, and Helvetia Insurance France. This suggests Le Havre is a significant economic hub within the department, particularly for industrial services, logistics, and insurance sectors. Several companies also have long histories, with founding dates stretching back to the early 20th century.

🇫🇷 Seine-Maritime · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Sidel](https://www.tamtam.ai/c/sidel) (sidel.com)<br>Provides equipment, services for packaging beverages, food, home and personal care products in various materials, focusing on customer needs and performance. | Machinery Manufacturing | 🇫🇷 Octeville-sur-Mer | 6,370 | 1965 |
| 2 | [Université de Rouen](https://www.tamtam.ai/c/universite-de-rouen) (univ-rouen.fr)<br>Offers education in law, economics, management, humanities, health, sports, sciences, and technology disciplines. | Higher Education | 🇫🇷 Mont-Saint-Aignan | 3,200 | 1966 |
| 3 | [EM Normandie Business School](https://www.tamtam.ai/c/em-normandie-business-school) (em-normandie.com)<br>Established in 1871, this institution is a leading French business school accredited by AMBA, AACSB, and EQUIS It offers management education to students and professionals worldwide | Higher Education | 🇫🇷 Le Havre | 1,196 | 1871 |
| 4 | [FOURE LAGADEC](https://www.tamtam.ai/c/foure-lagadec) (fourelagadec.com)<br>FOURE LAGADEC offers complete service solutions for industries, specializing in boiler production and industrial maintenance with a focus on quality, safety, and the environment | Manufacturing | 🇫🇷 Le Havre | 1,003 | 1922 |
| 5 | [LASSARAT](https://www.tamtam.ai/c/lassarat) (lassarat.com)<br>A long-standing group specializing in surface treatment and industrial coatings, focused on innovation and customer satisfaction in various sectors worldwide | Oil and Gas | 🇫🇷 Le Havre | 888 | 1946 |
| 6 | [SEAFRIGO](https://www.tamtam.ai/c/seafrigo) (seafrigo.com)<br>Global food logistics specialist, managing temperature-controlled supply chains for food, wine, spirits, frozen, fresh products, and general cargo. | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Le Havre | 856 | 1976 |
| 7 | [SPB Group](https://www.tamtam.ai/c/spb-group) (spb.eu)<br>SPB Group designs and manages insurance and assistance offers for daily products and services, specializing in electronic device repair and recycling | Insurance | 🇫🇷 Le Havre | 727 | 1965 |
| 8 | [Groupe LHOTELLIER](https://www.tamtam.ai/c/groupe-lhotellier) (lhotellier.fr)<br>A century-old independent family group specializing in construction, public works, and environmental services, with a strong focus on local development and sustainability | Construction | 🇫🇷 Blangy-sur-Bresle | 608 | 1919 |
| 9 | [Helvetia Insurance France](https://www.tamtam.ai/c/helvetia-insurance-france) (helvetia.com)<br>Specializes in enterprise risk, marine, and transport insurance for various sectors including construction, automotive fleets, art, and international programs. | Insurance | 🇫🇷 Le Havre | 588 | 1921 |
| 10 | [INSA Rouen Normandie](https://www.tamtam.ai/c/insa-rouen-normandie) (insa-rouen.fr)<br>Leading engineering institution providing 9 engineering programs, conducting research across 9 laboratories, and promoting scientific culture, focusing on risk management. | Higher Education | 🇫🇷 Saint-Étienne-du-Rouvray | 511 |  |
| 11 | [Novacel](https://www.tamtam.ai/c/novacel) (novacel-solutions.com)<br>Provides technical films, tapes, papers, and machines to protect and preserve material surfaces across various industrial market segments. | International Trade and Development | 🇫🇷 Déville-lès-Rouen | 390 |  |
| 12 | [UbiPharm Group](https://www.tamtam.ai/c/ubipharm-group) (ubipharm.com)<br>UbiPharm enhances access to healthcare solutions in over 15 African countries by integrating key supply chain services with innovative distribution strategies | Wholesale | 🇫🇷 Le Grand-Quevilly | 386 | 1991 |
| 13 | [Aspen Notre-Dame-de-Bondeville](https://www.tamtam.ai/c/aspen-notre-dame-de-bondeville) (aspenndb.com)<br>Manufacturing sterile pharmaceutical products, including antithrombotics and injectable anesthetics, from active ingredient to finished product, with global distribution and ethical practices. | Pharmaceutical Manufacturing | 🇫🇷 Notre-Dame-de-Bondeville | 377 |  |
| 14 | [PGS GROUP](https://www.tamtam.ai/c/pgs-group) (pgsgroup.com)<br>Development and supply of customized wooden packaging solutions, including pallets and eco-friendly services, focused on cost-saving and sustainability. | Packaging and Containers Manufacturing | 🇫🇷 Saint-Étienne-du-Rouvray | 354 | 1993 |
| 15 | [ESIGELEC : ÉCOLE D'INGÉNIEURS-ES GÉNÉRALISTES](https://www.tamtam.ai/c/esigelec-ecole-d-ingenieurs-es-generalistes) (esigelec.fr)<br>Specializing in general engineering education, the company offers various programs in Intelligent and Connected Systems, emphasizing project-based learning, internships, entrepreneurship, and innovation for over 10,000 graduates | Higher Education | 🇫🇷 Saint-Étienne-du-Rouvray | 341 |  |
| 16 | [Mon Véto](https://www.tamtam.ai/c/mon-veto) (veterinaire-monveto.com)<br>Established in 2010 by veterinarians, this network of general veterinary clinics has expanded across various regions in France, boasting over 250 clinics and nearly 1900 veterinary professionals | Veterinary Services | 🇫🇷 Rouen | 335 | 2010 |
| 17 | [Groupe SOGESTRAN](https://www.tamtam.ai/c/groupe-sogestran) (sogestran.com)<br>Inland waterway and maritime shipowner offering environmentally friendly transport for oil, chemicals, dry bulk, general goods, with focus on quality and safety | Maritime Transportation | 🇫🇷 Le Havre | 303 | 1948 |
| 18 | [LVO Group](https://www.tamtam.ai/c/lvo-group) (lv-overseas.fr)<br>Global logistics provider with presence in France, French overseas territories, Asia, Africa, Middle East, and US, offering flexible transport solutions worldwide | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Épouville | 281 | 1932 |
| 19 | [GROUPE SEALOGIS](https://www.tamtam.ai/c/groupe-sealogis) (geodis.com)<br>Provides tailored maritime, inland, and air transport solutions with extensive European coverage and dedicated teams ensuring secure door-to-door delivery. | Maritime Transportation | 🇫🇷 Le Havre | 247 | 2002 |
| 20 | [Groupe Nutriset](https://www.tamtam.ai/c/groupe-nutriset) (groupenutriset.fr)<br>Research, production, and distribution of nutritional products to treat and prevent malnutrition among vulnerable populations worldwide. | Food and Beverage Manufacturing | 🇫🇷 Malaunay | 246 | 1986 |
| 21 | [Réseau Alliance France](https://www.tamtam.ai/c/reseau-alliance-france) (recrutement.reseaualliance.fr)<br>The Alliance Network is a global HR solutions provider, supporting individuals throughout their careers by establishing trust with international companies in various industries | Staffing and Recruiting | 🇫🇷 Belbeuf | 238 | 2000 |
| 22 | [Voxens](https://www.tamtam.ai/c/voxens) (voxens.fr)<br>Manages multichannel call center operations for telephone marketing, focusing on customer acquisition, loyalty, retention, and reactivation for both B2B and B2C clients. | Outsourcing and Offshoring Consulting | 🇫🇷 Rouen | 227 | 2009 |
| 23 | [Nexira](https://www.tamtam.ai/c/nexira) (nexira.com)<br>Family-owned company, world leader acacia gum, global leader natural ingredients, botanical extracts, food, nutrition, dietary supplements, clean label. | Food and Beverage Manufacturing | 🇫🇷 Rouen | 200 | 1895 |
| 24 | [Abysse Corp Group](https://www.tamtam.ai/c/abysse-corp-group) (abyssecorp.com)<br>Design, manufacture, and distribute licensed pop culture merchandise including manga, cinema, video games, with global offices and multiple product lines. | Wholesale | 🇫🇷 Grand Couronne | 192 | 2003 |
| 25 | [SOCAPS](https://www.tamtam.ai/c/socaps) (socaps.coop)<br>Global leader in technical assistance and consulting services for various industries worldwide, focusing on skills development, ecological transition, and societal innovations | Engineering Services | 🇫🇷 Rouen | 189 | 1999 |
| 26 | [Segafredo Zanetti France S.A.S.](https://www.tamtam.ai/c/segafredo-zanetti-france-s-a-s) (segafredo.fr)<br>Specializes in coffee roasting, packaging, and marketing, focusing on product quality, customer satisfaction, innovation, and corporate social responsibility. | Food and Beverage Manufacturing | 🇫🇷 Sotteville-lès-Rouen | 180 | 1991 |
| 27 | [SOGET](https://www.tamtam.ai/c/soget) (soget.fr)<br>A global leader in Port Community Systems, offering e-Customs solutions, Warehouse Management, and container tracking services to streamline port operations worldwide | IT Services and IT Consulting | 🇫🇷 Le Havre | 171 | 1983 |
| 28 | [XP LOG](https://www.tamtam.ai/c/xp-log) (xplog.fr)<br>Customized logistics services including storage, transport, order preparation, and distribution across major European ports for efficient supply chain management. | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Saint-Vigor-d'Ymonville | 165 | 1999 |
| 29 | [DYKA France](https://www.tamtam.ai/c/dyka-france) (dyka.fr)<br>Designs, manufactures, and sells PVC, PP, and PE solutions for various sectors, providing quality products, professional advice, and valuable services | Plastics Manufacturing | 🇫🇷 Sainte-Austreberthe | 164 | 1962 |
| 30 | [PAUL MARIUS](https://www.tamtam.ai/c/paul-marius) (paulmarius.fr)<br>The company specializes in creating handmade retro-inspired leather bags and accessories, with a focus on quality craftsmanship and affordable prices | Retail Apparel and Fashion | 🇫🇷 Rouen | 145 | 2011 |

## 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.

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Source: https://www.tamtam.ai/l/multinational-companies-seine-maritime