Ranking · Wallonia · NACE 72
Scientific research and development: the largest employers in Wallonia
As of 13 Nov 2026, 141 companies in Scientific research and development (NACE 72) in Wallonia report employees in recent accounts (financial years 2023 to 2026). The 10 largest employers account for 1,272.2 FTE, out of 2,534.8 for all of them; median headcount is 4.8 FTE. TotalEnergies OneTech Belgium leads with 297.7 FTE (financial year 2025).
Top 50 · Scientific research and development · Wallonia
Ranked by average headcount (FTE) reported in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | TotalEnergies OneTech Belgium 7181 Seneffe | €116.7m | €96.0m | €79.8m | 297.7 | 2025 |
| 2 | Baxter R and D Europe 7860 Lessines | €52.7m | €58.8m | €30.5m | 178.3 | 2025 |
| 3 | CER-Groupe 6900 Marche-en-Famenne | €33.8m | €22.4m | €22.6m | 150.6 | 2025 |
| 4 | Natagora 5000 Namur | €76.2m | €2.23m | €44.4m | 140.7 | 2025 |
| 5 | Diagenode 4102 Seraing | €21.1m | €11.9m | €8.70m | 100.5 | 2025 |
| 6 | STERIGENICS BELGIUM (Petit Rechain) 4800 Verviers | €69.1m | €44.1m | €64.9m | 93.8 | 2025 |
| 7 | Multitel 7000 Mons | €7.30m | €2.76m | €3.61m | 85.6 | 2025 |
| 8 | iTeos Belgium 6040 Charleroi | €46.3m | — | −€5.06m | 77.5 | 2025 |
| 9 | Materia Nova 7000 Mons | €31.5m | €2.58m | €5.80m | 75.4 | 2025 |
| 10 | Centre de Recherche en Aeronautique 6041 Charleroi | €17.2m | €3.17m | €6.13m | 72.1 | 2025 |
| 11 | Parexel Belgium 1300 Wavre | €6.82m | €13.1m | €4.35m | 63.1 | 2025 |
| 12 | CellCarta Biosciences 6041 Charleroi | €22.4m | — | €1.05m | 62.9 | 2023 |
| 13 | Centre d'Excellence en Technologies de l'Information et de la Communication 6041 Charleroi | €6.29m | 729,485 € | €2.39m | 55.2 | 2025 |
| 14 | Nanocyl 5060 Sambreville | €13.2m | — | €1.89m | 46.7 | 2026 |
| 15 | Imcyse 4031 Liège | €4.80m | €1.53m | −€33.4m | 41.9 | 2024 |
| 16 | Cercles des Naturalistes de Belgique 5670 Viroinval | €1.90m | 847,453 € | €1.07m | 41.5 | 2025 |
| 17 | Estetra 4000 Liège | €66.6m | €21.0m | −€2.04m | 40.3 | 2025 |
| 18 | Novadip Biosciences 1435 Mont-Saint-Guibert | €85.3m | — | €50.0m | 39.3 | 2025 |
| 19 | Novalix Belgium 1420 Braine-l'Alleud | €1.64m | — | 194,823 € | 36.3 | 2025 |
| 20 | Belgian Volition 5032 Gembloux | €42.6m | — | €10.4m | 34.1 | 2025 |
| 21 | Battlekart Europe 7711 Mouscron | €11.7m | €18.1m | €7.14m | 30.2 | 2025 |
| 22 | KiOmed Pharma 4041 Herstal | €19.7m | — | €9.02m | 30.2 | 2025 |
| 23 | Eyed Pharma 4000 Liège | €50.6m | €10.5m | €17.4m | 29.0 | 2025 |
| 24 | Centre de Recherches de l'Industrie Belge de la Ceramique 7000 Mons | €9.66m | €1.45m | €7.48m | 27.4 | 2025 |
| 25 | ImmunXperts 6041 Charleroi | €9.58m | — | −€1.60m | 26.7 | 2024 |
| 26 | Inokura 4000 Liège | €2.30m | €6.42m | 808,212 € | 25.8 | 2025 |
| 27 | Cryoport Belgium 4530 Villers-le-Bouillet | €16.2m | — | €12.5m | 25.3 | 2025 |
| 28 | PDC line Pharma 4000 Liège | €3.76m | — | −€7.80m | 22.4 | 2024 |
| 29 | ViiV Healthcare 1300 Wavre | €17.0m | €63.3m | €6.53m | 21.8 | 2025 |
| 30 | Euro-Multitel 7000 Mons | €5.04m | — | €1.20m | 20.2 | 2025 |
| 31 | Oncoradiomics 4000 Liège | €4.31m | — | −3,807 € | 20.2 | 2025 |
| 32 | Endo Tools Therapeutics 6041 Charleroi | €5.11m | — | −€15.1m | 19.4 | 2025 |
| 33 | Nature et Progrès - Belgique 5100 Namur | 682,321 € | — | 317,162 € | 19.3 | 2025 |
| 34 | Intressa Vascular 5032 Gembloux | €14.3m | 0 € | €11.8m | 19.3 | 2025 |
| 35 | Bio-Sourcing 4000 Liège | €6.59m | — | 894,791 € | 17.3 | 2025 |
| 36 | Tools4Patient 1435 Mont-Saint-Guibert | €23.1m | — | €19.5m | 16.2 | 2025 |
| 37 | Ipratech 6041 Charleroi | €4.29m | — | €1.56m | 15.6 | 2025 |
| 38 | Centre agri-environnemental de Michamps 6600 Bastogne | €1.86m | — | €1.22m | 14.7 | 2025 |
| 39 | Artialis 4000 Liège | €1.72m | — | 235,767 € | 13.6 | 2024 |
| 40 | Epicuris 4432 Ans | €5.27m | 164,183 € | €2.94m | 12.6 | 2025 |
| 41 | Santero Therapeutics 6041 Charleroi | €4.15m | — | €3.63m | 11.9 | 2025 |
| 42 | Novobiom 4000 Liège | €3.92m | — | 645,292 € | 11.6 | 2025 |
| 43 | Consolar Belgium 4500 Huy | €3.13m | — | 207,994 € | 11.3 | 2025 |
| 44 | Straticell Screening Technologies 5032 Gembloux | €1.24m | — | 262,323 € | 10.6 | 2024 |
| 45 | Celyad Oncology 1435 Mont-Saint-Guibert | €4.03m | 21,000 € | €2.24m | 10.5 | 2025 |
| 46 | Pôle Meca Tech 5020 Namur | €7.42m | — | €1.69m | 10.2 | 2025 |
| 47 | THERAtRAME 4000 Liège | €2.67m | — | €1.75m | 10.1 | 2025 |
| 48 | EsoBiotec 1435 Mont-Saint-Guibert | €16.5m | — | €12.4m | 9.4 | 2025 |
| 49 | CM4Cure 4000 Liège | €4.57m | — | €1.77m | 9.4 | 2025 |
| 50 | Syngulon 4102 Seraing | €5.66m | — | €2.52m | 9.0 | 2023 |
Ranking based on each company's own annual accounts (statutory, not consolidated): a subsidiary and its parent appear separately, and the ranking differs from lists based on consolidated group accounts. Headcount reported by the company for all its sites: the jobs may be located elsewhere.
“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.
Scientific research and development across Belgium → All sectors · Wallonia →
Other sectors · Wallonia
- 01 Crop and animal production, hunting and related service activities780
- 02 Forestry and logging194
- 08 Other mining and quarrying77
- 10 Manufacture of food products965
- 11 Manufacture of beverages98
- 13 Manufacture of textiles80
- 14 Manufacture of wearing apparel32
- 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials221
- 17 Manufacture of paper and paper products44
- 18 Printing and reproduction of recorded media183
- 20 Manufacture of chemicals and chemical products154
- 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations70
- 22 Manufacture of rubber and plastic products140
- 23 Manufacture of other non-metallic mineral products267
- 24 Manufacture of basic metals97
- 25 Manufacture of fabricated metal products, except machinery and equipment863
- 26 Manufacture of computer, electronic and optical products110
- 27 Manufacture of electrical equipment94
- 28 Manufacture of machinery and equipment n.e.c.245
- 29 Manufacture of motor vehicles, trailers and semi-trailers62
- 30 Manufacture of other transport equipment32
- 31 Manufacture of furniture148
- 32 Other manufacturing184
- 33 Repair, maintenance and installation of machinery and equipment290
- 35 Electricity, gas, steam and air conditioning supply55
- 37 Sewerage34
- 38 Waste collection, recovery and disposal activities185
- 39 Remediation activities and other waste management service activities12
- 41 Construction of residential and non-residential buildings1,635
- 42 Civil engineering231
- 43 Specialised construction activities4,771
- 46 Wholesale trade3,107
- 47 Retail trade6,427
- 49 Land transport and transport via pipelines955
- 50 Water transport13
- 52 Warehousing, storage and support activities for transportation248
- 53 Postal and courier activities44
- 55 Accommodation497
- 56 Food and beverage service activities3,657
- 58 Publishing activities116
- 59 Motion picture, video and television programme production, sound recording and music publishing activities116
- 60 Programming, broadcasting, news agency and other content distribution activities19
- 61 Telecommunication45
- 62 Computer programming, consultancy and related activities855
- 63 Computing infrastructure, data processing, hosting and other information service activities56
- 64 Financial service activities, except insurance and pension funding460
- 65 Insurance, reinsurance and pension funding, except compulsory social security30
- 66 Activities auxiliary to financial services and insurance activities977
- 68 Real estate activities1,204
- 69 Legal and accounting activities1,756
- 70 Activities of head offices and management consultancy1,072
- 71 Architectural and engineering activities; technical testing and analysis709
- 73 Activities of advertising, market research and public relations285
- 74 Other professional, scientific and technical activities118
- 75 Veterinary activities173
- 77 Rental and leasing activities148
- 78 Employment activities145
- 79 Travel agency, tour operator and other reservation service and related activities124
- 80 Investigation and security activities39
- 81 Services to buildings and landscape activities738
- 82 Office administrative, office support and other business support activities285
- 84 Public administration and defence; compulsory social security25
- 85 Education560
- 86 Human health activities1,817
- 87 Residential care activities621
- 88 Social work activities without accommodation415
- 90 Arts creation and performing arts activities144
- 91 Libraries, archives, museums and other cultural activities62
- 92 Gambling and betting activities27
- 93 Sports activities and amusement and recreation activities459
- 94 Activities of membership organisations223
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles524
- 96 Personal service activities823
Municipalities with the most companies in the sector · Wallonia
- 4000 Liège (Glain, Rocourt)39
- 6041 Charleroi (Gosselies)33
- 1410 Waterloo16
- 1300 Wavre (Limal)11
- 1348 Ottignies-Louvain-la-Neuve (Louvain-La-Neuve)9
- 4020 Liège (Bressoux, Jupille-Sur-Meuse, Wandre)9
- 5032 Gembloux (Bossière, Bothey, Corroy-Le-Château, …)9
- 1435 Mont-Saint-Guibert (Corbais, Hévillers)8
- 1380 Lasne (Couture-Saint-Germain, Lasne-Chapelle-Saint-Lambert, Maransart, …)7
- 4102 Seraing (Ougrée)6
- 7000 Mons6
- 1370 Jodoigne (Dongelberg, Jauchelette, Jodoigne-Souveraine, …)5
Frequently asked questions
Which is the largest employer in Scientific research and development in Wallonia?
Among companies, TotalEnergies OneTech Belgium, with 297.7 full-time equivalents reported (financial year 2025).
Are all the jobs located in the area?
Not necessarily: headcount is reported by the company for all its sites, and the company is ranked by the address of its registered office. 141 out of 409 companies in the sector report employees there.
Why does this ranking differ from other lists?
It uses each company's annual accounts as filed with the National Bank, not consolidated group accounts. A holding, a subsidiary or a purchasing entity can therefore appear separately. Only companies whose latest accounts are less than 3 years old are ranked.
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Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 13 Nov 2026.