Scientific research and development: the largest employers in Flemish Brabant
As of 13 Nov 2026, 38 companies in Scientific research and development (NACE 72) in Flemish Brabant report employees in recent accounts (financial years 2025 to 2026). The 10 largest employers account for 3,731.8 FTE, out of 3,900.7 for all of them; median headcount is 8.1 FTE. Interuniversitair Micro-Electronica Centrum leads with 2,904.3 FTE (financial year 2025).
Top 38 · Scientific research and development · Flemish Brabant
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 | Interuniversitair Micro-Electronica Centrum 3001 Leuven | €1.27bn | €804.3m | €512.1m | 2,904.3 | 2025 |
| 2 | TMC Science & Technology 1930 Zaventem | €24.0m | €41.8m | €3.00m | 324.5 | 2025 |
| 3 | Cargill R&D Centre Europe 1800 Vilvoorde | €99.2m | €62.7m | €74.3m | 186.9 | 2025 |
| 4 | von Karman Institute for Fluid Dynamics 1640 Sint-Genesius-Rode | €67.4m | €9.76m | €27.0m | 158.0 | 2025 |
| 5 | CD3 Labs 3001 Leuven | €1.79m | €10.00m | 21,267 € | 43.5 | 2025 |
| 6 | PSI CRO Belgium 3000 Leuven | €1.13m | — | 617,185 € | 26.7 | 2025 |
| 7 | icometrix 3012 Leuven | €5.74m | — | −€1.82m | 25.2 | 2025 |
| 8 | Biomedical Systems 3000 Leuven | €11.2m | — | €9.06m | 22.3 | 2025 |
| 9 | ClinChoice Belgium 1950 Kraainem | €2.59m | — | 177,888 € | 20.5 | 2025 |
| 10 | Swave 3001 Leuven | €29.9m | — | €20.8m | 19.9 | 2025 |
| 11 | K5 Therapeutics 3001 Leuven | €3.56m | — | €2.96m | 17.8 | 2025 |
| 12 | AstriVax Therapeutics 3001 Leuven | €12.5m | — | €10.7m | 17.1 | 2025 |
| 13 | Infarama 1853 Grimbergen | €1.63m | — | 450,269 € | 15.3 | 2025 |
| 14 | Aligos Belgium 3001 Leuven | €1.82m | — | €1.07m | 12.9 | 2025 |
| 15 | Antikankerfonds-Fonds Anticancer-Anticancer Fund 1860 Meise | €5.99m | — | €5.32m | 11.4 | 2025 |
| 16 | Augustine Therapeutics 3001 Leuven | €30.9m | — | €29.0m | 11.0 | 2025 |
| 17 | NovelYeast 3052 Oud-Heverlee | 968,333 € | — | 330,024 € | 9.3 | 2025 |
| 18 | Centrum voor Agrarische Geschiedenis 3000 Leuven | €1.32m | — | 909,094 € | 9.2 | 2025 |
| 19 | Montis Biosciences 3001 Leuven | €2.97m | — | −€5.01m | 8.2 | 2025 |
| 20 | Pall Artelis 3320 Hoegaarden | €18.2m | — | €6.30m | 7.9 | 2025 |
| 21 | Societe Internationale de la Science Horticole - I.S.H.S. - International Society for Horticultural Science 3360 Bierbeek | €1.52m | 931,992 € | €1.06m | 7.0 | 2025 |
| 22 | Revision Implant 3053 Oud-Heverlee | 752,620 € | — | 387,038 € | 5.3 | 2025 |
| 23 | ORS Europe en Organ Recovery Systems 1831 Machelen (Brab.) | €8.73m | — | €3.50m | 5.1 | 2025 |
| 24 | ReWind Therapeutics 3001 Leuven | €2.09m | — | −€2.60m | 4.9 | 2025 |
| 25 | Farma Service 1853 Grimbergen | 395,221 € | — | 290,984 € | 4.8 | 2025 |
| 26 | SciMedBE 3000 Leuven | 777,944 € | — | −441,284 € | 4.0 | 2025 |
| 27 | Gynaia Belgium 3000 Leuven | €1.00m | — | −668,402 € | 3.5 | 2025 |
| 28 | Life Sciences Research Partners 3000 Leuven | €11.8m | 363,437 € | €11.7m | 3.2 | 2025 |
| 29 | DR.Ann Pastijn-Gynaecologie-Verloskunde 1930 Zaventem | 599,816 € | — | 137,318 € | 2.7 | 2025 |
| 30 | Vision3F 3118 Rotselaar | 483,697 € | — | −64,697 € | 2.6 | 2025 |
| 31 | Tavira Therapeutics 3001 Leuven | 863,682 € | — | −72,543 € | 1.9 | 2025 |
| 32 | PartiX 3010 Leuven | 129,208 € | — | 122,056 € | 1.0 | 2025 |
| 33 | Dokter Hendrik Luyten 3200 Aarschot | 700,562 € | — | 584,942 € | 0.8 | 2025 |
| 34 | Casc8 3140 Keerbergen | 822,069 € | — | 611,898 € | 0.6 | 2025 |
| 35 | Esset Engage 1860 Meise | 298,046 € | — | 287,461 € | 0.5 | 2025 |
| 36 | Ryp Labs 1831 Machelen (Brab.) | 387,284 € | — | 385,147 € | 0.4 | 2025 |
| 37 | Dr. Peetermans Els , Oogheelkunde 1755 Pajottegem | 897,744 € | — | 462,420 € | 0.3 | 2025 |
| 38 | Autonomycs 1731 Asse | 413,442 € | — | −139,626 € | 0.2 | 2026 |
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 · Flemish Brabant →
Other sectors · Flemish Brabant
- 01 Crop and animal production, hunting and related service activities186
- 10 Manufacture of food products245
- 11 Manufacture of beverages30
- 13 Manufacture of textiles16
- 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials40
- 17 Manufacture of paper and paper products24
- 18 Printing and reproduction of recorded media63
- 20 Manufacture of chemicals and chemical products29
- 22 Manufacture of rubber and plastic products42
- 23 Manufacture of other non-metallic mineral products45
- 24 Manufacture of basic metals11
- 25 Manufacture of fabricated metal products, except machinery and equipment158
- 26 Manufacture of computer, electronic and optical products50
- 27 Manufacture of electrical equipment31
- 28 Manufacture of machinery and equipment n.e.c.90
- 29 Manufacture of motor vehicles, trailers and semi-trailers16
- 30 Manufacture of other transport equipment10
- 31 Manufacture of furniture59
- 32 Other manufacturing64
- 33 Repair, maintenance and installation of machinery and equipment73
- 37 Sewerage12
- 38 Waste collection, recovery and disposal activities34
- 41 Construction of residential and non-residential buildings578
- 42 Civil engineering84
- 43 Specialised construction activities1,405
- 46 Wholesale trade1,556
- 47 Retail trade1,709
- 49 Land transport and transport via pipelines531
- 51 Air transport11
- 52 Warehousing, storage and support activities for transportation112
- 53 Postal and courier activities33
- 55 Accommodation75
- 56 Food and beverage service activities1,276
- 58 Publishing activities40
- 59 Motion picture, video and television programme production, sound recording and music publishing activities62
- 61 Telecommunication32
- 62 Computer programming, consultancy and related activities590
- 63 Computing infrastructure, data processing, hosting and other information service activities37
- 64 Financial service activities, except insurance and pension funding229
- 66 Activities auxiliary to financial services and insurance activities292
- 68 Real estate activities440
- 69 Legal and accounting activities479
- 70 Activities of head offices and management consultancy543
- 71 Architectural and engineering activities; technical testing and analysis265
- 73 Activities of advertising, market research and public relations177
- 74 Other professional, scientific and technical activities51
- 75 Veterinary activities56
- 77 Rental and leasing activities64
- 78 Employment activities49
- 79 Travel agency, tour operator and other reservation service and related activities41
- 80 Investigation and security activities22
- 81 Services to buildings and landscape activities286
- 82 Office administrative, office support and other business support activities146
- 85 Education106
- 86 Human health activities483
- 87 Residential care activities91
- 88 Social work activities without accommodation133
- 90 Arts creation and performing arts activities47
- 91 Libraries, archives, museums and other cultural activities14
- 93 Sports activities and amusement and recreation activities110
- 94 Activities of membership organisations64
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles153
- 96 Personal service activities282
Municipalities with the most companies in the sector · Flemish Brabant
- 3001 Leuven (Heverlee)26
- 3000 Leuven9
- 1930 Zaventem (Nossegem)6
- 1831 Machelen (Brab.) (Diegem)5
- 1853 Grimbergen (Strombeek-Bever)5
- 3010 Leuven (Kessel Lo)5
- 3140 Keerbergen5
- 1640 Sint-Genesius-Rode (Rhode-Saint-Genèse)4
- 1970 Wezembeek-Oppem4
- 3090 Overijse4
- 1730 Asse (Bekkerzeel, Kobbegem, Mollem)3
- 1731 Asse (Relegem, Zellik)3
Frequently asked questions
Which is the largest employer in Scientific research and development in Flemish Brabant?
Among companies, Interuniversitair Micro-Electronica Centrum, with 2,904.3 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. 38 out of 147 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.
Analyse companies · Flemish Brabant
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Open the full file →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.