Agfa-Gevaert develops, produces and distributes various analog and digital imaging systems and IT solutions, mainly for the printing industry and the healthcare sector, as well as for specific industrial applications. Co.'s operations can be divided into three business segments: Agfa Graphics, which provides integrated prepress products and services to the printing industry; Agfa HealthCare, which provides diagnostic imaging and healthcare IT products for hospitals and care centers around the world; and Agfa Specialty Products, which supplies a variety of film-based products to business- to-business customers outside the graphic and healthcare markets.

Bpost is engaged in the provision of national and international mail and parcels services comprising the collection, transport, sorting and distribution of addressed and non-addressed mail, printed documents, newspapers and parcels. In addition, through its subsidiaries and business units, Co. sells a range of other products and services, including postal, parcels, banking and financial products, express delivery services, document management and related activities. Co. operates through two business units: the Mail & Retail Solutions and the Parcels & International.

Galapagos is a clinical-stage biotechnology company specialized in the discovery and development of small molecule medicines with novel modes of action, addressing disease areas of high unmet medical need. Execution on its proprietary drug target discovery platform has delivered a pipeline that consists of three Phase 2, three Phase 1, five pre-clinical, and 20 discovery programs in inflammation, cystic fibrosis, or CF, osteoarthritis, and other indications. Co.'s highly flexible platform offers applicability across a broad set of therapeutic areas. Co.'s programs include filgotinib, GLPG1837, GLPG1690, GLPG2222, GLPG1972.

Proximus supplies integrated telecommunications services on the Belgian market. Co.'s activities are divided into four segments: Consumer Business Unit (CBU), which sells voice products and services, internet and television, on fixed and mobile networks, to residential customers; Enterprise Business Unit (EBU), which caters to professional customers; Service Delivery Engine and Wholesale, which centralizes all the network and IT services and costs, provides services to CBU and EBU and sells these services to other telecom and cable operators; and International Carrier Services, which focuses on international carrier activities.

UCB is a global biopharmaceutical company focused on severe diseases in two therapeutic areas, namely central nervous system disorders and immunology. In the area of central nervous system disorders, Co. is focused on advanced Parkinson's disease, epilepsy, restless legs syndrome and epilepsy. In the area of immunology disorders, Co. is focused on rheumatoid arthritis, axial spondyloarthritis, psoriatic arthritis, systemic lupus erythematosus, juvenile idiopathic arthritis, post-menopausal osteoporosis, systemic lupus erythematosus and immunological diseases.