Fagron supplies products, services to professionals and institutions in the healthcare sector in Europe, the U.S.A. and Brazil. Co.'s activities are subdivided into four divisions. Through Fagron, Co. offers products and concepts for pharmaceutical compounding. Through Arseus Dental, Co. supplies dental products and concepts to dentists and dental laboratories in Belgium, the Netherlands, France, Germany and Switzerland. Through Arseus Medical, Co. supplies medical and surgical products to specialists, elderly homes, homecare nurses and hospitals in Belgium and the Netherlands. Through Corilus, Co. supplies ICT total solutions for medical specialists in Belgium, the Netherlands and France.

Groupe Bruxelles Lambert is a holding company. Through its subsidiaries, Co. operates through the following segments: Imerys, which consists of the Imerys group that operates in four business lines of energy solutions and specialties, filtration and performance additives, ceramic materials, and high resistance minerals; and Financial Pillar, which includes, on the one hand, under investment activities, the companies Sienna Capital, Ergon Capital Partners (ECP), ECP II, ECP III, PAI Europe III, Sagard, Sagard II and Sagard III, Kartesia and Merieux Participations I and II and, on the other hand, under consolidated operating activities, the operating subsidiaries of ECP III.

IBA- Ion Beam Applications develops and markets technologies and pharmaceutical products for the healthcare sector, with a focus on cancer diagnosis and therapy. Co. is also engaged in the sterilization and ionization market. Co. operates in two primary business segments: Equipment and Pharmaceuticals. Co.'s Equipment segment encompasses development, fabrication, and services associated with medical and industrial particle accelerators, proton therapy systems, and a range of dosimetry products, while Co.'s Pharmaceuticals segment encompasses the production and distribution of radiopharmaceutical agents as well as its bioassay operations.

Melexis designs, develops, tests and markets advanced integrated circuits primarily for the automotive industry. Co. sells its products to a wide customer base in the automotive, medical and industrial markets in Europe, Asia and North America. Co.'s main products are Hall effect ICs, Pressure and Acceleration Sensors, Sensor Interface ICs, Automotive Systems-on-a-Chip, Embedded Microcontrollers, Bus System Chips, Optical and Infrared sensors. In each case the products are primarily developed for automotive applications and designated lead customers with subsequent use in commercial and industrial applications.

PostNL is a mail, parcel and e-commerce corporation with operations in the Netherlands, Germany, Italy, Belgium, and the United Kingdom. Co. has been assigned by the Dutch government to carry out the UPD (Universele Postdienst, Dutch for Universal Postal Service). Carrying out the UPD requires, amongst other things, Co. to deliver mail throughout the Netherlands five days a week (Tuesday through Saturday) and to maintain enough mailboxes in the country. ACM is charged with monitoring and enforcing the execution by Co. Co.'s operations are organized along three business segments: Mail in the Netherlands; Parcels; and International. Co. maintains over ten networks across thirteen countries.