Groupe Bruxelles Lambert SA is a holding company, which engages in the management of investments in companies involved in the oil, energy, construction, and production industries. It operates through the following segments, Holding, Imerys, and Sienna Capital. The Holding segment manages investments as well as the non-consolidated operating companies and associates. The Imerys segment consists of the Imerys group, a French group listed on NYSE Euronext Paris, which holds positions in each of its four business lines: Energy Solutions & Specialities; Filtration & Performance Additives; Ceramic Materials; and High Resistance Minerals. The Sienna Capital segment includes, on one hand, under investment activities, the companies Sienna Capital, ECP, ECP II, ECP III, PAI Europe III, Sagard, Sagard II and Sagard III, PrimeStone, BDT Capital Partners II, Kartesia and MÃ©rieux Participations I and II and, on the other, under consolidated operating activities, the operating subsidiaries of ECP III (sub-groups ELITech, De Boeck, Benito, Sausalitos, Golden Goose, etc.). The company was founded on January 4, 1902 and is headquartered in Brussels, Belgium.