Sergio Carvalho Dias Carneiro

Magnesita Refratarios SA engages in the provision of refractory solutions, services, and industrial minerals. It operates through the following segments: Refractory Solutions, Minerals, and Services. The Refractory Solutions segment offers bricks, masses, mortars, valves, and pre-molded concrete. The Minerals segment comprises of magnesite sinter and caustic magnesia. The Services segment includes processes ranging from refractory assembly and removal to monitoring the customer's production process and conducting post mortem tests. The company was founded in 1939 and is headquartered in São Paulo, Brazil.

Tempo Participações SA engages in the provision of healthcare administration services. It operates through Home Care, and Specialized Assistance segments. The Home Care segment offers home assistance services to health plan operators, public self-management, private entities and private patients, including household hospitalization, and home care. The Specialized Assistance segment provides specialized assistance services, offering paid services based on a fixed monthly fee, including services for vehicles, roadside assistance and temporary replacement of vehicles; travel assistance, such as medical care, repatriation and assistance in case of baggage loss; domestic emergency services; and personal services such as funeral assistance and in accidents. The company was founded on January 1, 2006 and is headquartered in Barueri, Brazil.

USS Soluções Gerenciadas SA provides assistance services. Its solutions include real estates, vehicles, and people. The company was founded in 1994 and is headquartered in Barueri, Brazil.