Otávio Marques de Azevedo

AG Telecom Participações SA provides engineering, construction and telecommunications services, as well as engages in public concessions. The company is headquartered in Belo Horizonte, Brazil.

Allum Participações SA is a private company based in Rio de Janeiro, Brazil. The Brazilian company specializes in telephone communications except radiotelephone.

CTX Participações SA engages in financial investment and shareholding activities. Its interests focus on the contact center and BPO sectors. The company was founded on April 25, 2008 and is headquartered in Rio de Janeiro, Brazil.

Telemar Participações SA is engaged in investment activities. Its interests focus on the telecommunications industry. It operates through the following segments: Fixed Telephony/Data, Mobile Telephony, and Others. The Fixed Telephony/Data segment provides voice and data transmission services. The Mobile Telephony segment offers calls, messaging, and 3G services for mobile devices. The Others segment encompasses internet access, telemarketing and customer services, cable television, and payment management services. The company was founded on July 29, 1997 and is headquartered in Rio de Janeiro, Brazil.

CEMIG Geração e Transmissão SA engages in electricity generation and transmission activities. It specializes in the provision of power supply and distribution support services. It also focuses on the installment, management, and operation of thermal development, hydroelectric power, and wind generation plants. The company was founded on September 8, 2004 and is headquartered in Belo Horizonte, Brazil.

Cemig Distribuição SA engages in electric energy distribution. Its solutions include study, plan, project, build, and commercially operate systems of distribution and sale of electricity and related services. The company was founded on September 8, 2004 and is headquartered in Belo Horizonte, Brazil.

Andrade Gutierrez SA operates as a holding company with interests in the engineering and construction industry. It is involved in the engineering and construction of various projects, such as subways, railways, airports, buildings, sanitation, irrigation, highways, bridges, overpasses, refineries, ports, arenas, pipelines, oil wells, shipyards, mining and steel mills, hydropower and thermal plants, and nuclear plants. The company was founded on September 2, 1948 and is headquartered in Belo Horizonte, Brazil.