Alberto Manuel Horcajo Aguirre

Instituto de Educación e Investigación operates as an investment company. The firm is based in Madrid.

Corporación de Reservas Estratégicas de Productos Petrolíferos engages in managing strategic reserves and controlling the security stocks of petroleum products and natural gas in Spain. It conducts analyses and inspections of member companies, ensuring that supplies do not fall below the compulsory minimum. The company was founded on June 6, 1995 and is headquartered in Madrid, Spain.

Ellalink Ireland Ltd. deploy and operates submarine cable systems. It offers capacity services, ultra low latency and network configuration services. The company was founded in 2012 and is headquartered in Dublin, Ireland.

Part of Svenska Cellulosa AB SCA, Grupo Lantero SA is a Spanish company that manufactures cardboard for packaging through subsidiaries. The private company is based in Madrid, Spain. The company was founded in 1950 by José Lantero.

Transportes Azkar SA provides logistics services. It offers door-to-door transit services through the business division Azkar Overseas, which also offers port logistics, customs, air freight, and ancilliary technical services. The group operates a fleet of 2,400 vehicles and 73 distribution and logistics facilities. Transportes Azkar was founded in 1933 and is headquartered in Lazkao, Spain.

Telxius Telecom SA operates as a international telecommunication infrastructure company. It owns and manages assets that offer services to multiple global telecommunications carriers, wholesale and retail telecommunications operators, and over-the-top content providers in several geographies. The firm operates through the following segments: Cable and Towers. The Cable segment provides whole Internet access to its customers worldwide via Telxius' submarine infrastructure and international circuits. The Towers segment offers co-location of space on multi-tenant telecommunication towers mainly to mobile network operators, both to Telefonica group companies and to third parties, through its portfolio of telecommunication towers. The company was founded on October 10, 2012 and is headquartered in Madrid, Spain.

Atento Holding Telecomunicaciones SA provides e-CRM solutions through the internet and call centers. It is a subsidiary of Telefonica SA. The company operates in the following countries: Brazil, Argentina, Chile, Peru, Guatemala, El Salvador, Puerto Rico, Colombia, Morocco, Spain and the United States of America. Atento was founded in 1999 and is headquartered in Madrid, Spain.