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Mr. Martinez was elected as an executive officer in August 2011, and is in charge of the commercial and logistic areas of the steel, cement and special sales segment. He has been serving CSN since 2002, having previously acted as sales officer, director of Nacional Minérios S.A. (which ceased to exist on December 31, 2015) and as member of the board of directors of Companhia Florestal do Brasil and Companhia Metalúrgica Prada. Mr. Martinez is also a member of the board of directors of Associação Brasileira de Metalurgia, Materiais e Mineração, or ABM, and deputy member of the board of directors of FTL – Ferrovia Transnordestina Logística and Transnordestina Logística S.A.. He is also currently serving as an Officer of Estanho de Rondônia S.A., Minérios Nacional S.A., CSN Energia, S.A. and Stahlwerk Thüringen GmbH, and as member of the board of directors of CSN Mineração (controlled by us) and chairman of the board of directors of MRS, which is jointly controlled by us, and a member of the Deliberative Council of Caixa Beneficente dos Empregados da Companhia Siderúrgica Nacional, or CBS. Since March 2017 he is also member of the board of officers of Câmara de Comércio e Indústria Brasil – Alemanha. Prior to joining CSN, Mr. Martinez was a sales officer at Alcan Alumínio do Brasil S.A., having worked at that company for 14 years in different departments (processing, quality, product/market development and sales). He also acted as Executive Officer of the Brazilian Center of Steel Construction – CBCA and of the Brazilian Association of Metallic Construction, or ABCEM, and he was president of the Brazilian Association of Steel Packaging – ABEAÇO. Recently, Mr. Martinez received the prize Prêmio Barão de Mauá – Instituto Mauá de Tecnologia as Professional and Market Highlight in 2016. Mr. Martinez graduated with a degree in Metallurgical Engineering from Instituto Mauá de Tecnologia, or IMT, has a graduate degree in industrial management from the School of Production Engineering of the Universidade de São Paulo, and also graduated from the Corporate Management Development Program at Alcan Aluminum Limited in Montreal, Canada.