巴西国家钢铁 SID

Tufi Daher Filho has served as our executive director of infrastructure and logistics since December 9, 2025. He has also served as chief executive officer of TLSA since February 1, 2022 and as chief executive officer of FTL since May 21, 2024. He previously served as a standing member of the fiscal council and as coordinator of the audit committee of CSN Mineracao, as well as a member and chairman of the fiscal council of Grupo Assai and Grupo Pao de Acucar. He has also served as a member of the deliberative council of APAFASS (Associacao dos Participantes e Assistidos da Fundacao Atlantico de Seguridade Social). Mr. Filho is a partner at TDF Consultoria Empresarial Ltda. and THE Empreendimentos e Construtora Ltda., and is the owner of Loungerie, Osklen and Richards brand franchises in Uberlandia, Minas Gerais. He has also served as advisor to Companhia Paulista de Trens Metropolitanos (CPTM), technical advisor to Hidrovias do Brasil S.A., advisor to the National Association of Railway Transporters (ANTF), chairman of the board of directors of MRS, executive director of operations of the Telemar/Oi Group, director of southeast operations of the Telemar/Oi Group, and superintendent director of Telemar/Oi in the states of Amazonas, Pernambuco and Piaui. Mr. Filho holds a degree in civil engineering from Universidade Catolica de Minas Gerais. He also completed a professional course in transportation planning taught by the Japan International Cooperation Agency, holds an MBA from Fundacao Dom Cabral and participated in the advanced management program in partnership with INSEAD in France.

David Moise Salama was elected as an executive officer in August 2, 2011, and is responsible for insurance and credit areas. He has been with us since 2006, previously serving as executive officer for investor relations. He is chief executive officer of Companhia Florestal do Brasil, director of CEEE-G, chairman of the board of CBSI, vice-chairman of the board of Ita Energetica S.A., and participates in the management of certain of our subsidiaries, including Lusosider and Gramperfil. He is also an alternate member of the board of directors of FTL and TLSA, and a member of the board of Companhia Energetica Chapeco S.A. His previous experience includes financial leadership roles at Tecnisa, Birmann, and Goldfarb, as well as Unilever and PwC. Mr. Salama graduated in accounting and has a master's in business administration in finance, both from the School of Economics, Business and Accounting of the University of Sao Paulo. He complemented his academic education by attending the Oxford Advanced Management and Leadership Program of Said Business School at Oxford University, England, and the Harvard Law School Program on Negotiation at Harvard University.

Eneas Garcia Diniz has served as an executive officer without specific designation since August 2024. He previously served as our executive officer from June 21, 2005 to July 31, 2016, overseeing our steel and cement production, energy, ports, mining and environmental operations. He has also held various leadership and advisory roles at companies directly and indirectly controlled by us. He holds a degree in mechanical engineering from the Pontifical Catholic University of Rio de Janeiro, an MBA in industrial strategy and business management from Fluminense Federal University, and an executive MBA from Fundacao Dom Cabral.

Benjamin Steinbruch has served as a member of our board of directors since April 23, 1993, and held the position of chairman of the board of directors from April 1995 to April 2023. He has also served as our chief executive officer since April 30, 2002, and is responsible for institutional affairs and mining and railway interests. He is also chairman of the board of directors of CSN Mineracao and several of our subsidiaries, including companies within Grupo Tora, as well as chairman of the deliberative council of Fundacao CSN. He also serves as chairman of the board of directors of Textilia S.A., Fibra Cia. Securitizadora de Creditos Imobiliarios, Banco Fibra S.A., Elizabeth S.A. - Industria Textil, and Vicunha Steel S.A.; vice chairman of Vicunha Acos S.A. and holds positions in other entities which are part of our controlling group. He is also a member of the board of directors of the Jockey Club de Sao Paulo and the administrative council of the Portuguese Chamber of Commerce. Over the past five years, he has served as first vice president of FIESP, member of FIESP's strategic superior council, board member of the Roberto Simonsen Institute, member of the Economic and Social Development Council, and member of the Interinstitutional Advisory Council of the Sao Paulo Court of Justice. He holds a degree in business administration from Fundacao Getulio Vargas - SP and a postgraduate degree in marketing and finance from Fundacao Getulio Vargas - SP.

Miguel Ethel Sobrinho has served as an independent member of our board of directors since April 26, 2019, and as a member of our audit committee since May 3, 2019. He also serves as an independent member of the board of directors of CSN Mineracao. He is a director and shareholder of Participa - Empreendimentos Imobiliarios e Participacoes Ltda., where he acts as an entrepreneur and developer in shopping center ventures, hydro and gas energy projects, and fast-food networks. He holds a degree in production engineering from the Polytechnic School at the University of Sao Paulo and a master's degree in business administration from the School of Economics and Administration at the University of Sao Paulo. He has also taught investment and project analysis at the same institution and is a founding member of the board of trustees of Fundacao Instituto de Administracao at the University of Sao Paulo.

Augusto Cesar Ferreira Lara has served as our executive director of steel production since December 9, 2025. He previously built an executive career at Villares Metals S.A., part of the Voestalpine Group, for almost 25 years, where he progressed from trainee engineer to executive director of operations and member of the executive board. In this role, he held positions across industrial operations, research and development, engineering, integrated planning and management systems, and marketing and sales. He also served as head of operations for Acos Bohler-Uddeholm do Brasil and Villares Metals International in the Netherlands, both part of the Voestalpine Group. Mr. Lara holds a degree in metallurgical engineering from Universidade Federal de Minas Gerais, a specialization from Universidade Federal de Sao Carlos and an executive MBA from Fundacao Dom Cabral.

Antonio Bernardo Vieira Maia has served as an independent member of our board of directors since April 30, 2013, and as a member of our audit committee since August 8, 2013, including as its chairman from May 6, 2014 to October 30, 2017. He also served on our financial committee from October 7, 2014 to December 31, 2016. Mr. Maia has been the chief executive officer of BRG Capital Ltda. since July 2005. He previously served as an executive at Credit Suisse / Banco Garantia de Investimentos S.A. from April 1995 to May 2005. Earlier in his career, he worked at Citibank Brazil starting in 1982 and later at Citibank New York from 1986, where he served as an institutional investment analyst for Citigroup's Latin American operations until becoming a director at Citibank New York. He also served as an associate at Banco Bozano Simonsen de Investimentos from August 1979 to December 1981. Mr. Maia has served on the boards of directors of TLSA, FTL and CSN Mineracao, and was a board member of Banque Benedict Hentsch & Cie SA in Geneva, Switzerland, in 2006. He holds a degree in business and public administration from Fundacao Getulio Vargas.

Antonio Marco Campos Rabello has held the position of chief financial officer since March 18, 2024, being responsible for our treasury, controllership, tax, and accounting departments, and also serving as investor relations officer. He is also the administrative-financial officer of Equibras S.A. and a permanent member of the deliberative council of the CSN Employees' Beneficent Fund (CBS). Previously, he served as Unipar's chief financial and investor relations officer between 2022 and 2024. He also held the position of chief financial officer at Novonor from 2018 to 2022; at Odebrecht Engenharia e Construcao, from 2013 to 2018; at Novonor Energia, from 2011 to 2013; and at Ocyan, from 2008 to 2011. In addition, between 2003 and 2008 he worked at Braskem as manager and director of controllership. He holds a degree in business administration from Universidade de Salvador and an MBA in business and finance from Fundacao Getulio Vargas.

Luis Fernando Barbosa Martinez was elected as an executive officer since August 2, 2011, currently responsible for commercial and logistics operations in the steel, cement, and special sales segments. He has been with us since 2002 and also serves on the boards of MRS, TLSA, and other subsidiaries. He has held several commercial leadership roles at Alcan Aluminio do Brasil S.A. and in industry associations. Mr. Martinez holds a degree in metallurgical engineering from Instituto Maua de Tecnologia, a postgraduate degree in industrial administration from the School of Production Engineering of the University of Sao Paulo and completed executive training at Alcan Aluminum Limited in Montreal, Canada. He was awarded the Barao de Maua Prize in 2016 and is a certified board member by Brazilian Institute of Corporate Governance (Instituto Brasileiro de Governanca Corporativa), or the IBGC.

Pedro Van Langendonck Teixeira de Freitas has served as an executive officer without specific designation since June 3, 2025. He previously held senior leadership roles at Braskem S.A., including vice president of finance, procurement, strategy and institutional relations from 2016 to 2025, and director of strategic planning from 2011 to 2016. He has served on several boards, including Refinaria Riograndense, Braskem Siam, Sustainea Bioglycols, Braskem Idesa and Vexty Previdencia, where he served as chairman from 2023 to 2025. He was also a member of the economic committee of Abiquim from 2011 to 2015. Mr. Freitas holds a degree in industrial engineering from the University of Sao Paulo and an MBA in business administration from INSEAD Business School.