Board of Directors and Councils

Board of Directors

Education: Degree in Business Administration from the Pontifíca Universidade Católica do Rio Grande do Sul (PUC — RS). Studied General Business Administration at the University of Toronto (Canada), Marketing at the Ashridge Business School (UK), and Advanced Management at the Wharton School, University of Pennsylvania (United States).

Professional Experience: Has 40 years of experience at Gerdau and held the position of Chief Executive Officer (CEO) (2007-2017). He was President of the Worldsteel Association (2018-2019). Currently is (i) Chairman of the Board of Directors of Gerdau SA, and member of its advisory committees, (ii) Chairman of the Board of Directors and Metalúrgica Gerdau SA, a listed company, holding company of Gerdau S.A., (iii) Board member of the Executive Committee of the Worldsteel association, (iv) Board Member of Directors of Instituto Aço Brasil (Brazilian Steel Institute), (v) Board Member of Alacero (Latin American Steel Association), (vi) Vice Chairman of the Federation of Industries of São Paulo – FIESP, (vii) Vice Chairman of the Federation of Industries of Rio Grande do Sul – FIERGS and (viii) Board Member of Transforma RS.

Education: Mr. Johannpeter holds a bachelor’s degree in Business Administration from Pontifícia Universidade Católica do Rio Grande do Sul (PUC–RS — Brazil). In addition, he has studied General Business Administration at the University of Toronto (Canada), Marketing at the Ashridge Business School (UK), and Advanced Management at the Wharton School, of the University of Pennsylvania (United States).

Professional Experience: He has worked at Gerdau for 40 years and was its (CEO) between ( 2007- and 2017). He was the Chairman of the Worldsteel Association (2018-–2019). He currently holds the positions of (i) Vice- Chairman of the Board of Directors of Gerdau S.A., and member of its advisory committees, ; (ii) Vice -Chairman of the Board of Directors of Metalúrgica Gerdau S.A., a publicly held holding company with a controlling interest in Gerdau S.A.; (iii) member of the Executive Committee of the Worldsteel Association, ; (iv) Board member of Instituto Aço Brasil; (v) Board member of the Latin American Steel Association (Asociación Latinoamericana del Acero, Alacero); (vi) Vice- Chairman of the Federation of the Industries of the State of São Paulo – ( Federação das Indústrias de São Paulo, FIESP, ); (vii) Vice- Chairman of the Federation of the Industries of the State of Rio Grande do Sul (Federação das Indústrias do Rio Grande do Sul, – FIERGS); and (viii) a Board member of Transforma RS.

Education: Mr. Johannpeter earned a bachelor’s degree in Law from Unisinos in 1995 and an MBA in Marketing and Finance from the Kellogg School of Management, in Illinois (United States).

Professional Experience: He has worked at Gerdau for over 37 years. He served as a Vice-President of the Gerdau Executive Committee (Comitê Executivo Gerdau, CEG), coordinating the Special Steel Business Operation, the Latin American Business Operation, and the actions arising from the Gerdau 2022 Project – Strategy (2014-2017). He was the Vice Chairman of the Board of Directors of Gerdau S.A. and of Metalúrgica Gerdau S.A., a publicly held holding company with a controlling interest in Gerdau S.A. (2018-2020). He is currently (i) the Chairman of the Board of Directors of Gerdau S.A. and a member of its advisory committees; (ii) the Chairman of the Board of Directors of Metalúrgica Gerdau S.A., a publicly held holding company with a controlling interest in Gerdau S.A.; (iii) a Board member of Gerdau Previdência; (iv) a Board member of the Instituto Gerdau; (v) a Board member of the Institute for Studies in Industrial Development (Instituto de Estudos para o Desenvolvimento Industrial, IEDI); and (vi) a member of the Global Advisory Board (GAB) of Kellogg Northwestern.

Education: Mr. Johannpeter holds a bachelor’s degree in Metallurgical Engineering from the Federal University of Rio Grande do Sul (UFRGS). In addition, he has studied Operations Management at the University of London (Canada) and Executive Development at Penn State (United States) and completed an Advanced Management Program at Harvard (United States).

Professional Experience: He has worked at Gerdau for 40 years and was its Chief Operating Officer between 2007- and 2012. In December 2017, he resigned his executive roles at the Gerdau Executive Committee (Comitê Executivo Gerdau, CEG) where he used to be in charge of the Brazil Long Steel Business Operation and Global Engineering, Industry, and Health & Safety Processes. He served as Chairman of the Board of Directors of Gerdau S.A. (2015–2020), and Metalúrgica Gerdau S.A.(2016–2020), a publicly held holding company with a controlling interest in Gerdau S.A. He currently holds the positions of (i) Vice-Chairman of the Board of Directors of Gerdau S.A. and member of its advisory committees and (ii) Vice-Chairman of the Board of Directors of Metalúrgica Gerdau S.A.

Education: Mr. da Cunha holds a bachelor’s degree in Mechanical Engineering from the Federal University of Minas Gerais (UFMG). ), an MBA degree in Project Management from Fundação Getulio Vargas (Brazil), an MBA in General Business Administration from INSPER Business School (Brazil), a certificate in Leading Change and Organizational Renewal from Harvard Business School (United States), and a certificate in Advanced Corporate Finance from the London Business School (UK).

Professional Experience: He has worked at Gerdau for 18 years. He served as an Executive Officer at Gerdau Aços Longos e Planos in Brazil, Chief Industrial Officer at Gerdau India, and Chief Information Officer (CIO) at Gerdau. Since January 2018, he has been the of Gerdau S.A. and the of Metalúrgica Gerdau S.A., a publicly held holding company with a controlling interest in, Gerdau S.A. He is also, a Board member of Gerdau S.A., and Metalúrgica Gerdau S.A., and the Chairman of the Board of Directors of Seiva S.A. — Florestas e Indústrias, a company that is part of Gerdau’s business group. In addition, he serves as a Board member of Instituto Aço Brasil and Juntos Somos Mais.

Education: Ms. Ramirez holds a bachelor’s degree in Chemical Engineering from the Polytechnic School of the University of São Paulo (USP) and an MBA degree from Harvard Business School (United States).

Professional Experience: She worked at Latam Airlines Brasil from 2011 through 2019 and, in the last five years of this period, she served as CEO at Latam Airlines Brasil and Vice-President of Customers at the Latam Airlines Group. She currently holds the positions of Board member of Gerdau S.A. Metalúrgica Gerdau S.A., a publicly held holding company with a controlling interest in Gerdau S.A.; Embraer S.A.; Holcim (Switzerland); Telefonica (Spain). In addition, she serves at the boards of non-profit organizations such as Amigos do Bem, Hospital Israelita Albert Einstein, and Gastromotiva.

Education: Mr. Fernandes holds a bachelor’s degree in Mechanical and Production Engineering from the Polytechnic School of the University of São Paulo – USP (1986).

Professional Experience: He started his career in the financial market in 1986. He served as a Commercial Officer at Crédit Commercial de France (1989–1997); a Commercial Officer at Lloyds Bank (1997–1999); and an Executive Vice-President at Itaú BBA (1999–2019). He currently holds the positions of (i) Board member of Gerdau S.A.; (ii) Board member of Metalúrgica Gerdau S.A., a publicly held holding company with a controlling interest in Gerdau S.A.; (iii) Senior Advisor at Morgan Stanley Brazil; (iv) Board member of Direcional Engenharia (DIRR3) and JHSF (JHSF3); (v) Board member of COPERSUCAR S.A.; (vi) Chairman of the Board of Directors of Fulwood Logistica; (vii ) Senior Financial Advisor at Bracell Brasil Cia de Papel e Celulose; (viii) Board member of CIVI-CO Hub de Impacto Social; and (ix) Executive Director of Museu de Arte de São Paulo (MASP).

Fiscal Council

Education: Mr. Monticelli holds a bachelor’s degree in Accounting from Faculdade Porto-Alegrense de Ciências Contábeis e Administrativas and a graduate degree in Business Management from Fundação Getulio Vargas.

Professional Experience: He was an Accounting Assistant at Mundial S.A. (1979–1991); a Technical Advisor for Accounting Information Management at Gerdau (1991–2006); a Technical Advisor for Planning and Strategy Management at Gerdau (2007–2008), an Accounting Professor at Faculdade São Judas Tadeu in Porto Alegre (2008–2014 ); an Investor Relations Technical Advisor at Gerdau (2008–2018); a Financial Advisor in projects to reduce the cost of compliance for publicly held companies at the Brazilian Association of Publicly Held Companies – Associação Brasileira de Companhias Abertas, ABRASCA (2018–2019); and a, Financial, Advisor and Partner at Kienbaum Porto Alegre (2020–2021). He is currently an Accounting Professor in undergraduate and graduate programs of Faculdade Dom Bosco in Porto Alegre; a sitting member of the Fiscal Council of Randon S.A. Implementos e Participações and the Lojas Renner Institute; an alternate member of the Fiscal Council, of Metalúrgica Gerdau S.A., Sanepar, and NGO Parceiros Voluntários, a member of the Board of Directors of at Casa do Menino Jesus de Praga, a -third sector institution, and a facilitator of Accounting/ Financial Education programs at the Cambridge Family Enterprise Group.

Education: Holds a degree in Business Administration from the Federal University of Rio Grande do Sul (UFRGS) and a degree in Accounting from the University of Vale do Rio dos Sinos (Unisinos).

Professional Experience: He has experience at PwC in both Brazil and the United Kingdom, where he worked for 14 years in auditing publicly traded and multinational companies across various sectors. During this time, he had exposure to boards of directors, audit committees, and fiscal councils, and also worked with internal controls, corporate governance, and financial statements prepared in accordance with IFRS and Brazilian GAAP (BR GAAP). He also worked at Yara Brazil from December 2016 to September 2023, holding, among other roles, the positions of Finance Director of Performance and FP&A, with responsibilities for corporate performance and financial planning, and Controller Director, focusing on performance reporting, accounting, tax, and support for M&A operations. He is currently the Finance Director and CFO of Yokohama TWS South America, where he is responsible for financial and governance areas, with emphasis on performance management and strategic planning.

Education: Holds a Law degree from the University of São Paulo (USP) and an LL.M. from the University of Pennsylvania.

Professional Experience: Has over 15 years of experience at the intersection of law, data, and technology, with a focus on solution development, innovation, and business strategy. Founder and manager of Digesto Pesquisa e Banco de Dados, later acquired by Jusbrasil, where he served as CEO of the Enterprise Products Division for three years. Previously worked as a lawyer at Machado Meyer, was a founding partner at Camargo Sociedade de Advogados, and an international associate at Milbank LLP. He also served as a member of the Fiscal Council of Klabin.

Education: Mr. Alves holds a bachelor’s degree in Economics from PUC–SP; a graduate degree in Financial Management from Fundação Getulio Vargas; a master’s degree in Finance and Investments from EAESP–FGV; a Governance, Risk, and Compliance certificate from the Risk University — KPMG; a Portfolio Manager certificate from CVM; and a professional certification from ANBIMA (CGA). In addition, he took an Audit Committee course held by the IBGC.

Professional Experience:He worked in the financial market, as an Investment Officer, Equity Portfolio Manager, Investment Analyst, and Credit Analyst at Bradesco Asset Management (BRAM), ABN AMRO Bank, Unibanco, and Banco Bozzano Simonsen, and in the administrative and financial area at Vila Carrão, a bus company. He was a Board member of the Value and Liquidity Fund of Bradesco Templeton (1998–2001), a board member of GP’s Technology Private Equity Fund (2001–2005), a member of the Fiscal Council of Gerdau S.A. (2017–2018), a member of the Fiscal Council of Grupo Fleury and Ecorodovias (2018–2019), an alternate member of the Fiscal Council of 2bcapital’s Private Equity Fund (2013–2019), and a Partner at Araxá Investimentos (2015–2016). He currently holds the positions of member of the Board of Directors of Tim Brasil and Marfrig Brasil Foods; member of the Fiscal Council of Cielo, Grendene, Metalúrgica Gerdau; alternate member of the Fiscal Council of Gerdau S.A.; and Partner at Barigui Gestão de Recursos.

Education: Holds a degree in Engineering from the State University of Campinas (UNICAMP), an MBA from FIA USP, and both a Master’s and Ph.D. from FEA USP, with a focus on innovation and sustainability in industrial value chains.

Professional Experience: Has extensive experience in operations, built through roles at McKinsey & Company, Kearney, Avon, and Mars, in addition to being the founder of Gati Consultoria em Gestão e Governança, an affiliate of the Shingo Institute in Brazil, where she leads Organizational Transformation projects. She also has experience across the end-to-end production, supply chain, procurement, and innovation processes, as well as in retail, direct sales, and other sales channels, both in Brazil and internationally, having lived and worked in various locations. She served as an Advisory Board Member at Aliança Metalúrgica and Coordinator of the Innovation Committee (2022–2024), and as an Advisory Board Member at Hidrolight do Brasil (2023–2024). She currently serves as: (i) Executive mentor and Professor at the Board Member Program at Fundação Dom Cabral (FDC); (ii) Chairwoman of the Board and founder of the Instituto Mulheres em Operações (MEO); (iii) Member of the Board of Directors of Pérola (established by Nutrien from Canada, Ultrabulk from Denmark, and Eurobrás from Brazil); (iv) Member of the Board of Directors of Pettenati S.A.; (v) Full member of the Fiscal Council of Metalúrgica Gerdau S.A.; and (vi) Member of the Advisory Board of Food Brands (Kisabor).

Education: Holds a Bachelor’s, Master’s, and Ph.D. in Law from the University of São Paulo; LL.M. and JSD candidate (ABD) from Columbia Law School.

Professional Experience: Has experience in Capital Markets, Finance, Economic Law, Regulatory Law, Antitrust, and International Trade. Works on topics such as financial markets, securities and derivatives, banking and corporate law, regulation, antitrust, and law and economics, as well as areas related to international finance and multilateral organizations such as the IMF, World Bank (IBRD), and WTO, and regulations from entities such as the SEC, CVM, the Federal Reserve (FED), and the Central Bank. In addition to other roles, currently serves as: (i) Partner at CMSquare Assessoria e Consultoria Ltda.; (ii) Partner at Hexa64 Tecnologia Ltda.; (iii) Legal Director at OranjBTC S.A. – Education and Investment; (iv) Member of the Fiscal Council of Klabin S.A.; and (v) Director of the Columbia Alumni Association.

Board Officers

Education: Mr. da Cunha holds a bachelor’s degree in Mechanical Engineering from the Federal University of Minas Gerais (UFMG — Brazil), an MBA degree in Project Management from Fundação Getulio Vargas (Brazil), an MBA in General Business Administration from INSPER Business School (Brazil), a certificate in Leading Change and Organizational Renewal from the Harvard Business School (United States), and a certificate in Advanced Corporate Finance from the London Business School (UK).

Education: Mr. Japur holds a bachelor’s degree in Business Administration and a graduate degree in Economics from the Federal University of Rio Grande do Sul (UFRGS — Brazil).

Professional Experience: Mr. Japur started his career at Gerdau in 2005 as an intern in the Planning area. In 2006, he participated in a trainee program held by the Planning and Management department. In 2015, he was promoted to Business Development Manager. In addition, a year later, he took charge of the debt and capital market management process in the Financial department. In 2018, he assumed the position of Planning, IT & Innovation Manager at Gerdau Diaco and Gerdau Metaldom, in Colombia. In 2020, he returned to Brazil to serve as General Manager in the Financial Operations department. He currently holds the position of Executive Vice-President of Finance and CFO and is, responsible for the Finance, Accounting, and Tax departments. He is also an Investor Relations Officer at Gerdau S.A., Metalúrgica Gerdau S.A., and Seiva S.A. – — Florestas e Indústrias, ; a Vice-President of Gerdau S.A. and Metalúrgica Gerdau S.A.; and a Board Member of Seiva S.A. — Florestas e Indústrias.

Education: Mr. Wahrhaftig holds a bachelor’s degree in Mechanical Engineering from the Federal University of Paraná (UFPR), an MBA from the Manchester Business School (UK) and has studieda graduate degree in Corporate Finance from ISAE/ FGV.

Professional Experience: He has 27 years of professional experience, 19 of which at Gerdau. In recent years, he has served as Commercial Officer at Gerdau Aços Especiais; Corporate Commercial Officer; Commercial Officer at Comercial da Gerdau Aços Brasil; and Vice -President of the operations in Brazil, Argentina, and Uruguay. In addition, he is a member of the Board of Directors of Instituto Aço Brasil, where he also served as Charmain for the 2021–22 period. He was a member of the FIESP/ Consic N — Construction Sector Council; a Board member of the Brazilian Association of the Construction Materials Industry – (Associação Brasileira dos Fabricantes de Materiais de Construção, ABRAMAT); member of the Strategy Council of the Federation of Minas Gerais’ Industries (Federação das Indústrias do Estado Minas Gerais, FIEMG); Vice-Chairman of the Board of Directors of the Brazilian Metallurgy, Materials and, Mining Association (Associação Brasileira de Metalurgia, Materiais e Mineração;o, ABM); and a board member of the Latin American Steel Association ( Asociación Latinoamericana del Acero, Alacero). He currently holds the position of Vice-President of Strategy at Gerdau.

Education: He holds a degree in Mechanical Engineering from the Federal University of São João Del Rei (UFSJ, 2003) and Executive MBA form Fundação Dom Cabral (FDC, 2014).

Professional Experience: He has 22 years of experience in leading industrial operations and implementing capital projects in steelmaking and mining. Served as Industrial Director responsible for operations at the Ouro Branco Mill (2020-2023), Director of Ouro Branco and Engineering Brazil (2023-2024) and Corporate Director of Industrial, Engineering and HSE (2024-2025).

Education: Mr. Peres holds a degree in Business Administration from Faculdade de Ciências Econômicas, Contábeis e Administração Prof. de Plácido e Silva, in the city of Curitiba-PR, and a graduate degree in Business Administration from Universidade Presbiteriana Mackenzie, in São Paulo-SP.

Professional Experience: He has worked at Gerdau for over 38 years. He served as a Sales and Marketing Manager at the Gerdau operation in Mexico (2010–2012) and as a Sales and Marketing General Manager at the Gerdau operation in Colombia (2013–2014), where he was later promoted to Chief Executive Officer and remained until late 2016. He currently holds the position of Commercial Officer at the Gerdau Aços Brasil (GAB) division.

Education: She holds a Bachelor’s degree in Chemical Engineering from Universidade Federal do Rio de Janeiro, an MBA in Business Management from the Fundação Getúlio Vargas, and an MBA in Finance from IBMEC.

Professional Experience: She worked at Shell as the Purchasing Manager for Operations in South America (2004-2007), and as the Corporate Purchasing Manager for the Latin America region (2007-2011). She also worked at Vale as the Global Purchasing Manager (2011-2018), General Manager of Global Purchasing (2018-2021), and in Strategy, New Business, and Management of Renewable Energy Assets (2021). She was a Full Member of the Board of Directors of Aliança Geração and Consórcios de Energia (2021-2022). Currently, she is (i) the Global Supply Director at Gerdau S.A. and (ii) a Member and President of the Board of DFESA (Usina Hidrelétrica de Dona Francisca).

Education:Mr. da Silva holds a bachelor’s degree in Metallurgical Engineering from the Federal University of Minas Gerais (Brazil, 1998), MBAs in Business Management from the Erasmus University in Rotterdam (Netherlands, 2004) and Fundação Dom Cabral (Brazil , 2009) and a graduate degree in Marketing from the Federal University of Minas Gerais (Brazil, 2002).

Professional Experience: He has 25 years of professional experience, 11 of which at Gerdau, where he served as a General Commercial Manager, a General Commercial and Logistics Manager, a General Industrial Manager, and an Executive Manager, all in the Mining area. He currently holds the positions of Mining & Raw Materials Officer of the Company, Board member at MRS, and Mmember of World Steel Association’s Raw Materials Committee.

Education: Holds a degree in Computer Science from UNIFACS, an MBA in Project Management from Fundação Getulio Vargas (FGV), and specializations in Computer Networks and Exponential Innovation. He has also completed additional programs in Generative AI at MIT and Leadership at the Center for Creative Leadership.

Professional Experience: Has been with Gerdau since 1999, holding several strategic positions, including IT Manager and Head of the Silicon Valley office, where he drove startup initiatives and innovation. He currently serves as Global IT Director.