盖尔道 GGB

Mr. Mauricio Metz, Education: Degree in Mechanical Engineering from the Federal University of Rio Grande do Sul (UFRGS), Master's in Metallurgical Engineering from the Federal University of Rio Grande do Sul (UFRGS), and MBA in Administration from the Institute of Education and Research (INSPER). Professional Experience: : Has 23 years of experience at Gerdau, leading various production areas throughout his career. He served as Executive Industrial Manager, later as Industrial Director, responsible for all Gerdau Mini Mills units in Brazil (2017 - 2022), and Corporate Director of Industrial, Engineering, and EHS (2022 - 2024). Currently, he is Vice President of Steel Operations Brazil

Alberto Fernandes, Director. Education: Degree in Mechanical and Production Engineering from the Polytechnic School of the Universidade de Sao Paulo - USP (1986). . Professional Experience: He started his career in the financial market in 1986. He worked as Commercial Director at Credit Commercial at France Bank (1989-1997), Commercial Director at Lloyds Bank (1997-1999) and Executive Vice President of Itau/BBA (1999-2019). Currently (i) Board Member at Gerdau S.A. and (ii) Board Member at Metalurgica Gerdau S.A., a listed company, holding company at Gerdau S.A., (iii) Senior Advisor at Morgan Stanley Brazil, (iv) Member of the Board at Direcional Engenharia (DIRR3) and JHSF (JHSF3), (v) Chairman of the Board at Fulwood Logistica, (vi ) Member of the Board at CIVI-CO Social Impact Hub and (vii) Board Member of the Museu de Arte de Sao Paulo (MASP).

Mr. Rafael Gamboa Lopes was elected Executive Vice-President on February 23, 2026. Education: Degree in Mechanical Engineering from the Federal University of Sao Joao Del Rei (UFSJ, 2003) and Executive MBA form Fundacao Dom Cabral (FDC, 2014). Professional Experience: 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). Currently, ha is Executive Vise President of Special Steel Brazil business unit.

Rafael Dorneles Japur, Education: Bachelor's degree in Business Administration and Graduate in Economics from UFRGS. . Professional Experience: Has started his career at Gerdau in 2005 as an intern in the Planning area. In 2006, he participated in the trainee program in the Planning and Management department. In 2015, he was promoted to Business Development Manager and, a year later, he became the leader 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 as General Manager in the Financial Operations department. He currently holds the position of (i) Executive Vice President of Finance and CFO, responsible for Finance, Accounting and Tax departments. He is also an (ii) Investor Relations Officer at the companies Gerdau SA, Metalurgica Gerdau SA and Seiva SA - Florestas e Industrias, (iii) Vice President Director of Gerdau SA and Metalurgica Gerdau SA and Director of Seiva SA - Florestas e Indust

Wendel Gomes da Silva, Education: Graduated in Metallurgical Engineering from the Universidade Federal de Minas Gerais (Brasil, 1998), completed his academic training with MBA courses in Business Management at Erasmus University in Rotterdam (Netherlands, 2004), MBA in Business Management at Fundacao Dom Cabral (Brasil, 2009) and Specialization in Marketing from the Universidade Federal de Minas Gerais (Brasil, 2002). Professional Experience: He has 28 years of professional experience, including 14 years of experience at Gerdau, where he held in the Mining area the positions of General Commercial Manager, General Commercial and Logistics Manager, General Industrial Manager and Executive Manager. Currently he is Director of Mining and Raw Materials at the Company, (ii) Board Member of the MRS and (iii) Chairman of the Raw Materials Committee of the World Steel Association.

Claudia Sender Ramirez, Education: Degree in Chemical Engineering from the Polytechnic School at the University of Sao Paulo (USP) and an MBA from Harvard Business School. . Professional Experience: Participated in Latam Airlines Brasil (2011-2019) where the last 5 years she served as CEO of Latam Airlines Brasil and Vice President of Clients of the Latam Airlines Group. Currently is (i) Board Member of Gerdau S.A., (ii) Board Member of Embraer S.A., (iii) Board Member of Holcim (Switzerland) and (iv) Board Member of Telefonica (Spain). Also serves on the boards of NGOs such as: Amigos do Bem, Hospital Israelita Albert Einstein and Ensina Brasil.

Gustavo Werneck da Cunha, Education: Degree in Mechanical Engineering from the Universidade Federal de Minas Gerais (UFMG - Brazil). Studied Project Management at Fundacao Getulio Vargas (Brazil), General Business Administration at INSPER Business School (Brazil), Leading Change and Organizational Renewal at Harvard Business School (United States) and Advanced Corporate Finance at London Business School (UK). . Professional Experience: He has worked at Gerdau for 20 years. He held the positions of Executive Officer of Gerdau Long and Flat Steel Brazil, Industrial Officer of Gerdau India, Gerdau Corporate Officer of Information Technology (CIO). Currently, he is (i) Chief Executive Officer (CEO) of Gerdau S.A. since January 2018, (ii) Chief Executive Officer (CEO) of Metalurgica Gerdau S.A., since January 2018, (iii) Board Member of Gerdau S.A., (iv) Board Member of Metalurgica Gerdau S.A., and (v) Board Chairman of Seiva S.A. - Florestas e Industrias, a company that is part of Gerdau's economic group. He also serves as Board Member of the Instituto Aco Brasil (Brazilian Steel Institute) and Juntos Somos Mais.

Cesar Obino da Rosa Peres, Education: Graduated in Business Administration from the Faculdade de Ciencias Economicas, Contabeis e Administracao Prof. de Placido e Silva in Curitiba-PR, he has completed his academic training with a specialization course in Business Administration at Universidade Presbiteriana MACKENZIE in Sao Paulo-SP. . Professional Experience: Has more than 41 years of experience at Gerdau. He held the position of Sales and Marketing Manager at the Gerdau operation in Mexico (2010-2012). In addition, held the position of Sales and Marketing General Manager at the Gerdau operation in Colombia (2013-2014), later was promoted to Executive Director of Gerdau Colombia Operation where he remained until the end of 2016. Currently holds Corporate Commercial Director of Gerdau S A and Board Member of Instituto Aco Brasil.

Mr. Claudio Gerdau Johannpeter, Education: Degree in Metallurgical Engineering from the Universidade Federal do Rio Grande do Sul (UFRGS). He completed courses in Operations Managemet at University of London (Canada), Executive Development at Penn State (United States) and Advanced Management Program at Harvard (United States). Professional Experience: Has 43 years of experience at Gerdau and held the position of Chief Operating Officer (COO) (2017-2012). In December 2017, he left his executive position at Executive Committee representing the Brazil Long Steel Business Operation and the Global Processes: Engineering and Industrial, Health and Safety. Was the Board Chairman of Gerdau S.A. (2015-2020), and Board Chairman of Metalurgica Gerdau SA (2016-2020), a listed company, holding company of Gerdau S.A. Currently is (i) Vice Chairman of the Board of Directors of Gerdau SA, and member of its advisory committees and (ii) Vice Chairman of the Board of Directors at Metalurgica Gerdau SA, a listed company, holding company of Gerdau S.A.

Andre Bier Gerdau Johannpeter, Education: Degree in Business Administration from the Pontifica Universidade Catolica 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 43 years of experience at Gerdau and held the position of Chief Executive Officer (CEO) (2007-2017). He was President of the World Steel 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 of Metalurgica Gerdau SA, a listed company, holding company of Gerdau S.A., (iii) Board member of the Executive Committee of the World Steel association, (iv) President of Instituto Aco Brasil (Brazilian Steel Institute), (v) Board Member of Alacero (Latin American Steel Association), (vi) Vice Chairman of the Federation of Industries of Sao Paulo - FIESP, (vii) Vice Chairman of the Federation of Industries of Rio Grande do Sul - FIERGS, (viii) Board Member of Transforma RS and (ix) Board Member of Instituto Caldeira.

Education: Degree in Chemical Engineering from the Universidade Federal do Rio de Janeiro with an MBA in Business Management from Fundacao Getulio Vargas and an MBA in Finance from IBMEC. . Professional Experience: Worked at Shell as Procurement Manager Operations South America (2004-2007), Corporate Procurement Manager for Latin America Region (2007-2011). She also worked at Vale as Global Procurement Manager (2011-2018), Global Procurement General Manager (2018-2021), Strategy, New Businesses and Management of Renewable Energy Assets (2021), Member of the Board of Directors at Alianca Geracao e de Consorcios de Energia (2021-2022). Currently (i) Head of Global Procurement and Energy at Gerdau S.A.

Mr. Carlos Eduardo Vieira da Silva, . Education: Degree in Mechanical Engineering from the Federal University of Minas Gerais (UFMG), MBA in Finance from the Brazilian Institute of Capital Markets (IBMEC), and MBA in Business Administration and Management from the Institute of Education and Research (INSPER). . Professional Experience: Has 26 years of experience at Gerdau, holding positions in recent years such as Regional Manager of Raw Materials (2010 - 2015), Executive Manager at Gerdau Florestal (2015 - 2018), Executive Manager of Metals and Forestry (2018 - 2020), and Director of Metals and Forestry (2020 - 2024). Was a Member of the Deliberative Council of the Minas Gerais Association of the Forestry Industry - AMIF (2015 - 2018) and Member of Deliberative Council of the Brazilian Tree Industry - IBA (2015 - 2024). Currently, he is (i) the Commercial Director at Gerdau.

Marcos Eduardo Faraco Wahrhaftig, Education: Degree in Mechanical Engineering from the Federal University of Parana (UFPR), with a MBA from the Manchester Business School (UK) and has studied Corporate Finance at ISAE/ FGV. . Professional Experience: 31 years of experience, with 23 years in Gerdau. In the last years he has held positions as Commercial Officer of Special Steel, Corporate Commercial Officer, Commercial Officer of Gerdau Acos Brasil and Executive Vice - President - Brazil, Argentina and Uruguay. Also he was the Chairman of the Board of the Instituto Aco Brasil (Brazilian Steel Institute) in 2021/22. He was Board member of FIESP/ Concic Conselho Superior da Construcao Civil; Board Member of ABRAMAT - Associacao Brasileira dos Fabricantes de Materiais de Construcao; (iii) Board Member of FIEMG (Federacao das Industrias do Estado Minas Gerais) - Strategic Council; (iv) Board member of ABM - Associacao Brasileira de Metalurgia, Materiais e Mineracao and (v) Board Member of Alacero (Associacao Latino - americana do Aco). Currently holds the position of Executive Vice President of Strategy.

Guilherme Chagas Gerdau Johannpeter, . Education: Degree in Law from Unisinos in 1995 and holds an MBA from the Kellogg School of Management, Illinois, USA. Professional Experience: Has 40 years of experience at Gerdau and held the position of Executive Vice President in the Executive Committee Gerdau (CEG in Portuguese), coordinating the Special Steels Business Operation, Latin America Business Operation and the Actions arising from the Gerdau Project 2022 - Strategy (2014-2017). Currently is (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 Metalurgica Gerdau S.A. publicly traded company, holding company of Gerdau S.A., (iii) Board Member of the Gerdau Institute, (iv) President of IEDI - Institute for Studies in Industrial Development; (v) Member of National Council for Industrial Development (CNDI) (vi) Board Member of the Superior Economic Council (COSEC) of FIESP (Federation of Industries o the State of Sao Paulo and (vii) Member of the Board of GAB - Global Advisory Board of Northwestern Kellogg.