Mr. Rosado has been our Chief Executive Officer since January 2022. He has more than 16 years of experience in the metals and mining industry, and extensive board experience in different countries. Mr. Rosado led the initial public offering of Hochschild Mining Plc, and its acquisition strategy on Canadian Mining Assets. He also led the reorganization and transformation of Volcan Compañia Minera S.A.A. (“Volcan”) which included the construction of two new polymetallic mines and the issuance of bonds for more than US$1 billion. Prior to joining Nexa Resources, Mr. Rosado was the CEO of Volcan since 2014 and its Deputy CEO since 2010. Prior to Volcan, he served as Director and Chief Financial Officer at Hochschild Mining Plc. since 2005 and as a Senior Project Manager at McKinsey & Company since 2000. During his career, he also served on the board of directors of Lake Shore Gold Corp., Zincore Metals, Cordoba Minerals, and Kaizen Discovery. Mr. Rosado graduated with a degree in Economics in 1992 from Universidad del Pacifico and an MBA from the Ross School of Business, University of Michigan in 2000.
Mr. del Valle has been our Senior Vice President of Finance and Group Chief Financial Officer since October 2022, and he also serves as Chief Executive Officer of Nexa Peru since November 2022. He has extensive knowledge of the metals and mining industry and more than 25 years of experience in finance and planning. Mr. del Valle joined us after spending nine years as CFO at Compañía Minera Antamina, where he led a successful company-wide transformation program and a US$1 billion syndicated loan financing initiative, among other key efforts. Before Antamina, he was the CFO of Volcan Compañía Minera and he held various leadership positions at well-known companies, including McKinsey & Company, Standard Chartered Bank, and Wells Fargo Bank, among others. Mr. del Valle holds a Business Administration degree from California State University, as well as an MBA from The Wharton School. He also graduated from the Advanced Management Program at Harvard Business School.
Mr. Belther has been our Senior Vice President of Technical Services & Business Development since October 2024. Prior to this role, he served as Senior Vice President of Mineral Exploration & Business Development since 2014. He has over 28 years of experience in the area. He held the same position at Votorantim Metais S.A. between 2004 and 2014. Prior to joining us, he was country manager at Vale in Peru between 2002 and 2004. He has worked in Brazil and abroad in companies such as Rio Tinto Brasil, Golden Star Resources, in Suriname, Phelps Dodge in Brazil and Chile, Vale in Brazil and Peru, and other companies. Mr. Belther graduated with a degree in Geology in 1991 from the São Paulo State University, UNESP, in Brazil, where he also obtained a Master’s degree in 2000 in Mineral Exploration.
Mr. Coelho has been our Senior Vice President of Mining Operations since 2017. Mr. Coelho has over 20 years of experience managing mining operations with focus at gold and zinc. Prior to joining us, Mr. Coelho worked for Anglo Gold Ashanti Ltd. for 15 years, where he initiated his career as a Trainee. In Anglo Gold Ashanti Ltd., Mr. Coelho has led mining operations and the expansion of mining projects and served as General Manager of the Cuiabá and Lamego complexes as his last position at this company. Mr. Coelho graduated with a degree in Mine Engineering in 2001 from the Federal University of the State of Minas Gerais (“UFMG”) and has obtained graduate degrees from the Kellogg Graduate School of Management in 2015 in the United States, the Dom Cabral Foundation in 2009 in Brazil and the University of Cape Town in 2005 in South Africa as well as a qualification at INSEAD in digital transformation in 2018 and MIT in 2019.
Mr. Hilario became our Vice President of Human Resources and Corporate Affairs in April 2025. With over 25 years of experience in people management, he has built his career in leadership roles at major companies in the mining, steel, and forestry sectors, with an international track record across multiple countries, including Brazil, the United States, Argentina, and Trinidad and Tobago. Prior to joining, he served as Executive Director of Human Resources at Anglo American and held several senior leadership positions at ArcelorMittal. Throughout his career, he has led initiatives focused on cultural transformation, leadership development, labor relations, health, safety, and the environment, in addition to experience in social management and institutional relations. He holds degrees in Psychology and Business Administration, a PhD in Business Administration from Pontificia Universidad Católica Argentina, and a Master’s in Business Administration from Fundação Getulio Vargas (FGV).
Ms. Penna has been our Vice President of Legal & Governance since April 2023. Ms. Penna joined us as Chief Legal Counsel and Head of Governance in 2017. With more than 20 years of experience, Ms. Penna has focused on M&A, project finance and capital market transactions and she served as counsel and project manager on our initial public offering in October 2017. As of 2024, she also serves as a member of the board of directors of FUNSEJEM and as of May 2025 she serves as a member of the board of directors of Instituto Votorantim. Prior to Nexa, she led LATAM, M&A and Finance divisions within the Legal Department of Votorantim Cimentos for six years, as well as worked for law firms such as Linklaters, Lobo & de Rizzo and Barbosa Mussnich & Aragão Advogados. Ms. Penna has a Bachelor from Pontifícia Universidade Católica de São Paulo and a Master of Law Degree (LL.M.) from the University of Chicago Law School, an Executive MBA from Instituto de Ensino e Pesquisa (“INSPER”), completed an Executive Education Program on Women on Board from Harvard Business School and a qualification at INSEAD in Transition to General Management.
Mr. Almeida has been with Nexa since 2017 and was recently appointed as Projects, Engineering, and Energy Officer. He brings over 20 years of experience in the Automotive, Steel, and Mining Industries. Throughout his career, Mr. Almeida has held various roles focused on Engineering Development, Construction, Capital Projects, Portfolio Management, and Project Management Office. He has worked for well-known companies such as Fiat Powertrain Technologies, ArcelorMittal Long Carbon Americas, Anglo American Nickel, Niobium and Phosphates, and CMOC, where he had the opportunity to collaborate with different cultures and contribute to important strategic business growth initiatives. Mr. Almeida holds a degree in Mechatronic Engineer from PUC Minas and a postgraduate degree in Project Management from IBMEC Business School.
Mr. Demuner has been our Smelting Operations Officer since January 2025, bringing over 22 years of experience in zinc smelting operations. He joined Nexa (formerly Votorantim Metais S.A.) in 2003, holding various leadership roles in operations and corporate areas in Brazil and Peru. Prior to his current position, he served as the General Manager of the Cajamarquilla Smelter and as Corporate General Manager of Smelting Operations and Development. He graduated in Metallurgical Engineering from the Federal University of Ouro Preto (“UFOP”) in 2002. Additionally, he holds multiple qualifications, including an MBA from Fundação Getúlio Vargas (“FGV”), a Leadership Course from Harvard University, an Executive Development Program at Fundação Don Cabral (“FDC”) and Kellogg School of Management. He also completed international specializations in Corporate Finance from ESAN Graduate School of Business and Mining Business Management from Universidad del Pacifico, both in Peru.
Ms. Moreira has been a member of our Leadership Team since October 2023. She brings over 20 years of leadership experience in building and managing Corporate Governance, Internal Controls, Risks and Internal Audit, Crisis Management and Compliance functions. Neuma has extensive experience in the mining industry, collaborating with companies involved in Iron Ore, Nickel, Phosphates, Niobium, and Copper. She has also worked across various cultures and regions, including Europe, South Africa, Chile, Peru, Australia, and the United States, with experience at the Board level. Before joining Nexa, Neuma led Anglo American Brazil’s Governance, Internal Controls, Risks & Crisis Management, and Compliance division for 10 years, reporting directly to the CEO. From April 2022 to October 2023, she served as board member of the Fiscal Council for Fundambras, representing Anglo American. She has also held key roles at Ferrous Resources and Fir Capital / DJF Fund and has been a graduate and postgraduate professor at the Anima Group, teaching subjects such as calculation, statistics, internal audit, and corporate governance. Neuma holds a Bachelor’s degree in IT and Business from PUC Minas and SEBRAE, a postgraduate degree in Business and Finance from IBMEC Business School, and a postgraduation in Data Privacy from Fundação Dom Cabral. She is certified as Leader Auditor in Antibribery System by RINA, a certified Board Director and Governance Officer by the Brazilian Institute of Corporate Governance and earned a Master’s degree in Math and Computer Modelling from the Federal Centre of Technological Education of Minas Gerais in December 2013. She is also currently pursuing a Master’s in Compliance from IMF Business School. In 2020, Neuma was recognized as one of the Top 100 Global Inspirational Women in Mining by Women in Mining UK.
Ms. Aita has been our Commercial Officer since May 2026, bringing 15 years of extensive experience in global markets, complex contract negotiations, and logistics optimization within the mining sector. In this role, she leads the Company’s commercial strategy across concentrates, metals, by-products, and logistics. Ms. Aita joined Nexa in 2022 as Commercial General Manager, where she played a pivotal role in strengthening commercial performance and building long-term relationships with strategic clients and suppliers. Prior to Nexa, Ms. Aita spent 11 years at Volcan Compañía Minera S.A.A., in Peru, where she served as Commercial Manager and developed extensive expertise in concentrates and silver dore commercialization, logistics, and hedging. During her tenure, she was actively involved in the integration process following the merger with Glencore International. Ms. Aita holds a bachelor’s degree in International Business from the University of Lima, in Peru.