Management, Boards & Committees

Mr. Chammas was graduated in Aeronautical Infrastructure Engineering in ITA in 1988. He started his career in Rhodia, working in Brasil and France until 2002. He took on a new challenge in Brasken, when remained 11 years, having been Vice President in the Polymers and Basic Petrochemicals Division. After that, he was CEO in Bioserv-Louis Dreyfus Group, between 2013 and 2018, when assumed as CEO on STERLITE POWER BRASIL. He is postgraduate in Management by FGV and specialization courses in MIT and IMD.

Silvia Diniz Wada has a degree in economics from the University of São Paulo and an MBA in Finance from Ibmec. She has worked for more than 10 years in Mergers and Acquisitions at companies such as Deloitte, Hirashima & Associados and Grupo EDP, where she was Head of M&A and director of the Solar and Services Business Unit. She joined ISA CTEEP on 09/22/2020 as Chief Strategy and Business Development Officer and, since 06/04/2024, has held the position of Chief Financial, Investor Relations and Business Development Officer.

Dayron has a degree in electrical engineering and a specialization from the Universidad Pontificia Bolivariana. He started his career as a Design Engineer at Mejia Villegas S/A, assuming in 2000 the position of Engineer at Alston Transmissão. Subsequently, he started his activities in the ISA Group acting in several positions. In 2008 he took over Projects Management, taking over Execution and Projects Management in 2009. In 2012, he had the opportunity to act as Infrastructure Projects Officer in Peru, by PDI, a subsidiary of the Group, arriving in 2014 to the position of Corporate Projects Officer at ISA.

Cláudio Hernan Domingorena has a degree from the Universidad de Belgrano (Buenos Aires), a post-graduate degree in Engineering Valuation and Expertise from FAAP and an MBA in the Electricity Sector from FGV. He has worked for more than 23 years in the areas of Asset and Economic Valuation Engineering, Asset Management and Electricity Sector Regulation, having worked for Levin Argentina and Levin do Brasil and AES Eletropaulo. In 2018 he joined ISA CTEEP as Regulation Management Manager, and in 2023 he took up the position of Regulation Management, Fixed Assets and Real Estate Director, being elected on June 4, 2024 as Chief Strategy and Business Development Officer.

Bruno Isolani is an Electrical Engineer with a specialization in Electrical Systems Protection from Unicamp, an Executive MBA in Administration and Business in the Electrical Sector from FGV and a postgraduate degree in Leadership and Strategic People Management from FIA. He began his career as an intern at ISA CTEEP, working as an Engineer and Planning Coordinator. He later joined Neoenergia, in 2019, in the position of Operations Manager. He returned to ISA CTEEP in 2021 as Maintenance Manager, assuming, in 2022, the position of Operations Manager. Since 10/08/2024 he has held the position of Executive Director of Operations.

Colombian, electrical engineer graduated from the Polytechnic Institute of Belarus, with a Masters in Engineering from the same Institute and Masters in Business Administration from EAFIT University. He has been linked to Interconexión Eléctrica SA ESP – ISA since 1998 and, since 2019, he has been responsible for ISA's Power Transmission business in Chile. Already acting as General Manager of ISA INTERCHILE, he contributed to the strengthening of ISA's presence in the southern country, guaranteeing operations and promoting sustainable growth. Previously, he served as Director of Corporate Operations at ISA, a position for which he was responsible for coordinating the operations of ISA's power transmission network in Latin America. In his 25-year experience at ISA, he also highlights his journey through all levels of the Power Transmission business in his role as Operations Engineer, Operations Director, Maintenance Director, Deputy Maintenance Manager and Technical Assistant Manager.

Colombian, born on July 30, 1956. He has a degree in electrical engineering from Universidade Nacional de Colômbia with specialization in Quality Management from the Universidad EAFIT and a Master’s Degree in Operational Research from Strathclyde University, Scotland - UK in 1987. He was manager for Corporate Strategy at ISA – Interconexión Eléctrica S.A.E.S.P., where he coordinated strategic activities in term and positioning, growth and new businesses.

He was Chief Executive Officer of the Company from 2009 to November 2013. Since November 2013, he has been Vice President -Energy Transmission and responsible for the corporate areas of Projects, Operations, Engineering and Supply for Interconexión Electrica S.A. (ISA), the Company’s controlling holding company. Currently he is also a member of the Board of Directors of the Company, Transelca S.A.E.S.P., an energy transmission company, Intercolombia S.A.E.S.P., Red de Energía del Peru S.A, Consorcio Transmantaro S.A., ISA Perú S.A., Interchile S.A., Isa Capital do Brasil S.A. and Interconexión Eléctrica Colombia-Panamá, S.A., a bi-national construction company and the operator of the electricity link between Panamá and Colombia. In 2021, Cesar obtained the International Board of Directors certificate, granted by the Institute of Directors of London (UK).

Colombian, born December 1, 1979. Graduated from Universidad Externado de Colombia in Government and Foreign Affairs and Master in Public Administration from Columbia University, School of International and Public Affairs, New York/NY. He has more than 15 years of experience in the Colombian and international financial sector, financial capital markets, risk classification and business management. He worked for about 2 years as general director of public credit and national treasury of Colombia. He was Director of Global Markets Investigations at Deutsche Bank Securities in New York. He worked at Fitch Ratings (2011 to 2015) as Director of Sovereign Latin American Ratings. He served as Research Officer of the International Monetary Fund (IMF), Monetary and Capital Markets Department (2009 to 2011). He was a program specialist at the Organization of American States (OAS), Secretariat for Political Affairs in Washington D.C. (2001 to 2006). He currently serves as Director Latin American Economist at Deutsche Bank, Emerging Markets Research. He was part of the Corporate Governance Committee, Sostenibilidad y Riesgos, Business Committee and Organizational Talent Committee at ISA. He participated in the Boards of Directors of Bancoldex (Member of the Board, Chairman of the External Credit Committee), Fondo de Ahorro y Stabilización - FAE (Chairman of the Investors Committee).

Colombian, civil engineer graduated from the National University of Colombia and holds an MBA from the Massachusetts Institute of Technology (MIT). He has two master's degrees, in civil engineering with an emphasis on construction management and in administration with an emphasis on finance, both from Universidad de los Andes. He has been linked to Interconexión Eléctrica SA ESP – ISA since February 1, 2023. He has more than 19 years of experience in leadership positions and has been a member of the board of directors in different companies in the energy mining sector. He served as corporate manager of Financial Planning and Performance of the Corporate Vice-Presidency of Finance at Ecopetrol, a company in which he has worked for over 17 years in the technical, financial and project areas. In his last role, he led the corporate processes for portfolio and capital allocation, financial planning, business performance and projected prices and rates, in addition to building the Ecopetrol Group's medium-term business plan.

Brazilian, electrical engineer graduated from the Federal University of Santa Catarina (UFSC) in 1999, with a specialization in Finance (2000), from the Socioeconomic Studies and Research Foundation (Fepese/UFSC), an MBA in Corporate Finance (2003), from Ibmec, and participation in the General Management Program (2014), at CEDEP/Insead (France). He began his professional career in Florianópolis at Gerasul/Tractebel (currently Engie) in 2000, and continued his career at Engie from 2006 to 2014 where he held business development, financial analyst, Head of strategy and CFO positions in Dubai, Rio de Janeiro, Panama and India. In 2015, he started working at Engie's headquarter in Paris, reaching the position of Global Head of M&A, in 2018. He took over the Business Strategy and Equity Division at Eletrobras in December 2022.

Employee representative, elected in a separate vote and appointed to represent employees on the Board of Directors. Brazilian, born on November 9, 1965, electrical engineer graduated from Universidade Paulista in 2014, postgraduate degree in occupational safety engineering from Universidade Candido Mendes, Bachelor of Laws from the Faculty of Law of Bauru in 1995, lawyer registered with the Portuguese Advogados do Brasil - São Paulo section, postgraduate degree in Social Security Law from Universidade Candido Mendes, mechanical technologist from Universidade Estadual Paulista Júlio de Mesquita Filho – Unesp in 1989. He has been a member of the Fiscal Council since 2018 at Vivest (Fundação CESP) and was a member of the Board of Directors deliberative from 2009 to 2018. He was a member of the board of directors of the Cooperativa de Economia e Crédito Mútuo dos Empregos das Empresas de Energia Elétrica do Estado de São Paulo from 2000 to 2011 and a member of the fiscal council from 1999 to 2000. Since 2018, he has been a member of the Board of Directors from ISA CTEEP.

Brazilian, senior assistant professor at Fundação Getúlio Vargas (EBAPE/FGV) and associate professor at the State University of Rio de Janeiro (FAF/UERJ). Doctor in Accounting Sciences from FEA/USP (2005), Master in Accounting Sciences from FAF/UERJ (2001), graduated in Accounting Sciences (1998) and Law (1998). He is a Partner at Szuster Cardoso Serviços Contábeis. Consultant and reviewer for companies in IFRS/CPC and for governments in IPSAS/MCASP. Independent consultant to the World Bank. Chairman of the Fiscal Council of ISA CTEEP. Member of the Fiscal Council of MAM-RJ. Alternate member of the Fiscal Council of WWF-Brasil. Member of the Audit and Accounting Standards Committee of the Brazilian Association of Publicly-Held Companies (CANC-ABRASCA). In 2010, he served as an Academic Fellow at the International Financial Reporting Standards Foundation (IFRS Foundation), in London. In 2011, he served as a member of the Risk&Quality committee of PWC-Brasil. In 2012, he acted as an independent consultant for the World Bank, for the preparation of the Report on the Observance of Standards and Codes in Accounting and Auditing (ROSC-A&A). Between 2010 and 2013, he advised the Federal Accounting Council, collaborating directly in several working groups, including: technical review of the translation of the IPSASs Handbook 2010, dissemination of CPC PME, dissemination of IFRSs, constitution of GLASS. Research interest in Regulation, Professional Judgment and Data Analysis applied to Accounting, both in the public and business sectors.

Portuguese, accountant graduated in 1977 and business administrator graduated in 1975 from the Faculty of Accounting and Administrative Sciences Moraes Júnior (currently Mackenzie – RJ). Founder and CEO of Domingues e Pinho Contadores, since 1984; Founder and Director of GBrasil – Grupo Brasil de Empresas de Contabilidade, since 1996; President of the Portuguese Chamber of Commerce and Industry of Rio de Janeiro (2018 to 2022); Fiscal Council member of CTEEP - Companhia de Transmissão de Energia Elétrica Paulista (2006 to 2022); Chairman of the Fiscal Council of TAESA – Transmissora Aliança de Energia Elétrica S.A. (2017 to 2022); Chairman of the Fiscal Council of FOSB – Fundação Orquesta Sinfônica Brasileira (2019 to 2022); Fiscal Councilor of AAJB – Associação de Amigos do Jardim Botânico (2018 to 2023); Alternate Director of the CRC-RJ (2014 to 2025); and Member of the Advisory Board of SESCON-RJ (2017 to 2022). He was Chairman of the Board of Directors of Cromos S.A. Graphic Inks (1999 to 2000); Fiscal Council Member of Eletropaulo Metropolitana Eletricidade de São Paulo S.A. (2000 to 2001); and Fiscal Council member of TBG – Transportadora Brasileira Gasoduto Bolivia-Brasil S/A. ‐ Petrobras Group (2007 to 2012).

Brazilian, Bachelor in Computer Science from Universidade Estadual Paulista – UNESP and in Accounting Sciences from the Pontifical Catholic University of Minas Gerais – PUC Minas. He worked at independent audit firms Arthur Andersen, Deloitte and EY between 1996 and 2010 and was internal audit manager at Confab, a publicly held Brazilian company controlled by the Italian-Argentine group Techint/Tenaris. She was a partner at Hirashima & Associados, where she led accounting and financial consulting services and acted as a consultant for the Institute of Accounting, Actuarial and Financial Research Foundation - FIPECAFI. From July 2014 to August 2017, he held the position of controller in electricity generation companies. He was chairman of the Audit Committee of Caixa Econômica Federal and is currently a member of the board of directors of BRB - Banco de Brasília and of fiscal councils and audit committees of publicly-held and privately-held companies.

Brazilian, bachelor’s in Accounting from the Federal University of Santa Catarina, with 12 years of experience in the electricity sector, working in the Economic-Financial departments of Transmission, Generation, and Commercialization, having also worked at CGT Eletrosul and SPE Nova Era Janapu. She is currently the Executive Manager of Economic Studies at Eletrobras.

Brazilian, bachelor’s in Accounting from Universidade Cândido Mendes and Business Administration from Centro Universitário da Cidade, with over 18 years of experience in accounting and finance. He held the position of Capital Markets Manager and Accounting Advisor at PwC, Head of Quality Management and Commercial Support, responsible for three strategic areas in all business lines (B2G, B2B, B2C and E-Mobility) at ENEL X. He currently serves as Executive Controllership Manager at Eletrobras, leading the budget planning process.

Brazilian, Accountant. Master and Doctor in Accounting from the Faculty of Economics, Administration and Accounting of the University of São Paulo (FEA/USP). Post-Doctorate in Accounting from the University of Illinois at Urbana-Champaign. Full Professor at the Faculty of Administration and Accounting Sciences at the Federal University of Rio de Janeiro (FACC/UFRJ). He is a member of the accounting policies, taxes and financial statements subcommittee of the audit committee of Gol Linhas Aéreas and is a member of the Advisory Board of the Applied Research Center in Accounting and Analytics (ARC-A&A) of Fundação Getulio Vargas. Nathan is a partner at SzusterCardoso. Currently, he is an alternate member of the Company's Fiscal Council.

Brazilian, accountant, postgraduate in Accounting from FGV; Graduated in LLM - Corporate Law by IBMEC; Managing Partner of Domingues e Pinho Contadores; Financial Director of the American Chamber of Commerce in Rio de Janeiro; Member of the Fiscal Council of Escola Alemã Corcovado and Member of the Fiscal Council of FOSB – Fundação Orquesta Sinfônica Brasileira. He was a member of the Fiscal Council of TBG – Transportadora Brasileira Gasoduto Bolivia-Brasil S.A. (2012 to 2019).

Brazilian, Bachelor of Laws from the Pontifical Catholic University of São Paulo. Specialist in Consumer Relations Law and Master in Law from the same institution and an MBA in Business Management from Fundação Getúlio Vargas. She was Legal Director of Grupo Pão de Açúcar between 2005 and 2014. She held the position of Legal and Licensing Director of Grupo Carrefour Brasil between 2014 and 2018. She was Legal Director, Compliance and Government Relations of Grupo Lala in 2018 and 2019. From 2019 to 2021, she held the position of Legal Director, Risk Management and Compliance, Government Relations and DPO at Via Varejo SA She served as Secretary of the Board of Directors of Grupo Carrefour Brasil and Via Varejo S.A and was currently elected Alternate Fiscal Councilor of Tecnisa S.A and Executive Director of Instituto Mulheres do Varejo.

Brazilian, bachelor’s in Accounting from Universidade Moraes Junior. He took specialization courses in International Accounting Standards (IFRS) at Fipecafi, and “Theory and Operation of a Modern Economy” (George Washington University School of Business). He started his professional career at Eletrobras in 2002. He held positions as Manager of Accounting Consolidation and USGAAP (2006 to 2009), General Accounting Manager (2009 to 2013), Accounting Superintendent (2013 to 2021), and Planning and Control Superintendent (2022 to 2023). He is currently the Director of Planning and Controllership. Since 2010, he has been serving as a Fiscal Council member in several companies in the Electricity Sector. He chairs the Fiscal Council of Furnas and is a member of the Board of Directors of Equatorial Maranhão.

Brazilian, bachelor’s in Accounting from União Pioneira de Integração Social (UPIS), master and doctorate in Business Economics from the Catholic University of Brasília (UCB), Exponenial Business Administration (xBA) from Nova School of Business and Economics and StartSe, and holds an Executive MBA in Administration from Fundação Getúlio Vargas (FGV). He worked at Eletrobras Eletronorte, Energética Águas da Pedra S.A. (EAPSA), Brasventos Eolo Geradora de Energia S.A., Rei dos Ventos 3 Geradora de Energia S.A., Belo Monte Transmissora de Energia S.A. (BMTE), Companhia Energética Sinop S.A. (CES), Norte Energia – Usina Hidrelétrica Belo Monte – NESA, and EVIDA – Assistência à Saúde. He is currently Executive Planning Manager (FRPP) at Eletrobras.

Colombian, born December 1, 1979. Graduated from Universidad Externado de Colombia in Government and Foreign Affairs and Master in Public Administration from Columbia University, School of International and Public Affairs, New York/NY. He has more than 15 years of experience in the Colombian and international financial sector, financial capital markets, risk classification and business management. He worked for about 2 years as general director of public credit and national treasury of Colombia. He was Director of Global Markets Investigations at Deutsche Bank Securities in New York. He worked at Fitch Ratings (2011 to 2015) as Director of Sovereign Latin American Ratings. He served as Research Officer of the International Monetary Fund (IMF), Monetary and Capital Markets Department (2009 to 2011). He was a program specialist at the Organization of American States (OAS), Secretariat for Political Affairs in Washington D.C. (2001 to 2006). He currently serves as Director Latin American Economist at Deutsche Bank, Emerging Markets Research. He was part of the Corporate Governance Committee, Sostenibilidad y Riesgos, Business Committee and Organizational Talent Committee at ISA. He participated in the Boards of Directors of Bancoldex (Member of the Board, Chairman of the External Credit Committee), Fondo de Ahorro y Stabilización - FAE (Chairman of the Investors Committee).

Colombian, born on July 30, 1956. He has a degree in electrical engineering from Universidade Nacional de Colômbia with specialization in Quality Management from the Universidad EAFIT and a Master’s Degree in Operational Research from Strathclyde University, Scotland - UK in 1987. He was manager for Corporate Strategy at ISA – Interconexión Eléctrica S.A.E.S.P., where he coordinated strategic activities in term and positioning, growth and new businesses.
He was Chief Executive Officer of the Company from 2009 to November 2013. Since November 2013, he has been Vice President -Energy Transmission and responsible for the corporate areas of Projects, Operations, Engineering and Supply for Interconexión Electrica S.A. (ISA), the Company’s controlling holding company. Currently he is also a member of the Board of Directors of the Company, Transelca S.A.E.S.P., an energy transmission company, Intercolombia S.A.E.S.P., Red de Energía del Peru S.A, Consorcio Transmantaro S.A., ISA Perú S.A., Interchile S.A., Isa Capital do Brasil S.A. and Interconexión Eléctrica Colombia-Panamá, S.A., a bi-national construction company and the operator of the electricity link between Panamá and Colombia. In 2021, Cesar obtained the International Board of Directors certificate, granted by the Institute of Directors of London (UK).

Colombian, electrical engineer graduated from the Polytechnic Institute of Belarus, with a Masters in Engineering from the same Institute and Masters in Business Administration from EAFIT University. He has been linked to Interconexión Eléctrica SA ESP – ISA since 1998 and, since 2019, he has been responsible for ISA's Power Transmission business in Chile. Already acting as General Manager of ISA INTERCHILE, he contributed to the strengthening of ISA's presence in the southern country, guaranteeing operations and promoting sustainable growth. Previously, he served as Director of Corporate Operations at ISA, a position for which he was responsible for coordinating the operations of ISA's power transmission network in Latin America. In his 25-year experience at ISA, he also highlights his journey through all levels of the Power Transmission business in his role as Operations Engineer, Operations Director, Maintenance Director, Deputy Maintenance Manager and Technical Assistant Manager.

Joined the Company on January 10, 2017
Effective member of the Pro Antioquia Education Committee.
Former attorney specializing in Business Law, with ample experience and knowhow in human-talent management. As the holder of an Advanced Management Program degree, he has successfully led actions on topics like individual and collective relations, negotiations with workers’ unions, high-level leaders and critical talents development, organizational culture development, and change management, constantly striving to contribute to the profitable business development and growth and to the consolidation of excellent places to work. Formerly with ISA from 2006 and 2008 as Human Talent Management Officer. He then joined Sumicol, where he remained for 8 years as Human Resources Manager.

Uruguayan, born January 10, 1958. Graduated in economics. Gustavo Marin is Executive Vice President of First Data Corporation (FDC), which operates in payment systems and chairman of the management committee in Latin America (since February 2015). Mr. Marin is a board member of Santander Asset Management UK (SAM UK), the parent company of the SAM Group, controlled by Grupo Banco Santander and financial sponsors such as Warburg Pincus and General Atlantic. In addition, he is chairman of the audit committee of SAM UK. Mr. Marin was President of Citibank, a banking company, in Brazil, Argentina, Uruguay and Paraguay until July 2012. He was appointed CEO of Citibank in Brazil in 2001, responsible for all business segments in the country. He was invited by the Brazilian government to be a member of the Council for Economic and Social Development (CDES), an advisory body of the Presidency of the Republic during the first term of President Luis Inácio Lula da Silva (2002 – 2006). He is also a member of the Company's Board of Directors.

Bachelor of Business Administration with an emphasis in Marketing from Methodist University, North Carolina. Juliana has over 20 years of experience in leadership roles for multinational companies in the US and Europe, both in commercial and marketing roles, as well as in communications, corporate affairs and government policy advocacy. She worked as Marketing Coordinator for Colombia and Ecuador at Nerck Colombia S.A. She held positions such as New Products Manager, Product Manager, Line Coordinator and Regional Manager at Bayer S.A. She also held leadership positions at WYETH INC, PFIZER LTDA, AMGEN INC and UNITED HEALTH GROUP. In 2019, she was part of the Presidential Advisory Council of Colombian Companies, which works to guarantee the safety of women in economic issues of relevance to the country. He is currently Vice President of Institutional Relations at ISA.

Colombian, born on March 31, 1972. Lawyer graduated from the Pontifical Bolivarian University, specializing in Law and Political Science, Administrative Law and Commercial Law, from the same university, in 1994, 1998 and 2003, respectively. In addition, he has a postgraduate degree in Administrative Law from the University of Salamanca (Spain) in 2003. He has worked in the electricity sector since 1995. Initially as a Legal Advisor at URRÁ S.A. E.S.P. In June 1999, she began working at ISA as an advisory lawyer for the Wholesale Energy Market Management. In 2003, she was promoted to Director of Regulatory and Legal Management in ISA's Market Operational and Administrative Management. In 2005, she moved to XM Compañía de Expertos em Mercado S.A. E.S.P, where she served as General Secretary. She currently holds the position of Legal Vice President of the Isa Group and General Secretary of the ISA Board of Directors.