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Our Executive Board

Meet the members of our Executive Board. Check out their professional backgrounds.

Jean Paul Prates, CEO

Jean Paul Terra Prates is 54 years old, he is a lawyer, graduated from the Universidade do Estado do Rio de Janeiro (UERJ), with a Master's in Economics and Management of Oil, Gas and Engines from the French Petroleum Institute (IFP School) and a Master's in Energy Policy and Environmental Management from the University of Pennsylvania. He was a member of the legal counsel of Petrobras International S.A. - Braspetro, editor of the Oil & Gas Journal Latinoamericana and Executive Director of Expetro Consultoria em Recursos Naturais Ltda., the largest national oil consultancy during the 1990s and 2000s, when he coordinated projects for several public and private companies, national and international, union and sector entities, and advised governments, regulatory agencies and parliamentarians in all areas of the energy sector. As Energy Secretary of the Rio Grande do Norte State Government he led the state to energy selfsufficiency and national leadership in wind power generation. He was recently recognized as one of the three most influential people in the renewable energy sector in Brazil, and one of the 50 most important personalities in the world energy sector, by the two main  in Brazil, and one of the 50 most important personalities in the world energy sector, by the two main international energy magazines - Recharge (European) and WindPower (American).

Carlos José do Nascimento Travassos - Chief Production Development Officer

Carlos José do Nascimento Travassos has a degree in Mechanical Engineering and 37 years of experience in the market (33 years at Petrobras), having occupied several leadership positions with passages in the Executive Boards of Exploration and Production and Production Development, acting in Brazil and abroad. He worked in the implementation of structuring programs in the areas of engineering, contracting, construction, commissioning and pre-operation, and was responsible for the delivery of the units P-66, P-67, P-68, P-69, P-70 and P-71 and for the design of new FPSOs focused on reducing emissions of greenhouse gases. In the downstream segment, he was responsible for the implementation of projects in the main refineries in the country, working in the areas of processing and natural gas, hydrotreatment units, refinery expansions and revamps. As Deepwater Executive Manager (AGP), he was responsible for the management of the Campos Basin and Espírito Santo units, along with the complementary development of the fields in these units.

Clarice Coppetti - Chief Sustainability and Institutional Relations Officer

Clarice Coppetti has a degree in Accounting and Economic Sciences. She has a postgraduate degree in Strategic Information Technology Management from FGV. She was Commercial Director of Companhia de Processamento de Dados do Estado do Rio Grande do Sul, PROCERGS, and was Vice-President of Information Technology at CAIXA Econômica Federal. She was Director of Operations and Services of the Olympic Public Authority and Director of Institutional Relations, accumulating the Financial Directory of the company NORTE ENERGIA S/A. She was full member of the Audit Committee of CAIXA Econômica Federal, full member of the Risk Committee of CAIXA; President of the Information Technology Committee of CAIXA Econômica Federal. She was a full member of the Deliberative Council and of the Fiscal Council of Fundação dos Economiários Federais, FUNCEF.

Claudio Romeo Schlosser - Chief Trading and Logistics Officer


Claudio Romeo Schlosser is a chemical engineer graduated from the Federal University of Santa Maria, and a lawyer from the Pontifical Catholic University of Petrópolis – RJ. He has an MBA in Finance from FGV and Management from INSEAD and Fundação Dom Cabral, and an Executive MBA from Rice University, Houston. He joined Petrobras in 1987 as Petroleum Processing Engineer. He has over 35 years of experience in the most diverse areas of processing, marketing, and logistics of oil and oil products. Among several positions held, he was General Manager of Henrique Lage Refinery (REVAP) and Landulpho Alves Refinery (RLAM), Manager and Director of Fábrica Carioca de Catalisadores, Vice-President of Petrobras America and Executive Manager of Refining, Petrochemicals and Fertilizers of Petrobras, commanding 13 refineries, one industrial shale plant and Petrobras’ petrochemical complexes and fertilizer plants.

Joelson Falcão Mendes - Chief Exploration and Production Officer

Joelson Falcão Mendes is a mechanical engineer from the Federal University of Rio de Janeiro (UFRJ) with an MBA in business management from FGV and specialization in advanced management from INSEAD, France. He joined Petrobras in 1987 as equipment engineer and has held several managerial positions in the last 31 years. He was Operations Manager of several platforms, General Manager of the Petrobras units in Amazonas, Rio Grande do Norte and Ceará states and Campos Basin. Later, he was Executive Manager of deepwater and Executive Manager of ultra-deepwater. Currently, he was responsible for the Executive Management of Safety, Environment and Health at Petrobras. He is a member of the Board of Directors of OSLR – Oil Spill Response Limited.

Mário Spinelli - Chief Governance & Compliance Officer

Mr. Mário Vinícius Claussen Spinelli holds a PhD in Public Administration and Government from the São Paulo School of Business Administration of the Fundação Getúlio Vargas (FGV-SP) and a Master in Public Administration from the Fundação João Pinheiro (FJP-MG). Professor of undergraduate and professional master’s degrees at the Business School of the Fundação Getúlio Vargas in São Paulo. Guest Professor of the Postgraduate Course on Preventing and Combating the Diversion of Public Resources at the Federal University of Lavras (since 2017) and the Postgraduate Course on Economic and Regulatory Law at PUC-RJ.

He was acting as Chief Regulatory Compliance Officer at the company Protiviti-ICTS (since 2022). He was General Ombudsman of Petrobras for two terms (2016-2021), General Controller of the State of Minas Gerais (2015), the First General Controller of the City of São Paulo (2013-2014), Secretary of Corruption Prevention and Strategic Information of CGU (2010-2013), Councilor of Coaf (2010-2013), Technical Advisor to the Chief Minister of CGU (2008-2009), Member of the Ethics Commission of CGU (2008-2009) and Manager of the Corruption Prevention Board of CGU (2007). He has been a career auditor at CGU (Federal Auditor of Finance and Control) since 2001. He was Expert Auditor for the Court of Audit of the State of Minas Gerais (1999-2001). He was also a member of the Fiscal Council of Transmissora Aliança de Energia Elétrica S/A, São Paulo Turismo S/A and Companhia São Paulo de Desenvolvimento e Mobilização de Ativos S/A.

He was the Brazilian representative in the Anti-Corruption Group of the G-20 Countries (2010). He was active in drafting the Access to Information Law and the Anti-Corruption Law, among other legal initiatives.

Foto de Mauricio Tolmasquim

Maurício Tolmasquim - Chief Energy Transition and Sustainability Officer

Mauricio Tolmasquim is Executive Manager of Strategy and Planning at Petrobras. He recently retired from his position as Full Professor of the Energy Planning Program of the Graduate Engineering Program (COPPE/UFRJ). He was CEO of the Empresa de Pesquisa Energética (EPE) for over 11 years coordinating studies to subsidize the planning of the energy sector, covering electric power, oil and natural gas and their oil products and biofuels. Under his management, Brazil successfully launched 37 energy auctions, contracting 92 GW of new electricity power generation capacity. He led the study that supports Brazil’s Nationally Determined Contributions (NDCs) submitted to the UNFCCC in 2015 and coordinated the studies that subsidized the elaboration of the new regulatory framework of the pre-salt.

He was Executive Secretary and Acting Minister of the Ministry of Mines and Energy for about two and a half years, and was responsible for coordinating the working group that designed the regulatory framework of the electric power sector in force since 2004. He was a visiting researcher at the Inter-American Development Bank (IDB) and the Electricity Policy Group at the Harvard Kennedy School. As a result of the renewable energy auctions implemented in Brazil and adopted by several Latin American countries, he was elected by Latin Trade Magazine as one of the 25 people who transformed Latin America in the last quarter century. He was honored by Itamaraty with the degree of Grand Officer of the Order of Rio Branco, which distinguishes meritorious service and civic virtues.

He was also elected a member of the Brazilian Academy of Engineering, a recognition of the exceptional talents of this profession.

Sergio Caetano Leite - Chief Financial and Investor Relations Officer

Sergio Caetano Leite holds a master’s degree in Economics and Management, is a CVM-certified portfolio and investment fund manager, with international experience in investment banking and mergers and acquisitions in Brazil and abroad. He worked for over 15 years in the oil industry as a financial consultant and in capital markets in fund management and fiduciary administration, serving institutional and structured funds. Recently, he served as undersecretary of the Northeast Consortium responsible for the Thematic Chambers of Sanitation, Energy (Renewable Energy, Oil and Gas), and Infrastructure and Investment. He also coordinated the Consortium’s Investment Platform, structuring more than 2 billion reais in financing for the member states in the last three years.

William França da Silva - Chief Refining and Natural Gas Officer

William França da Silva holds a degree in Chemical Engineering from the Federal University of Rio de Janeiro (UFRJ) and in Law from the State University of Rio de Janeiro (UERJ), an MBA in Business Management (COPPEAD/UFRJ) and training in Strategic Management and Value Chain (INSEAD/France). He began his career at Petrobras as a processing engineer in 1988, at the Duque de  Caxias Refinery/RJ (Reduc). His professional experience includes work as asset manager of the Guillermo Bell Refinery/Bolivia and general manager of the refineries: RPBC/Cubatão-SP; REGAP/Betim-MG; RLAM/Mataripe-BA; and REDUC/Duque de Caxias-RJ. He was also executive manager and director of Transpetro and Transpetro Internacional.