Opy Health C-level executives and Board of Directors have valuable experience in providing public services under a concession contract, in addition to corporate structuring and restructuring, corporate strategy, and regulatory management.
We have a highly-qualified team working in different business segments, with proven experience in generating value and offering operational efficiency.
Otávio Silveira is the CEO of Opy Health and a Managing Director at IG4 Operations Company. He is the former CEO of Iguá Saneamento (2014-2017) and Dreen Brasil Investimentos (2008-2014), a renewable energy business he was involved with since its foundation. Besides working in the healthcare, sanitation, and energy industries, Silveira also worked at Intervias, a highway operation company, from 2000 to 2004. He is also a member of the Environmental Analysis, Risk, and Planning Committee at Iguá Saneamento. Silveira holds an MBA degree from Getúlio Vargas Foundation (FGV), an MBA degree in Economic Engineering from Fundação Dom Cabral, and a bachelor’s degree in Civil Engineering from the Federal University of Minas Gerais.
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Rogério Bolzani Caldas is the CFO of Opy Health and an Executive at IG4 Operations Company. Throughout his career, Caldas has filled leadership positions in Finance, Strategy, and Business Development in publicly-traded and privately-held multinational and family-owned companies, in the retail, media, and telecommunications sectors.
He served as the CFO of Shoulder, a fashion retail company, and as a Controller, Strategy Manager, and Board Advisor at Casas Pernambucanas. He was the Senior Manager of Strategic Planning at Grupo Abril and Telefônica | VIVO.
Caldas holds a bachelor’s degree in Electrical Engineering from the Polytechnic School of the University of São Paulo (USP), and a postgraduate degree in Business Administration from FGV.
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Thiago Nery Python is an Executive with over 16 years of experience in Management and Engineering, Python was São Paulo Regional Director at Iguá Saneamento, having led teams working with concession contracts and PPPs in different cities of the state of São Paulo.
He worked as an Investment Manager at Dreen Brasil and a General Construction Manager at Construtora OAS LTDA, where he took part in undertakings such as Ponte Estaiada Roberto Marinho, TRT-SP, TST-DF, and REVAP and RENEST refineries.
Python holds an Executive MBA degree in Finance from Insper-SP, a postgraduate degree in Project Management (PMI) from FIA-SP, and a bachelor’s degree in Civil Engineering from Mackenzie Presbyterian University.
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Brener worked at Mendes Junior Edificações as a Resident Engineer and Contract Manager, at Mendes Junior Trading e Engenharia as a Contract Management Engineer for the Oil, Gas, and Energy Sector, and Integra Offshore. He was the acting Director of Operations during the expansion of Holcim’s cement plant, in the city of Barroso, state of Minas Gerais, and during Arcelor Mittal’s industrial maintenance contract, in the city of Juiz de Fora, also in the state of Minas Gerais. He was a consultant at Brener Engenharia, where he focused on designing new business structures for foreign private equity companies interested in investing in Brazil.
He has a postgraduate degree in Advanced Project and Contract Management from Fundação Dom Cabral, and in Heavy Construction Executive Training from Estácio de Sá University. He holds a bachelor’s degree in Engineering from the Federal University of Minas Gerais.
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Júlia worked at Wiz as a Legal and Compliance Manager, she was responsible for implementing and running the compliance program, and managing contract and corporate strategies.
Before starting her executive career, Júlia was a compliance and internal investigation lawyer at Feldens Madruga law firm, after having worked for the US State Department as an assistant in the investigation of fraud and other white-collar crimes.
She lived in California for two years, where she obtained her LL.M. degree from the University of California, Berkeley, with a major in international law.
Júlia also holds a specialist degree in Criminal Law and Criminal Procedure from Instituto de Direito Público de Brasília (IDP) and is a certified specialist in Sustainable Capitalism and ESG by the University of California, Berkeley.
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Chiaramonti worked in strategic consulting companies (Bain & Company and L.E.K. Consulting) in the cities of São Paulo and San Francisco (USA), developing projects for multinational companies and private equity firms in healthcare, financial services, education, agribusiness, aviation, retail, technology, insurance, basic sanitation, and mining.
He holds a bachelor’s degree in Mechatronics from the Polytechnic School of the University of São Paulo (USP).
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Helcio Tokeshi is a Managing Director and Chief Economist at IG4 Capital, and a member of IG4 Capital Private Equity Fund II Investment Committee. Before joining IG4, he served as a Secretary at the Treasury Division of the State of São Paulo (2016-2018). Before that, he was a Partner at GP Investments, where he worked with infrastructure investments, and a Managing Director at EBP (Estrutura Brasileira de Projetos), a company dedicated to infrastructure undertakings in partnership with BNDES and the Brazilian federal government. Before EBP, Helcio worked at McKinsey from 1999-2004 and 2006-2008. He also worked as Secretary of Economic Monitoring for the Ministry of Finance and worked as an Economist at the World Bank in Washington, D.C.
He holds a bachelor’s degree in Economics from the University of São Paulo, a master’s degree in Economics from the University of Campinas (Unicamp), and has completed his Ph.D. at the University of California, Berkeley.
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Gustavo Buffara is IG4 Capital Managing Director and CFO. He is also a member of the Board of Directors of Iguá Saneamento and a member of the company’s Sustainability CommittBeforeudit Committee. Prior to IG4, Buffara was a Senior Director and Managing Director at RK Partners, an advisory firm specializing in debt restructuring and operational turnaround.
Gustavo was Deputy Director at GP Investments, being responsible for investments in the Brazilian infrastructure and telecommunications sectors. During this period, he was also part of GP Investments' first team to work at BR Towers, being responsible for structuring the company and designing a 100-day plan along with the company’s C-Level executives.
Previously, Gustavo served as a Senior Consultant at Bain & Co. and was the head of Planning, M&A, and Regulatory Strategy at Telefônica group.
Graduated in Public Administration from EAESP-FGV (Getúlio Vargas Foundation), hand e holds a master’s degree in Business Administration from IMD in Switzerland.
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Paulo Mattos is the co-founder, Managing Partner, and CEO of IG4 Capital. Before starting IG4 Capital, Mattos was a partner at RK Partners, a consulting firm specializing in debt restructuring and operational turnarounds, and the Managing Director of GP Investments, a Latin American leading alternative investment firm.
Mattos was the Head of Infrastructure and Telecommunication Investments at GP Investments and a member of the Investment Committee (2012-2016). He was the founder of BR Towers S.A., Brazil’s first large independent cell phone tower company, in which he served as Chairman of the Board of Directors (2012 to 2014). BR Towers S.A. was later sold to American Tower Corporation.
Before joining GP Investments, Mattos was the Executive Vice President of Business Strategy, Wholesale, and Regulatory Affairs at Oi S.A (2009-2012), the largest telecommunications company in Brazil at the time. At Oi, he served on the Executive Committee, the Financial Risks Committee, and the Operations Committee. Mattos also worked at the Brazilian Development Bank (BNDES) as a Managing Director, was a member of the Credit and Investment Committee, and was Head of the Management Committee (2007-2009).
Currently, Mattos is Chairman of the Board of Directors of Iguá Saneamento SA (2017-), one of the main private water and sanitation companies in Brazil, and Member of the Board of Directors of OPY Health SA (2019-), a healthcare company that provides infrastructure and logistics services to hospitals and medical service operators, of which IG4 Capital is the controlling shareholder.
Mattos is a venture capitalist and the co-founder of Capital Lab Ventures, a platform started with proprietary capital gathering venture capital investments focused on Telecommunications, Media, and Technology – TMT.
Additionally, he is the co-founder and member of the Board of Directors of Instituto Iguá, a nonprofit organization focused on promoting new technologies and education for sustainable access to water and sanitation. He is also a member of the Fiscal Council of Associação Universitária Interamericana – AUI, a nonprofit educational group that operates schools in Brazil.
Mattos holds a J.D. and Ph.D. degree in Law from the University of São Paulo (USP), was a Fullbright Visiting Scholar at Yale University and is a visiting fellow at King’s College London. He is a permanent member of the Board of Directors of Centro Brasileiro de Análise e Planejamento – CEBRAP and a former associate professor at Getulio Vargas Foundation – FGV, a leading think tank in public policy and business administration.
Irineu Francisco Delfino Silva Massaia is an infectious disease physician who completed his training 20 years ago and is currently Vice Director of Santa Casa de São Paulo School of Medical Sciences (FCMSCSP). Before joining IG4, Massaia served as Superintendent of Irmandade da Santa Casa de Misericórdia de São Paulo (ISCMSP), was Vice President of the Medical Residency Commission at ISCMSP, Director of the Hospital Infection Control Service of ISCMSP, and Director of the Department of Medicine at ISCMSP. He also served as Statutory Director at EZVIDA Soluções em Saúde developing projects with the National Confederation of Industry and SESI.
Massaia graduated from Santa Casa de São Paulo School of Medical Sciences (FCMSCSP), completed his Medical Residency in Clinical Medicine at Irmandade da Santa Casa de Misericórdia de São Paulo (ISCMSP) and in Infectious Diseases at Universidade de São Paulo-FMUSP. He holds a doctorate in Infectious Diseases Pathology from the University of São Paulo-FMUSP and an MBA degree in Health Management from Getúlio Vargas Foundation (FGV-SP). He also serves as an Associate Professor in the Department of Clinical Medicine, teaching Propaedeutics and Infectology at FCMSCSP, and is an editor of medical books.
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