About us
Our mission is to support a sustainable energy future by empowering growth in the electric vehicle industry as one of the world’s largest producers of environmentally sustainable lithium
Demand for electric vehicles (EVs) continues
to rise
Increased demand for EVs has created an increase in demand for the raw materials required to build and power these vehicles.
Our 100% owned Grota do Cirilo project in Brazil will help bring more environmentally sustainable lithium concentrate to the global EV supply chain.
Since the inception of Sigma Lithium in 2012, ESG has been at the core of everything we do. We have consistently adhered to the highest standards in this area, from the preservation of regional ecosystems and our transformative social impact on local communities, to our passion for helping supply the global transition to electric energy.
Lithium is a key component of the lithium-ion battery used to power EVs
If these minerals are not mined sustainably,
it could undermine the environmental value of electrified mobility. That is why we are developing – as part of our ESG-focused strategy – one of the largest hard rock lithium projects in the world.
Sigma Lithium's key targets that drive progress
Green Power, Transformative Social Impact.
Sustainable
Become a leading supplier of environmentally sustainable lithium concentrate
Net Zero
Achieved Net Zero in 2023
Recyclable
Produce 100% dry stacked and recyclable tailings for use in other industries
Water Recirculation
Utilize 100% water recirculation through our production process
Hydropower
Power our facilities with 100% green hydropower
Agroforestry
Preserve and develop agroforestry systems in the regional ecosystem
Jobs
Create more than 1,550 direct jobs and 13,000 indirect jobs with 85% of the workforce being local
Education
Deliver high-quality education in local municipalities
Board of directors

Recognized in 2025 as one of few Brazilian women in Forbes’ 50 over 50 global trailblazers list, Ana is CEO at Sigma Lithium and co-chairs the Company’s inception in 2012.
Sigma Lithium is the fifth largest industrial-mineral lithium complex globally, producing carbon-neutral lithium concentrate. She is one of the pioneer investors and longest-serving CEOs in the lithium industry.
Ana co-founded A10 Invest, a leading venture capital boutique focused on impact investing. A10 FIA is the largest shareholder of Sigma Lithium, backing it to produce the Quintuple Zero Green Lithium, which is Carbon neutral and environmentally and socially sustainable.
Ana was awarded “Mining Person of the Year” in 2023 by Canada’s Northern Miner and “Industrial Person of the Year” in 2024 by the Minas Gerais Industry Federation. The State of Minas Gerais has awarded her the “Tiradentes Medal of Honor” for contributing to its economic development.
She has over 30 years of experience as a venture capital investor and sênior banker at global investment banks in New York, London, and São Paulo. She was Head of Latin American Capital Markets and a Managing Director at Goldman Sachs in New York. During her career, she has been involved in more than 150 capital markets and M&A transactions totaling more than $120 billion. Five of the transactions she worked on received the prestigious IFR “Deal of the Year” award, including the privatization of Vale in 1996.
Ana is on the Global Advisory Board of Columbia University Global Centers in New York. She co-founded “Mulheres do Brasil,” the country’s leading civil movement, with over 120,000 women as active members.

Marcelo Paiva is the Managing Partner and Co-Founder of A10 Investimentos. He is the portfolio manager of A10 FIA, the Corporation’s largest shareholder. Mr. Paiva has over 20 years of experience in asset management and investment banking in New York, London and São Paulo. Prior to A10 Investimentos, Mr. Paiva was a Portfolio Manager at the Mittal Family Office in São Paulo. Previously, he was a Vice-President at the U.K. asset manager Millennium Global in London, which, at the time, had over US$15 billion in assets under management and was one of the largest hedge funds in Europe. Mr. Paiva also held investment banking positions at Credit Suisse in London and UBS in New York. He has an MBA from INSEAD in France and completed the MBA Exchange Program at The Wharton School. Marcelo is a CFA Charterholder.

Mr. Zagottis is a member of the board of directors and of the control group of RD Saúde, Brazil´s leading drugstore chain, with 3,000 stores and US$7 billion in revenues (2023). The company is listed on the São Paulo Stock Exchange.
At RD Saúde, Mr. Zagottis leads the finance committee, is a member of the strategy committee and represents the company at the boards of two investees and also of ABRAFARMA, the Brazilian Chain Drugstores Association, having been its chairman from 2018-2021.
Mr. de Zagottis has worked as a C-level executive at RD Saúde from 2000 to 2024, having been responsible for investor relations, corporate planning, M&A and business development, including Univers, its proprietary PBM, RD Brands, its private label business, and RD Ventures, RD Saúde´s corporate venture capital platform, with investments in more than 10 start-ups. Outside RD Saúde, Mr. de Zagottis is a board member of Pet Love, the leader and pioneer in ecommerce and health insurance for pets in Brazil.
Previously, Mr. de Zagottis worked as a consultant for both McKinsey (1998-2000) and Arthur Andersen (1992-1996). He holds an MBA from the University of Michigan and a BBA from Fundação Getúlio Vargas in São Paulo, Brazil.

Mr. Jafar has the prominent role of Chief Investment Officer at Al Muhaidib Investment Office, which is the family office of Al Muhaidib Group, one of the largest private conglomerates in the Middle East (the “Conglomerate”) headquartered in Dammam, Saudi Arabia. The holdings of the Conglomerate include companies such as Vision Invest (which holds investments in ACWA Power (KSA’s largest private sector power & water entity, in partnership with PIF), Saudi Tabreed, Data Volt, and Miahona), as well as Riyadh Cables, Savola Group, and Masdar. Mr. Jafar oversees capital allocation across private and public markets and manages a portfolio of leading global private equity, private credit, infrastructure and venture capital managers.
Mr. Jafar currently serves on the Board of Directors of Seedra Ventures, one of the leading venture funds in KSA focused on fintech. His professional expertise spans direct investments across private equity, private credit globally and throughout the Middle East. With nearly 30 years in investment management, he has previously worked at J.P. Morgan, Fitch Ratings and Janus Henderson in London, as well as at Emerging Markets Partnership and Tadhamon Capital in Bahrain. Mr. Jafar is a Fellow of the Institute of Chartered Accountants England & Wales (ICAEW) and holds a bachelor’s degree in economics and political science from Middlebury College in Vermont, USA.

Alexandre Rodrigues Cabral is an academic focused on the reduction of greenhouse gas emissions.
Mr. Rodrigues is a member of the Board of the Université de Sherbrooke, and for the last 27 years he has been teaching Environmental Management and Sustainability, Environmental Geotechnics and Soil Mechanics.
He has vast and unique experience in geotechnical issues, such as the beneficial use of industrial residues as a substitute for natural soils. Mr. Rodrigues led successful pioneering projects in the proper use of industrial by-products.
Mr. Rodrigues was vice-president of the Canadian Geotechnical Society in the 2000s and is presently a member of the Scientific Advisory Panel of the International Waste Working Group (IWWG).
Mr. Rodrigues has worked as a consultant for several companies in Canada, Europe and South America. Previously, he worked for Serrener Consultation, D&G Enviro-Group and Enge-Rio.
From 2002 to 2015, Mr. Rodrigues also supervised a humanitarian group in Peru, Haiti, Burkina Faso and Malawi.
Mr. Rodrigues holds a B.Eng. from PUC-Rio, Brazil; a M.Sc. (Mineral Engineering) from École Polytechnique de Montréal and a Ph.D. (Civil Eng. & Applied Mechanics) from McGill University.

Mr. Lobo is a Brazilian national and has held executive roles at major Brazilian and international natural resources companies and has served as the Secretary of Geology, Mining and Mineral Transformation at Brazil’s Ministry of Mines and Energy.

Ms. Salum is a Brazilian national and a prominent environmental and social responsibility professional who has held a number of roles such as Director of Sustainable Development in Mining at the Ministry of Mines and Energy and Senior Representative for the Ministry at the National Council for the Environment (CONAMA), in addition to being the first woman to receive the professor title in the School of Engineering of the Federal University of Minas Gerais.
Management

Recognized in 2025 as one of few Brazilian women in Forbes’ 50 over 50 global trailblazers list, Ana is CEO at Sigma Lithium and co-chairs the Company’s inception in 2012.
Sigma Lithium is the fifth largest industrial-mineral lithium complex globally, producing carbon-neutral lithium concentrate. She is one of the pioneer investors and longest-serving CEOs in the lithium industry.
Ana co-founded A10 Invest, a leading venture capital boutique focused on impact investing. A10 FIA is the largest shareholder of Sigma Lithium, backing it to produce the Quintuple Zero Green Lithium, which is Carbon neutral and environmentally and socially sustainable.
Ana was awarded “Mining Person of the Year” in 2023 by Canada’s Northern Miner and “Industrial Person of the Year” in 2024 by the Minas Gerais Industry Federation. The State of Minas Gerais has awarded her the “Tiradentes Medal of Honor” for contributing to its economic development.
She has over 30 years of experience as a venture capital investor and sênior banker at global investment banks in New York, London, and São Paulo. She was Head of Latin American Capital Markets and a Managing Director at Goldman Sachs in New York. During her career, she has been involved in more than 150 capital markets and M&A transactions totaling more than $120 billion. Five of the transactions she worked on received the prestigious IFR “Deal of the Year” award, including the privatization of Vale in 1996.
Ana is on the Global Advisory Board of Columbia University Global Centers in New York. She co-founded “Mulheres do Brasil,” the country’s leading civil movement, with over 120,000 women as active members.



Bruno joined the Company as General Counsel in August 2024. With over 20 years of experience in corporate law, he has held Head of Legal and General Counsel roles at companies across the mining, steel, and energy and gas industries. His academic background includes a Law Degree and postgraduate studies in Tax and M&A from Pontifícia Universidade Católica de São Paulo (PUC), and an MBA from the Universidade de São Paulo.

With over two decades of experience in investment banking and consulting, Daniel has built a distinguished career advising on corporate finance, strategy, and business transformation. Most recently, he served as a Senior Advisor in the Turnaround & Transformation and Corporate Finance & Strategy practice areas at Boston Consulting Group.
Previously, Daniel was Head of Investments at RK Partners and an Investment Officer at Angra Infra, where he was responsible for overseeing key investment initiatives. His earlier career includes investment banking roles at Goldman Sachs in São Paulo and J.P. Morgan in London, where he gained extensive expertise in financial structuring and strategic advisory.
Daniel holds an MBA from The Wharton School of the University of Pennsylvania and a Bachelor of Science in Electrical Engineering from Tufts University.

Ligia has over 20 years of experience as a Senior Consultant, Professor and Researcher at Fundação Getulio Vargas on Human Rights and Business, Corporate Strategic Planning and Corporate Governance practices in accordance with ESG performance standards.
She holds a PhD in Business Law and Corporate Governance from University of São Paulo, having done research exchange at La Sapienza-Roma and IE Business School in Madrid. In those areas, Ligia is also experienced on working in large law firms.
Forerunner – in Brazil – of the creation of metrics and diagnostic evaluation surveys for the implementation of corporate policies focused on human rights, ethical standards of performance, innovation and diverse collective intelligence.
She has experience in institutional relations and public policy through dialogue with various stakeholders, formulating interaction channels, including the various instances of Public Authority.
Ligia is a member of several boards, including FIESP, Conselho de Líderes da CNI, Energy Transition Committee of CDESS, Global Compact UN, Women’s Entrepreneurship Committee (Ministry of Economy), Ambassador of Zumbi dos Palmares College and at Grupo Mulheres do Brazil.
In that last institution, which engages more than 120,000 women, she is Director of Institutional and Government Relations since its conception.

Keith Prentice is a seasoned leader in mine development and construction, with significant experience in Africa and internationally. Keith was formerly the Director of Processing at Sigma Lithium, where he most recently co-led the operational ramp-up of the Greentech Plant. Prior to joining Sigma Lithium, Keith served in leadership roles at Sierra Rutile Limited and Okavango Mining Engineering, where he developed and implemented major capital projects, managed project risk and mitigation, and worked alongside executive management on forecasting and reporting. Keith’s experience also includes roles as General Manager of Business Development at ELB/PBA Engineering and Departmental Head of Process at Kenmare Resources Plc. Earlier in his career, Keith spearheaded mining projects across Africa, and held various managerial positions at De Beers. Keith holds a degree in Extraction Metallurgy from the School of Mines at the University of Johannesburg and a Production Management Diploma from Technikon RSA.

Reinaldo Brandão is a senior mining executive with over 30 years of industry experience in complex mine systems operation from pit to port in global companies of mining and metallurgy. He holds a degree in Filtration Dry Stacking of Iron Ore Tailings from USP – Escola Politécnica da Universidade de São Paulo. Reinaldo has extensive experience in greenfield projects involving R&D and implementation, as well as operations with a focus on sustainability and ESG. Prior to joining Sigma Lithium, Reinaldo was a senior mining and metallurgy consultant at Norsk Hydro, as well as COO of Iron Ore at Anglo American Brazil, and COO and Mining Managing Director (CEO) of Vallourec & Sumitomo Brazil. Reinaldo began his career in mining leadership at Vale, where he held roles including Mining Automation Manager, Mine Operations Coordinator, and various engineering positions.
Reinaldo has a PhD in mine planning from Universidade Federal de Ouro Preto and He also received an MS in Engineering and a Bachelors in Mining Engineering from Escola De Minas.

Iran Zan is a geologist with over 12 years of professional experience in mining. Throughout his career, his work has included exploration and operational geology as well as administrative management in the pre-construction, implementation, and pre-operation phases of lithium and heavy minerals mines. Iran has held senior positions as Director of Community Relations and Institutions and Senior Exploration Geologist at Sigma Lithium over the past seven years. Previously, Iran was a Full Exploration Geologist at Mineração Taboca S.A. and Yamana Gold Inc. Iran holds a bachelor’s degree in Geology and Geosciences from the Universidade Estadual de Campina

Alexandre Matos is the Director of Health, Safety, Environment, and Community Relations at Sigma Lithium. He holds a degree in Environmental Engineering from the Universidade Federal de Itajubá (UNIFEI), an MBA in Business Administration from Fundação Getúlio Vargas (FGV-SP), a Master’s degree in Territorial Planning and Environmental Management from the University of Barcelona, and a postgraduate certificate in Occupational Safety from Pontifícia Universidade Católica de Minas Gerais (PUC Minas). He has over 18 years of experience in the mining and engineering sectors, including leadership roles at multinational companies. Throughout his career, he has led sustainability strategies, health and safety programs, environmental licensing processes, risk management, and community engagement initiatives.

Fádwa Andrade holds a degree in Social Communication, a postgraduate degree in Business Management from the Pontifícia Universidade Católica of Minas Gerais and an Master Business Administration from the renowned Fundação Getúlio Vargas, in addition to being a specialist in the global agenda of Human Rights. With more than 20 years of experience in the mining sector, she has worked as a Senior Executive of Sustainability, Communications and Human Rights at companies such as Vale, Kinross Gold Corporation, AngloGold Ashanti and Norsk Hydro.
Corporate Governance
The Board of Directors of Sigma Lithium Corporation (the “Company”) sets high standards for the Company’s employees, officers and directors. Implicit in this philosophy is the importance of sound corporate governance. It is the duty of the Board of Directors to serve as a prudent fiduciary for shareholders and to oversee the management of the Company’s business. To fulfill its responsibilities and to discharge its duty, the Board of Directors follows the procedures and standards that are set forth in these guidelines. These guidelines are subject to modification from time to time as the Board of Directors deems appropriate in the best interests of the Company or as required by applicable laws and regulations.
Governance Documents
- 2024 Board Diversity Disclosure Matrix
- 2023 Board Diversity Disclosure Matrix
- Board of Directors Mandate
- Chair of the Board of Directors Position Description
- Chief Executive Officer Position Description
- Timely Disclosure Confidentiality and Insider Trading Policy
- Whistleblower Policy
- Clawback Policy
- Statement of Differences
- Code of Business Conduct and Ethics
- Forced Labour Report
Sigma Mineração
Committee Composition
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Audit, Finance and Risk Committee
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ESG Committee
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People & Governance Committee
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Technical Committee
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Ana Cabral
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Alexandre Rodrigues Cabral
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Junaid Jafar
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Maria José Salum
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Vicente Lobo
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Marcelo Paiva
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Eugênio De Zagottis
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