Marina Bernardini
Marina Bernardini has more than 12 years of experience spanning legal, commercial, and international transactions within the lithium and energy transition sectors. Previously head of Sigma’s legal department, she transitioned to business development to lead strategic partnerships, offtake negotiation, and cross-border structuring across global markets. Prior to Sigma, Ms. Bernardini advised on complex M&A and […]
Alexandre Matos
Alexandre Matos is the VP 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 […]
Daniel Abdo
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 […]
Anna Hartley
Anna Hartley has over 30 years of experience in equity asset management, equity analysis and investor relations at prominent financial institutions in London and New York. She was Investor Relations Manager at Janus Henderson in London and worked for several years for a London-based asset management firm focused on natural resources. Before working in investor […]
Ligia Pinto
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 […]
Bruno Tamassia
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 […]
Catarina Noci
Keith Prentice
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 […]
Felipe Peres
Felipe Peres has over 30 years of experience as an executive of large dual-reporting multinational companies in natural resource sectors, where he had global responsibilities. Prior to Sigma Lithium, he worked at Vale International, the international arm of Vale, based in Switzerland and Canada, as a member of various teams, including Global Treasury, Corporate Finance […]
Ana Cabral
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 […]