Investor Relations
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Management Expertise
Experienced Global Professionals & Highly Regarded Mining Executives in Brazil With a Hands-On Management Approach
Management Team
Ana Cabral
Chief Strategy Officer
- Former Head of Equity Capital Markets Latam at Goldman Sachs in New York. Completed over $100 Billion in Transactions (+24 years)
- MBA Columbia Business School
Calvyn Gardner
Chief Executive Officer
- + 20 years at Anglo American Group
- Former General Manager/COO of Highveld Steel and Vanadium
Guilherme Guimaraes
Chief Financial Officer
- Former CFO at Denham Capital Mining Companies in Brazil
- 28 years in the mining sector
Anna Hartley
Director of Investor Relations
- Over 25 years’ experience in asset management and equity research at top tier financial institutions
- Former Senior Mining Analyst at Goldman Sachs
Maria Jose Salum
Director of Sustainability
- Former Director of Sustainable Development in Mining at Brazil’s Ministry of Mines and Energy
- Held senior roles at the Federal University of Minas Gerais, including Head of Department for Mining Engineering
- PhD in Mineral Technology
Board Expertise
Experienced and Multi Skilled Board of Directors: Strength of Our Corporate Governance and Transparency
Board Members
Ana Cabral
Co-Chairman
- Former Head of Equity Capital Markets Latam at Goldman Sachs in New York. Completed over $100 Billion in Transactions (+24 years)
- MBA Columbia Business School
Calvyn Gardner
Co-Chairman
- Over 20 years at Anglo American Plc
- Former General Manager/COO of Anglo’s Highveld Steel and Vanadium
Frederico Marques
Director
- Head of Cescon, Barrieu, Flesch & Barreto Advogados Canada in Toronto
- Former Partner and Foreign Consultant at McCarthy Tetrault LLP in Toronto
- Former Chairman of the Brazil-Canada Chamber of Commercee
Gary Litwack
Director
- Senior Partner and Counsel at McCarthy Tétrault LLP in Toronto
- Over 30 years of securities law experience in Canada
Anna Hartley
Director
- Over 25 years’ experience in asset management and equity research at top tier financial institutions
- Former Senior Mining Analyst at Goldman Sachs
Marcelo Freire de Paiva
Director
- Managing Partner and Co-Founder of A10 Investimentos (“A10”). Marcelo is the portfolio manager of the A10 Investimentos Fundo de Investimento de Ações – Investimento no Exterior (“A10 Fund”)
- Sigma’s largest shareholder. Marcelo has over twenty years of experience in asset management and investment banking in New York, London and São Paulo