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2026-11-06

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Full background report

Sergio Rivera

Vice President of Exploration

Career chronology

  • Current role; exact role start is not established: Marimaca Copper — Vice President of Exploration. Sergio Rivera management page (Sergio Rivera biography)

Education and qualifications

Reported education and credentials

Undated · issuer reported · low materiality

Issuer reports bachelor and masters degrees in geology from Universidad Católica del Norte and professional memberships.

Attribution: Responsibility not applicable. The listed degrees and memberships have not been independently verified.

Relevance: Relevant to the individual’s stated role.

Sergio Rivera management page (biography)

Personal achievements

Relevant reported experience

Career to October 2026 · issuer reported · medium materiality

The issuer reports Rivera joined in November 2011 and assumed full exploration responsibility in June 2018.

Attribution: Individual involvement documented. The role history is issuer-reported; individual contribution and employment dates are not fully independently established.

Relevance: Relevant to the present mining, financing, legal or project role.

Sergio Rivera management page (Sergio Rivera biography)

Documented exploration contribution

2023 · documented · medium materiality

The independent 2023 NCL technical report credits Rivera and Kovacic with significant contributions to project exploration and report implementation. It estimates mineral resources; these do not establish actual production or independently attribute the whole discovery to one individual.

Attribution: Individual involvement documented. NCL credits both as members of a wider technical effort.

Relevance: Relevant to evidence of exploration delivery.

Updated mineral resource technical report (page 25 section 3)

Suitability for the current role

Role-fit assessment

October 2026 · analyst inference · medium materiality

The reported background is relevant to vice president of exploration, subject to the substantial limits of the available screening.

Attribution: Responsibility not applicable. Analyst judgment based on the cited roles; not a finding about character.

Relevance: Shows the evidence and uncertainty behind the team assessment.

Sergio Rivera management page (Sergio Rivera biography)

Evidence gaps

  • Independent verification of education, memberships and dates is incomplete.

  • Full previous-employer outcomes and person-specific public court, regulatory, safety and environmental records have not been exhaustively reviewed.