Oscar Flores Lemaire

Career chronology

• Date not independently established; role reported in issuer source: Capstone Copper — General Manager, Mantoverde. Mantoverde history book launch (Oscar Flores, general manager)

Education and qualifications

Role history and reported qualifications

through October 2026 · issuer reported · medium materiality

Capstone says Flores joined as Mantoverde general manager on 15 January 2024 and reports previous roles with Kinross, AMSA, Anglo American, Codelco and New Gold. June 2026 reporting identifies him in the role.

Attribution: Responsibility not applicable. Positions and education are reported by issuers; independent credential verification is incomplete.

Relevance: Relevant role history, with limits on dates and credential verification.

Fourth Quarter 2023 Results (p. 6, Management and Board of Director Additions); Mantoverde history book launch (General manager quotation)

Contributions and company outcomes

Mantoverde commercial production and financial result

2024–2026 · issuer reported · medium materiality

Capstone announced commercial production at its Mantoverde Development Project on 21 September 2024, while noting its 2024 portfolio output was trending toward the low end of guidance and costs slightly above guidance. The October 2026 report said Q3 adjusted EBITDA rose, supported by higher realized metal prices.

Attribution: Role overlaps event; causation unproven. The milestones and financial outcome are company results and reflect multiple teams and commodity prices; no individual contribution is quantified.

Relevance: Relevant delivery context with financial and timing limits.

Mantoverde commercial production (commercial production and 2024 outlook); Third Quarter 2026 Results (Q3 2026 financial highlights)

Industrial safety

Four commuting deaths and company labour fine

June 2023–January 2025 · documented · high materiality

Four Mantoverde workers died in a June 2023 road crash while returning home. In January 2025 a Copiapó appeals court upheld a 60 UTM labour fine against Mantoverde for failure to enforce employee-transport safeguards. The court said the labour-fine dispute did not determine civil accident causation.

Attribution: Employer context; no individual link established. Flores joined as Mantoverde general manager on 15 January 2024, after the accident. The cited labour ruling concerns the employer; the reviewed sources do not establish his personal responsibility or civil causation.

Relevance: A material company safety matter, distinct from on-site fatality metrics.

Four Mantoverde employees die in journey crash (7 June 2023 accident report and company statement); Copiapó court upholds labour fine (22 January 2025 appellate decision summary); Fourth Quarter 2023 Results (p. 6, Management and Board of Director Additions)

Environmental record

Mantoverde process-water releases

2025, disclosed June 2026 · issuer reported · medium materiality

Capstone reports two 2025 releases from the tailings facility downstream slope during construction, totaling one million litres of process water. It says they were reported, investigated and resolved with no permanent environmental impacts identified; independent incident records were not obtained.

Attribution: Role overlaps event; causation unproven. The company reports the incidents; no personal action or fault is established.

Relevance: Relevant to tailings and environmental oversight.

2025 sustainability report, filed copy (Tailings and Waste, 2025 site performance; Business Integrity incidents)

Evidence gaps

• Independent identity, career and credential verification remains incomplete.

• Targeted searches do not establish absence of adverse records or exhaust applicable court, regulatory and local-language sources.

• The full appointment and current role history, previous employment and credentials require additional corroboration.

• The prior per-person topic search log could not be verified against retained execution records. Topic coverage and absence of adverse records are not established.