Cashel Meagher

Career chronology

• From 2025-05-02 through cutoff: Capstone Copper — President and CEO. 2025 Annual Information Form (Directors and Officers, executive table)

• 2015–2021: Hudbay Minerals — Senior Vice President and Chief Operating Officer. 2026 Management Information Circular (Executive Director, professional experience)

Education and qualifications

Role history and reported qualifications

through October 2026 · issuer reported · medium materiality

Previously Hudbay Senior VP and COO during 2015–2021 and Capstone president and COO during 2022–2025. Capstone reports an advanced major in geology and chemistry and a professional geoscientist designation.

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.

Senior and corporate leadership (Cashel Meagher biography); 2026 Management Information Circular (executive-director professional experience)

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)

Business failures and setbacks

Recent production and cost deterioration

July–October 2026 · issuer reported · medium materiality

Capstone reported Q3 2026 copper output of 45,218 tonnes, 18% lower year-on-year, and C1 costs of US$2.95/lb versus US$2.42/lb. It attributed lower production in part to Pinto Valley unplanned maintenance and a planned shutdown; crusher commissioning identified additional repairs.

Attribution: Role overlaps event; causation unproven. Company-wide outcome during senior management tenure; the sources do not attribute specific decisions or causation to this individual.

Relevance: Relevant operating and financial context.

Third Quarter 2026 Results (Consolidated Production and Pinto Valley)

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: Role overlaps event; causation unproven. The cited labour ruling concerns the employer. The reviewed sources do not establish this executive’s 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)

Fatal fall at Hudbay Lalor during COO tenure

June 2021 · documented · high materiality

Hudbay reports a worker employed by a service provider died in a June 2021 fall at its Lalor underground mine. The company says operations were suspended and its internal investigation identified absent controls and corrective actions. Meagher was Hudbay COO during 2015–2021.

Attribution: Role overlaps event; causation unproven. Employment overlap and corporate role do not establish personal responsibility for the accident.

Relevance: Relevant safety-oversight context.

Fall-from-heights incidents (2021 fatal incident and investigation); 2026 Management Information Circular (Meagher, Hudbay employment)

Environmental record

Mantos Blancos regulatory process remains ongoing

2022–October 2026 · documented · medium materiality

Chile’s SMA rejected Mantos Copper’s proposed compliance plan in August 2024 within a proceeding opened in 2022. Capstone reports that the operator appealed the rejection but later withdrew that appeal. The SMA register listed the proceeding ongoing when checked at the cutoff.

Attribution: Role overlaps event; causation unproven. The proceeding concerns the operator; the reviewed sources do not establish this executive’s personal fault.

Relevance: Relevant to environmental and governance oversight, without inferring wrongdoing.

SMA rejects Mantos Copper compliance plan (13 August 2024 rejection); Mantos Blancos enforcement file D-064-2022 (D-064-2022 status and documents); 2025 sustainability report, filed copy (Business Integrity, regulatory proceedings)

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)

Governance and interests

Constancia community protests and production

2015–2019 · issuer reported · medium materiality

Hudbay reported 2016 community protests, a roadblock and brief occupation that led to a temporary suspension, and described a peaceful resolution. Hudbay separately reported the mine moved into full production in 2015 and achieved record throughput in 2019.

Attribution: Role overlaps event; causation unproven. Company achievements and community outcomes occurred during a senior operations role but do not prove individual causation.

Relevance: Balances operational delivery with community-relations challenges.

Constancia community relationships (A Foundation for Rewarding Community Relationships); Constancia: Record Results (Constancia construction and production)

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