Peter Amelunxen

Career chronology

• Date not independently established; role reported in issuer source: Capstone Copper — SVP Technical Services. 2025 Annual Information Form (Directors and Officers, executive table)

Education and qualifications

Role history and reported qualifications

through October 2026 · issuer reported · medium materiality

Capstone reports that he joined as VP Technical Services in April 2022, became SVP in August 2023, and was previously Hudbay VP Technical Services. It reports engineering degrees from Arizona and McGill.

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 (Peter Amelunxen biography); 2025 Annual Information Form (Directors and Officers)

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)

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)

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.