# Jaime Rivera

General Manager Santo Domingo

## Career chronology

- **From 2026-07-01 through cutoff: Capstone Copper** — General Manager Santo Domingo. [Second Quarter 2026 Results](<https://capstonecopper.com/news/capstone-copper-reports-second-quarter-2026-results/>) (Management Additions)

## Education and qualifications

### Role history and reported qualifications [rivera_background]

through October 2026 · issuer reported · medium materiality

Capstone reports his appointment to Mantos Blancos in October 2023 and transfer to Santo Domingo from July 2026, following roles at Codelco and BHP.

**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.

[Third Quarter 2023 Results](<https://capstonecopper.com/news/capstone-copper-reports-third-quarter-2023-results/>) (Management Additions); [Second Quarter 2026 Results](<https://capstonecopper.com/news/capstone-copper-reports-second-quarter-2026-results/>) (Management Additions)

## Environmental record

### Mantos Blancos regulatory process remains ongoing [rivera_sma]

2022–October 2026 · documented · high 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. Rivera became Mantos Blancos general manager on 17 October 2023, after the proceeding began. The operator’s submissions are recorded separately; the reviewed sources do not establish his personal fault.

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

[SMA rejects Mantos Copper compliance plan](<https://portal.sma.gob.cl/index.php/antofagasta-sma-rechaza-programa-de-cumplimiento-a-la-empresa-minera-mantos-copper/>) (13 August 2024 rejection); [Mantos Blancos enforcement file D-064-2022](<https://snifa.sma.gob.cl/Sancionatorio/Ficha/2868>) (D-064-2022 status and documents); [2025 sustainability report, filed copy](<https://financialfilings.com/filings/capstone-copper-corp/environmental-social-information/2026/74484024/>) (Business Integrity, regulatory proceedings); [Third Quarter 2023 Results](<https://capstonecopper.com/news/capstone-copper-reports-third-quarter-2023-results/>) (Management Additions, Jaime Rivera appointment)

## Governance and interests

### Signed company response to Mantos Blancos proceeding [rivera_sma_response]

August–September 2024 · documented · medium materiality

Rivera signed Mantos Copper’s 2024 written defense seeking dismissal of the regulator charges or a lesser sanction. This is the operator’s submission; the regulator’s rejection and ongoing case are described separately.

**Attribution:** Individual involvement documented. His documented action is signing submissions on behalf of the operator; that does not establish responsibility for underlying alleged noncompliance or validate the company’s defense.

**Relevance:** Directly documented regulator engagement relevant to environmental oversight.

[Mantos Copper written defense, D-064-2022](<https://snifa.sma.gob.cl/General/Descargar/20605074070>) (pp.1 and 82, position and signature)

## 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.

- The separate notice said to describe continuing controls could not be independently reviewed during audit.