Marcelo Matos

Career chronology

• Since 2020-11-27: Stanmore Resources — Chief Executive Officer and Executive Director. 2025 annual financial report and Appendix 4E (Printed p3, CEO biography)

Contributions and company outcomes

Reported production and recent safety outcomes

September quarter 2026 · issuer reported · medium materiality

Stanmore reports 3.4 million tonnes of saleable production in the September 2026 quarter and no serious accidents in that quarter; its rolling serious-accident frequency rate was 0.53 as at 30 September. These are company-reported aggregate outcomes, not proof of a person's individual contribution.

Attribution: Role overlaps event; causation unproven. The executive held a leadership role during the period; no personal causation is established.

Relevance: Provides contemporaneous company operating and safety context.

Q3 2026 quarterly activities (Original ASX PDF pp1–2, production and safety)

Business failures and setbacks

Reported loss narrowed in first half

2025–June 2026 · issuer reported · medium materiality

Stanmore reported an after-tax loss of US$44.2 million for the six months ended June 2026 versus a US$50.5 million loss in the comparable 2025 half; company reports underlying EBITDA rose as prices increased. These group results do not establish individual responsibility.

Attribution: Role overlaps event; causation unproven. The executive held a group role during the period; commodity prices and group factors affect results.

Relevance: Financial performance context during the relevant tenure.

Appendix 4D and interim financial report for the half year ended 30 June 2026 (ASX original PDF p1, comparative loss; operating review pp5–7)

Environmental record

Five mine-water infringement notices in 2025

2025 · issuer reported · medium materiality

Stanmore disclosed one infringement notice for Isaac Downs and four for Isaac Plains relating to non-compliant releases of mine-affected water in February, April and August 2025. The company described the incidents as minor. Their detailed regulatory findings and final outcomes were not independently established.

Attribution: Role overlaps event; causation unproven. The company disclosed the notices during the executive's leadership tenure; the available source does not establish their personal involvement or fault.

Relevance: Provides an environmental control outcome during the leadership period.

2025 annual financial report and Appendix 4E (Printed pp12 and 16, environmental regulation and operating review)

Suitability for the current role

Experience relevant to role

Career; dates as disclosed · analyst inference · low materiality

Company reports prior Vale coal marketing and strategy and Vale Australia managing director roles. It reports a business administration degree from Pontifical Catholic University of Rio de Janeiro and an executive MBA from IBMEC; the degrees have not been independently verified.

Attribution: Responsibility not applicable. The person's stated background is reported by the company. The inference about relevance is analytical; independent checks remain incomplete.

Relevance: Relevant to the scope of the current role.

2025 annual financial report and Appendix 4E (Printed p3, CEO biography)

Evidence gaps

• This partial screening does not include dedicated person-specific searches for every fraud, safety, environmental, governance and legal topic, all material prior-employer records, original court or regulator registers, or independent credential verification.

• One broad name-and-employer query is repeated across topic entries; it represents one actual search, not nine separate topic searches.

• The exact continuation of some roles at 31 October 2026 is inferred from the latest accessible dated company materials and undated leadership page, not independently confirmed.