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2026-11-06

← S32 management

Full background report

Sandy Sibenaler

Chief Financial Officer

Career chronology

  • As reported at 2026-10-31; dates where documented in findings: South32 — Chief Financial Officer. FY2026 annual report (Printed p.144)

Education and qualifications

Issuer-reported qualifications

As reported in annual report · issuer reported · low materiality

Issuer reports a BCom from Western Australia, Master of Finance from Kaplan, CA ANZ fellowship and AICD graduate status; independent verification incomplete.

Attribution: Responsibility not applicable. Issuer biography, not independent verification.

Relevance: Professional training and experience.

FY2026 annual report (Printed p.144)

Industrial safety

Cerro Matoso fatality and FY2025 incentive decision

September 2024; FY2025 · issuer reported · high materiality

In September 2024 contractor José Luis Pérez died at Cerro Matoso after a floor grate failed. South32 reported an investigation and site inspections. Its board applied a negative FY2025 short-term incentive modifier of 5% to Sandy Sibenaler in recognition of the fatality. The board decision does not establish individual fault.

Attribution: Role overlaps event; causation unproven. The board directly disclosed the modifier; individual causation is not established.

Relevance: Safety oversight during company tenure.

FY2025 annual report (Printed pp.30, 147–148 (physical PDF pp.32, 149–150), safety account and FY2025 business modifier; visually checked)

Governance and interests

Board assessment after fatality and Hermosa cost change

FY2026 · issuer reported · high materiality

The board applied a negative FY2026 short-term incentive business modifier of 10% to Sandy Sibenaler, considering the March 2026 Worsley fatality and changes to Hermosa Taylor timelines and growth capital. It said the different modifiers reflected relative executive accountability. This board assessment does not establish personal causation of the death.

Attribution: Role overlaps event; causation unproven. The board directly described its incentive decision and accountability assessment, not personal culpability.

Relevance: Safety, project oversight and board assessment.

FY2026 annual report (Printed p.163, FY2026 business modifier; visually checked)

Suitability for the current role

Experience and responsibilities

As reported through August 2026 · analyst inference · low materiality

South32 since 2021, CFO since April 2023; earlier finance and commercial roles at Woodside and BHP, including Woodside treasury and insurance. The relevance to the present role is an analyst inference; company descriptions do not measure individual delivery.

Attribution: Responsibility not applicable. Issuer biography and analytical inference; exact prior dates are incomplete.

Relevance: Relevant to the current assigned mandate.

FY2026 annual report (Printed p.144)

Evidence gaps

  • Independent verification of education, qualifications and any current professional registration remains incomplete.

  • Full person-specific searches of each employer, court, regulator, sanctions, safety and environmental records are incomplete; no clearance is implied.

  • Exact past role dates, individual contribution and responsibility are not fully established.

  • The final WorkSafe and coronial outcome for the March 2026 Worsley fatality was not established.