Pascal Van Osta

Career chronology

• Current at 9 October 2026: Altair Minerals Limited — Head of Exploration. Corporate (Board & Management / Guyana Strategic Leadership Team)

• From April 2021; end date not established: Roscan Gold Corporation — Vice-President, Exploration. Roscan Gold announces senior management changes (appointment); Management and Technical Advisors (management bio)

• May 2018–June 2019: Komet Resources / Morila Gold Mine — Exploration Manager. Roscan Gold announces senior management changes (career biography)

• Prior to Komet; exact dates not stated: Sandspring Resources / Toroparu — Exploration Manager. Roscan Gold announces senior management changes (career biography)

• Dates not stated: Etruscan Resources and Endeavour Mining — Exploration roles, West Africa. Roscan Gold announces senior management changes (career biography)

Education and qualifications

Geological and mineralogical science qualification

Prior to 2021 · issuer reported · medium materiality

Roscan’s dated executive biography reports an Honours Master in Geological and Mineralogical Sciences from Free University Brussels and more than 30 years’ experience; exact full employment chronology is incomplete.

Attribution: Responsibility not applicable. Employer biography supports stated qualification; degree was not independently verified.

Relevance: Directly relevant to Head of Exploration responsibilities.

Roscan Gold announces senior management changes (biography and qualifications)

Personal achievements

Exploration leadership across multiple West African gold projects

Career before Sep 2025 · issuer reported · medium materiality

Roscan appointment profile describes Van Osta’s previous exploration work at Morila, Samira Hill, Agbaou and Toroparu and executive exploration roles at Etruscan/Endeavour. This documents project exposure but the opened sources do not isolate his individual discovery contribution or demonstrate mine operation delivery.

Attribution: Role overlaps event; causation unproven. Positions and project associations are reported; no specific personal causal discovery or production attribution is established.

Relevance: Relevant exploration leadership experience for ALR’s Guyana and South Australian programmes.

Roscan Gold announces senior management changes (career history); Appointment of Head of Exploration (appointment)

Suitability for the current role

Senior exploration experience aligns with exploration remit

Current role · analyst inference · medium materiality

Analyst inference: 30+ years in exploration and prior West African project roles are relevant to exploration planning. Full dates and independently verified technical outcomes remain limited.

Attribution: Responsibility not applicable. No individual outcome beyond documented role history is inferred.

Relevance: High functional alignment to mineral exploration, with outcome and adverse history gaps.

Roscan Gold announces senior management changes (career and education); Appointment of Head of Exploration (appointment)

Evidence gaps

• Prior project chronology is partial; precise employment dates before Komet and Roscan were not established.

• The reviewed company biographies do not independently validate technical discoveries or production outcomes personally attributable to Van Osta.

• Open-web adverse searches are not exhaustive employer safety, environmental, litigation, credential or sanctions checks.