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2026-11-06

← TOK management

Full background report

Warren Uyen

Chief Operating Officer

Career chronology

  • Earlier career; exact dates not established: Prior employers as stated in official or reviewed professional profile — Former SVP/COO of K92 Mining, EGM Underground Operations at Macmahon, and GM of Eldorado Gold’s White Mountain mine.. Leadership (Warren Uyen profile; career/role section)

  • Current role; roster as of 2026-09-26: Tolu Minerals Limited — Chief Operating Officer. Leadership (Warren Uyen profile; title and role); Tolu Strengthens Executive Leadership Team with Appointment of Warren Uyen as COO (Directors’ report / Corporate Directory; executive name and title)

Education and qualifications

Education and professional credentials

Credential history; dates not disclosed in reviewed source · issuer reported · low materiality

Mining Engineering; WA School of Mines graduate; MBA; First Class Mine Manager and Site Senior Executive certificates.

Attribution: Individual involvement documented. The profile identifies the stated qualifications; graduation dates and independent register verification were not located.

Relevance: Relevant to the technical, finance or governance responsibilities described in the current role.

Leadership (Warren Uyen profile; career/role section)

Personal achievements

Relevant professional experience

Earlier career; exact dates not established in reviewed profile · issuer reported · medium materiality

Former SVP/COO of K92 Mining, EGM Underground Operations at Macmahon, and GM of Eldorado Gold’s White Mountain mine.

Attribution: Individual involvement documented. The cited profile describes the person’s roles and involvement; outcome attribution is limited to what it explicitly states.

Relevance: Provides role-relevant experience; profile claims are issuer-reported and not a substitute for independent delivery evidence.

Leadership (Warren Uyen profile; career/role section)

Industrial safety

Fatal incident reported near Tolukuma

6 July 2026 · issuer reported · high materiality

Tolu disclosed a fatal incident on exploration licence EL2531 in Papua New Guinea on 6 July 2026. The announcement said the incident occurred near the Tolukuma operation, and the Mineral Resources Authority/Mines Inspectorate were notified. The reviewed evidence does not establish the circumstances, investigation findings, or any individual’s involvement.

Attribution: Role overlaps event; causation unproven. The event occurred during current executive service, but no source reviewed links this individual to the incident or its causes. No final regulator finding was located by the cutoff.

Relevance: Safety oversight is central to restart and operating roles; relevance is a question for governance, not a causation finding.

Tolu reports incident on EL2531 resulting in a fatality (incident circumstances and notification to regulators)

Suitability for the current role

Role fit and evidence limits

Assessment at cutoff 2026-10-09 · analyst inference · medium materiality

PNG mining and underground operating experience is relevant to Tolukuma restart planning; the mine’s safety and restart execution require current operational evidence.

Attribution: Responsibility not applicable. This is an analytical inference from the cited career profile and the company’s stated stage; it does not claim personal causation of company outcomes.

Relevance: Connects prior experience to the role’s execution and oversight needs.

Leadership (Warren Uyen profile; career/role section)

Evidence gaps

  • Exact dates for prior roles and independent confirmation of profile claims were unavailable in the reviewed materials.

  • The regulator investigation outcome and detailed circumstances of the July 2026 fatal incident were not available in the reviewed pre-cutoff material.