# Matthew Dusci Managing Director and Chief Executive Officer ## Career chronology - **Appointed CEO effective 1 October 2025; current in selected roster: Boss Energy Limited** — Managing Director and Chief Executive Officer. [Board and Management Transition]() (page 1, Board and Management Transition); [2026 Annual Report]() (FY2026 annual report, directors and management section) - **Joined in September 2024 as COO, before CEO appointment: Boss Energy Limited** — Chief Operating Officer. [Board and Management Transition]() (page 1, Board and Management Transition); [Management Team]() (leadership biography, lines 84–89) - **Joined in 2014; COO from early 2018 and Acting CEO from October 2022; end date not independently established: IGO Limited** — Chief Growth Officer, later Chief Operating Officer and Acting Chief Executive Officer. [Annual Report 2023]() (director biography, PDF text lines 822–834); [Management Team]() (leadership biography, lines 84–89) - **Earlier career; exact dates and titles not disclosed: PMI Gold Corporation** — Senior management role(s), not further specified. [Management Team]() (leadership biography, lines 84–89) - **Earlier career; exact dates and titles not disclosed: Gold Fields** — Senior management role(s), not further specified. [Management Team]() (leadership biography, lines 84–89) - **Earlier career; exact dates and title not disclosed: WMC Resources** — Earlier mining career; specific position not disclosed. [Management Team]() (leadership biography, lines 84–89) ## Education and qualifications ### Applied geology degree [dusci_education] By 2025-07-24 · issuer reported · medium materiality Boss reports that Dusci holds a Bachelor of Applied Science in Geology with Honours. The appointment release separately identifies the qualification as Bachelor of Science (Applied Geology) from Curtin University; both are issuer descriptions of the same apparent degree, with naming difference retained. No independent university record was located. **Attribution:** Responsibility not applicable. Education is relevant to technical mining leadership; credential was not independently checked. **Relevance:** Supports technical background for an operating uranium producer, subject to issuer-only verification. [Board and Management Transition]() (page 1, Board and Management Transition); [Management Team]() (leadership biography, lines 84-89) ## Contributions and company outcomes ### Honeymoon operating ramp during COO tenure [dusci_honeymoon_ramp] September 2024–June 2025 · issuer reported · medium materiality Boss stated in July 2025 that Dusci had overseen the Honeymoon ramp-up since joining as COO in September 2024. The mine exceeded first-year production guidance (850,000 lb) and reached 872,000 lb drummed in FY2025. Company attribution is supported, but the production outcome reflects the broader operation and team. **Attribution:** Role overlaps event; causation unproven. He was COO throughout the reported ramp-up; the cited sources do not isolate his individual decisions or contribution. **Relevance:** Directly relevant operating experience for the current CEO role. [Board and Management Transition]() (page 1, Board and Management Transition); [Global Uranium Conference presentation]() (pages 6 and 18, first-year production guidance outcome) ### Honeymoon delivered revised FY2026 production and cost guidance [dusci_honeymoon_fy26_delivery] FY2026 · issuer reported · medium materiality Boss reported 1.407 million pounds of FY2026 production, up from 872,000 pounds in FY2025, within the revised 1.40–1.45 million pound guidance. The annual report also reports C1 cost of A$39/lb and AISC of A$61/lb, within the revised cost guidance. These are issuer-reported operation-level outcomes. **Attribution:** Role overlaps event; causation unproven. Dusci was CEO during FY2026 and had been COO since September 2024; no source isolates his individual contribution to production, cost or guidance delivery. **Relevance:** Relevant evidence of operating delivery during his senior tenure, considered alongside the earlier technical review and guidance reset. [Annual Report 2026]() (FY2026 annual report, shareholder letter and Honeymoon operational review, pages 9 and 14–18); [Global Uranium Conference presentation]() (page 13, revised operational guidance) ## Business failures and setbacks ### Honeymoon technical review and revised FY26 production plan [dusci_honeymoon_guidance_reset] July 2025–August 2026 · issuer reported · high materiality During FY2026 Boss withdrew its 2021 Enhanced Feasibility Study after operating data and updated technical work showed key continuity and leachability assumptions needed reassessment. Production guidance was revised from the initial 1.6 million lb target to 1.40–1.45 million lb; actual FY2026 production was 1.407 million lb, within revised guidance. The annual report describes a material share-price decline following the withdrawal. This is an employer/project setback and subsequent delivery against revised guidance, not a finding of individual fault. **Attribution:** Role overlaps event; causation unproven. Dusci was COO from September 2024 and CEO from October 2025, overlapping the review and FY26 plan. The technical assumptions originated in the earlier study; available evidence does not identify his personal responsibility for them. **Relevance:** Material to CEO delivery and capital allocation because it required a technical reset and revised guidance. [Global Uranium Conference presentation]() (page 13, operational review and original 1.6Mlb guidance); [Annual Report 2026]() (shareholder letter and Honeymoon review, pages 9 and 14-18) ## Industrial safety ### Honeymoon FY26 reportable incidents and no fatalities [dusci_safety_fy26] FY2026 · issuer reported · medium materiality Boss reports that no fatalities occurred at Honeymoon in FY2026, while incidents requiring statutory notification were reported to SafeWork SA. The annual report records three externally reportable incidents and says corrective actions were completed within agreed timeframes; it also says the total recordable injury frequency rate remained elevated. These are issuer disclosures, not an independent regulator audit. **Attribution:** Role overlaps event; causation unproven. Dusci was CEO during FY2026; no individual incident responsibility is identified. **Relevance:** Relevant operating-control evidence for CEO oversight; both reported incident burden and completed follow-up matter. [Annual Report 2026]() (work health, safety and wellbeing; pages 43 and 50-51) ## Environmental record ### Regulator register records repeated contained Honeymoon releases [dusci_honeymoon_site_incidents] May 2025–July 2026 · documented · medium materiality The South Australian DEM incident register lists five Honeymoon events from May 2025 through July 2026: a small UOC release after filtration failure, a 48,000-litre barren-leach-solution spill, a 25,912-litre solution emergence at an injection well, and UOC releases of about 25 litres in February 2026 and 3 litres in July 2026. The register describes containment/remediation and reports no identified public exposure or off-site harm for the events summarized. It does not establish personal fault. The register shows two entries dated within FY2026, while Boss’s annual report says three externally reportable incidents; the public records reviewed do not reconcile the counts/categories. **Attribution:** Role overlaps event; causation unproven. Dusci was COO/CEO during this operating period; the regulator summaries identify site causes and controls, not his personal actions or causal responsibility. **Relevance:** Repeated containment/process-control events are relevant to senior operating oversight. The unexplained difference between the FY2026 annual-report count and visible register entries remains an evidence gap, not a finding of misreporting. [Honeymoon Uranium Mine incident report summary]() (incident entries dated 24 May 2025, 25 May 2025, 18 August 2025, 3 February 2026 and 18 July 2026); [Annual Report 2026]() (FY2026 annual report, work health, safety and wellbeing, pages 43 and 50–51) ## Suitability for the current role ### Relevant mining-operations leadership supports CEO role fit [dusci_fit] Career through 2026-10-10 · analyst inference · medium materiality The selected roster and issuer biography show a progression through Chief Growth Officer, COO and Acting CEO roles at IGO, followed by Boss COO from September 2024 and CEO from October 2025. The experience is relevant to an operating uranium producer, but the chronology is issuer-reported and independent evidence of attributable prior operating outcomes is limited. **Attribution:** Responsibility not applicable. This is a role-fit assessment, not a finding of individual responsibility for company outcomes or the earlier Honeymoon study assumptions. **Relevance:** Relevant operating leadership and technical mining exposure support the current CEO role; detailed chronology and attribution remain incomplete. [Annual Report 2023]() (director biography, PDF text lines 822–834); [Management Team]() (leadership biography, lines 84–89); [Board and Management Transition]() (page 1, CEO appointment and COO start) ## Evidence gaps - Exact departure date, detailed role sequence and independently corroborated employment records for IGO, PMI Gold, Gold Fields and WMC Resources were not established. - The issuer sources give slightly different names for the geology degree; no independent university award record was located. - The 2021 Honeymoon feasibility assumptions and individual responsibility for the later study withdrawal are not established by reviewed evidence. - Boss reports three externally reportable FY2026 events, while the reviewed DEM summary displays two dated events within that fiscal year; event categories/counts were not reconciled. - The official site register records containment actions but does not establish executive-specific causal responsibility; broader SafeWork SA, EPA, ASIC, court, sanctions and criminal-record searches were not exhaustive.