# Roger Mason Managing Director and Chief Executive Officer ## Career chronology - **Career commenced 1987: Western Mining Corporation** — Geologist. [Annual Report for the year ended 30 June 2024]() (p. 5; career chronology) - **Joined 1997; end date not given: Forrestania Gold NL** — Geologist; later acquired by LionOre. [Annual Report for the year ended 30 June 2024]() (p. 5; career chronology) - **General Manager role from 2006; employer transitioned after LionOre takeover in 2007: LionOre Australia / Norilsk Nickel Australia** — General Manager of Geology. [Annual Report for the year ended 30 June 2024]() (p. 5; career chronology) - **2009-2010: Integra Mining Ltd** — Consultant, Randalls Gold Project Feasibility Study and resource/business development. [Annual Report for the year ended 30 June 2024]() (p. 5; career chronology) - **MD and CEO at least since ASX listing in April 2011; exact appointment date not established: Antipa Minerals Limited** — Managing Director and CEO. [Annual Report for the year ended 30 June 2024]() (p. 5; career and tenure); [Directors & Management]() (lines 38-41; current role) ## Education and qualifications ### Geology degree and professional membership [roger_mason_education] 1986 onward · issuer reported · medium materiality Antipa annual reports state BSc (Hons), University of Tasmania honours degree in science awarded in 1986, and membership of AusIMM since 1990. The issuer’s disclosures were not independently confirmed against university or professional-body records. **Attribution:** Individual involvement documented. These qualifications and membership are directly reported in company filings and fit the CEO’s geology and exploration background. **Relevance:** Relevant to geology and resource-company leadership; source remains issuer disclosure. [Annual Report for the year ended 30 June 2024]() (p. 5; qualifications and education) ## Contributions and company outcomes ### Long-tenure resource discovery and growth [roger_mason_resource_delivery] 2011-2026 · issuer reported · high materiality Antipa reports Mason has been MD/CEO since its 2011 ASX listing. The company’s 2 April 2026 release reported 2.9 Moz gold / 3.6 Moz AuEq across Minyari and satellite resources, including a 2.5 Moz gold Minyari Dome resource. Mason publicly commented on the estimate. Resource estimation was prepared by Snowden Optiro and Antipa’s competent persons; no source reviewed quantifies Mason’s personal contribution to the work. **Attribution:** Role overlaps event; causation unproven. CEO tenure overlaps company discovery and resource growth. Technical responsibility is attributed in the release to competent persons/consultants, so CEO causation is not assumed. **Relevance:** Substantial exploration delivery at the project stage, but no production or mine commissioning by cutoff. [Annual Report for the year ended 30 June 2024]() (p. 5; tenure and issuer-claimed resource history); [Minyari Project Resource Grows to 3.6 Moz Gold Equivalent]() (pp. 1-2 and pp. 20-22; estimate and competent person); [Interim Financial Report for the half-year ended 31 December 2025]() (pp. 12-20; exploration programme and discoveries) ### Completed A$17m portfolio sale [roger_mason_citadel] 2024-10-25 · issuer reported · medium materiality Antipa completed sale of its non-controlling Citadel JV stake to Rio Tinto for A$17m in October 2024, increasing cash reserves to more than A$23m. Mason was quoted as MD about the transaction; the company does not identify him as sole decision-maker or establish personal causal responsibility. **Attribution:** Role overlaps event; causation unproven. As Managing Director, Mason’s tenure and public representation overlapped transaction completion; the sale was a board/company decision and personal causation is not isolated. **Relevance:** Demonstrates capital recycling and project funding; proceeds were used to support exploration/development, not production. [Citadel Joint Venture Interest Sale Completes]() (pp. 1-2; sale completion and MD comment) ## Business failures and setbacks ### PFS timing extended after completed option studies [roger_mason_pfs_schedule] 2026-09-22 · issuer reported · medium materiality On 22 September 2026 Antipa reported that option studies had been completed and the PFS timing had extended, with release expected in November 2026. No failed project or production shortfall can yet be measured because Minyari remains pre-production. **Attribution:** Role overlaps event; causation unproven. As CEO, Mason is accountable for project scheduling at a high level; the issuer attributes the extension to detailed comparison and optimization work, not misconduct or individual negligence. **Relevance:** Relevant to delivery record and development execution; the schedule change modestly tempers otherwise strong exploration progress. [Minyari PFS Option Studies Update: Optimal Processing and Mine Scheduling Configuration Defined]() (pp. 1-2; workstreams completed and PFS timing) ## Suitability for the current role ### Strong geology and exploration fit; mine delivery remains unproven [roger_mason_role_fit] Current role at cutoff · analyst inference · medium materiality Mason’s long geology, exploration and project-development experience and role as CEO since 2011 fit Antipa’s explorer/PFS stage. This is an analyst inference. The company has not yet demonstrated a producing mine under his Antipa tenure. **Attribution:** Responsibility not applicable. Inference from career and current project stage; it does not imply that exploration success equals operating delivery. **Relevance:** Strong exploration fit; capability in commissioning and operating a mine remains untested in this company. [Annual Report for the year ended 30 June 2024]() (p. 5; career and qualifications); [Interim Financial Report for the half-year ended 31 December 2025]() (p. 4; company’s exploration status); [Minyari PFS Option Studies Update: Optimal Processing and Mine Scheduling Configuration Defined]() (pp. 1-2; PFS stage) ## Evidence gaps - Resource growth is established at company level, but technical estimates identify named competent persons/consultants and do not quantify Mason’s individual causal contribution. No operating production or commissioning result under his Antipa tenure exists in the materials reviewed. - University and AusIMM credentials were not independently verified. Public web searches are not an exhaustive court, criminal, sanctions, employment, safety or environmental check; no clearance conclusion is made. - Exact CEO appointment date is not established; the issuer states he served in the role since its April 2011 listing. - Historical search entries were inherited without an independently verifiable audit trail. Refresh searches were targeted and limited; material former-employer and regulator records have not been exhaustively reviewed.