# Scott Williamson Managing Director, Chief Executive Officer ## Career chronology - **Dates not stated in the source: Blackstone Minerals; Resolute Mining; Perseus Mining** — Previously held professional positions as described by issuer. [Appointment of new CEO and MD]() (30 January 2026 CEO appointment announcement summary.) - **Current at evidence cutoff: Horizon Gold Limited** — Managing Director, Chief Executive Officer. [Appointment of new CEO and MD]() (30 January 2026 CEO appointment announcement summary.) - **Most recent role before Horizon: Blackstone Minerals** — Managing Director. [Appointment of new Chief Executive Officer and Managing Director]() (p.1 lines 19–24) - **Prior role; exact dates not specified: Resolute Mining** — Investor Relations Manager. [Appointment of new Chief Executive Officer and Managing Director]() (p.1 lines 20–23) - **Prior role; exact dates not specified: Euroz Hartleys** — Resources Analyst. [Appointment of new Chief Executive Officer and Managing Director]() (p.1 lines 20–23) ## Personal achievements ### Relevant professional background and qualifications [hrn_scott_williamson_background] Previous career / current appointment; exact periods only where stated · issuer reported · medium materiality Issuer appointment release says 20+ years in mining engineering and corporate roles and identifies prior employers Blackstone Minerals, Resolute Mining and others. **Attribution:** Individual involvement documented. This is an issuer-published career summary; it is not independent verification of every claimed contribution. **Relevance:** The disclosed roles and qualifications bear on the executive’s managing director, chief executive officer responsibilities. [Appointment of new CEO and MD]() (announcement summary) ## Governance and interests ### CEO appointment and board-to-exploration transition are dated [hrn_scott_appointment_reconciliation] 30 Jan–2 Feb 2026 · issuer reported · medium materiality Horizon announced Williamson as CEO/MD effective 2 Feb 2026 and said Leigh Ryan would resign as director that date and transition to GM Exploration; Ryan had served as MD since Dec 2020. Williamson was also a NED of Leeuwin Metals and Corazon Mining, and his Blackstone resignation was effective 31 Jan 2026. **Attribution:** Individual involvement documented. This is a dated issuer disclosure; it documents role changes and concurrent directorships, not a governance breach. **Relevance:** Clarifies current responsibility and transition overlap. [Appointment of new Chief Executive Officer and Managing Director]() (p.1 lines 6–34) ## Suitability for the current role ### Current role relevance is supported at title level [hrn_scott_williamson_role_fit] At evidence cutoff · analyst inference · medium materiality Analyst inference: the disclosed current title indicates experience relevant to the assigned function. The record reviewed does not establish individual delivery outcomes or independently verify credentials beyond the cited issuer disclosure. **Attribution:** Responsibility not applicable. This is an analytical role-fit judgment, not a claim of proven performance. **Relevance:** Current role scope is directly relevant to team composition; evidence of delivery remains limited. [Appointment of new CEO and MD]() (30 January 2026 CEO appointment announcement summary.) ## Evidence gaps - Independent verification of the complete career chronology, education and professional memberships is not established by the sources reviewed. - No comprehensive regulator, court, safety, environment or litigation-record review was completed; absence of a finding here is not a clearance. - Individual contribution to employer outcomes and concurrent board interests require additional source-level verification.