Stuart Tonkin

Former Managing Director and Chief Executive Officer of Northern Star Resources Ltd (2013-2026, MD title from Jul 2021), stepping down during Q1 FY27 after 13 years leading the company through transformative growth (Saracen Minerals Holdings merger, De Grey Mining acquisition) amid real, sustained KCGM production challenges. A mining engineer with 25+ years of underground hard-rock experience; before Northern Star, Chief Operating Officer of mining contractor Barminco, and earlier held senior operational positions with Oxiana Limited and Newmont Corp in Western Australia (as a Production Engineer), though no specific title or date range for the Oxiana/early Newmont roles could be confirmed to a primary-source standard this pass.