Northern Star Resources Executive and Leadership Team

June, 2026

Leadership Overview

Northern Star Resources has 4 executives leading key functions including strategy, finance, operations, and legal.

Driven by operational excellence, Northern Star Resources is committed to sustainable mining practices, prioritizing safety, environmental stewardship, and positive relationships with local communities and Indigenous stakeholders.

Leadership Roles at Northern Star Resources

  • Managing Director & Chief Executive Officer - Stuart Tonkin
  • Chief Financial Officer - Ryan Gurner
  • Chief Operating Officer - Kalgoorlie - Simon Jessop
  • Chief Legal Officer & Company Secretary - Hilary Macdonald
  • Stuart Tonkin - Managing Director & Chief Executive Officer

    Stuart Tonkin, the Managing Director & Chief Executive Officer at Northern Star Resources, directs the company's overall strategy and operational execution. Tonkin oversees the company's extensive portfolio of gold mining operations across Western Australia and Alaska, ensuring alignment with growth objectives and market demands. This leadership role involves driving organic growth and integrating strategic acquisitions to expand the company's resource base and production capacity. Tonkin's focus includes optimizing operational efficiency through advanced mining technologies and processing techniques, directly impacting gold recovery and cost management. By maintaining a robust pipeline of development projects, Stuart Tonkin ensures the company's long-term viability and competitive positioning in the global gold mining sector. The Chief Executive Officer's responsibilities extend to fostering strong corporate governance standards and transparent reporting practices, crucial for maintaining investor confidence and market standing.
    Stuart Tonkin

    Ryan Gurner - Chief Financial Officer

    Ryan Gurner, the Chief Financial Officer at Northern Star Resources, manages the company's financial strategy and fiscal operations. Gurner is responsible for financial planning, capital allocation, and ensuring the company's financial health across its Australian and Alaskan mining operations. This role involves overseeing budgeting, forecasting, and managing financial risks associated with commodity prices and operational expenditures. Gurner's expertise is critical in supporting strategic acquisitions and organic growth initiatives by providing sound financial analysis and guidance. The Chief Financial Officer ensures compliance with corporate governance standards and transparent financial reporting to stakeholders. By optimizing financial performance and managing costs effectively, Ryan Gurner directly contributes to the company's profitability and its ability to invest in exploration and development projects, thereby securing long-term value creation.

    Simon Jessop - Chief Operating Officer - Kalgoorlie

    Simon Jessop, the Chief Operating Officer - Kalgoorlie at Northern Star Resources, directs the operational execution of the company's flagship mining complexes in the Kalgoorlie region. Jessop oversees both underground and open-pit mining activities, ensuring efficient production and adherence to safety protocols. This leadership position involves implementing advanced mining technologies and processing techniques to optimize gold recovery and operational efficiency. Jessop's responsibilities include managing day-to-day operations, driving productivity improvements, and ensuring the effective utilization of modern processing facilities. By focusing on operational excellence, Simon Jessop directly supports the expansion of the company's resource base and production capacity within this critical gold region. The Chief Operating Officer's role is vital in maintaining Northern Star's position as a leading gold producer through disciplined operational management and strategic resource development.
    Hilary Macdonald, the Chief Legal Officer & Company Secretary at Northern Star Resources, provides strategic legal counsel and oversees corporate governance. Macdonald manages all legal affairs, ensuring compliance with regulatory requirements across Australia and Alaska. This role involves advising on contracts, litigation, and corporate law, safeguarding the company's interests. As Company Secretary, Macdonald ensures adherence to corporate governance standards and facilitates communication between the board of directors and stakeholders. Hilary Macdonald plays a crucial part in managing relationships with local communities and Indigenous stakeholders, ensuring sustainable and responsible mining practices. The Chief Legal Officer's expertise is essential for navigating the complex legal landscape of the mining industry and supporting the company's strategic objectives and operational integrity.
    Hilary Macdonald

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    Frequently Asked Questions Regarding Northern Star Resources Top Executives and Leadership Team

    Who leads Northern Star Resources?
    Northern Star Resources is led by Stuart Tonkin (Managing Director & Chief Executive Officer), along with executives such as Ryan Gurner (Chief Financial Officer) and Simon Jessop (Chief Operating Officer - Kalgoorlie).
    Who is part of Northern Star Resources’s executive team?
    The executive team of Northern Star Resources includes leaders such as Stuart Tonkin (Managing Director & Chief Executive Officer), Ryan Gurner (Chief Financial Officer), Simon Jessop (Chief Operating Officer - Kalgoorlie) and other senior executives.
    How many executives does Northern Star Resources have?
    Northern Star Resources has 4 executives leading key business areas.
    What roles are included in Northern Star Resources’s leadership team?
    The leadership team of Northern Star Resources includes roles such as Managing Director & Chief Executive Officer, Chief Financial Officer, Chief Operating Officer - Kalgoorlie, Chief Legal Officer & Company Secretary.