Northern Star Resources Executive and Leadership Team

Stuart Tonkin, the Managing Director & Chief Executive Officer at Northern Star Resources, directs the overarching corporate strategy for global gold mining operations. Tonkin architects the long-term vision for asset development across Australia and North America, ensuring alignment between exploration goals and production targets. By managing the executive leadership team, the Managing Director & Chief Executive Officer maintains focus on operational excellence and shareholder value. This role involves constant engagement with the Board to refine capital allocation strategies and mitigate risks inherent in large-scale mining projects. Stuart Tonkin drives the company toward sustainable growth by optimizing the portfolio of high-quality mining assets. Through rigorous oversight of extraction processes, the Managing Director & Chief Executive Officer secures the competitive position of the firm within the global gold market. Strategic decision-making remains central to the daily responsibilities, fostering a culture of safety and efficiency across all regional mining sites.

Ryan Gurner, the Chief Financial Officer at Northern Star Resources, manages the fiscal health and capital structure of the global mining enterprise. Gurner oversees financial reporting, treasury functions, and investor relations to ensure transparency and market confidence. By analyzing the economic viability of open-pit and underground mining projects, the Chief Financial Officer provides critical data for strategic investment decisions. Ryan Gurner drives the financial planning process, balancing the costs of exploration with the revenue generated from gold production in Australia and North America. This leadership role requires close collaboration with the Board to maintain a robust balance sheet capable of supporting future development. Through disciplined cost management and capital allocation, the Chief Financial Officer protects the financial integrity of the organization. Gurner ensures compliance with international accounting standards while optimizing tax strategies to maximize returns on mining assets across diverse geographic regions.

Simon Jessop, the Chief Operating Officer - Kalgoorlie at Northern Star Resources, directs the technical and operational execution of mining activities within the Kalgoorlie region. Jessop architects efficient extraction workflows, focusing on the optimization of underground mining assets to meet production quotas. By managing site-level performance, the Chief Operating Officer - Kalgoorlie ensures that safety protocols and environmental standards remain at the forefront of daily operations. Simon Jessop drives productivity improvements through the implementation of advanced mining technologies and streamlined logistics. This role involves coordinating with regional teams to resolve technical challenges and maintain consistent output levels. Through the oversight of local mining infrastructure, the Chief Operating Officer - Kalgoorlie supports the broader corporate objective of maximizing gold recovery. Jessop maintains operational continuity by aligning site activities with the strategic goals established by the executive leadership team, ensuring that the Kalgoorlie assets contribute effectively to the global production portfolio.

Hilary Macdonald, the Chief Legal Officer & Company Secretary at Northern Star Resources, manages the legal framework and corporate governance standards for the global mining company. Macdonald architects compliance strategies that address the regulatory requirements of mining operations in Australia and North America. By overseeing contract negotiations and risk management, the Chief Legal Officer & Company Secretary protects the interests of the firm during complex asset acquisitions and exploration ventures. Hilary Macdonald drives the governance agenda, ensuring that Board processes and shareholder communications adhere to strict legal mandates. This role involves providing counsel on environmental regulations and land access rights, which remain critical to the success of mining projects. Through the management of corporate records and regulatory filings, the Chief Legal Officer & Company Secretary maintains the integrity of the organizational structure. Macdonald ensures that all business activities align with legal obligations, thereby mitigating potential liabilities and supporting the long-term stability of the company.