Our Board and Senior Management

Dr Mark Bennett is a geologist and company director with over 30 years’ experience in mineral exploration and development. He is best known for leading Sirius Resources as Managing Director and CEO from its inception through the discovery and development of the Nova-Bollinger deposit, culminating in its $1.8 billion merger with Independence Group in 2015. He has served as Executive Chairman of S2 Resources since its formation following that merger.

Mark has led or been directly involved in the discovery of several major mineral deposits, including Nova-Bollinger, Thunderbox, and Waterloo, and is a two-time recipient of AMEC’s Prospector Award. His career includes senior roles with LionOre, WMC, and Apex Minerals, with project experience across Australia, West Africa, Canada, and Europe.

In addition to his technical expertise, Mark is highly experienced in corporate affairs, equity capital markets, investor relations, and community engagement. He led Sirius from before the discovery of Nova through feasibility, financing, permitting, construction, and ultimately through the schemes of arrangement to merge with Independence and to demerge S2.

He holds a BSc in Mining Geology from the University of Leicester and a PhD in Geochemistry from the University of Leeds. He is a Fellow of the Australian Institute of Geoscientists and the Geological Society of London, and a Member of both the AusIMM and AICD. He also serves as Non‑Executive Chairman of Falcon Metals and a Director of TSXV-listed Valkea Resources.

Jeff brings over 40 years of professional services and governance experience to the board, having spent most of his career at Ernst & Young, where he held numerous leadership roles focused on the mining, oil and gas, and broader resources industries. He served as Managing Partner for EY’s Western Region and led the Oceania China Business Group, responsible for building key relationships with Chinese corporations operating in Australia.

He is an expert in audit, risk management, corporate finance, and capital transactions, having acted as lead partner on major public company audits, capital raisings and corporate transactions.

Jeff was Non-Executive Chairman of Sirius Resources through to its 2015 takeover by Independence Group, and currently holds directorships across several ASX-listed entities including NRW Holdings, Fleetwood Corporation, and Arrow Minerals.

He holds a Bachelor of Commerce from the University of Western Australia, and is a Fellow of the Institute of Chartered Accountants, the Australian Institute of Company Directors, and the Financial Services Institute of Australasia.

Anna brings over 20 years of corporate finance, governance, and commercial experience within the international resources sector. She joined S2 Resources in August 2022 as a Non-Executive Director after serving as Executive Director and Company Secretary. Prior to that, she played a pivotal role at Sirius Resources as CFO and Executive Director for Corporate & Commercial through its pivotal discovery and merger phases.

Anna began her career with Deloitte in London and Perth, followed by senior finance and company secretarial leadership at LionOre Mining International and other ASX-listed entities including Antipa Minerals and Apex Minerals.

She currently holds the positions of Non-Executive Chair and Chair of Audit and Risk at MLG Oz Limited (ASX: MLG) and Non-executive Director at Tombador Iron Limited (ASX: TI1). She previously also held the position of Non-Executive Director and Chair of Audit and Risk at Spartan Resources Ltd (ASX:SPR) prior to its merger with Ramelius Resources Ltd (ASX:RMS).

Anna holds a Bachelor of Science (Mathematics) from Newcastle University (UK), is a Fellow of the Institute of Chartered Accountants in England & Wales, and is a graduate of the AICD Company Directors Course.

Ms. Betti is an accounting and corporate governance professional with over 20 years' experience in accounting, corporate governance, finance and corporate banking. She has acted as Chief Financial Officer and Company Secretary for a number of companies in the private and publicly listed sectors, as well as senior executive roles in the banking and finance industry. Ms Betti is currently a Director of a corporate advisory company based in Perth that provides corporate and other advisory services to public listed companies.

John is a geologist with over 20 years' experience in gold, nickel and base metal exploration and mining. He was recently General manager - Exploration for Sirius. He holds a BSc (Hons.) in Geology from the University of Tasmania and is a Member of the Australasian Institute of Mining and Metallurgy.

John has worked predominately in Australia and Indonesia with LionOre, INCO and Newexco, and has been involved in the discovery of a number of economic deposits, including the Southern Star gold mine, the Lounge Lizard nickel mine, the Nova-Bollinger Project and most recently the Baloo Gold Deposit.

Andy was general manager resources of Sirius. He is a very experienced geologist, having been geology manager at LionOre’s Thunderbox gold mine and Silver Swan nickel mine, prior to being intimately involved in the resource drillout and estimation for Sirius’ Nova-Bollinger nickel-copper mine. He has a BSc in Geology from the University of Cardiff.