Stuart Fraser


Mr Fraser has been more than 25 years in strategic, financial, and commercial areas in the energy sector. He has held Leadership roles in numerous transactions including debt financing and restructuring, acquisitions, joint ventures, divestments and reorganisations.

Mr Fraser has executive experience with major energy organisations in the NYSE services sector, most recently, Chief Accounting Officer of Weatherford International.

Mark Wilde

Director - Sales and Marketing

Mr Wilde has over 30 years experience in global sales and marketing of speciality and commodity chemicals, in companies including BASF and Cytec. Prior to joining SO4 Mark was responsible for sales and marketing of ~500ktpa of SOP with Tessenderlo Kerley International, one of the largest SOP producers globally and the world leader in fully water soluble SOP for fertigation applications. Developing and executing a robust Go To Market strategy and Pricing Strategy, Mark and his team achieved a significant increase in EBIT, driven by the growth of the water-soluble volumes from 100ktpa to 220ktpa.

Sian Natasha

Head of People & Capability

Ms Natasha has over 12 years of HR generalist experience working in a senior capacity across the mining, construction, engineering, fintech, robotics, retail, wholesale, and manufacturing industries.
An accredited facilitator for Leadership Development Programs through DDI and TetraMap, a personality profiling tool, Sian is also a member of the Australian Human Resource Institute and Industrial Relations Society of Western Australia.