Mr Columbus has over 15 years’ experience as managing director and main board Director for Clarke Energy Limited, a privately owned multinational company involved in the sale, engineering, installation and maintenance of power plants that utilise gas compressors and gas engines. Clarke Energy is a wholly owned company of the Kohler Group and operates in over 28 countries today. He was also Chairman of Warrego Energy Limited (ASX:WGO), an oil and gas exploration company with assets in Western Australia and Spain. Warrego’s main asset is a 50% interest in the West-Erregulla gas discovery in Western Australia. Warrego was acquired in 2023 by Hancock Energy for a cost of around $440m. Additionally, Greg was formerly Non-executive Chairman of Talon Energy Limited (ASX:TPD) until its acquisition by Strike Energy Limited in December 2023 for a cost of around $140m and is currently a Director of the Port Adelaide Football Club.
David Casey has over 30 years’ experience in the oil and gas sector and was the former Managing Director and CEO of Eastern Star Gas Limited (ESG) where he was instrumental in the appraisal, development and commercialisation of the Narrabri Gas Project in Northern NSW. ESG grew to be an ASX 200 company until it was taken over by Santos Limited for $924 million. Mr Casey was CEO Australia and Asia Pacific at Warrego Energy Limited, and a former Managing Director and non-executive director of Talon Energy Limited.
Mr Worner is a former lawyer, with extensive experience in the oil and gas sector having worked in various legal, commercial and Company Secretarial positions with ASX listed companies. He is formerly a Non-executive Director of Talon Energy Limited (ASX:TPD), Patriot Lithium Limited (ASX:PAT) and currently a Non-executive Director of RBR Group Ltd (ASX:RBR) and Wolf Mining Pty Ltd. Mr Worner is also a Partner at VECTOR Advisors, a boutique corporate communication, investor relations and reputation management firm.
Mr. Gerard Ryan holds Petroleum and Mechanical engineering degrees and has over 25 years of experience in drilling, petroleum engineering, and production operations. He has held several senior management positions including COO for Eastern Star Gas and Galilee Energy. He is a Chartered Professional Engineer and a lifetime member of the Society of Petroleum Engineers.
Ms. Wates is a Principal in the professional services division of Automic Group with over 15 years’ experience providing corporate advisory and company secretarial services, including capital raising, compliance, governance and valuation advice. Ms. Wates has advised on a number of successful ASX listings as well as being involved in various secondary and seed capital raisings for public and private companies. She has acted as Company Secretary for several ASX listed companies and is a chartered accountant and senior associate of FINSIA.
Mr Zetzman has over 30 years’ experience working in the energy exploration sector. John was among the first to identify the shale potential in South Africa. In Mr Zetzman was involved in submitting the first application for a large-scale exploration right focussed on shale. He was integral to the identification and application for the exploration right now held by Renergen Limited, which is now the first onshore Production Right in South Africa.
Mr Ranoszek is an experienced leader in the oil and gas exploration and production sectors. He has over 30 years’ experience having served as Managing Director and Country Manager for several large US independent oil and gas production companies in South Africa, including Anadarko, Pioneer Natural Resources as well as Asset Manager and Services Manager for Total Energies EP in South Africa.
Daphne holds an MBA from the University of Stellenbosch Business School and a Bachelor of Commerce in Accounting from the University of the Western Cape. She is a member of the South African Institute of Professional Accountants (SAIPA) and brings a strong combination of financial rigour, regulatory expertise and commercial focus to D3 Energy’s South African operations.
Daphne is the Country Manager of D3 Energy South Africa. With more than 25 years’ experience in the oil and gas sector, she leads the company’s in-country strategy and execution across its onshore gas and helium portfolio in the Free State.
She is responsible for securing and advancing tenure, managing regulatory processes and overseeing stakeholder and government engagement. Daphne also leads governance, financial oversight and operational coordination, ensuring disciplined delivery within South Africa’s complex legislative framework.
Prior to joining D3 Energy South Africa, she served as Chief Financial Officer at iMbokodo Exploration and Production and held senior finance and commercial roles with Anadarko South Africa and Pioneer Natural Resources. Her experience spans capital oversight, board reporting, statutory compliance, audit management and strategic planning within multinational upstream businesses.
Tshadi is the Community & Stakeholder Coordinator at D3 Energy South Africa. She supports the company’s in-country operations through stakeholder engagement, community interface and human resources administration across its onshore gas projects in the Free State.
Tshadi holds a Bachelor of Social Science in Human and Societal Dynamics from the University of the Free State and is currently completing a Bachelor of Social Work through UNISA. She brings experience in HR administration, employee relations, labour compliance and training coordination, having previously served as an HR Assistant within a structured corporate environment.
Her background also includes community-based social work support and public sector experience, strengthening her ability to engage constructively with local stakeholders and support responsible project development. Tshadi is committed to fostering transparent engagement, building trusted community relationships and contributing to sustainable project delivery.
