Notes regarding Contingent and Prospective resource estimates 1. Prospective Resources Cautionary Statement - The estimated quantities of petroleum that may potentially be recovered by the application of a future development project(s) related to undiscovered accumulations. These estimates have both an associated risk of discovery and a risk of development. Future exploration, appraisal and evaluation are required to determine the existence of a significant quantity of potentially moveable hydrocarbons. All Prospective Resource volumes presented have been calculated in accordance with Guidelines issued by the Society of Petroleum Engineers in the Petroleum Resource Management System (2018) using probabilistic methods, except totals which are arithmetic. 2. The information that relates to Prospective Resources for Melbana is based on, and fairly represents, information and supporting documentation compiled by Peter Stickland, a director of Melbana. Mr Stickland B.Sc. (Hons) has over 30 years of relevant experience, is a member of the European Association of Geoscientists & Engineers and the Petroleum and Exploration Society of Australia, and consents to the publication of the resource assessments contained herein. The Prospective Resource estimates are consistent with the definitions of hydrocarbon resources that appear in the Listing Rules. 3. Total Liquids = oil + condensate 4. 6 Bcf gas equals 1 MMboe; 1 MMbbl condensate equals 1 MMboe 5. Melbana’s share can be derived by pro-rating the resource ranges by its percentage equity This report is made in accordance with a resolution of the Directors, pursuant to section 298(2)(a) of the Corporations Act 2001 (Cth). On behalf of the Directors Andrew Purcell Executive Chairman 29 September 2026 Governance and Risk continued 44 Melbana Energy Limited Annual Report 2026
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