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Appendix: Technical Expert Report - Resource Disclosures - - - - - - Contingent and Prospective Resource estimates for EP 161 and EP 136 were assessed as of 31 January 2021. Tamboran confirms that it is not aware of any new information or data that materially affects the information included and that all the material assumptions and technical parameters supporting the estimates continue to apply and have not materially changed. Petroleum resources are classified in accordance with the Petroleum Resource Management System (PRMS) sponsored by the Society of Petroleum Engineers (SPE). Contingent Resources have been categorised and reported as 1C, 2C and 3C. An arithmetic summation by category (that is 1C, 2C and 3C) has been used to represent Contingent Resources. For prospective resources, the general cumulative terms low/best/high estimates apply and are used to estimate the resulting 1U/2U/3U quantities. No specific terms are defined for incremental quantities within prospective resources Prospective Resources reported are the estimated Prospective Resource quantities of petroleum that may potentially be recovered by the application of future development projects related to undiscovered accumulations. These estimates have both an associated risk of discovery and a risk of development. Further exploration, appraisal and evaluation is required to determine the existence of a significant quantity of potentially moveable hydrocarbons. Tamboran owns a 25 percent working interest in exploration permit 161 and will own a 100% working interest in exploration permit 136. Both permits are located in the Mcarthur Basin, Northern Territory, Australia. Probabilistic methods were used to estimate the contingent resources. The key contingencies are listed in the last paragraph of page 1 of the report. The further appraisal, drilling and evaluation work to be undertaken is also outlined in the contingent resources section of the report. The estimates of Contingent and Prospective Resources in the permits contained in the report were prepared by Netherland, Sewell and Associates Inc., qualified resource evaluators. The resource assessment was independently carried out by Scott Rees III, Chairman and CEO, Joseph M Wolfe, Vice President, and John G Hattner, Senior Vice President or Netherland, Sewell and Associates Inc., in accordance with the SPE-PRMS guidelines. Hattner and Wolfe meet the requirements of Qualified Petroleum Reserve and Resource Evaluator as defined in Chapter 19 of the ASX Listing Rules. Mr Hattner is a Licensed Professional Geophysicist in the State of Texas, USA and Mr Wolfe is a Licensed Professional Engineer in the State of Texas, USA. Hattner and Wolfe have consented to the use of the resource estimates figures in the form and context in which they appear in this release. Mr Hattner has over 39 years of relevant experience. His qualifications include an MBA from Saint Mary's College of California, Master of Science in Geological Oceanography, Florida State University, and a Bachelor of Science in Geology from University of Miami. Mr Wolfe has over 15 years of relevant experience. His qualifications include a Master of Petroleum Engineering from Texas A&M and a Bachelor of Science in Mathematics from Northwestern State University. 18

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