Atlantic Operations Overview

Disclaimer This presentation has been prepared by St Barbara Limited ("Company"). The material contained in this presentation is for information purposes only. This presentation is not an offer or invitation for subscription or purchase of, or a recommendation in relation to, securities in the Company and neither this presentation nor anything contained in it shall form the basis of any contract or commitment. This presentation contains forward-looking statements that are subject to risk factors associated with exploring for, developing, mining, processing and the sale of gold. Forward-looking statements include those containing such words as anticipate, estimates, forecasts, should, will, expects, plans or similar expressions. Such forward-looking statements are not guarantees of future performance and involve known and unknown risks, uncertainties, assumptions and other important factors, many of which are beyond the control of the Company, and which could cause actual results or trends to differ materially from those expressed in this presentation. Actual results may vary from the information in this presentation. The Company does not make, and this presentation should not be relied upon as, any representation or warranty as to the accuracy, or reasonableness, of such statements or assumptions. Investors are cautioned not to place undue reliance on such statements. The Company undertakes no obligation to update publicly or release any revisions to these forward-looking statements. This presentation has been prepared by the Company based on information available to it, including information from third parties, and has not been independently verified. No representation or warranty is made as to the accuracy, completeness or reliability of the information. To the maximum extent permitted by law, neither the Company, their directors, employees or agents, advisers, nor any other person accepts any liability, including, without limitation, any liability arising from fault or negligence on the part of any of them or any other person, for any loss arising from the use of this presentation or its contents or otherwise arising in connection with it. Non-IFRS Measures: The Company's results are reported under the International Financial Reporting Standards ("IFRS"). This presentation includes certain non-IFRS financial measures, including cash operating costs, to provide a greater understanding of the Company operations. These measures: may be calculated differently by other companies and should not be used for comparison; and should be used in addition to, and not as a replacement for measures prepared in accordance with IFRS. Financial figures are in Australian dollars unless otherwise noted. Financial year is 1 July to 30 June. This presentation is not audited. Australian Securities Exchange (ASX) Listing code "SBM" American Depositary Receipts (ADR OTC code "STBMY") through BNY Mellon www.adrbnymellon.com/dr profile.jsp?cusip=852278100 Published 5 July 2023 2

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