Announcement PDF ASX Announcement 10 July 2025 ASX: OD6 Gulf Creek Copper Project – Finalisation of NSW Resources Regulator Investigation OD6 Metals Limited (OD6 or the Company) confirms the finalisation of a NSW Resources Regulator investigation in connection with the Gulf Creek Copper Project (Gulf Creek) Further to the Company’s ASX announcements of 21 March 2025 and 5 May 2025, the Company confirms that the NSW Resources Regulator (Regulator) has completed its investigation of alleged contraventions of sections 378D(1) of the Mining Act 1992 (NSW) (Mining Act) and has advised the Company of the Investigation Outcome. The Regulator has determined that a number of official cautions and penalty notices are appropriate in relation to the alleged offences by the Company’s wholly owned subsidiary Gulf Creek Copper Pty Ltd (Gulf Creek Copper). A total penalty of $7,500 is payable. Pursuant to section 378K of the Mining Act, by making payment of the penalty prescribed, Gulf Creek Copper will not be liable to any further proceedings. The Company intends to make payment of the amounts specified and the Company considers the Regulator’s investigation concluded. With the Regulator’s investigation now at an end, the Company is in a position to continue exploration activities at Gulf Creek in accordance with its approval for an initial 18 RC and diamond holes totaling ~5,000m (refer ASX release 22 May 2025) and additional 7-hole, ~2,500m Phase 2 drill campaign (refer ASX release 11 June 2025). Brett Hazelden, Managing Director, commented: “OD6 has worked positively with the NSW Resource Regulator, which noted Gulf Creek Copper’s co-operation during their investigation process. With the Regulator’s investigation concluded, and with the recent Phase 2 drilling approvals now in place, the Company can confidently undertake works at the Big Bend, North West and West Limb targets, plus follow up deep drilling below the historic mining area at Gulf Creek. This follows on from the recent maiden drilling results, which confirmed the presence of high-grade copper, zinc and silver at the Gulf Creek Copper Project .” This announcement has been authorised for release by the Board of OD6 Metals Limited 1 About OD6 Metals OD6 Metals is an Australian public company pursuing exploration and development opportunities within the critical minerals sector, namely rare earths and copper. Copper The Company is advancing the recently acquired Gulf Creek Copper-Zinc VMS Project located near the town of Barraba in NSW, Australia. Gulf Creek was mined at around the turn of the 20th century and was once regarded as the highest grade copper mine (2% to 6.5% Cu) in NSW until its closure due to weak copper prices in 1912. Very little exploration has occurred at the project i n over 100 years, with OD6 aiming to apply modern day exploration technologies. Mineralisation is associated with magnetite, with geophysics showing significant greenfields and brownfields exploration potential exists with over >3km of untested strike in the immediate mine-stratigraphy, and over >10km across the tenement. Rare Earth Elements OD6 Metals has successfully identified clay hosted rare earths at its 100% owned Splinter Rock Project which is located in the Esperance-Goldfields region of Western Australia. The Company released a Mineral Resource Estimate (MRE) for Splinter Rock in May 2024, confirming that the project hosts on of the largest and highest-grade clay-hosted rare earths deposit in Australia with an Indicated Resource of 119Mt @ 1,632ppm TREO and an Inferred Resource of 563Mt @ 1,275ppm TREO with an overall ratio of ~23% high -value Magnetic Rare Earths (MagREE). OD6 Metals believes that Splinter Rock has all the hallmarks of a world class rare earths project with a conceptual development which utilises the large and high-grade Splinter Rock resource to support a long-life REE operation supported by a low strip ratio Corporate Directory Managing Director Mr Brett Hazelden Non-Executive Chairman Non-Executive Director Non-Executive Director Dr Darren Holden Mr Piers Lewis Dr Mitch Loan Financial Controller/ Joint Company Secretary Joint Company Secretary Mr Troy Cavanagh Mr Joel Ives Contact Investor Relations OD6 Metals Ltd Lucas Robinson ACN 654 839 602 www.od6metals.com.au Mail to: info@od6metals.com.au Corporate Storytime lucas@corporatestorytime.com Phone: +61 408 228 889 Phone: +61 8 6189 8515 Level 1, 50 Kings Park Road, West Perth, WA 6005 PO Box 277, North Beach, WA 6920 PO Box 2009, Esperance, WA 6450 2 No new information This announcement contains references to the Mineral Resource Estimate (Estimate) of the Splinter Rock Project, that was announced on 29 May 2024. The Company confirms that it is not aware of any new information and that all material assumptions and technical parameters underpinning the Estimate in the relevant market announcement continue to apply and have not changed materially. Forward Looking Statements Certain information in this document refers to the intentions of OD6 Metals, however these are not intended to be forecasts, forward looking statements, or statements about the future matters for the purposes of the Corporations Act or any other applicable law. Statements regarding plans with respect to OD6 Metals projects are forward looking statements and can generally be identified by the use of words such as ‘project’, ‘foresee’, ‘plan’, ‘expect’, ‘aim’, ‘intend’, ‘anticipate’, ‘believe’, ‘estimate’, ‘may’, ‘should’, ‘will’ or similar expressions. There can be no assurance that the OD6 Metals plans for its projects will proceed as expected and there can be no assurance of future events which are subject to risk, uncertainties and other actions that may c ause OD6 Metals actual results, performance, or achievements to differ from those referred to in this document. While the information contained in this document has been prepared in good faith, there can be given no assurance or guarantee that the occurrence of these events referred to in the document will occur as contemplated. Accordingly, to the maximum extent permitted by law, OD6 Metals and any of its affiliates and their directors, officers, employees, agents and advisors disclaim any liability whether direct or indirect, express or limited, contractual, tortuous, statutory or otherwise, in respect of, the accuracy, reliability or completeness of the information in this document, or likelihood of fulfilment of any forward -looking statement or any event or results expressed or implied in any forward-looking statement; and do not make any representation or warranty, express or implied, as to the accuracy, reliability or completeness of the information in this document, or likelihood of fulfilment of any forward-looking statement or any event or results expressed or implied in any forward-looking statement; and disclaim all responsibility and liability for these forward -looking statements (including, without limitation, liability for negligence). 3