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ioneer Ltd

For the period ended Oct 27, 2026. Filed Oct 27, 2026.

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What a company based outside the US has published at home or sent to its shareholders. It is how many foreign companies share results and news between annual reports.

Oct 27, 2026 · Filed Oct 27, 2026

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IONR$2.60+2.0%Stored close · as of Nov 6, 2026
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EX-99.1 · Competent Persons Statement

Competent Persons Statement

In respect of Mineral Resources and Ore Reserves referred to in this report and previously reported by the Company in accordance with JORC Code 2012, the Company confirms that it is not aware of any new information or data that materially affects the information included in the public report titled “Further Leach Optimisation Enhances Project Economics” dated 29 October 2025, released on ASX. Further information regarding the Mineral Resource estimate and Ore Reserve can be found in that report. All material assumptions and technical parameters underpinning the estimates in the report continue to apply and have not materially changed.

In respect of production targets referred to in this report, the Company confirms that it is not aware of any new information or data that materially affects the information included in the public report titled “Further Leach Optimisation Enhances Project Economics” dated 29 October 2025. Further information regarding the production estimates can be found in that report. All material assumptions and technical parameters underpinning the estimates in the report continue to apply and have not materially changed.

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