This presentation has been prepared as a summary only and does not contain all
information about ioneer Ltds (ioneer or the Company) assets and liabilities, financial position and performance, profits and losses, prospects, and the rights and liabilities attaching to ioneer’s securities. The securities issued by ioneer
are considered speculative and there is no guarantee that they will make a return on the capital invested, that dividends will be paid on the shares or that there will be an increase in the value of the shares in the future. ioneer does not
purport to give financial or investment advice. No account has been taken of the objectives, financial situation or needs of any recipient of this presentation. Recipients of this presentation should carefully consider whether the securities
issued by ioneer are an appropriate investment for them in light of their personal circumstances, including their financial and taxation position. Investors should make and rely upon their own enquiries before deciding to acquire or deal in the
Company's securities. Forward Looking Statements Various statements in this presentation constitute statements relating to intentions, future acts and events which are generally classified as “forward looking statements”. These
forward-looking statements are not guarantees or predictions of future performance and involve known and unknown risks, uncertainties and other important factors (many of which are beyond the Company’s control) that could cause those future
acts, events and circumstances to differ materially from what is presented or implicitly portrayed in this presentation. For example, future reserves described in this presentation may be based, in part, on market prices that may vary
significantly from current levels. These variations may materially affect the timing or feasibility of particular developments. Words such as “anticipates”, “expects”, “intends”, “plans”, “believes”, “seeks”, “estimates”, “potential” and
similar expressions are intended to identify forward-looking statements. ioneer cautions security holders and prospective security holders to not place undue reliance on these forward-looking statements, which reflect the view of ioneer only
as of the date of this presentation. The forward-looking statements made in this presentation relate only to events as of the date on which the statements are made. Except as required by applicable regulations or by law, ioneer does not
undertake any obligation to publicly update or review any forward-looking statements, whether as a result of new information or future events. Past performance cannot be relied on as a guide to future performance. : IONR ASX :
INR www.ioneer.com Competent Persons Statement In respect of Mineral Resources and Ore Reserves referred to in this presentation 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 reports titled “Rhyolite Ridge Ore Reserve Increased 280% to 60 million tonnes” dated 30 April 2020 and “Mineral Resource increases by 168% to
3.4 Mt lithium carbonate Underscores growth potential for U.S. supply chain” dated 26 April 2023, released on ASX. Further information regarding the Mineral Resource estimate 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 presentation, 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 “ioneer Delivers Definitive Feasibility that Confirms Rhyolite Ridge as a World-Class Lithium and Boron Project” dated 30 April 2020. 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. No offer of securities Nothing in this
presentation should be construed as either an offer to sell or a solicitation of an offer to buy or sell ioneer securities in any jurisdiction or be treated or relied upon as a recommendation or advice by ioneer. Reliance on third party
information The views expressed in this presentation contain information that has been derived from publicly available sources that have not been independently verified. No representation or warranty is made as to the accuracy, completeness or
reliability of the information. This presentation should not be relied upon as a recommendation or forecast by ioneer. Lithium Carbonate Equivalent The formula used for the Lithium Carbonate Equivalent (LCE) values quoted in this presentation
is: LCE = (lithium carbonate tonnes produced + lithium hydroxide tonnes produced * 0.880 Note All $’s in this presentation are US$’s except where otherwise noted. Disclaimer