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Ioneer Ltd filings document a foreign private issuer focused on the Rhyolite Ridge Lithium-Boron Project in Nevada. Its Form 6-K reports include quarterly activity reports, press releases, governance statements, annual general meeting notices, and exhibits describing project development, federal permitting, court decisions affecting the mine plan, equity financing, and technical reporting under Subpart 1300 of Regulation S-K.
The filing record also covers ASX Corporate Governance Council disclosures, Appendix 4G cross-references, board oversight practices, shareholder meeting procedures, proxy voting matters, and capital-structure updates related to ordinary share issuances and project funding.
Ioneer Ltd reported an interim net loss of $4.0 million for the six months ended 30 June 2026, similar to the prior six‑month loss of $4.1 million. The business remains in the development stage with no operating revenues, focused on the Rhyolite Ridge lithium‑boron project in Nevada.
Cash and cash equivalents increased to $58.8 million, driven by a $50.4 million equity capital raise that lifted issued capital to 3.07 billion shares and net assets to $276.7 million. Exploration and evaluation assets rose to $214.7 million, mainly at Rhyolite Ridge, and the group continues to prepare for a future Final Investment Decision.
The U.S. Bureau of Land Management’s favourable Record of Decision for Rhyolite Ridge was upheld by a U.S. District Court, and an appeal to the Ninth Circuit is in progress. Ioneer also discloses an undrawn $996 million U.S. Department of Energy loan facility and states the accounts are prepared on a going‑concern basis with no material uncertainties identified.
Ioneer Ltd reported June 2026 quarter activities and cash of US$58.84 million as it advances its 100%-owned Rhyolite Ridge Lithium-Boron Project in Nevada. The company entered non-binding MOUs with Korea’s KIND and Hyundai Engineering, under which KIND may consider an equity investment and Hyundai may provide procurement-related services; Goldman Sachs is assisting a strategic partnering process targeted to conclude in Q3 2026.
Permitting advanced with a U.S. District Court decision on 27 March 2026 upholding federal approvals; environmental groups have appealed to the Ninth Circuit, and the company states this appeal is not expected to delay construction. Ioneer maintained compliance with Nevada environmental permits and reported no lost-time injuries. Conservation work for Tiehm’s buckwheat progressed, with successful transplanting and strong early plant survival.
Ioneer completed a pre-feasibility study confirming feasibility of producing battery-grade lithium carbonate and is 95% through a boron carbide plant pre-feasibility study. A conditional long-term land-lease award was received from the U.S. Army for a boron products facility at Tooele Army Depot. Quarterly operating cash outflow was US$1.45 million and capitalised exploration and evaluation spend was US$2.49 million, giving an estimated funding runway of 14.9 quarters. The company had 3.07 billion ordinary shares and 77.3 million performance rights on issue at period-end.
Ioneer Ltd reported that it has signed non-binding Memorandums of Understanding with Korea’s public infrastructure institution KIND and Hyundai Engineering to advance the Rhyolite Ridge Lithium-Boron Project in Nevada. KIND is considering an equity investment in the project, while Hyundai Engineering is considering providing procurement-related activities.
Ioneer has invested more than US$220 million in Rhyolite Ridge and completed over 70% of advanced engineering. The project is described as the only known lithium-boron reserve in North America and is expected to support 275–300 permanent jobs once operational. The company highlights a previously closed US$996 million U.S. Department of Energy loan and earlier offtake agreements with Ford, Prime Planet Energy & Solutions and EcoPro Innovation as part of the project’s commercial foundations.
The company emphasizes that these MOUs are non-binding and do not create legally enforceable obligations for KIND or Hyundai Engineering, and there is no certainty that definitive agreements or investments will follow.
ioneer Ltd Vice President Human Resources Kenneth D. Coon reported an open-market sale of 113,899 Ordinary Shares on July 2, 2026. According to the footnotes, the shares were sold for tax purposes related to vesting of performance units on July 1, 2026, at approximately AUD$0.1550 per share. Following the transaction, he holds 3,475,989 Ordinary Shares directly.
ioneer Ltd senior vice president of engineering operations Matthew Weaver reported an open-market sale of 251,293 Ordinary Shares on July 2, 2026. A footnote explains the shares were sold for tax purposes in connection with the vesting of performance units on July 1, 2026. After this transaction, Weaver directly holds 11,299,711 Ordinary Shares, indicating he retained the vast majority of his position.
ioneer Ltd Vice President of Corporate Development and External Affairs Chad Yeftich reported an open-market sale of 706,781 Ordinary Shares at $0.11 per share on July 2, 2026. A footnote explains these shares were sold for tax purposes in connection with the vesting of performance units on July 1, 2026.
Following this transaction, Yeftich directly holds 6,386,671 Ordinary Shares. The filing characterizes the sale as related to equity compensation rather than a discretionary change in ownership.
ioneer Ltd reported that VP Corp Dev & External Affairs Chad Yeftich acquired 203,751 Ordinary Shares as a compensation-related award. The shares were recorded at a price of $0.00 per share, indicating they were granted rather than bought in the open market.
According to a footnote, this reflects the conversion of 203,751 performance units into the right to receive an equal number of Ordinary Shares on July 1, 2026. After this award, Yeftich directly holds a total of 7,093,452 Ordinary Shares.
ioneer Ltd reported that Vice President of Human Resources Kenneth D. Coon acquired 150,926 ordinary shares on July 1, 2026 through a grant or award. This reflects performance units converting into the right to receive an equal number of ordinary shares. Following this transaction, Coon directly holds 3,589,888 ordinary shares.
ioneer Ltd reported that VP Commercial Sales & Marketing Nagai Yoshio acquired 159,982 Ordinary Shares on July 1, 2026 as a grant/award at no cash cost. The shares resulted from the conversion of 159,982 performance units into an equivalent right to receive Ordinary Shares, bringing his direct holdings to 8,095,472 shares.
ioneer Ltd senior vice president of engineering operations Matthew Weaver reported a compensation-related share award. On July 1, 2026, he acquired 391,277 Ordinary Shares at no cash cost, following the conversion of 391,277 performance units into the right to receive the same number of shares. After this award, he directly holds 11,551,004 Ordinary Shares.