Ioneer Ltd.

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Ioneer (ASX: INR | NASDAQ: IONR) is an emerging U.S. lithium-boron producer advancing the fully permitted, construction-ready Rhyolite Ridge Project in Nevada.

A play on "ion" and "pioneer," our name reflects our mission to lead in the production of critical materials for clean energy and modern technologies. Our unique, dual-revenue flagship project combines lithium and boron from a rare geological formation. Once operational, Rhyolite Ridge will be the first new U.S. lithium producer in over 60 years and the first new boron producer in over a century, expected to power upward of 75 million electric vehicles and strengthening the domestic EV battery supply chain. At Ioneer, we are committed to responsible mining with a minimal environmental footprint, prioritizing environmental stewardship while producing two essential materials for a more sustainable future.

21/10/2026

In April 2026, 35 Tiehm's buckwheat plants from Ioneer's greenhouse in Nevada were transplanted to an approved introduction site as part of efforts to establish a new population of the species. The move followed approvals from the Bureau of Land Management and the U.S. Fish and Wildlife Service.

Ioneer reported that the plants have shown strong survival and early growth.

Read the full quarterly report: ordnl.link/kPGoL2u

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18/10/2026

Ahead of construction, the Rhyolite Ridge process underwent extensive testing.

Ioneer invested over $10 million in metallurgical test work and piloting. A pilot plant operated at Kemetco Research, processing over 30 tonnes of Rhyolite Ridge ore through a continuous simulation of the process flowsheet. In total, Ioneer has spent over $220 million to date on Rhyolite Ridge project development.

Construction has not started, but the process has already been tested at pilot scale.

Learn more: ordnl.link/JMX2eTW

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14/10/2026

Bernard Rowe co-founded Ioneer (originally named Global Geoscience) in 2001 and has served as Managing Director since 2007.

He led the company through its 2007 listing on the ASX and remained at the helm as Global Geoscience became Ioneer in 2018. Today, he continues to serve as Ioneer’s Managing Director and CEO.

Learn more: ordnl.link/pHv09mu

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12/10/2026

Rhyolite Ridge’s Stage 1 project is focused on processing searlesite-bearing lithium-boron ore.

The deposit remains open, but in addition to searlesite, there are additional lithium-boron ore types found at Rhyolite Ridge that represent future expansion opportunities beyond Stage 1. In the first half of 2026, EcoPro completed research into processing lithium-clay material found at the site. Its final report includes a process flow sheet developed with commercially feasible operating costs.

Read the full half-year report: ordnl.link/XQBKNJp

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06/10/2026

How do nations share responsibility for materials modern life depends on?

In February 2026, the U.S. State Department gathered representatives from 54 countries and the European Commission to answer that question. No single country can supply the metals inside batteries, solar panels, and steel alloys alone. At the meeting, EXIM announced that it had issued US$14.8 billion in Letters of Interest for critical minerals projects worldwide. One shared resource problem, brought to one table.

Rhyolite Ridge is already part of this broader push, supported by a US$996 million DOE loan.

Read the full statement: ordnl.link/cBAvobh

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05/10/2026

Rhyolite Ridge’s Ore Reserve represents the portion of its Measured and Indicated Mineral Resource demonstrated to be economically mineable after the application of modifying factors.

The project’s Ore Reserve grew from 60 million tonnes in the 2020 Definitive Feasibility Study to 265.5 million tonnes as of October 2025—more than four times its 2020 level.

Learn more: ordnl.link/xdc6aJd

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30/09/2026

📩 With our permitted, construction-ready Rhyolite Ridge Lithium-Boron Project, we're taking strategic steps to deliver long-term value to shareholders.

Stay up to date on our latest news and insights. Subscribe to our newsletter: ordnl.link/haSIA33

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28/09/2026

Boron is used in more than 300 applications, from agriculture and glass manufacturing to defense communications, missile and aerospace systems, semiconductors, nuclear technology, and armor and ballistics, according to Ioneer's May 2026 investor presentation. Rhyolite Ridge hosts the largest undeveloped boron reserve outside Turkey and is the only fully permitted, construction-ready project in the U.S. that will mine and process two critical minerals..

Learn more: ordnl.link/uVe9AFX

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24/09/2026

Rhyolite Ridge is a sediment-hosted lithium-boron deposit associated with Searlesite, a boron-bearing mineral. According to Ioneer's May 2026 investor presentation, it is one of only two major lithium-boron reserves known in the world and the only known one associated with Searlesite. Its unique geology supports the mining and processing of lithium and boron together at Rhyolite Ridge.

Learn more: ordnl.link/VNsIpGa

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23/09/2026

Battery-grade lithium carbonate and lithium hydroxide prices rose 14% in the second quarter of 2026, according to Ioneer's latest quarterly report. The company expects lithium prices to strengthen into the early 2030s as the market moves into deficit, around the same time Rhyolite Ridge is expected to begin production.

Read the full report: ordnl.link/1oWkAHg

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Address

Suite 16. 01 Level 16, 213 Miller Street
North Sydney, NSW
2060

Website

https://www.ioneer.com/, http://linkedin.com/company/ioneer

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