Conference presentation notification 5th May 2026

In brief · summary, not quotable

Altona Rare Earths PLC announced that its CEO and CFO will present at the Precious Metals & Critical Minerals Virtual Investor Conference on May 5th, 2026, offering investors an opportunity for live questions and one-on-one meetings. This follows recent positive developments including a US$1.9 million grant from USTDA for the Monte Muambe rare earths prefeasibility study, which has a resource of 13.6 million tons at 2.42% Total Rare Earths Oxide, and the commencement of cross-trading on the OTCQB exchange. The company also completed resource drilling for its Monte Muambe fluorspar and gallium project, with assay results received and a JORC mineral resource estimate imminent, alongside the discovery of heavy rare earths enrichment.

Full announcement

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Altona (LSE: REE, OTCQB: ANRCF), a resource exploration and development company focused on critical raw materials in Africa, is pleased to announce that CEO Cedric Simonet and CFO Louise Adrian will present live at the Precious Metals & Critical Minerals Virtual Investor Conference hosted by VirtualInvestorConferences.com on May 5th, 2026.

The Company invites individual and institutional investors, as well as advisors and analysts, to attend online at VirtualInvestorConferences.com

DATE: 5 May 2026

TIME: 12:30pm Eastern Time / 5:30pm British Summer Time

LINK: https://www.virtualinvestorconferences.com/wcc/eh/4814904/lp/5333243/altona-rare-earths-plc-otcqb-anrcf-lse-ree

The Company will also be able for one-on-one meetings:

From 2pm ET to 4pm ET on May 5th
From 12pm ET to 4pm ET on May 6th
From 12pm ET to 6pm ET on May 7th

This will be a live, interactive online event where investors are invited to ask the company questions in real-time. If attendees are not able to join the event live on the day of the conference, an archived webcast will also be made available after the event.

It is recommended that online investors pre-register and run the online system check to expedite participation and receive event updates.

Learn more about the event at www.virtualinvestorconferences.com.

Recent Company Highlights:

Agreement signed with USTDA for a US$1.9 million grant to support the metallurgy and process engineering components of the Monte Muambe rare earths prefeasibility study. The project has a 13.6 million tons at 2.42% Total Rare Earths Oxide and a positive Scoping Study.
Start of cross-trading on OTCQB exchange and active engagement with US rare earths value chain participants.
Completion of a resource drilling campaign for the Monte Muambe fluorspar and gallium project, assay results received, fluorspar and gallium metallurgy on-going, imminent JORC mineral resource estimate for fluorspar and gallium.
Discovery of heavy rare earths enrichment associated to fluorspar at Monte Muambe. Heavy rare earths mineralogy and metallurgy studies have been initiated, and heavy rare earths JORC resource estimate update is in preparation.

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Altona Rare Earths Plc

Cédric Simonet, CEO +44 (0) 7778 866 108 (cs@altonare.com)

Louise Adrian, CFO +44 (0) 7721 492 922 (la@altonare.com)

Strand Hanson (Financial Adviser) +44 (0) 20 7409 3494

Christopher Raggett

Imogen Ellis

Zeus Capital (Corporate Broker) +44 (0) 20 3829 5000

Simon Johnson

James Hornigold

About Altona Rare Earths Plc

The multi-commodity Monte Muambe Project in northwest Mozambique is a highly prospective tenement hosting rare earths, fluorspar, and gallium mineralisation. Since acquiring the project in June 2021, Altona has drilled over 7,800 metres, delivering a maiden JORC Mineral Resource Estimate of 13.6Mt at 2.42% TREO, secured a 25-year mining licence (granted December 2024), and published a Competent Person Report and scoping study for the rare earths component of the project (October 2023). The Company has received a US$ 1.875 million grant from USTDA to advance the rare earths project through the prefeasibility stage.

In parallel, Altona is progressing plans to fast-track the development of high-grade fluorspar veins identified along the western and southern margins of Monte Muambe, with a targeted production of 50,000 tonnes per annum of acid-grade fluorspar over a minimum 12-year mine life. Acid-grade fluorspar is a key input in a wide range of applications, including hydrofluoric acid, lithium battery electrolyte production, and nuclear fuel refining, placing Altona in a strong position to supply this critical material.

About Virtual Investor Conferences®

Virtual Investor Conferences (VIC) is the leading proprietary investor conference series that provides an interactive forum for publicly traded companies to seamlessly present directly to investors.

Providing a real-time investor engagement solution, VIC is specifically designed to offer companies more efficient investor access. Replicating the components of an on-site investor conference, VIC offers companies enhanced capabilities to connect with investors, schedule targeted one-on-one meetings and enhance their presentations with dynamic video content. Accelerating the next level of investor engagement, Virtual Investor Conferences delivers leading investor communications to a global network of retail and institutional investors.

Greg Young

VP Corporate Services, Investor Access

OTC Markets Group

Cleaned text: letterheads, contacts and legal notices removed. View the original announcement ↗ · Company filings. Not investment advice.