Announcement PDF RNS Number : 3164S Aterian PLC 28 August 2026 28 August 2026 Aterian Plc ("Aterian" or the "Company") Total Voting Rights & Admission to Trading Total Voting Rights In accordance with the FCA's Disclosure Guidance and Transparency Rules, as at 28 August 2026, the Company's issued share capital consists of 19,700,000 Ordinary Shares of £0.10, each with one voting right. The Company does not hold any Ordinary Shares in treasury. Therefore, the total number of voting rights in the Company is 19,700,000. The above figure of 19,700,000 should be used by shareholders in the Company as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the share capital of the Company under the Financial Conduct Authority's Disclosure Guidance and Transparency Rules. Admission to Trading In accordance with the Financial Conduct Authority's Prospectus Rules, Aterian announces that 200,000 new Ordinary Shares in the Company were admitted to trading on the Main Market of the London Stock Exchange on 19 August 2026. 1) Name and LEI Aterian PLC 2138005GAARIE1JMP262 2) Regulated Market London Stock Exchange - Main Market 3) Name, type and ISIN Ordinary Shares of £0.10 each ISIN: GB00BPJMN573 4) Number of further securities issued and admitted 200,000 5) Total number of securities in issue following admission 19,700,000 6) Fungibility Fully fungible with existing Ordinary Shares 7) Date of Admission 19 August 2026 8) Prospectus Information N/A - ENDS - For further information, please visit the Company's website: www.aterianplc.com or contact: Aterian Plc: Charles Bray, Executive Chairman - charles.bray@aterianplc.com Simon Rollason, Director - simon.rollason@aterianplc.com Financial Adviser and Joint Broker: AlbR Capital Limited David Coffman / Dan Harris Colin Rowbury Tel: +44 (0)207 7469 0930 Joint Broker: SP Angel Corporate Finance LLP Ewan Leggat / Devik Mehta Tel: +44 20 3470 0470 Financial PR: Bald Voodoo - ben@baldvoodoo.com Ben Kilbey Tel: +44 (0)7811 209 344 Notes to Editors: About Aterian plc www.aterianplc.com Aterian plc is an LSE-listed exploration and development company with a diversified African portfolio of critical metals projects. Aterian plc is actively seeking to acquire and develop new critical metal resources to strengthen its existing asset base while supporting ethical and sustainable supply chains as the world transitions to a sustainable, renewable future. The supply of these metals is vital for developing the renewable energy, automotive, and electronic manufacturing sectors, which are increasingly important in reducing carbon emissions and meeting global climate ambitions. Aterian has a portfolio of multiple copper-silver (+gold) and base-metal projects in Morocco. Aterian holds a 90% interest in Atlantis Metals, a private Botswana-registered company holding eleven mineral prospecting licences for copper-silver in the world-renowned Kalahari Copperbelt and three for lithium and salt brine exploration in the Makgadikgadi Pans region. The Company also holds an exploration licence in southern Rwanda, where it is evaluating the tantalum and niobium opportunity, in addition to further exploring for pegmatite-hosted lithium. The Company's strategy is to seek new exploration and production opportunities across the African continent and to develop new sources of critical mineral assets for exploration, development, and trading. This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com. RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy. END MSCSEMFMMEMSEDA