Announcement PDF RNS Number : 6604N Aterian PLC 19 June 2025 Aterian plc ("Aterian" or the "Company") 2025 Annual General Meeting Results Aterian Plc (LSE: ATN),the critical metal-focused exploration and development company,is pleased to announce that at the Company's Annual General Meeting held earlier today, all resolutions were duly passed. The results of the poll were as follows: Resolution For Against Withheld Total 01 02 03 04 05 06 5,267,447 5,267,447 5,267,447 5,267,447 5,216,197 5,216,197 Nil Nil Nil Nil 51,250 51,250 Nil Nil Nil Nil Nil Nil 5,267,447 5,267,447 5,267,447 5,267,447 5,267,447 5,267,447 In accordance with UK Listing Rule 9.6.2R copies of all the resolutions passed other than resolutions concerning ordinary business have been submitted to the Financial Conduct Authority via the National Storage Mechanism and will shortly be available for inspection at: https://data.fca.org.uk/#/nsm/nationalstoragemechanism. A copy of the poll results for the Annual General Meeting will also be available on the Aterian plc website: www.aterianplc.com Engage with the Aterian PLC management team directly by asking questions, watching video summaries, and seeing what other shareholders have to say. Navigate to our interactive investor hub here:https://aterianplc.com/s/fcf8eb - ENDS For further information, please visit the Company's website:www.aterianplc.comor contact: Aterian Plc: Charles Bray, Executive Chairman -charles.bray@aterianplc.com Simon Rollason, Director -simon.rollason@aterianplc.com Financial Adviser and Joint Broker: Novum Securities Limited David Coffman / Anastassiya Eley Colin Rowbury Tel: +44 (0)207 399 9400 Joint Broker: SP Angel Corporate Finance LLP Ewan Leggat / Adam Cowl Tel: +44 20 3470 0470 Financial PR: Bold 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. The Company has entered into a joint venture agreement with Rio Tinto Mining and Exploration Limited. Rio Tinto will earn into the HCK project in southern Rwanda, exploring and developing a lithium-tantalum-niobiumtin mining operation. The Company also holds an exploration licence in Rwanda. 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 seven mineral prospecting licences for copper-silver in the world-renowned Kalahari Copperbelt and three for lithium brine exploration in the Makgadikgadi Pans region. 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 RAGBLGDLLUBDGUC