Exercise of Warrants and Total Voting Rights

02 November 2026

CleanTech Lithium PLC (“CleanTech Lithium”, “CTL” or the “Company”)

Exercise of Warrants and Total Voting Rights

CleanTech Lithium PLC (AIM: CTL), an exploration and development company advancing sustainable lithium projects in Chile, announces that it has received notice from a warrant holder to exercise warrants over 1,000,000 new ordinary shares of £0.02 each in the capital of the Company (the “Warrant Shares”) at an exercise price of £0.06 per Warrant Share, raising gross proceeds of £60,000. The warrants were issued in connection with the placing announced on 11 August 2025.

Admission and Total Voting Rights

Application has been made to the London Stock Exchange for the 1,000,000 Warrant Shares to be admitted to trading on AIM, with admission expected to occur on or around 03 November 2026. The Warrant Shares, when issued, will rank pari passu with the existing ordinary shares in the Company. Following admission, the Company's issued share capital will consist of 366,191,716 Ordinary Shares, each with voting right. From admission this figure may be used by shareholders as the denominator for calculations by which they will determine if they are required to notify their interest in, or a change to their interest in CleanTech Lithium under the FCA's Disclosure Guidance and Transparency Rules.

Beaumont Cornish Limited ("Beaumont Cornish") is the Company's Nominated Adviser and is authorised and regulated by the FCA. Beaumont Cornish's responsibilities as the Company's Nominated Adviser, including a responsibility to advise and guide the Company on its responsibilities under the AIM Rules for Companies and AIM Rules for Nominated Advisers, are owed solely to the London Stock Exchange. Beaumont Cornish is not acting for and will not be responsible to any other persons for providing protections afforded to customers of Beaumont Cornish nor for advising them in relation to the proposed arrangements described in this announcement or any matter referred to in it. Distribution: This announcement has been notified via a Regulatory Information Service and it is not authorised for distribution into North America or any other jurisdiction where to do so would constitute a violation of the relevant laws or regulations of that jurisdiction.

Notes

CleanTech Lithium (AIM:CTL, Frankfurt:T2N) is an exploration and development company advancing lithium projects in Chile for the clean energy transition. CleanTech Lithium has two key lithium projects in Chile, Laguna Verde and Viento Andino, and exploration stage project in Arenas Blancas (Salar de Atacama), located in the lithium triangle, a leading centre for battery grade lithium production. CleanTech Lithium and the Mining Ministry in Chile have agreed the contractual terms for the Special Lithium Operating Contract (“CEOL”) for Laguna Verde, subject to final ratification.

CleanTech Lithium is committed to utilising Direct Lithium Extraction ("DLE") with reinjection of spent brine. Direct Lithium Extraction is a transformative technology which removes lithium from brine with higher recoveries, short development lead times and no extensive evaporation pond construction. For more information, please visit: www.ctlithium.com

**ENDS**