12 February 2026

CleanTech Lithium PLC ("CTL", "CleanTech Lithium" or the "Company")

Update to CEOL Process and CFO Position

CleanTech Lithium (AIM: CTL, Frankfurt:T2N), an exploration and development company advancing sustainable lithium projects in Chile, updates the market on the Special Lithium Operating Contract ("CEOL") process and the role of Chief Financial Officer ("CFO").

As announced on 5 January 2026, the Company submitted its CEOL application for the Laguna Verde project. The application remains under review by the government of Chile and since its submission, CleanTech Lithium's CEO, Ignacio Mehech, has held several constructive meetings with the Ministry of Mining. The Company remains confident in CTL meeting the criteria set out by the Government for the Laguna Verde CEOL award and will update the market as soon as it has any definite information to announce.

CFO Position

It was announced on 11 August 2025 that CFO and Director Gordon Stein would step down from the Board as a director with immediate effect and leave his position as CFO on 11 February 2026. As the Company is entering a new phase working with the recently appointed project financial advisor, Cutfield Freeman & Co, engaged to identify and secure a strategic partner to fund the next stage of project development, to maintain continuity and momentum the Board is engaging Mr Stein under a consulting agreement initially until end June 2026 to lead these activities and also fulfil the role of non-Board CFO.

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.

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 an exploration stage project in Arenas Blancas (Salar de Atacama), located in the lithium triangle, a leading centre for battery grade lithium production.

CleanTech Lithium is committed to utilising Direct Lithium Extraction ("DLE") with reinjection of spent brine resulting in no aquifer depletion. 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**