1 October 2025

CleanTech Lithium PLC

("CleanTech Lithium" or the "Company")

Shareholder Meet and Greet in London

CleanTech Lithium PLC (AIM: CTL), an exploration and development company advancing sustainable lithium projects in Chile, is pleased to announce that the Company's CEO Ignacio Mehech will be in London for LME Week and will take the opportunity to meet with investors and stakeholders on Wednesday 15^th October between 5pm and 8pm.

Investors can register to attend via the following link: Cleantech Lithium Plc - Shareholder Update - Meet and Greet Tickets, Wed, Oct 15, 2025 at 5:00 PM | Eventbrite

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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 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**