17 August 2026

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

CEO to attend Chile Day in London and further investor engagements

CleanTech Lithium PLC (AIM: CTL, Frankfurt:T2N) an exploration and development company, advancing sustainable lithium projects in Chile, is pleased to announce a series of investor engagements in London and Jersey this September, offering shareholders and prospective investors direct access to CEO Ignacio Mehech.

Ignacio will be attending Chile Day in London. This event, organised by the Chilean government and the British Embassy, brings together several senior governmental and industry representatives and will be held on Wednesday 16^th September. Part of the agenda will see the Minister of Finance and the Minister of Economy and Mining set out the investment case for Chile. Registration is free and open to all however there is a capacity limit. Registration link: https://chileday.cl/register/

Additional events where investors can meet Ignacio in person:

·    Friday 11^th September - Jersey

·    Thursday 17^th September - London

These sessions offer investors a valuable opportunity to hear directly from the CEO on the Company's progress at its Laguna Verde project, upcoming milestones such as the proposed ASX listing, and to put their questions to him in person. Investors wishing to attend either event are invited to register their interest by emailing [email protected].

For those unable to attend in person, the Company will host a live investor webinar on Friday 11^th September at 11:00am (BST), free to join via the Investor Meet Company platform:

https://www.investormeetcompany.com/cleantech-lithium-plc/register-investor

Investors who already follow CleanTech Lithium PLC on the Investor Meet Company platform will automatically be invited via email and the platform.

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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 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**