17 March 2026

CleanTech Lithium PLC

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

Issue of Equity to Settle Deferred Fees, Total Voting Rights and Block Listing Application

CleanTech Lithium PLC (AIM: CTL, Frankfurt:T2N), an exploration and development company advancing sustainable lithium projects in Chile, announces that an application (the "Application") has been made to the London Stock Exchange ("LSE") to issue equity to former directors to settle historically deferred fees. This is alongside a block listing application to allow 11p warrants, previously approved by shareholders, to be issued when notices to exercise are received and processed.

Issue of Equity to Settle Deferred Fees

The Application has been made for the issue and allotment of a total of 1,252,726 new ordinary shares of £0.02 each (the "New Ordinary Shares") to former directors who stepped down from CTL's Board on 11 August 2025:

-      Maha Daoudi - 400,030 New Ordinary Shares;

-      Tommy McKeith - 400,030 New Ordinary Shares, and

-      Jonathan Morley-Kirk - 452,666 New Ordinary Shares.

At the time of their departure, the former directors were owed a total of £145,775 in deferred salaries accrued between August 2024 and the date of their resignation. Although entitled to have these fees settled in cash, the former directors have agreed to receive the New Ordinary Shares at a price of £0.116366 per share. The issue price was calculated by the Company based on the average of the monthly VWAPs for the periods when the fees were deferred. The Board notes that settling these historical liabilities in equity rather than cash supports the Company's ongoing capital preservation objectives, while the former directors' election to receive shares at this price point reflects their continued alignment with the Company's future potential.

The admission of the New Ordinary Shares is expected to occur on or around 23 March 2026 (the "Admission"). The New Ordinary Shares, when issued, will rank pari passu with the existing ordinary shares in the Company.

Total Voting Rights

Following Admission, the Company's issued share capital will consist of 204,189,492 Ordinary Shares, each with voting rights. This figure may be used by shareholders in the Company as the denominator for the 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 Financial Conduct Authority's Disclosure Guidance and Transparency Rules.

Block Listing Application for Warrants

The Company also announces that it has made an application to the London Stock Exchange for a block listing of 15,899,873 ordinary shares in the capital of the Company (the "New Block Listing Shares") and it is expected the block listing will become effective on or around 23 March 2026. This block listing is being put in place to allow eligible shareholders to exercise the warrants which were issued in connection with a placing announced on 11 February 2025 and subsequently approved by shareholders and announced on 24 March 2025. Eligible shareholders can exercise the warrants under the terms they were originally issued, namely at an exercise price of 11p per ordinary share, with an expiry date of 14 February 2029. The New Block Listing Shares, when issued, will rank pari passu with all existing ordinary shares.  To facilitate this, a validly submitted Notice to Exercise will need to be made. A template of the Notice to Exercise can be requested from the Company's registrar, Computershare, via email at [email protected].

The Company will report on shares issued under the block listing every six months as set out under the AIM Rules.

For the avoidance of doubt, the total voting rights stated above does not include any of the New Block Listing Shares that might be issued under the block listing.

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 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**