Issue of Equity & Partial Redemption of Loan Notes

3 November 2025

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

Issue of Equity and Partial Redemption of Convertible Loan Notes

CleanTech Lithium PLC (AIM: CTL, Frankfurt:T2N), an exploration and development company advancing sustainable lithium projects in Chile, announces a small subscription conducted under the same terms as the fundraising first announced on 11 August 2025 and subsequently approved by shareholders at the General Meeting held on 29 August 2025. 

Highlights:

· The Company has raised gross proceeds of approximately £150,000 through the issue of 3,000,000 new Ordinary Shares of £0.02 pence each at 5 pence per share (the "Subscription Shares"), with one warrant attached per share exercisable at 6 pence.

· Of the proceeds, approximately £105,000 has been used to partially redeem the Company's convertible loan notes (the "CLNs"), the restructuring of which was also approved by shareholders on 29 August 2025.

· The subscription was conducted to accommodate certain shareholders who had expressed interest in participating in the August placing but were unable to do so at the time due to administrative constraints.

Background and Rationale:

During August 2025, the Company announced a placing and retail offer (together the "fundraising") which raised in total £4.95 million to fund the acquisition of additional licences at Laguna Verde, progress technical workstreams, and restructure its CLNs. The fundraising shares carried a warrant entitlement on a 1:1 basis, exercisable at 6 pence per share from one year after admission for a period of three years.

Following shareholder approval at the General Meeting on 29 August 2025, the Company received expressions of interest from certain shareholders who had been unable to participate in the original placing due to administrative reasons. In the interest of fairness and inclusivity, the Board approved the subscription on identical terms as the fundraising to accommodate these investors. This subscription was completed once several administrative matters outside of the Company's control were settled.

Use of Proceeds:

The net proceeds have been applied toward:

· Partial redemption of CLNs, reducing future dilution and strengthening the balance sheet.

· General working capital to support the Company's strategic objectives.

Admission and Total Voting Rights:

Application has been made for the 3,000,000 Subscription Shares to be admitted to trading on AIM, with admission expected to occur on or around 04 November 2025. Following admission, the Company's issued share capital will consist of 202,936,766 Ordinary Shares, each with voting rights. This figure may be used by shareholders as the denominator for calculations under the FCA's Disclosure Guidance and Transparency Rules.

The information communicated within this announcement is deemed to constitute inside information as stipulated under the Market Abuse Regulations (EU) No 596/2014 which is part of UK law by virtue of the European Union (Withdrawal) Act 2018. Upon publication of this announcement, this inside information is now considered to be in the public domain. The person who arranged for the release of this announcement on behalf of the Company was Steve Kesler, Director and Chairman.

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**