6 January 2026

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

Appointment of Financial Advisor to Secure Strategic Partner and Project Finance

CleanTech Lithium PLC ("CleanTech Lithium" or "CleanTech" or the "Company") (AIM: CTL, Frankfurt:T2N), an exploration and development company advancing sustainable lithium projects in Chile, is pleased to announce the appointment of Cutfield Freeman & Company Limited ("CF&Co") as its Financial Advisor for the purposes of supporting the Company in securing a strategic partner for the next phase of development at the Laguna Verde project and in structuring the financing pathway towards commercial production.

Funding the Laguna Verde project through its next and subsequent development stages is now of central importance following the Company's recent application for a Special Lithium Operating Contract ("CEOL") and the Pre-Feasibility Study ("PFS") is nearing completion. CF&Co was appointed following a selection process involving a number of firms in Q4 2025, and selected for its sector experience having achieved meaningful results for some of CleanTech Lithium's peers.

Ignacio Mehech, Chief Executive Officer of CleanTech Lithium, commented: "The appointment of CF&Co marks a significant next step in the evolution of CleanTech Lithium. As we progress the CEOL application through the streamlined process and prepare to release the Laguna Verde PFS, the timing is ideal to bring in an experienced advisor to support both our strategic partner process and the broader project financing pathway. CF&Co's track record, particularly in energy-transition minerals, gives us confidence that we can identify and secure the right partner to unlock the full value of the Laguna Verde project."

Founded in 2000, CF&Co deals exclusively with the mining and metals processing industry and has offices in London, Toronto, Hong Kong, and Perth and provide advice across the spectrum of private mining finance. CF&Co has, since inception, advised on over 200 transactions worldwide, covering over US$20 billon, including other lithium development projects. https://www.cfandco.com/en/

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

Cutfield Freeman:  CF&Co is an independent financial adviser, dealing exclusively with the mining and metals processing industry. The Company was founded in 2000, and has 18 professionals across offices in London, Toronto, Hong Kong, and Perth and provide advice across the spectrum of private mining finance - M&A, asset sales, joint ventures, project and trade finance, government relations. CF&Co are independent and not tied to any financial institution or funding source. They state that their role is to help maximise value for their clients.

CF&Co has, since inception, advised on over 200 transactions worldwide, covering over US$20 billon, including other lithium development projects.  They also have considerable experience helping junior mining and metals companies fund their projects and have longstanding experience dealing with mining and metal processing industry financiers and partners.

**ENDS**