Results of Broker Option

26 August 2025 - CleanTech Lithium PLC (AIM: CTL), an exploration and development company advancing sustainable lithium projects in Chile, is pleased to announce that, further to the announcement on 11 August 2025, the broker option granted to Fox-Davies Capital Limited to deal with any additional demand from existing institutional shareholders who did not have the opportunity to participate in the Placing (the "Broker Option") has been exercised in respect of 8,000,000 new ordinary shares at the Issue Price (the "Broker Option Shares"). The Broker Option was for £250,000 with a possibility of being increased at Fox-Davies and the Company's discretion. Given the additional demand it was upsized to £400,000 and remains conditional on shareholder approval at the general meeting of the Company to be held at 10:00 a.m. on 29 August 2025 (the "General Meeting").

The Broker Option has conditionally raised gross proceeds of £400,000 which will be in addition to the £4.3 million raised pursuant to the Placing. As announced 11 August 2025, the Company also intends to conduct a retail offer to existing shareholders, details of which will be announced shortly.

The Broker Option Shares carry a warrant entitlement of one warrant for every Broker Option Share. Each warrant grants the holder the right to subscribe for one new ordinary share at a price of 6 pence, being at a 20% per cent premium to the Issue Price. The Broker Option is subject to shareholder approval at the General Meeting.

Capitalised terms used but not defined in this announcement shall have the meaning given to them in the Company's announcement of the Fundraising on 11 August 2025.

Steve Kesler, Non-Executive Chairman of CleanTech Lithium, said:

"Following the recent successful fundraising, the Broker Option allowed additional participation on the same terms, enabling existing institutional investors to further demonstrate their support and confidence in CleanTech Lithium. Thank you to the investors who participated. This result strengthens our capital base as we advance the Laguna Verde project, following the acquisition of the Minergy licences which has positioned us more favourably for the CEOL application.

Over the coming months, our focus is on completing the PFS for Laguna Verde, progressing our CEOL application which in turn will help initiate strategic investor conversations."

Upcoming General Meeting

The Broker Option is subject to shareholder approval at the General Meeting, further details of which are set out in a shareholder circular published by the Company on 13 August 2025, which is available on the Company's website https://ctlithium.com/investors/circulars-documents/.

Admission and Trading

Subject to approval being given at the General Meeting, application has been made to London Stock Exchange for the Broker Option Shares (together with the Conditional Placing Shares) to be admitted to trading on AIM ("Second Admission"). It is currently expected that Second Admission will become effective, and trading of the Broker Option Shares (together with the Conditional Placing Shares) will commence on AIM, at 8.00 a.m. on 1 September 2025.

The Broker Option Shares (as well as the Conditional Placing Shares) will, when issued, be credited as fully paid and will rank pari passu in all respects with the existing ordinary shares of the Company, including the right to receive all dividends or other distributions made, paid or declared in respect of such shares after the date of issue of the Broker Option Shares (as well as the Conditional Placing Shares).

Fox-Davies Capital Limited is authorised and regulated by the FCA in the United Kingdom and is acting as Bookrunner for the Company and no one else in connection with the Placing and the Broker Option and will not be responsible to anyone (including any Places) other than the Company for providing the protections afforded to its clients or for providing advice in relation to the Placing or the Broker Option or any other matters referred to in this announcement.