Fundraising and Notice of General Meeting

THE INFORMATION CONTAINED WITHIN THIS ANNOUNCEMENT IS DEEMED BY THE COMPANY TO CONSTITUTE INSIDE INFORMATION AS STIPULATED UNDER THE MARKET ABUSE REGULATION (EU) NO. 596/2014 AS IT FORMS PART OF UK DOMESTIC LAW PURSUANT TO THE MARKET ABUSE (AMENDMENT) (EU EXIT) REGULATIONS (SI 2019/310). . UPON THE PUBLICATION OF THIS ANNOUNCEMENT VIA A REGULATORY INFORMATION SERVICE, THIS INFORMATION IS CONSIDERED TO BE IN THE PUBLIC DOMAIN.

First Tin PLC

("First Tin" or "the Company")

Fundraising and Notice of General Meeting

First Tin PLC (LSE: 1SN), a tin development company with advanced, low capex projects in Germany and Australia, is pleased to announce a conditional equity fundraising of £6.3 million (before expenses) by way of a subscription (the "Subscription") for 90,000,000 new ordinary shares (the "Subscription Shares") of £0.001 each in the capital of the Company at a price of 7 pence per ordinary share.

Arlington Group Asset Management acted as broker in connection with the Subscription.

The proceeds from the Subscription will be allocated across both assets as well as to fund the typical costs associated with being a listed company:

Taronga, Australia:

The majority of the funding will be allocated to the Taronga project including for:

• Finalisation of the updated and value enhanced DFS, incorporating:

o The results of the recently completed infill and extension drilling programme to provide a revised Resource Estimate, which is expected to lead to an extension to the life of mine

o The results of the ongoing Mineral Processing Testwork.

o Commencement of FEED for critical equipment.

• Early preparatory work on dam construction and groundworks for the southern water system, improvements to the Grampians Road, the main access road to the mine site, and borefield establishment.
• Detailed design preparation for the Mine Camp and the mine water system.
• Studies related to the biodiversity offset area.

Tellerhäuser, Germany:

• With the majority of funds being allocated in Australia, funds allocated in Germany will be used to support internal activities related to progressing permitting, as well as for fieldwork related to the exploration licenses at Gottesberg and Auersberg.

First Tin CEO, Bill Scotting, commented:

"This successful fundraising marks another important milestone for First Tin as we continue to advance our strategy of developing high-quality, low-capex tin projects in stable jurisdictions. The proceeds will allow us to accelerate critical early works at Taronga, including preparatory groundworks, infrastructure upgrades, and the completion of our updated Definitive Feasibility Study, while also supporting progress at our German assets.

"With tin's essential role in the global energy transition and digital technologies, and ongoing supply constraints in the market, First Tin is well positioned to deliver sustainable value for all stakeholders. Our recent achievements at Taronga-including the conclusion of the public exhibition period of the Environmental Impact Statement, positive drilling results, and the expansion of our exploration footprint, together with receipt of a LI from Exim Bank in the USA-demonstrate the significant potential of our portfolio. We remain focused on transforming our advanced projects into operating mines, underpinned by best-in-class environmental standards and strong local partnerships."

Notice of General Meeting

The Subscription is conditional on the approval by shareholders of resolutions to be proposed at a general meeting of the Company which is to be convened on 11 December 2025 and to be held at 47-48 Piccadilly, London W1J 0DT at 9.00am GMT (the "General Meeting"), to approve the issue of the Subscription Shares on a non pre-emptive basis (the "Resolutions").

Subject to all Resolutions being passed at the General Meeting, it is expected that admission will become effective and dealings in the Subscription Shares will commence on the Main Market at 8 a.m. on 15 December 2025.

Applications will be made to for the Subscription Shares to be admitted to the Equity Shares (Transition) category of the Financial Conduct Authority's Official List and to trading on the Main Market of the London Stock Exchange, assuming the conditions to the Subscription are satisfied.

A copy of the full Notice of Meeting is available on the Company's website at: https://firsttin.com/investors/. Shareholders can register their vote(s) for the General Meeting by visiting www.shareregistrars.uk.com, clicking on the "Proxy Vote" button and then following the onscreen instructions (you can locate your log-in details, i.e. user name and access code, on the top of your Proxy Form).