Rome Resources PLC Regulatory News (RMR)

2 December 2025

Rome Resources plc

("Rome Resources", the "Company" or the "Group")

Mobilisation Update

Start of the next phase of exploration

Rome Resources (AIM: RMR), the DRC-focused tin and copper explorer, is pleased to announce that the mobilisation of equipment and personnel to its Bisie North Project is now underway. This marks the start of the next phase of exploration following the Company's maiden Mineral Resource Estimate ("MRE") released on 30 October 2025.

The MRE confirmed Bisie North as a large, multi-metallic system, with significant tin, copper, zinc and silver mineralisation defined at Kalayi and Mont Agoma. Importantly, drilling to date has only tested a small portion of the licence area and only to shallow depths of approximately 220 - 250 metres. Internal geological modelling by Rome Resources indicates exploration targets across the two deposits of between 102,000 and 260,000 aggregate tonnes of contained tin, highlighting the scale of potential growth as the system is drilled deeper and along strike.

As such, the next phase of exploration is designed to begin testing that deeper potential by targeting:

· Deeper tin zones beneath the main Mont Agoma polymetallic system, where modelling indicates tin grades are likely to strengthen with depth as copper declines, consistent with regional analogues such as Alphamin's Bisie mine;

· The Mont Agoma East tin zone, where a near-surface 23 metres tin intercept was identified post-MRE and will now be drilled out ahead of inclusion in a follow-up resource estimate; and

· High-grade tin shoots at Kalayi, where shallow historic intercepts suggest thicker, higher-grade zones may exist at depth, mirroring patterns seen at the neighbouring Bisie mine.

The BAC contract helicopter returned to the DRC over the weekend and is now preparing for phased mobilisation of the crews and equipment to the project site over the coming days. Drilling will commence first on Mont Agoma, where the three rigs are currently positioned, before moving to Kalayi once the initial sequence of drill holes is completed. 

A further update will be provided as drilling commences, followed by regular updates as results start to flow.

Paul Barrett, Chief Executive Officer of Rome Resources, commented:

"We are very pleased to restart operations so soon after delivering the maiden MRE, which confirmed Bisie North as a significant, multi-metallic system with exceptional growth potential. This new drilling phase is designed to test exactly where the system is expected to become highest grade specifically at depth beneath Mont Agoma, within the newly identified Mont Agoma East zone, and below the known high-grade shoots at Kalayi.

This is a strategically important programme for Rome Resources, focused on the deeper source of the tin. With mobilisation underway, we look forward to advancing drilling rapidly and updating the market as results come through."

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