GreenRoc Strategic Materials Plc / EPIC: GROC / Market: AIM / Sector: Mining

8 April 2026

GreenRoc Strategic Materials Plc

("GreenRoc" or the "Company")

Drill contract for Amitsoq signed

GreenRoc Strategic Materials Plc (AIM: GROC), a company focused on the development of critical mineral projects in Greenland, is pleased to announce that it has signed a drilling contract for the planned Phase III drilling programme at Amitsoq and has appointed SLR Consulting Ltd ("SLR") to undertake geotechnical and hydrogeological surveys.

Highlights

·      Drill contract signed with drill contractors Mineral Exploration Drilling Ltd ("MEDL"), who have significant Greenland drilling experience.

·      Phase III drilling designed to extend Indicated and Measured Resource categories and provide important data for planned Pre-Feasibility Study.

·      Geotechnical and hydrogeological work to be undertaken by SLR, who have been closely involved in all previous feasibility studies commissioned by the Company in relation to both the Amitsoq mine and active anode materials ("AAM") plant.

·      Drilling planned for up to 12 holes ranging ca 130m to 285m for up to ca 2,200m of drilling.

Phase III drilling programme

The Phase III drilling at Amitsoq is designed both to test the northern extension of the Amitsoq graphite ore bodies and to acquire important geotechnical and hydrogeological technical information for the upcoming Pre-Feasibility Study ("PFS"). The present Mineral Resource Estimate at Amitsoq was declared in early 2023 (see the Company's RNS of 23 January 2023) based on the Phase I and II drilling programmes completed in 2021 and 2022, respectively. The combined Measured and Indicated Mineral Resource contains a total of 7.38Mt at 21.21% graphite with an additional inferred resource of 15.67Mt at 20.04% graphite. The planned drilling aims to test a substantial part of the inferred mineral resource area to the north of the Indicated and Measured areas with the aim of lifting the category to Indicated.

The Phase III drilling programme is planned to comprise up to 12 holes, ranging from ca. 130m to 285m depth using four drill pads (Figure 1). The holes will be drilled using NQ3 (triple-tube) system which produce a slightly smaller core diameter than standard NQ2 (45.0mm versus 47.6mm, respectively), but much improved core recovery if fractured ground is encountered.

Figure 1, Amitsoq graphite deposit looking west-northwest, showing the planned four drill pads 2026-1 to 2026-4 and the planned up to 12 drill holes in light blue and the Phase I and II drill pads in dark blue. Also shown are the traces of the Lower Graphite Layer orebody (red) and Upper Graphite Layer orebody (yellow) as well as the trace of the underground historical mine workings (light yellow).

Geotechnical and hydrogeological studies

The objective of a PFS-level geotechnical study is to provide a set of stope design parameters to confirm the orebody is technically and economically viable to mine using the selected mining method and to enable the conversion of mineral resources to mineral reserves. A hydrogeological PFS study aims to provide robust hydrogeological inputs to all aspects of the mining process, ranging from the influence of water pressure on geotechnical safety to mine water management of inflows. All of the data will feed directly into the PFS, which is planned to start in late 2026. An agreement has been signed with SLR for it to conduct hydrogeological and geotechnical surveying as well as onsite training for GreenRoc crew in data acquisition procedures.

The drilling programme is planned to mobilise in mid-June 2026 with completion in August 2026 and will be overseen by the GreenRoc geological team.

GreenRoc's CEO, Stefan Bernstein, commented:

"I am pleased to announce the signing of agreements with drilling contractor MEDL and engineering company SLR to carry out a Phase III drilling programme at Amitsoq. The forthcoming programme marks a significant step forward in advancing Amitsoq to development, as it is not only designed to expand and upgrade our existing mineral resources but also to gather critical geotechnical and hydrogeological data for our upcoming Pre-Feasibility Study."

*ENDS** 

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This announcement contains inside information for the purposes of the UK Market Abuse Regulation and the Directors of the Company are responsible for the release of this announcement.

Forward Looking Statements

This announcement contains forward-looking statements relating to expected or anticipated future events and anticipated results that are forward-looking in nature and, as a result, are subject to certain risks and uncertainties, such as general economic, market, financial and business conditions, competition for and availability of qualified staff and contractors, regulatory processes and actions, technical issues, new legislation, uncertainties resulting from potential delays or changes in plans, uncertainties resulting from working in a new political jurisdiction, uncertainties regarding the results of exploration, uncertainties regarding the timing and granting of prospecting rights, uncertainties regarding the timing and granting of regulatory and other third party consents and approvals, uncertainties regarding the Company's or any third party's ability to finance, execute and implement future plans and programmes, and the occurrence of unexpected events. Actual results achieved may vary from the information provided herein as a result of numerous known and unknown risks and uncertainties and other factors.

About GreenRoc

GreenRoc Strategic Materials Plc is an AIM-quoted UK public company focused on developing the Amitsoq Graphite Project in Greenland into a producing mine to meet critical demand from Electric Vehicle manufacturers in Europe and North America for new, high grade and conflict-free sources of graphite. 

Amitsoq is one of the highest-grade graphite deposits in the world with a combined Measured, Indicated and Inferred JORC Resource of 23.05 million tonnes (Mt) at an average grade of 20.41% graphite, sufficient to sustain several decades of mining.

The plans for the Amitsoq Project include the construction of a facility to further process mined graphite into active anode material ("AAM") - an indispensable component of Li-batteries - which plans have been independently and positively evaluated to the prefeasibility stage. GreenRoc has entered into a memorandum of understanding with the Norwegian battery manufacturer Morrow Batteries to establish a regional AAM supply chain.

GreenRoc received an Exploitation Licence for the Amitsoq Project from the Government of Greenland in December 2025, valid for 30 years, and the Project has been designated a Strategic Project by the EU.

In October 2025, GreenRoc secured a loan facility of EUR 5.2 million from the Export and Investment Fund of Denmark ("EIFO") for the financing of the Company's work programme, including the construction of a pilot AAM plant in Denmark which is in progress and expected to be completed during 2026. For the final coating process, crucial to anode material performance, GreenRoc signed a MoU with a leading producer and supplier of active anode material to major global automotive OEMs and battery cell manufacturers for a Technology Licence Agreement, under which GreenRoc can coat and test Amitsoq spheronised purified graphite products and ultimately produce coated SPG at Greenroc's planned full-scale production plant.

In December 2025, GreenRoc and its consortium partners DTU and IPU were granted up to ca. £1.2m of grant funding for the project entitled "EU-Graphite: Building European production of graphite active anode material" ("EU-Graphite") from the Energy Technology Development and Demonstration Programme ("EUDP"), a Danish government funding programme, which funds will be utilised to develop GreenRoc's plans to achieve a more sustainable and environmentally friendly alkaline-based purification process for its anode material.

Both GreenRoc and the Amitsoq Project have been ESG-certified by Digbee™, an independent platform which provides sustainability assessments for the mining industry.