Greenheart Gold Reports Phase 2 Drill Results at Majorodam and Announces 10,000-Metre Follow-Up Programme

• Hole D-014 at Heuvel West returned 15.3 metres grading 3.72 g/t Au, including 8.0 metres at 6.57 g/t Au; hole D-013-W1 intersected 6.0 metres at 3.04 g/t Au.
• Heuvel West has been confirmed over approximately 800 metres of strike length and remains open for expansion to the north and south.
• A new target named Gowtu has been identified in the northwest of the project area, defined by an 800-metre by 1,500-metre gold-in-soil anomaly located 3 kilometres west of the Saramacca mine.
• The combined gold-in-soil anomaly at Majorodam now extends over 15 kilometres along the granite/greenstone contact, from Heuvel West in the south to the northern end of the Gowtu target.
• A 10,000-metre reverse circulation drill programme is planned to expand and infill Heuvel West, step out at Heuvel East, and conduct an initial drill test at Gowtu, which has not been drill tested to the company's knowledge.

Greenheart Gold Inc. (TSXV: GHRT; OTCQX: GHRTF) is a gold exploration company operating within the Guiana Shield, a geological terrain in South America that hosts numerous gold deposits and is described by the company as relatively under-explored. The company is led by former executives and members of the exploration team from Reunion Gold, which was noted for the discovery and delineation of the multi-million-ounce Oko West deposit in Guyana. Greenheart Gold is applying that experience to a portfolio of early-stage exploration projects in Guyana and Suriname, with a focus on orogenic gold deposits, a style of mineralisation where gold is concentrated along ancient fault and fold systems in greenstone belts.

Phase 2 Drilling at Heuvel West

The Phase 2 diamond drill programme at Majorodam comprised 10 holes totalling 1,055 metres and was completed in mid-December 2025. It followed an 11-hole, 2,311-metre Phase 1 diamond drill programme completed in September 2025 and an initial 2,138-metre, 20-hole reverse circulation programme completed in March 2025. The Phase 2 programme was designed to test the structural controls on mineralisation identified in prior campaigns.

Five significant intercepts were returned from eight holes drilled at Heuvel West. The strongest result was hole D-014, which intersected 15.3 metres grading 3.72 grams per tonne of gold (g/t Au), including 8.0 metres at 6.57 g/t Au. Hole D-013-W1 intersected 6.0 metres at 3.04 g/t Au, including 5.0 metres at 3.46 g/t Au, and hole D-011 intersected 11.5 metres at 1.34 g/t Au, including 5.0 metres at 2.77 g/t Au. All intervals are reported as downhole lengths and may not represent true widths of mineralisation.

Heuvel West has now been intersected across three main areas, confirming a zone of drill intercepts over approximately 800 metres of strike length. The target remains open for infill drilling and for expansion to both the north and south. Mineralisation at Heuvel West is hosted within interbedded volcanics and sediments along a north-south trending high-strain corridor with coincident fold axes.

Gowtu Target and Expanding Soil Anomaly

The Gowtu target, located in the northwest corner of the Majorodam project, has been defined by a gold-in-soil anomaly measuring approximately 800 metres by 1,500 metres. It is associated with a northwest-southeast trending granite/greenstone contact and sits 3 kilometres west of the Saramacca mine, operated by Zijin Mining Group. Exploration at Gowtu to date has included two phases of soil sampling, detailed geological mapping, LiDAR surveying, airborne magnetic and radiometric surveys, and trenching, with trench results still pending.

The gold-in-soil anomaly associated with the Gowtu target appears to be contiguous with the anomaly present at Heuvel West. Together, the combined anomaly now extends over 15 kilometres along the granite/greenstone contact, from south of Heuvel West to the northern end of the Gowtu target. Gowtu has not been drill tested to the company's knowledge.

Heuvel East, located approximately 500 metres east of Heuvel West, has been confirmed by three drillholes across the three programmes, including hole D-019 from Phase 2, which intersected 7.8 metres at 1.56 g/t Au. Previously reported intercepts at Heuvel East include hole D-006 at 13.0 metres grading 1.29 g/t Au and hole R-015 at 40.0 metres grading 1.49 g/t Au. The target is considered open to the north and south, where a detrital ferricrete cover, a hardened surface layer formed from iron-cemented ancient sediments, may be masking gold signals in soil sampling.

Planned Drill Programme

Greenheart Gold intends to initiate a reverse circulation (RC) drill programme totalling approximately 10,000 metres across the Heuvel West, Heuvel East, and Gowtu targets. RC drilling involves rotating a drill bit into rock and collecting chip samples back to surface through the drill rod, making it faster to execute than diamond drilling over large areas.

At Heuvel West, the programme will target infill drilling between existing intercepts as well as step-out holes to the north and south. At Heuvel East, drilling will step out in areas where ferricrete cover has limited the effectiveness of soil sampling. At Gowtu, the scout programme is designed to test the bedrock source of the soil anomaly and to assess the continuity of the broader 15-kilometre corridor where surface trenching has proved ineffective due to potential colluvium cover.

Justin van der Toorn, President and CEO of Greenheart Gold, serves as the Qualified Person under Canadian National Instrument 43-101 and has reviewed and approved all scientific and technical information in the company's February 17, 2026 press release.

Outlook

Near-term catalysts for the Majorodam project include the release of pending trench results at Gowtu, the commencement of the 10,000-metre RC drill programme, and subsequent assay results from infill and step-out holes at Heuvel West and Heuvel East. First-pass drill results at Gowtu will represent the initial test of a target that has, to date, been characterised only through surface methods. Results from the programme are expected to inform the scale and direction of further exploration across the project.

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