Highlights

  • Drill result of 176m gold-copper intersection at Bramaderos outside the current 3.6Moz AuEq resource
  • $10 million placement completed in June 2026 with DGR Global acquiring a 10% strategic stake
  • Porotillo porphyry system growing as a major resource expansion target at Bramaderos
  • 30-for-1 share consolidation completed March 2026; El Palmar drilling to recommence September 2026

Sunstone Metals Limited (ASX:STM), trading at A$0.205 as at 30 October 2026, is delivering some of its most significant drilling results since the Company completed a strategic reset in early 2026, with a landmark 176-metre gold-copper intersection at the Bramaderos Project in southern Ecuador confirming that the mineralised system extends well beyond the boundaries of the existing 3.6 million gold-equivalent ounce resource.

176 Metre Gold-Copper Intersection at Bramaderos

On 18 August 2026, Sunstone announced its strongest single drilling result from the Bramaderos Gold-Copper Porphyry Project to date, intersecting 176 metres of gold-copper mineralisation outside the current resource boundary. The intersection was located in the Porotillo area of the Bramaderos project, which has been identified through geological mapping and rock chip sampling as a major new porphyry gold-copper system sitting adjacent to the existing resource. This result followed an earlier announcement on 3 August 2026 confirming large gold-copper mineralisation in the Porotillo zone outside the existing resource. The results strongly suggest that the Bramaderos project hosts a considerably larger mineralised footprint than defined by the current 3.6 million gold-equivalent ounce resource.

Porotillo – A Major Resource Expansion Target

The Porotillo area at Bramaderos has emerged as one of the most significant exploration targets at the project following a systematic mapping and sampling campaign initiated in late 2025. Geological mapping identified extensive high-grade porphyry mineralisation at surface at Porotillo, including rock chip samples returning multiple grams per tonne gold and elevated copper across a large footprint. Five trenches were excavated across the Porotillo Exploration Target ahead of the planned drilling campaign. The subsequent drilling intersection of 176 metres of gold-copper mineralisation confirms the geological hypothesis that Porotillo represents a distinct but connected porphyry system with genuine resource expansion potential for Bramaderos. Sunstone deployed a second drill rig at Porotillo to accelerate systematic testing of the porphyry system.

$10 Million Placement and DGR Global Strategic Investment

To fund the accelerated drilling program and growing exploration campaign at both Bramaderos and El Palmar, Sunstone completed a $10 million share placement to institutional and sophisticated investors on 29 June 2026. A notable feature of the placement was the participation of DGR Global Limited, an ASX-listed mineral exploration holding company, which acquired a 10% strategic stake in Sunstone through the placement. DGR Global's investment provides a strategic endorsement of the quality of the Ecuador portfolio and brings a well-credentialled Australian resources investor onto the Sunstone share register. The placement lifted the Company's pro-forma cash balance to approximately $13 million.

Strategic Reset and El Palmar Restart

Sunstone completed a 30-for-1 share consolidation in March 2026, reducing the number of shares on issue to a more manageable count, consistent with the Company's recapitalisation and strategic reset. Alongside Bramaderos, Sunstone holds an 87.5% interest in the El Palmar Gold-Copper Project in Ecuador, targeting deep gold-copper porphyry systems. Drilling at El Palmar was expected to recommence in September 2026. Together, Bramaderos and El Palmar represent a portfolio of two potentially large-scale copper-gold porphyry systems in one of South America's underexplored mineral provinces.