Mr. Rob Birmingham reports

GOLDHAVEN RESOURCES PROVIDES AUGER DRILL PROGRAM UPDATE AT COPECAL GOLD PROJECT IN MATO GROSSO, BRAZIL

Goldhaven Resources Corp. has provided an update on its systematic auger drill program over the east and west anomalies initiated on June 9, 2025. The company's geological team has drilled past the halfway mark, and the first round of assays have been shipped to ALS Global Laboratory, with sample preparation being completed in Cuiaba and sample analysis being finalized in Belo Horizonte.

Goldhaven has reached 70 per cent of the planned program, completing 1,400 metres, and has intersected regolith, weathering profile consistent with expectations at zero- to 20-metre depth. Additionally, several holes show weathering down to 30 metres in vertical depth, which may indicate preferential weathering along the major structures being targeted for potential mineralization.

Goldhaven has submitted a total of 350 samples from the east target of its Copecal project to ALS Global Laboratories for analysis. To ensure rigorous quality assurance/quality control protocols, sampling was conducted at consistent two-metre intervals down the drill hole. Quality control samples -- including blanks, certified standards and duplicates -- were inserted at a rate of 10 per cent of the total sample batch. These QA/QC measures adhere to industry best practices and align with the quality assurance standards of ALS Global Laboratories. Assay results are expected within approximately three to four weeks.

Rob Birmingham, chief executive officer of Goldhaven Resources, commented: "We are excited to have surpassed the first half of auger drilling on our Copecal gold project, with our first round of assays shipped for analysis. The initial work has been focused on our east target, while we anticipate shifting to the west target in the coming days, which will give us more clarity on the anomalies prior to the initiation of diamond drilling."

Auger drilling and electromagnetic very-low-frequency survey overview

The auger drilling program is focused primarily on defining a 3-D lithogeochemical footprint of gold distribution within the regolith profile beneath the extensive east gold-in-soil anomaly. Vertical auger holes are being drilled systematically from surface to the regolith bedrock interface. The expected range is five to 30 metres in depth on a tight 100-metre-by-50-metre grid. This methodical approach is expected to generate high-resolution data critical for the refinement of subsurface geological and structural models.

Looking ahead, Goldhaven anticipates launching a drone-borne very-low-frequency electromagnetic survey in July. This survey will target the structural trends believed to be favourable hosts to gold mineralization, covering both the east and west gold-in-soil anomalies, as well as their potential strike extensions. The integration of VLF geophysics with auger geochemistry will provide a robust framework for finalizing diamond drill collar locations, thereby maximizing the efficiency and effectiveness of future drilling campaigns.

About Goldhaven Resources Corp.

Goldhaven is a Canadian junior exploration company focused on acquiring and exploring highly prospective land packages in North and South America. The company's projects include: (i) the flagship Magno project, a district-scale polymetallic property adjacent to the historic Cassiar mining district in British Columbia; (ii) the Three Guardsman project, which exhibits significant potential for copper and gold skarn mineralization; (iii) the Copecal gold project, a drill-ready gold project located in Mato Grosso, Brazil, with a six-kilometre strike of anomalous gold-in-soil samples; and (iv) three critical mineral projects with extensive tenement packages totalling 123,900 hectares: Bahia South, Bahia North and Iguatu projects located in Brazil.

Qualified person

The scientific and technical information disclosed in this document has been reviewed and approved by Jonathan Victor Hill, BSc honours, FAusIMM, a qualified person consistent with National Instrument 43-101, country manager of Goldhaven.

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