Mr. Rob Birmingham reports

GOLDHAVEN RESOURCES COMPLETES AUGER DRILL PROGRAM AT COPEÇAL GOLD PROJECT IN MATO GROSSO, BRAZIL

Goldhaven Resources Corp. has completed its initial auger drill program at the Copecal project, Brazil, which commenced on June 9, 2025. A total of 107 auger holes were successfully drilled, delivering 2,153.4 metres of subsurface coverage and marking a significant milestone in exploration efforts.

The auger drill program included 92 auger holes which systematically covered the main area of the east anomaly on a 100-metre-by-50-metre grid while a further 15 reconnaissance holes targeting geochemical -- structural targets projected toward the southeast from the western anomaly. Holes were drilled from surface to the weathered rock (regolith) -- fresh rock interface or to a maximum depth of 30 m. The average hole depth was 20.13 metres with the hole depth range of two m to 30 m.

A total of 1,325 samples, including QA/QC (quality assurance/quality control) samples, have been shipped to ALS Global Laboratories for analysis. Sample preparation is being undertaken at ALS's facility in Cuiaba, Brazil, with final low detection fire assay analysis completed via its laboratory in Belo Horizonte, Brazil. To ensure rigorous QA/QC 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 to be reported in late July or early August.

Samples from the auger program, which included soil -- saprolite and remnant rock fragments were geologically logged to inform the continuing preparation of a 3-D geological -- lithogeochemical model for the east anomaly. Initial observations suggests that areas where the depth to bedrock exceeds 20 m reflect a more pronounced, deeper regolith profile developed over potentially mineralized and hydrothermally altered areas where the bedrock granite gneiss and schist has been more highly sheared and preferentially weathered. These observations are supported by the presence of sericite alteration coincident with disseminated limonitic boxwork (after pyrite) logged in samples collected from a number of the deeper Auger holes.

Rob Birmingham, chief executive officer of Goldhaven Resources, commented: "We are pleased to announce the successful completion of our auger drilling program at the Copecal gold project, with a total of 2,153.40 metres drilled. All assay samples have been shipped for analysis. While our initial efforts were focused on the east target, we are particularly encouraged to have concluded the program by drilling the more prominent anomaly on the west target. Our attention now turns to the upcoming very low frequency (VLF) electromagnetic geophysical survey, expected to commence mid-month, which will enhance our understanding of the structures within the east and west targets, as well as highlight additional prospective zones across the property."

VLF-EM survey overview

Looking ahead, Goldhaven anticipates launching a drone-borne very low frequency (VLF) electromagnetic survey in July. This survey will target the structural trends believed to be favourable hosts for gold mineralization, covering both the east and west gold-in-soil anomalies as well as their potential strike extensions. The integration of VLF-EM 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 the Copecal gold project: a brief history

The Copecal gold project is strategically situated within the Alta Floresta gold province, a historically productive region that has yielded substantial gold discoveries since the late 1970s. Goldhaven's tenements cover a total of 3,681 hectares in a geologically favourable setting within the Juruena gold province of Brazil.

The Juruena gold province, also known as the Juruena Magmatic Arc, is an orogenic belt highly prospective for mesothermal shear-related and intrusion-related gold deposits, such as G-Mining's Tocantinzinho deposit. Additionally, the region hosts recently identified porphyry-style deposits (for example, Serabi and Jaca) and epithermal-style deposits (for example, X1, Aura). The presence of multiple deposit styles, along with the confirmation of large-scale gold deposits in the Juruena province of Brazil, underscores the significant potential of the Copecal gold project.

Recent exploration programs, including geochemical soil sampling, drone-mounted magnetometry surveys and historical drilling data, indicate the presence of multiple gold-bearing structures. Notably, AngloGold Ashanti previously conducted systematic exploration on the property from 2010 to 2016, including auger and air-core drilling, geophysical surveys, and rock geochemistry, identifying multiple zones of anomalous gold mineralization.

The Copecal gold project benefits from extensive historical work, with AngloGold Ashanti's exploration confirming gold and arsenic anomalies, indicative of significant mineralization potential. Soil sampling grids and follow-up auger drilling in key areas revealed consistent gold values over wide zones, further supporting the presence of a substantial mineralized system.

Engaged Fairfax Partners Inc.

On July 8, 2025, the company entered into a consulting agreement with Fairfax Partners Inc. Pursuant to the consulting agreement, Fairfax has agreed to provide specialized consulting services, including content creation and management, to support the issuer's growth and communication with investors. The consulting agreement will remain in effect for a period of one month commencing on July 8, 2025. In accordance with the terms and conditions of the consulting agreement and as consideration for the services provided by Fairfax, the company agreed to pay an aggregate cash fee of up to $65,000, plus applicable taxes, at the company's discretion.

The company will not issue any securities or options to purchase securities to Fairfax as compensation for its services.

About Goldhaven Resources Corp.

Goldhaven Resources 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 and country manager of Goldhaven.

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