Mr. Rob Birmingham reports

GOLDHAVEN RESOURCES TO ACQUIRE STRATEGIC HIGH-GRADE TUNGSTEN CLAIMS WITHIN ITS MAGNO PROJECT IN NORTHWESTERN BRITISH COLUMBIA

Goldhaven Resources Corp. has entered into an agreement to acquire the Kuhn, Dead Goat and M3 claims located in northwestern British Columbia, within the company's flagship Magno project. The claims total 1,100.6 acres and host a historic resource of 409,300 tonnes at 0.48 per cent WO3 (tungsten trioxide) and 0.134 per cent MoS2 (molybdenum disulphide) in the Kuhn North zone. These estimates are historical in nature and do not meet National Instrument 43-101 standards and therefore should not be relied upon .

Tungsten: a critical mineral of strategic importance to North America

Tungsten has emerged as a critical mineral of strategic importance due to its unmatched physical properties and indispensable role in high performance applications. With the highest melting point of any metal and exceptional density and hardness, tungsten is essential to modern defence systems, including armor-piercing munitions, kinetic energy penetrators and aircraft turbine components. Its resilience to extreme temperatures and wear makes it equally vital in aerospace, advanced manufacturing and nuclear energy. These characteristics, combined with a lack of viable substitutes, position tungsten as a cornerstone of national security and industrial competitiveness.

However, the global tungsten supply chain faces a significant geopolitical risk. China, which controls over 80 per cent of global tungsten production and refining, enacted strict export controls in February, 2025, that have effectively halted shipments of key tungsten products. Though not an outright ban, China has issued no export licences under the new regime, creating a de facto blockade that has shocked global markets and driven to increased prices and supply uncertainty. This move highlights the urgent need for diversified, secure tungsten supply chains as Western nations confront the strategic vulnerabilities of relying on a single dominant supplier for such a critical resource. Analysts anticipate that Chinese-supplied tungsten may be scarce in the global markets driving companies and countries to explore for alternative sources and strategies to mitigate the impact of China's export controls.

Acquisition highlights:

• The Kuhn and Dead Goat properties are in the Cassiar mining district, British Columbia, and have been explored since at least the 1970s;
• Historic drilling by Shell Canada included 17 diamond drill holes totalling 1,766 metres, confirming the presence of high-grade scheelite (CaWO4) and molybdenite (MoS2);
• Well-developed skarn-type mineralization system;
• Recent exploration has confirmed significant tungsten and molybdenum mineralization in metasomatic skarn lenses, with continuing potential for resource expansion;
• Historical resource estimates.

Historical estimate disclosure: This resource estimate constitutes a historical estimate, as that term is defined in National Instrument 43-101 -- Disclosure Standards for Mineral Projects. This information is derived from summary report McDame project 82-546-10512, filed by Shell Canada Resources. A qualified person has not done sufficient work to classify the historical estimate as current mineral resources or mineral reserves, and accordingly the estimates may not be relevant or reliable. The company is not treating the historical estimate as current. In order to verify the historical estimate, a qualified person needs to review the historical data, review any work completed at the projects since the date of the historical estimate and complete a new mineral resource estimate.

Terms of the acquisition

Goldhaven has entered into a title transfer agreement dated June 12, 2025, with Fundamental Resources Corp. (the vendor), pursuant to which it is entitled to acquire a 100-per-cent interest in the claims located in the Cassiar mining district, British Columbia. As consideration, the company will issue 1.25 million common shares (the consideration shares) to the vendor, subject to a 36-month escrow release schedule pursuant to which 10 per cent of the consideration shares will be released on completion of the transaction and 15 per cent on each six-month anniversary thereof. One hundred per cent of the consideration shares will be subject to the standard Canadian statutory four-month hold period. The transaction is expected to be completed on or about June 24, 2025.

Rob Birmingham, chief executive officer of Goldhaven Resources, stated: "We are very pleased to expand our presence in this underexplored but highly prospective region of British Columbia. The Kuhn, Dead Goat and M3 claims strengthen our strategic land position within the Magno project and introduce compelling tungsten upside with additional zones of copper, zinc and molybdenum to the Goldhaven story. The Kuhn and Dead Goat deposits share a geological setting similar to Cantung and Mactung, both large tungsten skarn deposits in Canada.

"This strategic acquisition comes on the heels of continued strong demand for commodities caught in the middle of global tariff battles -- particularly tungsten. Historic work by Shell Canada, coupled with more recent exploration by Fundamental Resources, has highlighted the potential for a high-grade skarn system that could support a future development opportunity."

The company plans to conduct a detailed review of historic data and design follow-up exploration programs to confirm and expand the known mineralization.

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 technical and scientific information contained in this news release has been reviewed and approved by Lindsay Bottomer, PGeo, who is a qualified person as defined under National Instrument 43-101 and a consultant of the company.

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