Mr. Charles Ross reports

FOUR NINES GOLD ADVANCES TOWARD MAIDEN DRILL PROGRAM WITH PROPERTY-WIDE GEOPHYSICAL SURVEY AT HAYDEN HILL

Four Nines Gold Inc. has commenced a comprehensive geophysical survey on the Hayden Hill gold project in northern California, representing another important milestone as the company advances toward its fully financed maiden drill program scheduled for this summer.

The program is designed to further refine and prioritize drill targets generated through Four Nines' 3-D geological modelling, which indicates the potential for structurally controlled gold mineralization beneath and peripheral to historically mined areas that have not been systematically explored for nearly three decades.

Four Nines has engaged Zonge International Inc., a recognized leader in geophysical data acquisition, to complete the program through its Reno, Nev., office. The survey is designed to map subsurface physical properties, and provide high-resolution insight into the potential extension of mineralized veins, feeder structures, faults and breccia zones beneath and around historically mined areas-targets that have never been tested with modern exploration tools.

The survey represents the latest step in Four Nines' systematic approach to evaluating the Hayden Hill gold project through a modern geological framework. Historical operators mined approximately 480,000 ounces of gold and 1.3 million ounces of silver from the property, primarily utilizing a shallow disseminated mineralization model. Four Nines' technical team believes modern structural interpretation indicates the presence of additional high-priority targets beneath and adjacent to the historical pits, which are now being prepared for drill testing.

The program includes induced polarization (IP) and resistivity surveying across the property, complemented by a controlled-source audio-magnetotelluric (CSAMT) line to enhance deeper structural imaging. Stations are positioned on an approximately 100-metre-by-100-metre grid using a nine-spread dipole-dipole array, with data collected using Zonge's industry-standard GDP-3224 receivers and GGT-10 transmitter.

To maximize the value of the data set, Four Nines has retained Jim Wright, one of the most respected geophysicists in the Western United States. Mr. Wright brings decades of experience in successful target definition, including his tenure as senior geophysicist at Newmont Mining Corp. He will work closely with the company's geological team to integrate geophysical results into the evolving 3-D model of the Hayden Hill gold project.

Management comment

Charles Ross, president of Four Nines Gold, stated:

"Every data set we collect continues to reinforce the quality and scale of the opportunity we see at the Hayden Hill gold project. Our team has already identified a number of compelling high-grade drill targets through detailed geological modelling and reinterpretation of historical data. The addition of Zonge International, a recognized leader in geophysical data acquisition, and the involvement of Jim Wright, one of the most respected geophysicists in the Western United States, further strengthens the technical foundation of our exploration program. As we integrate these results into our evolving 3-D model and prepare for drilling this summer, we believe the Hayden Hill gold project is entering a pivotal stage that could significantly advance our understanding of the broader mineralized system."

Qualified person

David Flint, MSc, AIPG-CPG, vice-president of exploration, a qualified person as defined in National Instrument 43-101, has reviewed and approved the technical information in this news release.

About Four Nines Gold Inc.

Four Nines Gold is a North American gold exploration company focused on unlocking high-grade potential at past-producing assets. The company's flagship Hayden Hill gold project in northern California produced 480,000 ounces of gold and 1.3 million ounces of silver, and has not been drilled in nearly three decades. Leveraging a modern 3-D geological model, Four Nines has identified multiple untested high-grade feeder zones beneath and adjacent to historic workings-targets missed by previous operators due to shallow drilling and outdated interpretations.

Four Nines is fully financed for its maiden drill program, with 10 approved drill locations and field activities under way as of June, 2026. Led by a technical team with a strong discovery record and deep experience in epithermal gold systems, the company is preparing a high-impact drill campaign designed to evaluate deeper structural corridors and expand the project. Four Nines continues to assess additional opportunities in stable jurisdictions, and is committed to responsible exploration, transparent communication and long-term value creation for shareholders.

Four Nines has a right to acquire 100 per cent of the Hayden Hill gold project from a subsidiary of Kinross Gold U.S.A. Inc. The Hayden Hill gold project is a former-producing gold mine that was explored by Amax Gold Inc. through 99,862 metres of drilling in 742 holes and for which there has been no systematic exploration since the mine closed in 1997. Kinross acquired Amax Gold Inc. in 1998. The Hayden Hill gold project is located on private land, for which drill permits for the initial exploration program have been received from Lassen county.

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