Mr. Fiore Aliperti reports

METALLIS COMMENCES DRILLING AT GREYHOUND, IDAHO

Metallis Resources Inc. has commenced its inaugural drill program at the Greyhound property, located in the historic Stibnite mining district of central Idaho. This first-ever drilling campaign will test high-grade silver, gold and antimony targets within a 3.5-kilometre-long mineralized shear zone.

Fiore Aliperti, chief executive officer of Metallis, commented: "Launching our inaugural drill program at Greyhound marks a milestone moment for Metallis and for this historic property. For the first time, we are drill testing a richly mineralized shear zone that has intrigued prospectors for over a century but has never truly been explored with modern techniques. The combination of encouraging historical work, our detailed groundwork and the presence of multiple high-grade showings make the Greyhound a highly compelling opportunity. With Foraco Drilling as our partner, our team is excited to begin revealing the true potential of this underexplored property. We believe the results from this inaugural program will provide the foundation for significant value creation for our shareholders."

Key highlights

• Drill program has been contracted to Foraco Drilling Ltd., a leading global drilling services provider;
• Up to 2,000 metres of diamond drilling is planned for the inaugural campaign;
• The program has been designed to test three high-priority targets along the 3.5-kilometre mineralized shear zone;
• This is the first systematic drill testing to ever be done at Greyhound, a historically significant but underexplored property.

About the program

The 2025 program will consist of approximately 2,000 metres of diamond drilling across three high-priority areas (see news release dated May 21, 2025). Drilling will test the 1,350-foot target, where channel sampling along a 36.9-metre length of the Lower Rufus adit returned 1.85 grams per tonne Au (gold) and 785 g/t Ag (silver), which warrants modern exploration; the Bulldog target, a broad shear zone with multiple quartz-sulphide veins and existing road access; and the Birdie target, a parallel shear trend with adits and trenches that point to additional mineralized potential.

About the Greyhound property

In February, 2024, the company optioned the property which is located in Custer county, Idaho, approximately 42 kilometres northwest of the town of Stanley and 35 km south of Perpetua Resources' Stibnite mine. The property was the center of an active silver mining camp in the early 1900s and at one point contained a smelter and two active mines situated along the 3.5 km Greyhound shear.

The Greyhound targets are hosted by prominent shear zones with polymetallic quartz -- sulphide veins containing elevated concentrations of gold, silver, antimony (a critical mineral), lead and zinc. They are comparable with numerous mines in North Idaho's Silver Valley along Interstate 90. This famous district is one of the most prolific silver districts in the world. The total quantities produced are impressive: over a billion ounces of silver, three million tons of zinc and eight million tons of lead totalling over $6-billion in value, ranking the Silver Valley among the top 10 mining districts in world history.

Qualified person

David Dupre, PGeo, vice-president of exploration and the qualified person, as defined by National Instrument 43-101, has reviewed and approved the technical information contained in this release.

About Metallis Resources Inc.

Metallis Resources is a Vancouver-based company focused on the exploration for gold, copper and silver on its 100-per-cent-owned Kirkham property in Canada, situated in northwest British Columbia's Golden Triangle, and on the Greyhound property, a gold/silver/antimony target in Idaho, United States.

Metallis trades under the symbols MTS on the TSX Venture Exchange, MTLFF on the OTCQB Exchange and 0CVM on the Frankfurt Stock Exchange, and has 84,680,003 common shares outstanding.

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