Mr. Fiore Aliperti of Metallis reports

METALLIS SECURES DRILLING CONTRACT FOR MAIDEN PROGRAM AT GREYHOUND PROPERTY, IDAHO

Metallis Resources Inc. has signed a drilling contract with Foraco Drilling Ltd., a leading global drilling services provider, to carry out the upcoming inaugural drill program at the company's optioned Greyhound property, located in the historic Stibnite mining district of central Idaho, United States. The company has filed the required notice of mining exploration activity with respect to the patented claims, allowing the program to begin in August.

The program is designed to test high-grade silver-gold-antimony targets (Metallis Resources news release -- May 21, 2025) within a 3.5-kilometre-long mineralized shear zone. The area hosts several historic mining adits but has never been drill tested using modern exploration methods.

Metallis chief executive officer Fiore Aliperti commented: "Today marks a significant milestone for Metallis. Meticulous planning and preparation took a number of months, and now we're ready to drill test this very exciting precious metals and critical minerals target. The Greyhound property sits in the heart of Idaho's historic Stibnite mining district, both the historical results and our surface exploration to date has already delivered exceptional results, the geopolitical support has never been stronger, and it's the property's maiden drilling campaign." He went on to add: "With Foraco's proven expertise and our permits now secured, we're positioned to unlock significant value for our shareholders. This inaugural drill program represents a key milestone within our strategic vision of advancing high-quality assets in mining-friendly jurisdictions with strong commodity fundamentals. The timing couldn't be better, with silver and gold at record highs along with growing recognition of antimony as a critical mineral essential for certain defense technologies, metals manufacturing and in the semiconductor industry."

Key highlights:

• Drill contract signed with Foraco Drilling, a globally recognized drilling contractor;
• Approximately 2,000-metre planned drill program to test a robust structural corridor with confirmed high-grade mineralization at surface and underground;
• Program targets 3.5 km long mineralized shear zone with multiple historic mining adits;
• First-ever drilling campaign on the property.

About Foraco International SA

Foraco International SA (TSX: FAR) is one of the world's largest global drilling service providers, offering high-quality drilling solutions to the mining and water industries across five continents. With a strong commitment to safety, innovation and environmental stewardship, Foraco delivers a wide range of drilling services including core, reverse circulation and directional drilling to some of the most challenging and remote exploration projects worldwide.

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 Au (gold), Ag (silver), Sb (antimony), Pb (lead) and Zn (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 -- 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 is a Vancouver-based company focused on the exploration for gold, copper and silver on its flagship 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.

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