Mr. Rob L'Heureux reports

METALERO REPORTS EXTENDED COPPER AND GOLD SOIL RESULTS AT THE CANTIN TARGET ON THE BENSON PROJECT, QUESNEL TROUGH, BRITISH COLUMBIA.

Metalero Mining Corp. has released additional results from its recently completed ionic leach soil geochemical survey at the Cantin target, part of the company's road-accessible flagship Benson project, located in the prolific Quesnel trough of central British Columbia.

"The results from our two-week follow-up sampling campaign at Cantin have expanded and refined our previously defined copper and gold anomalies, which cover more than 23 square kilometres (combined) and remain open in several directions. We now see two discrete soil anomalies, each of which correlate with the Quest artificial intelligence targets, which drew us to Benson in the first place," stated Rob L'Heureux, president and chief executive officer of Metalero Mining. "And considering these Cantin anomalies represent less than 15 per cetn of the benson project area, we are excited to explore the other target areas while moving Cantin ahead to our maiden drill campaign."

Both the copper and gold soil analyses at Cantin show two distinct anomalies overlying the strong magnetic signature from airborne geophysical surveys. The Cantin Northwest anomaly (more than eight square kilometres (km)) includes approximately 135 samples, which show the anomaly could extend to the northeast, northwest or southwest directions. The Cantin Southeast anomaly (more than 15 square km) comprises roughly 260 samples, and shows the potential to still be open to the south and northeast.

The two 2025 ionic leach programs, conducted in the spring and fall of 2025, were designed to evaluate and refine copper-gold targets across the underexplored Cantin area, where historical exploration and recent Geoscience B.C. artificial intelligence (AI) work has indicated strong potential for porphyry-style mineralization known as the Quest targets. A total of 835 soil samples have been collected at the Cantin, Sundberg and Chiaz targets with a 100-metre (m) sample spacing and sample lines 500 to 1,500 metres apart.

Corporate undertakings

Metalero is pleased to announce a non-brokered private placement, which will consist of up to three million common shares at a price of 15 cents per share for total gross proceeds of $450,000. The net proceeds from the offering are intended to finance continuing exploration and development activities on the company's mineral properties and for general working capital purposes. The offering is subject to regulatory approval, including that of the TSX Venture Exchange. All securities issued will be subject to a statutory hold period of four months and one day from the date of issuance.

The company has granted a total of 2.3 million incentive stock options to certain officers, directors and consultants of the company. Each stock option is exercisable at a price of 15 cents per common share for a period of five years from the date of grant, subject to the terms of the company's 10-per-cent rolling stock option plan and the policies of the TSX Venture Exchange.

QA/QC (quality assurance/quality control) procedures

Sample preparation and analysis for the Benson soil survey was completed at the ALS Global facility in Vancouver, B.C. A non-biased 50-gram (g) nominal soil sample was collected from the entire field sample without drying or screening. The ionic leach method was used to analyze samples for 61 elements. This procedure is defined by static sodium cyanide leach using ammonium chloride, citric acid and EDTA, with the leachant buffered to an alkaline pH of 8.5. A secure chain of custody procedure was maintained in storing and transporting samples.

Benson project background

The Benson project is strategically located in the Quesnel trough, one of Canada's most important mineral belts. The Quesnel trough is a Triassic/Jurassic-age belt of volcano sedimentary and intrusive rocks, which hosts more than 360 alkalic copper-gold porphyry occurrences and deposits. The more-than-1,500-kilometre-long Quesnel trough runs through the middle of British Columbia, stretching from the United States to Yukon. It hosts several types of gold deposits and numerous major mines, which produce copper and gold, as well as variable amounts of silver.

High-profile and long-lived mines in the Quesnel trough include Highland Valley, Mt. Milligan, New Afton and Kemess, which are complemented by recent exploration work, including Woodjam, MPD and Kwanika, and the extensive staking by Australian mining giant, the Fortescue Group.

The Benson project lies close to infrastructure and is traversed by Highway 26 and a vast network of logging roads allowing for ready access to all parts of the property and capital-efficient exploration. The large land package covers five different target areas illuminated by recent AI work by Geoscience B.C. (Mitchinson et al., Geoscience B.C. report 2022-07). This AI study incorporated a wide variety of historical data sets, including geophysics, geology, sampling information and drilling data (where present), to identify high potential (porphyry-like) anomalies with similarities to known porphyry deposits elsewhere in the belt. Even the limited historical exploration at Benson has identified numerous gold and copper surface geochemical anomalies while modest, historical drill programs have intersected skarn and epithermal gold and silver mineralization, which are both intrusive-related styles of mineralization and are commonly associated with porphyry systems.

About Metalero Mining Corp.

Metalero Mining is a Canadian-based junior exploration company focused on copper and gold projects in the Americas. Its 173-square-kilometre, road-accessible Benson project serves as Metalero's flagship and is host to five prospects containing gold and copper within porphyry-related mineralized systems.

Qualified person

The technical content of this news release pertaining to the Benson project was reviewed and approved by Michael Dufresne, MSc, PGeol, PGeo, a non-independent qualified person as defined by National Instrument 43-101.

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