Mr. James Hedalen reports

KOBREA DISCOVERS LARGE HYDROTHERMAL BRECCIA BODY IN CUPRUM TREND - WESTERN MALARGUE MINING DISTRICT - MENDOZA PROVINCE, ARGENTINA

Kobrea Exploration Corp. has discovered a 1,250-metre-by-500-metre hydrothermal breccia body in the Cuprum trend within the company's Western Malargue copper projects. Kobrea holds the right to earn a 100-per-cent interest in seven projects totalling 733 square kilometres in southwestern Mendoza province, Argentina (see the company's Aug. 19, 2024, news release for details).

"The target development initiative across Kobrea's Western Malargue copper projects began in December and continues in tandem with the drilling at El Perdido," commented James Hedalen, chief executive officer. "Our team has identified, mapped and sampled a previously unknown 1,250-metre-by-500-metre hydrothermal breccia at target KBX-17. The breccia is anomalous in copper, and samples in the diorite host rock contain up to 1.6 per cent copper in the immediate vicinity of the breccia body. The interpretation of our field geologists is that this target is a vertically zoned, sulphide-cemented hydrothermal breccia originating from a porphyry system at depth. This result highlights the exploration upside across this exceptional land package and validates our exploration thesis that there is more to be discovered across these projects, beyond what has been outlined by previous operators."

Target KBX-17

Target KBX-17 was first identified by Kobrea in March of 2025 when field crews noticed a multikilometre colour anomaly from a nearby four-by-four road. A brief investigation resulted in the identification of dioritic intrusive rock samples exhibiting disseminated chalcopyrite intergrown with secondary biotite. There is no reference to or mention of this prospect by previous operators, and the prospect has seen no drilling to date.

A follow-up program at KBX-17 comprising detailed geological mapping and rock chip sampling was completed in December of 2025. The program outlined a 1,250-metre-by-500-metre hydrothermal breccia body cemented by iron oxides and locally, where preserved, by massive pyrite. The strongly leached and weathered hydrothermal breccia is anomalous in copper, with numerous samples grading between 161 parts per million and 408 ppm copper. In the immediate proximity to the breccia body, samples of the host rock diorite containing up to 1.6 per cent copper were collected. The large hydrothermal breccia intrudes a diorite host rock, characterized as an equigranular diorite stock measuring four by two kilometres that exhibits propylitic alteration where it is in contact with the hydrothermal breccia unit. The diorite stock intrudes upper Jurassic-aged sedimentary rocks belonging to the Tordillo formation.

Several other smaller hydrothermal breccia bodies within the diorite stock were mapped, including a 300-metre-by-150-metre magnetite cemented breccia with samples up to 223 ppm copper.

The KBX-17 target is eight kilometres from an existing road. Kobrea is planning an induced polarization survey that will cover the exploration target to investigate the potential of an underlying porphyry system. The target development crew is currently at El Destino porphyry copper-gold prospect and will continue systematically moving across the Western Malargue copper projects where it will be undertaking geological mapping and geochemical sampling activities at several porphyry deposit-scale prospects.

Quality assurance/quality control procedures

Rock chip sampling was performed by Kobrea field geologists. Representative samples were collected at outcropping rock over the course of the field mapping program, with sample weights between 0.84 and 2.5 kilograms. Samples were placed into polyethylene bags along with a unique sample identifier, and sampling information was recorded in the field. Sealed sample bags were transported by Kobrea personnel to Alex Stewart International in Mendoza City, Argentina, where samples were weighed, dried, crushed and pulverized in preparation for analysis. All samples were analyzed using analytical package ICP-MA-39, whereby 0.2-gram aliquots are subjected to a four-acid digest and concentrations of 39 different elements are resolved with an inductively coupled plasma optical emission spectroscopy finish. All samples were also analyzed for gold concentration whereby 30-gram aliquots are subjected to fire assay analysis utilizing an atomic absortion spectroscopy finish. Samples overlimit in copper (greater than 10,000 parts per million) during the ICP-MA-39 analysis were reanalyzed with ICP-ORE analysis, whereby 0.2-gram aliquots are dissolved in 100 millilitres of a mixture of highly oxidizing acids, and results for 19 elements are determined by ICP-OES analysis with a higher limit of detection.

Additional quality control/quality assurance procedures, including blank and standard insertion and analysis, are performed internally by Alex Stewart International Argentina in Mendoza, Argentina, an accredited testing laboratory conforming with the requirements of ISO/IEC 17025:2017, which is independent of Kobrea.

Qualified person

The scientific and technical information in this news release has been reviewed and approved by Rory Ritchie, PGeo, vice-president, exploration, and director of Kobrea, a qualified person under National Instrument 43-101.

About Kobrea Exploration Corp.

Kobrea is a mineral exploration and development company focused on the acquisition and exploration of base metal projects. Kobrea holds the right to earn a 100-per-cent interest in seven projects totalling over 733 square kilometres in southwestern Mendoza province, Argentina (see the company's Aug. 19, 2024, news release for details). The properties are considered highly prospective for porphyry copper and porphyry copper-gold deposits. Numerous porphyry copper targets have been outlined to date exhibiting multikilometre hydrothermal alteration footprints, anomalous copper plus or minus gold plus or minus molybdenum geochemistry, quartz stockwork veining, localized hydrothermal breccias, and Miocene-aged dacitic to dioritic porphyry intrusions. Kobrea also holds a 100-per-cent interest in the Upland copper project in British Columbia, Canada.

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