Mr. Zachary Dymala-Dolesky reports

SUPER COPPER DEFINES PROPERTY-SCALE AND STRUCTURALLY CONTROLLED COPPER-GOLD SYSTEM AT THE CASTILLA PROJECT

Super Copper Corp. has released results from its phase 1 geophysics program at the 100-per-cent-owned Castilla project. The integrated data sets define property-scale alteration and structural corridors that are spatially coincident with the high-grade gold and copper rock samples previously reported (see news release dated Jan. 15, 2026), and have identified a new, previously unsampled iron-oxide gossan target in the northeastern portion of the project.

Highlights:

• Property-scale alteration system mapped: WV3 hyperspectral mapping defines a large, coherent zone of phyllic (sericite) and propylitic (chlorite-epidote) alteration across central and southwestern Castilla, spatially coincident with the company's highest-grade surface samples.
• Structural control confirmed: Drone magnetic data (first vertical derivative of the reduced-to-pole field) define conjugate northwest- and northeast-trending structural corridors. The highest-grade gold and copper rock samples cluster at the intersections of these structures, the dilational settings that typically focus mineralization in Atacama iron-oxide-copper-gold systems.
• Iron-oxide alteration over the interpreted iron oxide copper/gold core: Mapped hematite alteration coincides with the magnetite-rich, high-iron zone in north-central Castilla, including sample E02505 (17.7 per cent copper and 39.1 per cent iron), consistent with an IOCG core.
• New iron-oxide gossan target identified: A large iron-oxide gossan and goethite footprint has been mapped in northeastern Castilla, in an area not covered by the company's 2025 rock sampling program. Gossans represent weathered, oxidized caps to sulphide bodies and are a recognized vector to copper mineralization.
• Alteration assemblage supports the IOCG model: The near absence of advanced argillic alteration (no detectable alunite and only minor kaolinite) is consistent with an IOCG/structurally controlled system rather than a high-sulphidation epithermal system, helping to refine the exploration model.
• Depth-targeting data sets to follow: Total-field magnetic products, a 3-D magnetization vector inversion and an induced polarization survey are planned to model magnetite (IOCG) bodies and sulphide mineralization at depth, and to rank drill-ready targets for a maiden diamond drill program at Castilla.

Geophysical and alteration survey

The drone magnetic survey was completed at Castilla over the company's claim package, with magnetic data processing, structural interpretation and 3-D modelling performed by Apex Geoscience Ltd. The first vertical derivative of the reduced-to-pole field sharpens near-surface magnetic edges and reveals the project's structural backbone: a dominant northwest-southeast trend, consistent with the regional Atacama structural grain, cut by a northeast-east-northeast set of cross-structures. Where those two directions cross is exactly where the highest-grade samples sit.

The WV3 alteration mapping was completed by PhotoSat Information Ltd. using WorldView-3 satellite imagery and PhotoSat's deep-learning mineral mapping process, delivered to the company on June 11, 2026. The survey mapped 12 alteration mineral products at two-metre resolution. Key results:

• Sericite (phyllic) alteration: widespread and intense across the central and southwestern Project area, hosting the company's central gold corridor and southwestern copper occurrences;
• Chlorite-epidote (propylitic) alteration: extensive across the southwestern and central project area, forming a broad peripheral halo;
• Hematite and iron-oxide alteration: concentrated in north-central Castilla, coincident with the interpreted magnetite-rich IOCG core and historical iron-oxide workings;
• Iron-oxide gossans and goethite: a large footprint in northeastern Castilla, in ground not previously sampled by the company, interpreted as a new target.

Together, the structural and alteration data sets indicate that the high-grade surface mineralization at Castilla sits within a large, coherent hydrothermal alteration system controlled by intersecting structures, a setting consistent with IOCG-style deposits of the Chilean copper belt.

Management commentary

"Castilla is coming together fast," said Zachary Dolesky, chief executive officer of Super Copper. "We already knew the surface grades were excellent with up to 53.8 g/t gold and 17.7 per cent copper. This new data set adds scale and control. We can now see that our best hits sit at the intersection of structure, alteration and geochemistry, inside a property-scale hydrothermal system. The alteration assemblage points at an IOCG model, and, on top of that, we've identified an entirely new gossan target in the northeast that we've never sampled. The upcoming 3-D magnetic inversion and IP survey will let us image potential sulphides at depth and push the strongest targets towards a prospective drilling program."

Next steps

The company is advancing the following work programs at Castilla:

1. Total-field magnetic products and 3-D MVI inversion: Apex will deliver the total magnetic intensity (reduced-to-pole) imagery and a 3-D MVI model to image magnetite-bearing bodies at depth and resolve magnetite-additive (IOCG core) versus magnetite-destructive (alteration) domains. The MVI methodology solves for magnetization direction and is suited to settings where remanent magnetization is present.
2. Induced polarization survey: An induced polarization survey is planned to map chargeability associated with sulphide mineralization below the depth of effective surface sampling. Survey design will be finalized following review of the magnetic and alteration data sets.
3. Target ranking and drill planning: all data sets: surface geochemistry, structure, alteration, 3-D magnetics and IP will be integrated under the supervision of the company's qualified person to prioritize and rank targets for a prospective maiden drill program at Castilla.

These programs at Castilla advance in parallel with the company's maiden diamond drill program at its Cordillera Cobre project, where drilling of geophysically defined IOCG targets is expected to start soon.

Qualified person

The scientific and technical information in this news release has been reviewed and approved by Michael B. Dufresne, MSc, PGeo, PGeol, of Apex Geoscience, which is an independent qualified person as defined under National Instrument 43-101 (Standards of Disclosure for Mineral Projects).

About Super Copper Corp.

Super Copper is a mining exploration company focused on acquiring, advancing and consolidating global copper assets from early discovery through late-stage development. The company is currently advancing its copper projects in Atacama, Chile, a region with world-class infrastructure and the presence of global majors. By operating a single, integrated technical team and a milestone-driven acquisition strategy, Super Copper aims to build a portfolio of scalable projects capable of supplying the world's accelerating demand for copper.

We seek Safe Harbor.