Mr. Enrico Gay reports

ALGO GRANDE COPPER COMMENCES PHASE II DRILL PROGRAM AT ADELITA PROJECT

Algo Grande Copper Corp. has commenced drilling on its phase II exploration program at the company's 100-per-cent-owned Adelita project in Sonora, Mexico. Major Drilling Group International Inc. has mobilized to site and spudded hole AG_GC_PH2_001 at the Cerro Grande copper-silver-gold skarn target on June 9, 2026, targeting a planned depth of 500 metres. The hole is designed to extend the Cerro Grande skarn discovery 100 metres to the north of the phase I drill footprint. Subsequent holes will systematically expand the discovery to the south and northwest along a 2.5-kilometre corridor defined by magnetic surveys, soil geochemistry and geological mapping.

The 8,000-metre program targets expansion of the Cerro Grande discovery along the 2.5-kilometre corridor, along with maiden drill programs at the Cerro Potrero South skarn and Las Trancas epithermal targets. Full program details are provided in the company's news release dated May 28, 2026 (available under the company's profile on SEDAR+).

The company will provide updates as drilling progresses.

About Algo Grande Copper Corp.

Algo Grande Copper is a growth-focused mineral exploration company advancing the Adelita project, a district-scale, multisystem copper-silver-gold opportunity positioned in the prolific Arizona-Sonora copper belt.

Algo Grande is dedicated to unlocking the full mineral potential of this underexplored corridor through disciplined data-driven exploration, technical excellence and a firm commitment to value creation for shareholders. The 5,895-hectare Adelita project is anchored by the high-grade Cerro Grande copper-silver-gold skarn discovery, which exhibits strong continuity along a defined corridor extending over six kilometres. Reprocessing of legacy geophysical data and field mapping indicate the presence of a potential porphyry system at depth, suggesting a classic skarn-porphyry mineralization model similar to major deposits found throughout northwestern Mexico.

We seek Safe Harbor.