Atico Mining Corporation (TSX-V: ATY) (OTCIQ: ATCMF) announces its operating results for the three months ended June 30, 2026 from its El Roble mine. Production for the quarter totaled 2.08 million pounds of copper and 1,465 ounces of gold in concentrates.

“The El Roble mine performed as planned during this period and delivered incremental improvements compared to the first quarter, particularly in copper grades and metal recovery. Gold grade as well as output were impacted as we temporarily mine through a lower gold grade zone of the deposit,” said Fernando E. Ganoza, CEO. “In the second half of the year, we are targeting an updated reserve report and anticipate further gains in production as we optimize new operational equipment, gaining further access to higher-grade ore zones.”

Second Quarter Operational Highlights

• Production of 2.08 million pounds of copper contained in concentrates; a decrease of 4% over Q2 2025.
• Production of 1,465 ounces of gold contained in concentrates; a decrease of 38% over Q2 2025.
• Average processed tonnes per day of 786, a decrease of 5% over Q2 2025.
• Copper head grade of 1.91%, an increase of 10% over Q2 2025.
• Gold head grade of 1.25 grams per tonne; a decrease of 40% over Q2 2025.
• Copper and gold recovery of 92.3% and 68%; no significant change for copper and an increase of 18% for gold, respectively, over Q2 2025.

Second Quarter Operational Details

Concentrate Inventory

The number of shipments the Company can export in any given quarter depends on several variables some of which the Company does not control, hence there may be an inherent variability in tonnes shipped quarter to quarter.

El Roble Mine

The El Roble mine is a high grade, underground copper and gold mine with nominal processing plant capacity of 1,000 tonnes per day, located in the Department of Choco in Colombia. Its commercial product is a copper-gold concentrate.

Since obtaining control of the mine on November 22, 2013, Atico has upgraded the operation from a historical nominal capacity of 400 tonnes per day.

El Roble’s reserves estimate, with an effective date of March 12, 2024, includes Proven and Probable mineral reserves of 828 thousand tonnes averaging 2.49% Cu, 2.20 g/t Au and a life of mine until Q1-2027. A full NI 43-101 technical report is available on SEDAR+. For more information on the reserves estimate refer to SEDAR+ and on the Company’s website.

Mineralization is open at depth and along strike and the Company plans to further test the limits of the deposit. On the larger land package, the Company has identified a prospective stratigraphic contact between volcanic rocks and black and grey pelagic sediments and cherts that has been traced by Atico geologists for ten kilometers. This contact has been determined to be an important control on VMS mineralization on which Atico has identified numerous target areas prospective for VMS type mineralization occurrence, which is the focus of the current surface drill program at El Roble.

Qualified Person

Mr. Thomas Kelly (SME Registered Member 1696580), advisor to the Company and a qualified person under National Instrument 43-101 standards, is responsible for ensuring that the technical information contained in this news release is an accurate summary of the original reports and data provided to or developed by Atico.

About Atico Mining Corporation

Atico is a growth-oriented Company, focused on exploring, developing and mining copper and gold projects in Latin America. The Company generates significant cash flow through the operation of the El Roble mine and is developing its high-grade La Plata VMS project in Ecuador. The Company is also pursuing additional acquisition of advanced stage opportunities.