Atico Mining Corporation (TSX-V: ATY) (OTCQX: ATCMF) announces its operating results for the three months ended March 31, 2025 from its El Roble mine. Production for the quarter totaled 2.23 million pounds of copper and 1,553 ounces of gold in concentrates, a decrease of 33% for copper and 28% for gold, respectively, over the same period in 2024.

“The El Roble mine performed below schedule this quarter as the transition to the new areas was delayed by unexpected challenging rock quality conditions. Tonnage and particularly head grade were impacted as access to higher grade stopes was slowed down.” said Fernando E. Ganoza, CEO. “We expect to see progressive improvements in the second and third quarter this year to recover the planned development and preparation rate, which will allow us to make up for most of the lost production.”

First Quarter Operational Highlights

• Production of 2.23 million pounds of copper contained in concentrates; a decrease of 33% over Q1 2024.
• Production of 1,553 ounces of gold contained in concentrates; a decrease of 28% over Q1 2024.
• Average processed tonnes per day of 773, a decrease of 16% over Q1 2024.
• Copper head grade of 1.97%, a decrease of 22% over Q1 2024.
• Gold head grade of 1.40 grams per tonne; a decrease of 15% over Q1 2024.
• Copper and gold recovery of 93.6% and 62.7%; an increase of 2% for copper and no significant change for gold, over Q1 2024.

First Quarter Operational Details

Note: Metal production figures are subject to adjustments based on final settlement. The reported results are preliminary in nature and are awaiting independent lab verification.

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.