Atico Produces 2.09 Million Pounds of Cu and 2,108 Ounces of Au in First Quarter 2026

VANCOUVER, British Columbia, April 28, 2026 (GLOBE NEWSWIRE) -- Atico Mining Corporation (the “Company” or “Atico”) (TSX.V: ATY | OTCQX: ATCMF) announces its operating results for the three months ended March 31, 2026 from its El Roble mine. Production for the quarter totaled 2.09 million pounds of copper and 2,108 ounces of gold in concentrates, a decrease of 6% for copper and an increase of 36% for gold, respectively, over the same period in 2025.

“The El Roble mine performed slightly below plan during the quarter, even though gold production was above budget. We achieved a competitive operating cost and clear improvements are already visible in the second period as operations are back on track to meet our full-year guidance,” said Fernando E. Ganoza, CEO. “During the quarter, we successfully completed the sale of two concentrate shipments, combined with record metal prices, positions us to deliver robust financial results.”

First Quarter Operational Highlights

• Production of 2.09 million pounds of copper contained in concentrates; a decrease of 6% over Q1 2025.
• Production of 2,108 ounces of gold contained in concentrates; an increase of 36% over Q1 2025.
• Average processed tonnes per day of 734, a decrease of 5% over Q1 2025.
• Copper head grade of 1.86%, a decrease of 6% over Q1 2025.
• Gold head grade of 1.69 grams per tonne; an increase of 20% over Q1 2025.
• Copper and gold recovery of 91.0% and 69.1%; a decrease of 3% for copper and an increase of 10% for gold, over Q1 2025.
  
  

First Quarter Operational Details

	Q1 2026 Total		Q1 2025 Total		% Change
Production(Contained in Concentrates)
Copper (000s pounds)	2,090		2,230		-6	%
Gold (ounces)	2,108		1,553		36	%
Mine
Tonnes of ore mined	56,629		56,467		Nil
Mill
Tonnes processed	56,033		54,978		2	%
Tonnes processed per day	734		773		-5	%
Copper grade (%)	1.86		1.97		-6	%
Gold grade (g/t)	1.69		1.40		20	%
Recoveries
Copper (%)	91.0		93.6		-3	%
Gold (%)	69.1		62.7		10	%
Concentrates
Copper and Gold Concentrates (dmt)	5,223		5,763		-9	%
Payable copper produced (000s lbs)	1,967		2,091		-6	%

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.

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.

	Q1 2026
Amounts in dry metric tonnes
Opening inventory	4,832
Production	5,223
Sales	-8,789
Adjustments	0
Closing inventory	1,266
Number of shipments	2

Note: Concentrate figures are subject to adjustments based on final surveys and final settlement of sales.

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. For more information, please visitwww.aticomining.com.

ON BEHALF OF THE BOARD

Fernando E. Ganoza
CEO
Atico Mining Corporation

Trading symbols: TSX.V: ATY | OTCQX: ATCMF

Investor Relations
Igor Dutina
Tel: +1.604.633.9022

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

No securities regulatory authority has either approved or disapproved of the contents of this news release. The securities being offered have not been, and will not be, registered under the United States Securities Act of 1933, as amended (the ‘‘U.S. Securities Act’’), or any state securities laws, and may not be offered or sold in the United States, or to, or for the account or benefit of, a "U.S. person" (as defined in Regulation S of the U.S. Securities Act) unless pursuant to an exemption therefrom. This press release is for information purposes only and does not constitute an offer to sell or a solicitation of an offer to buy any securities of the Company in any jurisdiction.

Cautionary Note Regarding Forward Looking Statements

This announcement includes certain “forward-looking statements” within the meaning of Canadian securities legislation. All statements, other than statements of historical fact, included herein, without limitation the use of net proceeds, are forward-looking statements. Forward-looking statements involve various risks and uncertainties and are based on certain factors and assumptions. There can be no assurance that such statements will prove to be accurate, and actual results and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from the Company’s expectations include uncertainties relating to interpretation of drill results and the geology, continuity and grade of mineral deposits; uncertainty of estimates of capital and operating costs; the need to obtain additional financing to maintain its interest in and/or explore and develop the Company’s mineral projects; uncertainty of meeting anticipated program milestones for the Company’s mineral projects; and other risks and uncertainties disclosed under the heading “Risk Factors” in the AIF of the Company dated September 4, 2024 filed with the Canadian securities regulatory authorities on the SEDAR+ website at www.sedarplus.com