Infrastructure Progress Advances Marmato 2026 Gold Production Goals

Aris Mining (TSX: ARIS; NYSE: ARIS) confirmed the completion of an underground infrastructure connection at its Marmato gold mine in Colombia. The development involved connecting a new surface decline to the existing underground mining workings.

This cross-cut connection serves as a technical step for the ongoing expansion project, which includes the construction of a 5,000 tons-per-day carbon-in-pulp (CIP) plant. The company stated that the infrastructure is currently on schedule to support the initiation of gold production in the fourth quarter of 2026.

Neil Woodyer, Chair and CEO of Aris Mining, stated: “The on-schedule connection of the new surface decline to the existing underground development is a major milestone for Marmato and an important step in delivering our expansion plans.”

The Marmato expansion is part of a broader strategy intended to increase the company’s annual gold production. Aris Mining aims to achieve a combined output of approximately 500,000 ounces per year from its Segovia and Marmato operations. The Segovia mine previously expanded its operational capacity following the installation of a second mill in June 2025.

The company maintains a long-term production objective of approximately 1 million ounces of gold annually. This target incorporates potential production from the Toroparu gold project in Guyana, where a prefeasibility study is currently underway. Aris Mining expects a construction decision regarding the Toroparu project in early 2027.

Regarding its portfolio in Colombia, the company is finalizing environmental studies for the Soto Norte gold project. Aris Mining plans to submit these documents for the licensing process during the second quarter of 2026.

Photo (© Loren Moss) illustrative only (Not marmato mine)

Aris Mining Corporation (TSX: ARIS; NYSE: ARIS) has released its financial and operating results for the fourth quarter and full year ending December 31, 2025. The company reported 2025 gold production of 256,503 ounces, a 22% increase from the 210,955 ounces produced in 2024. This output exceeded the midpoint of the company’s annual guidance of 230,000 to 275,000 ounces.

Annual gold revenue reached $909 million USD, representing an 82% increase over the previous year. Adjusted EBITDA rose to $464 million USD, up 185% from 2024, while adjusted net earnings were reported at $241 million USD, or $1.28 USD per share. As of year-end 2025, the company’s cash balance stood at $392 million USD, with net debt reduced to $86 million USD from $241 million USD at the end of 2024.

The Marmato Mine produced 28,741 ounces of gold, a 23% increase over the 2024 production level.

Operational Performance at Segovia and Marmato

Operations at the Segovia Operations in Colombia produced 227,762 ounces of gold in 2025, a 21% increase from 2024. This performance was supported by average gold grades of 9.82 g/t and a 17% increase in tonnes milled, following the installation of a second ball mill in June 2025. All-in sustaining costs (AISC) for owner-operated mining at Segovia were $1,534 USD per ounce, while AISC for Contract Mining Partners (CMPs) was $1,973 USD per ounce, reflecting a purchase formula linked to rising gold prices.

The Marmato Mine produced 28,741 ounces of gold, a 23% increase over the 2024 production level. The result exceeded the 2025 guidance range of 20,000 to 25,000 ounces. The company is currently advancing construction of a new carbon-in-pulp (CIP) processing facility at Marmato, with first gold production expected in the fourth quarter of 2026.

2026 Outlook and Project Development

Aris Mining has set its 2026 consolidated gold production guidance between 300,000 and 350,000 ounces. Production is expected to be weighted toward the second half of the year as the Marmato CIP plant begins operations. At Segovia, production is forecast to increase to between 265,000 and 300,000 ounces.

The company also provided updates on its development portfolio:

• Soto Norte Project (Colombia): Aris Mining completed a Prefeasibility Study (PFS) in September 2025. The company intends to submit an environmental license application to the Autoridad Nacional de Licencias Ambientales (ANLA) in the second quarter of 2026.
• Toroparu Project (Guyana): A Preliminary Economic Assessment (PEA) was completed in October 2025, and a PFS is currently underway with a targeted completion in 2026. A construction decision is anticipated in early 2027.

In the fourth quarter of 2025, Aris Mining used $60 million USD in cash for the acquisition of the remaining 49% interest in the Soto Norte project. Subsequent to the year-end, the company received a $40 million USD installment deposit under its precious metals stream financing after reaching a 50% construction milestone at Marmato.

Aris Mining’s operations are subject to oversight by the Agencia Nacional de Minería (ANM) in Colombia and the Guyana Geology and Mines Commission (GGMC) in Guyana.