ARIS MINING CLOSES ACQUISITION OF REMAINING 49% OF SOTO NORTE

Rhea-AI Summary

Aris Mining (NYSE-A: ARMN) completed the acquisition of the remaining 49% interest in the Soto Norte joint venture from MDC Industry Holding Company LLC (Mubadala) on Dec. 12, 2025.

Aris now owns 100% of the Soto Norte Project and the precious metals stream previously granted to Mubadala has been terminated. Management highlights combined ownership of Segovia, Marmato, Toroparu, and Soto Norte and says the company is targeting growth through expansions, exploration, and project development with a path to join the group of gold companies producing over one million ounces annually.

Positive

• Ownership consolidated: acquired remaining 49% to hold 100% of Soto Norte
• Stream terminated: precious metals stream to Mubadala ended
• Portfolio scale: unified ownership of Segovia, Marmato, Toroparu, and Soto Norte
• Growth strategy: company states clear path toward >1 million ounces annual production

Negative

• None.

Key Figures

Remaining stake acquired 49% Interest in Soto Norte joint venture purchased from Mubadala

Soto Norte ownership 100% Post-transaction ownership of the Soto Norte Project

Company formation year 2022 Year Aris Mining was formed, per management commentary

Large gold producers Fewer than 15 Gold companies producing over one million ounces annually worldwide

Market Reality Check

$15.28 Last Close

Volume Volume 1,882,582 is 1.24x the 20-day average of 1,512,912, indicating elevated interest pre-announcement. normal

Technical Shares trade above the 200-day MA of 7.77, reflecting a sustained uptrend ahead of this acquisition close.

Peers on Argus 1 Up

Gold peers like CGAU, SA, DRD, CNL, and ODV were all up between 3.06% and 8.33%, while momentum scanner flagged IAUX up 4.35%, suggesting broader gold strength alongside company-specific news.

Historical Context

Date	Event	Sentiment	Move	Catalyst
Nov 20	Soto Norte acquisition	Positive	-3.9%	Binding term sheet to acquire remaining 49% of Soto Norte from Mubadala.
Nov 19	Legal settlement	Positive	+1.0%	Settlement with Colombia ending ICSID arbitration with no cash payment agreed.
Oct 30	Board appointment	Positive	+8.1%	Appointment of environmental leader Brigitte Baptiste to board, supporting ESG focus.
Oct 29	Q3 2025 earnings	Positive	+1.6%	Record Q3 2025 revenue and EBITDA with higher production and stronger balance sheet.
Oct 28	Toroparu PEA	Positive	+1.1%	Positive PEA for 100%-owned Toroparu project with long mine life and solid economics.

Pattern Detected

Most recent news (earnings, PEA, governance, Colombia settlement) saw positive price alignment, while the initial Soto Norte acquisition announcement was a notable divergence.

Recent Company History

Over recent months, Aris Mining reported strong Q3 2025 financials with record revenue and project milestones, released a positive PEA for the 100%-owned Toroparu project, and strengthened governance with a new board appointment on Oct 30, 2025. A Colombia settlement on Nov 19, 2025 ended ICSID arbitration without cash payments. The Nov 20, 2025 Soto Norte acquisition term sheet expanded reserves and resources, and today’s closing formalizes that earlier strategic move.

Market Pulse Summary

This announcement confirms Aris Mining’s acquisition of the remaining 49% of the Soto Norte joint venture, giving the company 100% ownership and terminating the associated precious metals stream. It follows the November 2025 binding term sheet and builds on recent positive earnings, project studies, and legal settlements. Investors may watch how integration, project development, and cash flow from Segovia, Marmato, and Toroparu support funding and execution of Soto Norte.

Key Terms

joint venture financial

"acquisition of the remaining 49% interest in the Soto Norte joint venture in Colombia"

A joint venture is when two or more companies team up to work on a specific project or business idea, sharing both the risks and the rewards. It’s like friends starting a lemonade stand together—each contributes resources and they split the profits, making it easier to succeed than going alone.

precious metals stream financial

"the associated precious metals stream previously granted to Mubadala has been terminated"

A precious metals stream is an agreement where an investor provides upfront cash to a mining operator in exchange for the right to buy a portion of future production of metals (like gold or silver) at a set, typically discounted price. For investors, it works like a prepaid buy-in that offers direct exposure to metal prices and potential steady supply without owning the mine, but it also carries risks tied to the mine’s output and operating performance.

AI-generated analysis. Not financial advice.

VANCOUVER, BC, Dec. 12, 2025 /PRNewswire/ - Aris Mining Corporation (Aris Mining or the Company) (TSX: ARIS) (NYSE-A: ARMN) announces the completion of its previously announced acquisition of the remaining 49% interest in the Soto Norte joint venture in Colombia from MDC Industry Holding Company LLC (Mubadala). Aris Mining now owns 100% of the Soto Norte Project, and the associated precious metals stream previously granted to Mubadala has been terminated.

Neil Woodyer, CEO of Aris Mining, commented: "With 100% ownership of Segovia, Marmato, Toroparu, and now Soto Norte, Aris Mining is focused on building a large, diversified gold business across Colombia and Guyana. Our strategy combines strong cash flow generation from our operating mines with growth from expansions, exploration, and project development.

Since our formation in 2022, we have progressed from a 'buy-and-build' strategy to focusing on building the high-quality assets we now own. Fewer than 15 gold companies worldwide produce more than one million ounces annually — and with our current asset base and growth projects, Aris Mining has a clear path to join that group¹."

About Aris Mining

Founded in September 2022, Aris Mining was established with a vision to build a leading South America-focused gold mining company. Our strategy blends current production and cashflow generation with transformational growth driven by expansions of our operating assets, exploration, and development projects. Aris Mining intends to unlock value through scale and diversification. The Company is listed on the TSX (ARIS) and the NYSE-A (ARMN) and is led by an experienced team with a track record of value creation, operational excellence, financial discipline and good corporate governance in the gold mining industry.

Aris Mining operates two underground gold mines in Colombia: the Segovia Operations and the Marmato Complex, which together produced 210,955 ounces of gold in 2024. With expansions underway, Aris Mining is targeting an annual production rate of more than 500,000 ounces of gold, driven by the commissioning of a second mill at Segovia, completed in June and ramping up during H2 2025, and the construction of the Bulk Mining Zone at the Marmato Complex, with first gold expected in H2 2026.

In Guyana, Aris Mining owns the Toroparu gold project, where a new Preliminary Economic Assessment has been completed and a Prefeasibility Study is in progress. Following completion of the PFS, Toroparu will be positioned to advance toward construction.

Aris Mining also owns the Soto Norte gold project, where a Prefeasibility Study has been completed on a smaller-scale development plan confirming Soto Norte as a high-grade, long-life project with strong economics and industry-leading environmental and social design features. Environmental studies are being finalized, which are scheduled to be submitted in the first half of 2026 to initiate the licensing process.

Additional information on Aris Mining can be found at www.aris-mining.com, www.sedarplus.ca, and on www.sec.gov.

________________________________

1 Includes potential production estimates from Toroparu, which is based on a preliminary economic assessment and is preliminary in nature. It includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the preliminary economic assessment will be realized. Mineral resources that are not mineral reserves do not have demonstrated economic viability. There can be no assurance that the projected production will be achieved. Such production also remains subject to obtaining all necessary permits for both Soto Norte and Toroparu.

Cautionary Language 

Forward-Looking Information

This news release contains "forward-looking information" or forward-looking statements" within the meaning of Canadian securities legislation. All statements included herein, other than statements of historical fact, including, without limitation, statements regarding future gold production, Aris Mining's business strategy and statements included in the "About Aris Mining" section of this news release relating to the Segovia Operations, Marmato Complex, Soto Norte Project and Toroparu Project are forward-looking. Generally, the forward-looking information and forward looking statements can be identified by the use of forward looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", "will continue" or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". The material factors or assumptions used to develop forward looking information or statements are disclosed throughout this news release.

Forward looking information and forward looking statements, while based on management's best estimates and assumptions, are subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of Aris Mining to be materially different from those expressed or implied by such forward-looking information or forward looking statements, including but not limited to those factors discussed in the section entitled "Risk Factors" in Aris Mining's annual information form dated March 12, 2025 which is available on SEDAR+ at www.sedarplus.ca and included as part of the Company's Annual report on Form 40-F, filed with the SEC at www.sec.gov.

Although Aris Mining has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information and forward-looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such information or statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information or statements. The Company has and continues to disclose in its Management's Discussion and Analysis and other publicly filed documents, changes to material factors or assumptions underlying the forward-looking information and forward-looking statements and to the validity of the information, in the period the changes occur. The forward-looking statements and forward-looking information are made as of the date hereof and Aris Mining disclaims any obligation to update any such factors or to publicly announce the result of any revisions to any of the forward-looking statements or forward-looking information contained herein to reflect future results. Accordingly, readers should not place undue reliance on forward-looking statements and information.

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SOURCE Aris Mining Corporation

FAQ

What did Aris Mining (ARMN) announce on December 12, 2025 about Soto Norte?

Aris announced completion of the purchase of the remaining 49% interest, bringing Soto Norte to 100% ownership.

How does the Soto Norte acquisition affect Aris Mining's asset base (ARMN)?

The acquisition consolidates ownership of four major assets—Segovia, Marmato, Toroparu, and Soto Norte—under Aris Mining.

Was there a change to any metal stream agreement after Aris bought the remaining Soto Norte interest?

Yes, the company terminated the precious metals stream that had been granted to Mubadala.

Does the Soto Norte deal change Aris Mining's production ambitions (ARMN)?

Management says the enlarged, unified asset base provides a clear path toward joining companies that produce over one million ounces annually.

When did Aris Mining form the current corporate group referenced in the announcement?

The company notes it has progressed from formation in 2022 to a consolidated asset strategy.