ARIS MINING REPORTS SAFE RECOVERY OF ALL WORKERS AT SEGOVIA PARTNER MINE

Rhea-AI Summary

Aris Mining (NYSE-A: ARMN) has successfully rescued all 23 workers, including five Aris Mining employees, who were underground during a shaft collapse at the La Reliquia Mine, a partner mine to the Segovia Operations. The Company's Brigade of Prevention and Emergency Control led the rescue operation, which concluded without any injuries.

CEO Neil Woodyer praised the rescue team and La Reliquia's workforce for their professional response. The incident occurred during a routine monthly review of operations and has not impacted regular operations at Segovia, where La Reliquia contributes a small portion of mill feed since their partnership began in 2014.

Positive

• All 23 workers were rescued safely with no injuries
• Company's emergency response team demonstrated effective crisis management
• Regular operations at Segovia remain unaffected

Negative

• Safety incident at partner mine La Reliquia indicates potential operational risks
• Temporary disruption of operations at La Reliquia Mine

VANCOUVER, BC, Sept. 24, 2025 /PRNewswire/ - Aris Mining Corporation (Aris Mining or the Company) (TSX: ARIS) (NYSE-A: ARMN) reports that all 23 workers who were underground at the time of the La Reliquia Mine shaft collapse have been safely brought to surface. This group included five Aris Mining employees conducting a routine monthly review of La Reliquia's operations.

Aris Mining's Brigade of Prevention and Emergency Control responded immediately, leading the operation to a safe and injury-free conclusion.

Neil Woodyer, CEO, commented "We are relieved and grateful that all workers are now safely at surface. I commend our rescue team and La Reliquia's workforce for their professionalism, dedication, and swift response. We also thank the families and local community for their patience and trust during this difficult time."

The La Reliquia Mine has been a partner to the Segovia Operations since 2014 and contributes a small portion of mill feed to Segovia's overall production. The incident did not impact regular operations at Segovia.

About Aris Mining

Founded in September 2022, Aris Mining was established with a vision to build a leading Latin 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, following the commissioning of the 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, expected to start ramping up production in H2 2026. In addition, Aris Mining operates the 51% owned Soto Norte joint venture, where a PFS study is complete on a new, smaller scale development plan which confirms Soto Norte as a high-quality, long-life project with robust economics and industry-leading environmental and social design features. In Guyana, Aris Mining owns the Toroparu gold/copper project, where a new Preliminary Economic Assessment (PEA) is underway.

Colombia is rich in high-grade gold deposits and Aris Mining is actively pursuing partnerships with the Country's dynamic small-scale mining sector. With these partnerships, we enable safe, legal, and environmentally responsible operations that benefit both local communities and the industry.

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

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 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 happened at Aris Mining's (ARMN) La Reliquia Mine in September 2025?

A shaft collapse occurred at La Reliquia Mine, but all 23 workers, including 5 Aris Mining employees, were safely rescued without injuries.

How did the La Reliquia Mine incident affect Aris Mining's (ARMN) Segovia Operations?

The incident did not impact regular operations at Segovia, where La Reliquia contributes only a small portion of mill feed.

How many Aris Mining employees were involved in the La Reliquia Mine incident?

Five Aris Mining employees were among the 23 workers underground during the incident, conducting a routine monthly review of operations.

What was Aris Mining's (ARMN) response to the La Reliquia Mine incident?

Aris Mining's Brigade of Prevention and Emergency Control responded immediately, leading a successful rescue operation that brought all workers safely to the surface.