Aris Mining hits key Marmato underground milestone
Aris Mining Corporation reports a key construction milestone at its Marmato gold mine, where a new underground cross-cut now connects the surface decline to existing underground workings.
Rhea-AI Filing Summary
Aris Mining Corporation reports a key construction milestone at its Marmato gold mine, where a new underground cross-cut now connects the surface decline to existing underground workings. This establishes continuous access from surface to the area where a new 5,000 tonne-per-day CIP processing plant is being built.
The breakthrough keeps the Marmato bulk mine expansion on schedule for first gold in Q4 2026. Together with the Segovia mine, Aris Mining aims to increase annual gold output to approximately 500,000 ounces, up from about 257,000 ounces produced in 2025, and is advancing longer-term growth projects at Soto Norte and Toroparu.
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Key Figures
Key Terms
CIP plant technical
bulk mine technical
Prefeasibility Study financial
preliminary economic assessment financial
Qualified Person regulatory
forward-looking information regulatory
FAQ
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What milestone at Marmato did Aris Mining (ARIS) announce?
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How much gold did Aris Mining (ARIS) produce in 2025?
What is Aris Mining’s (ARIS) targeted annual gold production after expansions?
What longer-term production objective does Aris Mining (ARIS) mention?
What are the next key project steps for Aris Mining’s Soto Norte and Toroparu projects?
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UNITED
STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT
OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
For the month of April 2026
Commission File Number: 001-41794
Aris
Mining Corporation
(Translation of registrant's name into English)
Suite 2400 - 1021 West Hastings St., Vancouver, BC, Canada V6E 0C3
(Address of principal executive offices)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F ☐ Form 40-F ☒
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
| ARIS MINING CORPORATION | ||
| Date: April 17, 2026 | By: | (s) Ashley Baker |
| Ashley Baker | ||
| Chief Legal Officer | ||
| EXHIBIT INDEX | ||
| Exhibit Number | Description | |
| 99.1 | Press Release dated April 17, 2026 |
Exhibit 99.1
 |
NEWS RELEASE TSX & NYSE: ARIS aris-mining.com |
ARIS MINING ANNOUNCES
BREAKTHROUGH MILESTONE AT
MARMATO UNDERGROUND DEVELOPMENT
Vancouver, Canada, April 17, 2026 – Aris Mining Corporation (Aris Mining or the Company) (TSX: ARIS; NYSE: ARIS) announces a significant construction milestone at its Marmato gold mine with the underground development cross-cut now connecting the new surface decline to the existing underground development.
This breakthrough marks an important step in the Marmato expansion project, establishing continuous underground access from surface, where the new 5,000 tonne per day CIP plant is under construction, to the existing workings. The connection supports the next phases of mine development, infrastructure installation and operational readiness for the Marmato bulk mine which is on schedule for first gold in Q4 2026.
Neil Woodyer, Chair and CEO, commented: “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. As development continues to advance, Marmato, together with Segovia, remains on track to deliver approximately 500,000 ounces of gold production per year following expansion and ramp-up.”
Marmato is one of Aris Mining’s key growth projects and is expected to become a larger-scale, modern underground mining operation. This cross-cut breakthrough reflects continued progress in developing the access and infrastructure required to support expanded operations.
Aris Mining will continue to provide updates on construction and development progress at Marmato as additional milestones are achieved.
About Aris Mining
Aris Mining is a Canadian gold mining company focused on South America. The Company operates the Segovia and Marmato underground gold mines in Colombia, which together produced approximately 257,000 ounces of gold in 2025. Aris Mining is listed on the Toronto Stock Exchange and the New York Stock Exchange under the symbol ARIS.
The Company is advancing expansion projects at Segovia and Marmato that are expected to increase annual gold production to approximately 500,000 ounces, driven by the ramp-up at Segovia following the installation of the second mill, which was completed in June 2025, and construction of the new Marmato bulk mine and CIP plant, with first gold expected in Q4 2026.
Aris Mining’s portfolio supports a longer-term objective of approximately 1 million ounces of annual gold production1. Key projects include the high-grade Soto Norte gold project in Colombia, where environmental studies are being finalized for submission in Q2 2026 to initiate the licensing process, and the Toroparu gold project in Guyana, where a Prefeasibility Study is in progress and a construction decision is expected in early 2027.
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.
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|
NEWS RELEASE TSX & NYSE: ARIS aris-mining.com |
Aris Mining Contact
| Oliver Dachsel | Lillian Chow |
| Senior Vice President, Capital Markets | Director, Investor Relations & Communications |
| +1.917.847.0063 | info@aris-mining.com |
Cautionary Language
Qualified Person
Pamela De Mark, P.Geo., Senior Vice President Geology and Exploration of Aris Mining, is a Qualified Person as defined by National Instrument 43-101 (NI 43-101), and has reviewed and approved the technical information contained in this news release.
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 relating to timing for completion and first gold pour at the Marmato Bulk Mining Zone, the expected benefit from the Segovia expansion, the timeline for environmental studies for the Soto Norte Project, the timeline for a Prefeasibility Study and construction decision for the Toroparu Project, the objective of reaching one 1 million ounces of production and potential production, 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 11, 2026 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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