Exhibit 99.1

Aris Mining Reports Q1 2025 RESULTS WITH RECORD ADJUSTED EARNINGS PER SHARE, OPERATIONAL STRENGTH, AND PROGRESS ON GROWTH PROJECTS

Vancouver, Canada, May 7, 2025 - Aris Mining Corporation (Aris Mining or the Company) (TSX: ARIS; NYSE-A: ARMN) announces its financial and operating results for the three months ended March 31, 2025 (Q1 2025), with a strong start to the year marked by record gold prices, solid production performance, and continued investments in growth. Adjusted earnings per share (EPS) of $0.16 is the highest full quarter result since Aris Mining was formed in September 2022. All amounts are expressed in U.S. dollars unless otherwise indicated.

Neil Woodyer, CEO, commented “Aris Mining had a strong start to 2025, driven by solid operational execution, higher gold prices, and continued progress on our growth initiatives. At Segovia, we maintained production and high margins while advancing the plant expansion, which remains on track for commissioning in June. At Marmato, we are making steady progress on the Lower Mine development, with construction spend ramping up and plant capacity now targeting 5,000 tonnes per day. At our Toroparu Project in Guyana, we have launched a new study to update the development plan, and we look forward to demonstrating the potential of this project.”

Q1 2025 Financial Performance

Q1 2025 Operational Performance

Growth and Expansion Updates

Capital Structure Update

During Q1 2025 and through early May, Aris Mining continued to see strong participation in the exercise of its in-the-money TSX-listed ARIS.WT.A warrants, which expire on July 29, 2025. Year-to-date, the Company has received over $19.4M in proceeds from these warrant exercises, further strengthening the balance sheet and supporting growth initiatives at Segovia and Marmato.

As of May 6, 2025, Aris Mining has approximately 178.1 million common shares issued and outstanding, with 48.0 million ARIS.WT.A warrants remaining outstanding, which if fully exercised would result in the issuance of 24.0 million new Aris Mining shares and additional proceeds to the Company of C$132 million (or $96 million).

Following the expiry of the ARIS.WT.A warrants on July 29, 2025, the Company will have no remaining convertible securities outstanding, other than stock options issued under its stock option plan.

Since issuing its new $450 million senior unsecured bonds in October 2024, Aris Mining has steadily reduced both its total and net leverage ratios. As of March 31,2025, total leverage was 2.4x³ and net leverage was 1.2x³.

Figure 3: Total and Net Leverage Ratios⁴

Endnotes

¹ _{All references to adjusted earnings, EBITDA, adjusted EBITDA, adjusted (net) earnings, growth and expansion expenditures, cash flow after sustaining capital and income tax, cash costs and AISC are non-GAAP financial measures in this document. These measures do not have any standardized meaning prescribed under GAAP, and therefore may not be comparable to other issuers. Refer to the Non-GAAP Measures section in this document for a reconciliation of these measures to the most directly comparable financial measure disclosed in the Company’s financial statements.}

² _{Net earnings represents net earnings attributable to owners of the company, as presented in the annual and interim financial statements for the relevant period.}

³ _{Net debt is calculated as outstanding principal for the Senior Notes and the Gold-linked Notes, less cash.}

⁴ _{Total and Net Leverage ratios are calculated by dividing total debt and net debt, respectively, by Adjusted EBITDA on a trailing 12-month basis.}

Q1 2025 Conference Call Details

Management will host a conference call on Thursday, May 8, 2025, at 9:00 a.m. ET / 6:00 a.m. PT / 2:00 p.m. BST / 3:00 p.m. CEST to discuss the results.

Participants may gain expedited access to the conference call by registering at Diamond Pass Registration (dpregister.com). Once registered, call in details will be displayed on screen which can be used to bypass the operator and avoid the call queue. Registration will remain open until the end of the live conference call.

Webcast

Conference Call

Audio Recording

A replay of the event will be archived at Events & Presentations - Aris Mining Corporation.

Aris Mining's Condensed Consolidated Interim Financial Statements for the three months ended March 31, 2025 and 2024 and related MD&A are available on SEDAR+, in the Company’s filings with the U.S. Securities and Exchange Commission (the SEC) and in the Financials section of Aris Mining's website here. Hard copies of the financial statements are available free of charge upon written request to info@aris-mining.com.

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 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 Upper Mine, 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 ramp-up of the Segovia mill expansion, expected during the second half of 2025, and the new Marmato Mine, which is expected to start ramping up in H2 2026. In addition, Aris Mining operates the 51% owned Soto Norte joint venture, where studies are underway on a new, smaller scale development plan, with results expected by mid-2025. In Guyana, Aris Mining owns the Toroparu gold/copper project, where a new Preliminary Economic Assessment (PEA) has been commissioned.

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.

Aris Mining intends to pursue acquisitions and other growth opportunities to unlock value through scale and diversification.

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

Aris Mining Contact

Cautionary Language

Non-GAAP Measures

EBITDA, adjusted EBITDA, adjusted (net) earnings, cash cost, total leverage, net leverage and AISC are non-GAAP financial measures and non-GAAP ratios. These financial measures do not have any standardized meaning prescribed under IFRS or by Generally Accepted Accounting Principles (GAAP) in the United States, and therefore may not be comparable to other issuers. For full details on these measures and ratios refer to the “Non-GAAP Financial Measures” sections of the Company’s Management’s Discussion and Analysis for the three months ended March 31, 2025 and 2024 and years ended December 31, 2024 and 2023 (MD&As). The MD&As are incorporated by reference into this news release and are available at www.aris-mining.com, on the Company’s profile on SEDAR+ at www.sedarplus.ca and in its filings with the SEC at www.sec.gov.

We have presented total leverage and net leverage as non-GAAP ratios in this press release. Total leverage is calculated as the outstanding principal of the Company’s debt instruments divided by trailing twelve-month adjusted EBITDA, and net leverage is calculated as net debt divided by trailing twelve-month adjusted EBITDA. We believe these ratios provide useful information to analysts, investors, and other stakeholders in assessing the Company’s leverage and evaluating our balance sheet.

The tables below reconcile the non-GAAP financial measures contained in this news release for the current and comparative periods to the most directly comparable financial measure disclosed in the Company's interim financial statements for the three months ended March 31, 2025 and 2024, and Company’s annual financial statements for the three months and years ended December 31, 2024 and 2023.

Quarterly cash-flow summary

Cash costs per ounce

Reconciliation of total cash costs by business unit at Segovia and Marmato to the cash costs as disclosed above.

Cash costs per ounce - Business Units (Segovia)

1 As presented in the Annual and Interim Financial Statements and notes thereto for the respective periods.

All-in sustaining costs (AISC)

Reconciliation of total AISC by business unit at Segovia and Marmato to the AISC as disclosed above.

1 As presented in the Annual and Interim Financial Statements and notes thereto for the respective periods.

All-in sustaining costs (AISC) - Segovia by Business Unit

1 As presented in the Annual and Interim Financial Statements and notes thereto for the respective periods.

Additions to mineral interests, plant and equipment

Earnings before interest, taxes, depreciation, and amortization (EBITDA) and adjusted EBITDA

Earnings before interest, taxes, depreciation, and amortization (EBITDA) and adjusted EBITDA

Adjusted net earnings and adjusted net earnings per share

Adjusted net earnings and adjusted net earnings per share

Qualified Person and Technical Information

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 the Company’s ability to deliver on its 2025 objectives, the completion timeline and expected benefit from the Sevogia expansion, the completion timeline and expected benefit from the Marmato Lower Mine construction, the expected completion date of the new pre-feasibility study for the Soto Norte Project, the completion date of the new preliminary economic assessment for the Toroparu Project, benefits to the Company from the exercise of its outstanding warrants and statements included in the “About Aris Mining” section of this news release relating to the Segovia Operations, Marmato Mine, 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 in the Company’s filings 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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