Mr. Neil Woodyer reports

ARIS MINING ANNOUNCES HIGH GRADE DRILL RESULTS FROM ONGOING SEGOVIA OPERATIONS EXPLORATION PROGRAM

Aris Mining Corp. has released the results received to date from its continuing 2024 exploration drilling program at its Segovia operations in Colombia, which is now 70 per cent complete.

Neil Woodyer, chief executive officer of Aris Mining, commented: "Our drilling program continues to deliver high-grade intersections, confirming the continuity and extension of the large-scale veins at depth and along strike, and supporting Segovia's status as one of the highest-grade gold operations in the world. The identification of new, near-mine mineral resources are expected to progressively lengthen the currently defined mine life and to provide future low-development-cost mill feed to supplement the processing plant expansion currently under way. We are especially excited by the results of our ongoing data verification and new drilling programs at Cristales, which are expected to result in significant additions to inferred mineral resources and have the potential to connect the Cristales vein with the substantial vein systems at El Silencio."

Exploration program

The intersections provided in this news release include results received since the company's previous exploration news release dated Aug. 16, 2023, which had a data cut-off date of July 31, 2023, up to validated sample assays available as of April 1, 2024. These results are expected to be included in the company's updated mineral resource and reserve estimates expected in the fourth quarter of 2024.

The Segovia vein system is extensive, with three of the four operating mines following relatively flat-lying vein systems ranging between 1.5 and 2.8 kilometres along strike and extending downdip for between 2.0 and 2.7 km. To date, 80 different veins and vein splays have been identified from both surface and underground drilling and underground channel sampling. Most of these large-scale structures remain open along strike and downdip. The majority of the exploration drilling is undertaken from within the existing underground mine development and support infrastructure, targeting vein extensions that require relatively lower expenditures to develop and produce. As the vein splays are located in the footwall and hangingwall of the main veins, most of the drill holes intersect multiple veins, providing a high value per drill metre in terms of identifying new mineral resources, and often result in the discovery of new vein structures.

Vein intersection grades remain high after diluting the vein width to the planned mining widths for extraction using narrow vein mining methods. In addition to exploration drilling, continuing channel samples of the veins at the actively advancing work faces also continue to provide new data to upgrade mineral resources to mineral reserves.

Exploration drilling results

Cristales is a historic operation that is currently being operated by a third party contractor for processing at Segovia's plant. The drilling strategy is to prove the extension of the Cristales vein at depth, which could potentially connect to an existing crosscut at El Silencio, opening up a new mining front. The new drill holes are located approximately 200 metres to the south of the historic Cristales mine workings over an area of approximately 250 m by 200 m, and supplement over 3,700 newly validated historic vein intersections. These vein intersections are expected to result in new high-grade inferred mineral resources. The new drill hole highlights (1) include:

• 0.32 metre at 25.80 grams per tonne gold in hole CR-ES-075;
• 0.47 m at 7.48 g/t Au in hole CR-ES-080;
• 0.31 m at 15.54 g/t Au in hole CR-ES-083;
• 0.25 m at 137.78 g/t Au in hole CR-ES-086.

Elsewhere, near-mine drill holes strategically located approximately 100 m to the east and above existing vein workings at El Silencio over an area of approximately 300 m by 120 m confirm the continuity of high-grade veins and were successful in extending the main vein in this area for another 500 m downdip. These intersections are expected to drive growth of high-grade mineral resources, which are important for operations in the medium term. Drilling in this location was also successful in identifying a new vein in the hangingwall and intersected other new veins with orientations oblique to the main structures. These new veins will be a high priority for definition in its next drilling programs. Highlights include:

• 0.12 m at 45.19 g/t Au in hole ES-MH14;
• 0.23 m at 55.22 g/t Au in hole ES-MH14-01;
• 0.30 m at 61.50 g/t Au in hole ES-MH11-03;
• 0.48 m at 61.82 g/t Au in hole ES-MH12-02;
• 0.39 m at 28.34 g/t Au in hole ES-MH12-04.

Infill and extensional drill holes over a strike of 250 m located to the northwest of El Silencio were also successful in demonstrating continuity of the high-grade veins, and are expected to result in new high-grade mineral resources and reserves, adding new production areas to the operations. Two new veins were discovered in the footwall and hangingwall, and two other new veins related to a different structural trend were also discovered. These new discoveries have been added to the list of high-priority targets for definition in the company's next drilling programs. Highlights include:

• 0.25 m at 15.20 g/t Au in hole ES-IU-182;
• 0.20 m at 65.70 g/t Au in hole ES-IU-183;
• 0.26 m at 715.99 g/t Au and 0.13 m at 93.34 g/t Au in hole ES-IU-191;
• 0.20 m at 56.14 g/t Au in hole ES-IU-195;
• 0.49 m at 118.75 g/t Au in hole ES-IU-202;
• 0.14 m at 99.87 g/t Au in hole ES-IU-208.

(1) All intersection widths are corrected for true vein width.

Surface drilling targeting a particularly rich vein located in shallower areas of the mine near the existing operations over a strike distance of 240 m was successful in confirming continuity of the vein from the surface. New mine development is now under way based on these successful drilling results, and with the support of an updated geological interpretation, are expected to convert to high-grade mineral resources and reserves. Highlights include:

• 0.29 m at 536.75 g/t Au in hole MAN-ES-017A;
• 0.39 m at 178.24 g/t Au in hole MAN-ES-020;
• 0.19 m at 812.16 g/t Au in hole MAN-ES-021.

Underground drill holes were strategically planned at that same high-grade vein target over a strike distance of 200 m to identify new mineral resources adjacent to the current mine infrastructure and to confirm continuity at depth. This drilling was successful and is expected to extend its high-grade mineral resources, in addition to discovering a new vein in the hangingwall and two new veins in the footwall. Highlights include:

• 0.40 m at 137.80 g/t Au in hole ES-EU-141;
• 0.37 m at 15.37 g/t Au in hole ES-EU-145;
• 0.28 m at 13.13 g/t Au in hole ES-EU-154;
• 0.50 m at 26.93 g/t Au in hole ES-EU-158.

Finally, a series of infill holes designed to upgrade and expand existing mineral resources at the Providencia mine was drilled to test the downdip extension of a major high-grade vein, with successful results that are expected to drive the short- and medium-term mine production plans. Highlights include:

• 0.28 m at 29.61 g/t Au in hole MAR-IU-034;
• 0.29 m at 11.10 g/t Au in hole MAR-IU-041;
• 0.16 m at 207.79 g/t Au in hole MAR-IU-052.

Technical disclosure

All samples comprise half diamond drill core, and were prepared and assayed by the commercial laboratory SGS (ISO 9001:2008) located in Medellin, Colombia, utilizing fire assay with atomic absorption finish and with gravimetric finish for assays greater than 10 g/t gold. Aris Mining implements an industry standard quality assurance and quality control program comprised one certified standard and one blank submitted with every 20 samples, and one field, one coarse and one pulp duplicate every 50 samples. There are no known drilling, sampling, recovery or other factors that could materially affect the accuracy or reliability of the samples disclosed in this news release.

The scientific and technical information contained in this news release was approved by Pamela De Mark, PGeo, senior vice-president, geology and exploration, of Aris Mining, who is a qualified person as defined by National Instrument 43-101. Ms. De Mark has reviewed the drilling, sampling and assay protocols, reviewed the diamond drill core, and reviewed the logging, sampling and quality assurance/quality control databases to support the information contained in this news release.

About Aris Mining Corp.

Aris Mining is a gold producer in the Americas, currently operating two mines with expansions under way in Colombia. The Segovia operations and the Marmato Upper mine produced 226,000 ounces of gold in 2023. Aris Mining is targeting a production rate of approximately 500,000 ounces of gold per year in the second half of 2026, following a ramp-up period after the Segovia mill expansion scheduled for completion in first quarter 2025 and the Marmato Lower mine's first gold pour in late 2025. Aris Mining also operates the 51-per-cent-owned Soto Norte joint venture, where feasibility level studies are under way on a new, smaller-scale development plan, with results expected in early 2025. In Guyana, Aris Mining is advancing Toroparu, a gold/copper project. Aris Mining intends to pursue acquisitions and other growth opportunities to unlock value through scale and diversification.

Aris Mining promotes the formalization of traditional miners into contract mining partners as this process enables all miners to operate in a legal, safe and responsible manner that protects them and the environment.

We seek Safe Harbor.