Collective Mining Reports High Grade Drill Results Along Apollo System’s Ramp Zone

Figure 2: Plan View of the Apollo System Highlighting Drill Holes Announced in this Release (CNW Group/Collective Mining Ltd.)

On December 3, 2025, Collective Mining Ltd. (NYSE: CNL, TSX: CNL) announced assay results from three orthogonal diamond drill holes designed to continue expanding the high-grade Ramp Zone (“Ramp”), a component of the company’s flagship Apollo system within the Guayabales Project in Caldas, Colombia.

The results confirm broad and continuous intervals of reduced intrusion-related gold mineralization, extending the Ramp Zone to 300 meters of strike by 270 meters vertical. The company stated that the zone remains open in all directions.

The Ramp Zone, situated at approximately 1,000 meters above sea level at the bottom of the Apollo system, is part of a large, partially Reduced Intrusion Related System (RIRS) mineralized with gold, silver, copper, and tungsten. Drilling at Apollo has outlined continuous mineralization from the surface to more than 1,370 vertical meters.

Drill Hole Results Detail

Figure 3: Apollo System: High-Grade Over 1,370 Metres from Surface (CNW Group/Collective Mining Ltd.)

The deepest and northeastern-most hole reported to date, APC143-D1, intercepted 23.35 meters grading 8.24 g/t gold and 8 g/t silver. This intercept was contained within a broader interval of 76.10 meters grading 3.26 g/t gold and 4 g/t silver, starting from 409.60 meters downhole. This result expanded the Ramp Zone’s dimensions from the previously stated 275 meters of strike by 200 meters vertical.

A second hole, APC140-D2, locally extended the Ramp Zone by 50 meters to the northwest. This hole cut 16.40 meters grading 8.44 g/t gold and 19 g/t silver within a 55.10-meter interval grading 3.06 g/t gold and 7 g/t silver, beginning at 243.10 meters downhole.

A related wedge hole, APC140-D1, intersected two mineralized segments: 47.70 meters grading 1.98 g/t gold and 5 g/t silver from 527.40 meters downhole, including 15.15 meters grading 3.00 g/t gold and 8 g/t silver; and 14.15 meters grading 2.13 g/t gold and 4 g/t silver from 598.55 meters downhole.

Operational and Financial Status

Figure 4: Cross Section Outlining the Ramp Zone Extension to the Northwest (CNW Group/Collective Mining Ltd.)

The company has contracted a third deep-capacity diamond rig to operate at the Ramp Zone, with two additional deep-capacity rigs scheduled to arrive in mid-Q1 2026. Two additional drill holes into the Ramp Zone (APC143-D2 and APC143-D3) are pending assay results; these holes were reported to have intersected 18 sightings of visible gold, compared to none observed in the results detailed in this announcement.

To date, Collective Mining has completed 150,000 meters of diamond drilling across the Guayabales and San Antonio projects, with 105,000 meters dedicated to the Apollo system. Ten rigs are currently operating on site.

The company stated that it is fully funded for its aggressive 2026 program, which targets up to 100,000 meters of additional drilling, based on a cash position of $135 million USD as of December 1, 2025.

Figure 5: Side-by-Side Comparison of the Apollo System and the Neighboring Marmato Mine, Highlighting How the Ramp Zone and Marmato Deeps Systems Begin at the Same Elevation and the Potential for the Ramp Zone to Continue Expanding Along Strike and to Depth (CNW Group/Collective Mining Ltd.)

Executive Chairman Ari Sussman commented on the results, noting that hole APC143-D1 extended the zone along strike and at depth and demonstrated consistent mineralization over substantial widths.

The continued presence of Ramp Zone mineralization at least 270 meters beneath the initial discovery at 1,000 meters above sea level supports the view that the drilling may have only tested the top of a large intrusion-related gold system that shares mineralogical similarities with the multi-million ounce Marmato Deeps Zone.

Collective Mining was established by the team that developed and sold Continental Gold Inc. to Zijin Mining Group Co., Ltd. (SSE: 601899, HKEX: 2899)

Figure 6: Plan View of the Guayabales Project Highlighting the Apollo System (CNW Group/Collective Mining Ltd.)

Headline image – Figure 1: Cross Section Outlining the Ramp Zone Extension to the North (CNW Group/Collective Mining Ltd.)