Coeur Mining, Inc. reported positive results from its multi-year exploration drilling and development program at the Kensington underground gold mine in Southeast Alaska. In addition, mineralization in the Kensington Main zone has been extended 600 feet along strike since the last press release dated September 12, 2023 and 125 feet (183 meters) down dip since the year-end 2023 reserve and resource calculations. At Lower Kensington, the new Zone 50 has grown significantly along strike and down dip.

Results from Lower Kensington include the following true width intercepts: Hole K23-0220-147-X03 returned 29.6 feet at 0.41 oz/t gold (9.0 meters at 14.0 g/t gold); Hole K23-0220 -091-X12 returned 11.6 feet at 0.70 oz/t gold (3.5 meters at 23.7 g/t gold); HoleK23-0220-091-X27 returned 7.1 feet at 1.10 oz/t gold (2.2 meters at 37.7g/t gold). Coeur?s commitment to organic growth from brownfield exploration has been a key differentiator in the sector, leading to strong reserve and resource growth with multiple new discoveries and meaningful extensions to mine lives throughout the Company?s portfolio of operations. Since the inception of Kensington?s multi-year program in mid-2022, depletion has been replaced for two consecutive years and reserves have been added at the fastest rate in the operation?s history.

The Kensington exploration team continues to conduct systematic geological studies aimed at deepening understanding of the mineralizing system. Drilling at Elmira is showing continuity between Elmira Main Zone and Elmira South (Figure 1). Structuralstudies and assay results indicate the Elmira Main structure splits into two at Elmira South (hanging wall and footwall structures), leading to wider zones of mineable mineralization.

Notable true width intercepts significantly above reserve grade include: · Hole K23-1935-126-X12 returned 2.2 feet at 7.91 oz/t gold (0.7 meters at 271.2 g/t gold) and 13.9 feet at 0.75 oz/t gold (4.2 meters at 25.6 g/t gold), Hole K23-1935-126-X21 returned 17.7 feet at 0.95 oz/t gold (5.4 meters at 32.6 g/t gold), Hole K23-1935-126-X16 returned 0.9 feet at 15.25 oz/t gold (0.3 meters at 522.9 g/t gold), Hole K23-1935-126-X18 returned 14.6 feet at 0.48 oz/t gold (4.5 meters at 16.4 g/t gold), Hole K23-1935-126-X15 returned 17.5 feet at 0.39 oz/t gold (5.4 meters at 13.3 g/t gold), Hole K24-1345-074-X03 returned 16.1 feet at 0.34 oz/t gold (4.9 meters at 11.8 g/t gold), Hole K23-1935-126-X17 returned 15.8 feet at 0.33 oz/t gold (4.8 meters at 11.4 g/t gold), Hole K23-1415-048-X09 returned 1.6 feet at 2.95 oz/t gold (0.5 meters at 101.3g/t gold), Hole K24-1345-074-X02 returned 7.4 feet at 0.26 oz/t gold (2.3 meters at 9.0 g/t gold), Hole K24-1555-054-X02 returned 5.9 feet at 0.74 oz/t gold (1.8 meters at 25.5 g/tgold). In Lower Kensington, the recently outlined Zone 50 is continuing to grow down-dip and along strike with infill and expansion drilling returning excellent results. Infill drilling over a central portion of this zone, measuring approximately 750 feet by 500 feet, has been completed, with expansion drilling completed over a similar area down-dip.

Results from expansion drilling in the lower portion have been highly encouraging, warranting the development of a new exploration drift in order to complete infill at a better drill angle. This work is expected to be completed before year-end 2024 reserve and resource calculations. The linking structures previously referred to in the Company?s Kensington exploration update on September 12, 2023 have formed a new sub-parallel zone called the Lower Sulphide Unit (?LSU?), the extensions of which will also be targeted from the new exploration drift.

Additionally, Lower Kensington Zones 10 and Zone 10 Hanging Wall zones have continued to grow. Highlighted true width results from Lower Kensington include: Hole K23-0220-147-X03 returned 29.6 feet at 0.41 oz/t gold (9.0 meters at 14.0 g/t gold), Hole K23-0220-091-X27 returned 7.1 feet at 1.10 oz/t gold (2.2 meters at 37.7 g/t gold) and 14.5 feet at 0.38 oz/t gold (4.4 meters at 13.0 g/t gold), Hole K23-0220-109-X02 returned 3.3 feet at 1.73 oz/t gold (1.0 meter at 59.3 g/t gold), Hole K23-0220-091-X01 returned 28.2 feet at 0.18 oz/t gold (8.6 meters at 6.2 g/t gold), Hole K24-0220-091-X02 returned 4.0 feet at 1.21 oz/t gold (1.2 meters at 41.4 g/t gold), Hole K23-0220-091-X23 returned 2.9 feet at 1.67 oz/t gold (0.9 meters at 57.3 g/t gold), Hole K24-0220-125-X03 returned 24.2 feet at 0.14 oz/t gold (7.4 meters at 4.9 g/t gold), Hole K24-0220-125-X01 returned 9.3 feet at 0.41 oz/t gold (2.8 meters at 14.0 g/t gold) and 13.8 feet at 0.20 oz/t gold (4.2 meters at 6.9 g/t gold).