Coeur Mining — Aug 5, 2026 release

The footprint of the K-Zone has been extended by more than 300 meters since the acquisition, while scout drilling has intersected porphyry-style mineralization Guidance • The Company has revised New Afton’s 2026 production and cost guidance ranges to reflect a slightly slower assumed ramp-up of C-Zone mining rates • Prorated production reflecting nine months of contributions is expected to be 50,000 - 60,000 ounces of gold (previously 60,000 - 80,000 ounces), 40 - 50 million pounds of copper (previously 50 - 65 million pounds), and 100,000 - 180,000 ounces of silver (previously 130,000 - 180,000 ounces) • Prorated adjusted CAS 1 reflecting nine months of results are expected to be $1,300 - $1,600 per gold ounce (previously $1,000 - $1,200 per ounce) and $2.00 - $2.30 per pound of copper (previously $1.20 - $1.35 per pound), which reflects lower expected production levels and includes $175 per ounce of gold and $0.24 per pound of copper of non-cash impacts relating to the purchase price allocation ascribed to short-term inventory • Prorated capital expenditures reflecting nine months of ownership are expected to be $51 - $61 million, which are unchanged from the previous guidance range • Prorated exploration investment reflecting nine months of activity is expected to be $19 - $23 million ($17 - $19 million expensed and $2 - $4 million capitalized), which is unchanged from the previous guidance range 6 Rainy River, Canada (Dollars in millions, except per ounce amounts) 2Q 2026 1Q 2026 4 4Q 2025 3Q 2025 2Q 2025 Tonnes milled 2,396,866 225,632 — — — Average gold grade (grams/tonne) 0.90 0.87 — — — Average recovery rate – Au 92.5  % 90.1  % —  % —  % —  % Gold ounces produced 64,042 12,494 — — — Silver ounces produced (000’s) 127 19 — — — Gold ounces sold 69,050 21,407 — — — Silver ounces sold (000’s) 190 32 — — — Average realized price per gold ounce $ 4,266 $ 4,401 $ — $ — $ — Metal sales $ 304.8 $ 96.4 $ — $ — $ — Costs applicable to sales 2 $ 271.7 $ 92.4 $ — $ —