| Revenue |
18. Revenue The following is a disaggregation of revenue categorized by commodities sold for the three-month and nine-month periods ended September 30, 2025 and 2024: | | Three-month | | | Three-month | | | Nine-month | | | Nine-month | | | | period ended | | | period ended | | | period ended | | | period ended | | | | September 30, | | | September 30, | | | September 30, | | | September 30, | | | | 2025 | | | 2024 Revised (1) | | | 2025 | | | 2024 Revised (1) | | | | | | | | | | | | | | | Silver | | | | | | | | | | | | | Sales revenue | | $ | 17,212 | | | $ | 13,630 | | | $ | 45,950 | | | $ | 49,011 | | Derivative pricing adjustments | | | (351 | ) | | | (1,547 | ) | | | 755 | | | | (887 | ) | | | | 16,861 | | | | 12,083 | | | | 46,705 | | | | 48,124 | | Zinc | | | | | | | | | | | | | | | | | Sales revenue | | $ | 108 | | | $ | 9,509 | | | $ | 11,883 | | | $ | 29,431 | | Derivative pricing adjustments | | | 73 | | | | 235 | | | | 155 | | | | 890 | | | | | 181 | | | | 9,744 | | | | 12,038 | | | | 30,321 | | Lead | | | | | | | | | | | | | | | | | Sales revenue | | $ | 2,048 | | | $ | 4,482 | | | $ | 7,312 | | | $ | 14,274 | | Derivative pricing adjustments | | | (41 | ) | | | (105 | ) | | | (175 | ) | | | 53 | | | | | 2,007 | | | | 4,377 | | | | 7,137 | | | | 14,327 | | Other by-products | | | | | | | | | | | | | | | | | Sales revenue | | $ | 4 | | | $ | 216 | | | $ | 354 | | | $ | 808 | | Derivative pricing adjustments | | | 26 | | | | 92 | | | | 89 | | | | 306 | | | | | 30 | | | | 308 | | | | 443 | | | | 1,114 | | | | | | | | | | | | | | | | | | | Total sales revenue | | $ | 19,372 | | | $ | 27,837 | | | $ | 65,499 | | | $ | 93,524 | | Total derivative pricing adjustments | | | (293 | ) | | | (1,325 | ) | | | 824 | | | | 362 | | Gross revenue | | $ | 19,079 | | | $ | 26,512 | | | $ | 66,323 | | | $ | 93,886 | | Proceeds before intended use | | | 12,934 | | | | 990 | | | | 23,536 | | | | 1,695 | | Treatment and selling costs | | | (1,417 | ) | | | (5,176 | ) | | | (8,789 | ) | | | (19,190 | ) | | | $ | 30,596 | | | $ | 22,326 | | | $ | 81,070 | | | $ | 76,391 | |
(1) Certain fiscal 2024 amounts were reclassified from revenue to cost of sales (see Note 19). Derivative pricing adjustments represent subsequent variations in revenue recognized as an embedded derivative from contracts with customers and are accounted for as financial instruments (see Note 22). |