| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | Three months ended | | Nine months ended |
| | | September 30, | | September 30, |
| Note | | 2025 | | 2024 | | 2025 | | 2024 |
| Cash flows generated from (used in): | | | | | | | | | |
| Operating activities | | | | | | | | | |
| Net earnings from continuing operations | | | $ | 56,176 | | | $ | 101,035 | | | $ | 269,969 | | | $ | 192,549 | |
| Adjustments for: | | | | | | | | | |
| Depreciation and amortization | | | 63,342 | | | 64,944 | | | 190,374 | | | 180,608 | |
| Finance costs | 10 | | 8,221 | | | 3,476 | | | 21,134 | | | 10,529 | |
| Interest income | 9 | | (8,561) | | | (6,060) | | | (25,782) | | | (17,346) | |
| Foreign exchange (gain) loss | | | (694) | | | 1,797 | | | 23,991 | | | 3,134 | |
| Income tax expense | 11 | | 53,917 | | | 28,223 | | | 54,604 | | | 65,986 | |
| | | | | | | | | |
| Loss (gain) on disposal of assets | | | 441 | | | 273 | | | (6,618) | | | 830 | |
| Unrealized loss on derivative contracts | 9 | | 22,194 | | | 33,055 | | | 66,844 | | | 61,908 | |
| | | | | | | | | |
| Write-down of assets | | | 3,261 | | | 2 | | | 8,426 | | | 1,412 | |
| | | | | | | | | |
| Share-based payments expense | 13 | | 6,802 | | | 4,083 | | | 15,347 | | | 9,808 | |
| Employee benefit plan expense | | | 719 | | | 1,115 | | | 2,820 | | | 3,153 | |
| Non-cash gain on deferred consideration | 4 | | — | | | (60,000) | | | — | | | (60,000) | |
| | | 205,818 | | | 171,943 | | | 621,109 | | | 452,571 | |
| Property reclamation payments | | | (1,284) | | | (926) | | | (3,688) | | | (2,419) | |
| Employee benefit plan payments | | | (298) | | | (255) | | | (1,087) | | | (1,175) | |
| | | | | | | | | |
| Income taxes paid | | | (29,316) | | | (10,308) | | | (120,136) | | | (59,349) | |
| Interest received | | | 8,561 | | | 6,060 | | | 25,782 | | | 17,346 | |
| Changes in non-cash operating working capital | 14 | | (13,273) | | | 14,385 | | | (63,194) | | | (18,575) | |
| Net cash generated from operating activities of continuing operations | | | 170,208 | | | 180,899 | | | 458,786 | | | 388,399 | |
| Net cash (used in) generated from operating activities of discontinued operations | | | (151) | | | (75) | | | 158 | | | (293) | |
| | | | | | | | | |
| Investing activities | | | | | | | | | |
| Additions to property, plant and equipment | | | (242,517) | | | (169,337) | | | (592,207) | | | (423,117) | |
| Capitalized interest paid | | | (8,437) | | | (9,136) | | | (28,457) | | | (23,224) | |
| | | | | | | | | |
| Proceeds from the sale of property, plant and equipment | | | 244 | | | 232 | | | 724 | | | 248 | |
| | | | | | | | | |
| Proceeds from sale of mining licenses | | | — | | | — | | | 2,500 | | | — | |
| Value added taxes related to mineral property expenditures, net | | | (5,954) | | | (5,968) | | | (7,005) | | | (8,593) | |
| Cash received from deferred consideration | 4 | | 60,000 | | | — | | | 60,000 | | | — | |
| (Purchase) sale of investments in marketable securities | | | (13,961) | | | — | | | 141,117 | | | (11,130) | |
Deposits on property, plant and equipment | | | (1,484) | | | — | | | (10,750) | | | — | |
| Decrease in other investments | | | — | | | — | | | — | | | 1,136 | |
| | | | | | | | | |
| | | | | | | | | |
| Net cash used in investing activities of continuing operations | | | (212,109) | | | (184,209) | | | (434,078) | | | (464,680) | |
| | | | | | | | | |
| | | | | | | | | |
| Financing activities | | | | | | | | | |
| Issuance of common shares for cash, net of share issuance costs | | | 1,575 | | | 1,340 | | | 9,102 | | | 13,659 | |
| Contributions from (distributions to) non-controlling interests | | | 53 | | | — | | | (264) | | | 173 | |
| Proceeds from Term Facility - Commercial loans and RRF loans | 7 | | 97,884 | | | 92,207 | | | 278,494 | | | 218,810 | |
| Proceeds from VAT Facility | 7 | | 26,329 | | | 18,034 | | | 63,888 | | | 37,340 | |
| Repayments of VAT Facility | 7 | | (25,664) | | | (15,473) | | | (54,068) | | | (30,962) | |
| | | | | | | | | |
| Term Facility commitment fees | | | — | | | — | | | (1,372) | | | (2,201) | |
| | | | | | | | | |
| Interest paid | | | (9,174) | | | (10,058) | | | (19,601) | | | (20,097) | |
| Principal portion of lease liabilities | | | (1,401) | | | (1,202) | | | (3,927) | | | (3,366) | |
| Purchase of shares for cancellation | 12 | | (78,793) | | | — | | | (123,381) | | | — | |
Purchase of shares held in trust for restricted share units | 12 | | (3,955) | | | — | | | (8,181) | | | (958) | |
| Net cash generated from financing activities of continuing operations | | | 6,854 | | | 84,848 | | | 140,690 | | | 212,398 | |
| | | | | | | | | |
| | | | | | | | | |
| Effect of exchange rates on cash and cash equivalents | | | 410 | | | — | | | 21,740 | | | — | |
| | | | | | | | | |
| Net (decrease) increase in cash and cash equivalents | | | (34,788) | | | 81,463 | | | 187,296 | | | 135,824 | |
| | | | | | | | | |
| Cash and cash equivalents - beginning of period | | | 1,078,572 | | | 595,052 | | | 856,797 | | | 540,473 | |
| Change in cash in disposal group held for sale | | | 151 | | | 75 | | | (158) | | | 293 | |
| Cash and cash equivalents - end of period | | | $ | 1,043,935 | | | $ | 676,590 | | | $ | 1,043,935 | | | $ | 676,590 | |