STOCKHOLDERS' EQUITY: (Tables)
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3 Months Ended |
Mar. 31, 2025 |
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| Share based Compensation Plan |
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| Schedule of activity in treasury stock |
Activity in treasury stock in the three-month periods ended March 31, 2025 and 2024 was as follows (in millions): | | | | | | | | | 2025 | | 2024 | Southern Copper common shares | | | | | | | Balance as of January 1, | | $ | 2,337.3 | | $ | 2,766.7 | Dividends paid in common stock | | | (143.2) | | | — | Used for corporate purposes | | | (0.1) | | | (0.1) | Balance as of March 31, | | | 2,194.1 | | | 2,766.6 | | | | | | | | Parent Company (Grupo Mexico) common shares | | | | | | | Balance as of January 1, | | | 363.4 | | | 382.3 | Other activity, including dividend, interest and foreign currency translation effect | | | (3.3) | | | 8.3 | Balance as of March 31, | | | 360.1 | | | 390.6 | Treasury stock balance as of March 31, | | $ | 2,554.1 | | $ | 3,157.2 |
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| Schedule of activity in Directors' Stock Award Plan |
| | | | | | | 2025 | | 2024 | Total SCC shares reserved for the plan | | 600,000 | | 600,000 | Total shares granted at January 1, | | (444,400) | | (428,800) | Granted in the period | | (3,200) | | (2,800) | Total shares granted at March 31, | | (447,600) | | (431,600) | Remaining shares reserved | | 152,400 | | 168,400 |
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| Summary of non-controlling interest activity |
The following table presents the non-controlling interest activity the three-month period ended March 31, 2025 and 2024 (in millions): | | | | | | | | | 2025 | | 2024 | Balance as of January 1, | | $ | 66.6 | | $ | 63.1 | Net earnings | | | 3.2 | | | 2.8 | Dividend paid | | | (1.3) | | | (1.7) | Balance as of March 31, | | $ | 68.4 | | $ | 64.2 |
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| Employee Stock Purchase 2018 Plan |
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| Share based Compensation Plan |
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| Schedule of stock based compensation expense and unrecognized compensation expense |
The stock based compensation expense for the three-month period ended March 31, 2025 and 2024 and the unrecognized compensation expense under this plan were as follows (in millions): | | | | | | | | | 2025 | | 2024 | Stock based compensation expense | | $ | 0.2 | | $ | 0.2 | Unrecognized compensation expense | | $ | 0.8 | | $ | 1.5 |
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| Schedule of stock award activity |
| | | | | | | | | Unit Weighted Average | | | Shares | | Grant Date Fair Value | Outstanding shares at January 1, 2025 | | 1,901,089 | $ | 1.86 | Granted | | — | $ | — | Exercised | | (593,927) | | 1.86 | Forfeited | | — | | — | Outstanding shares at March 31, 2025 | | 1,307,162 | $ | 1.86 | Outstanding shares at January 1, 2024 | | 1,962,936 | $ | 1.86 | Granted | | — | | — | Exercised | | (22,216) | | 1.86 | Forfeited | | — | | — | Outstanding shares at March 31, 2024 | | 1,940,720 | $ | 1.86 |
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