| Earnings Per Share: Basic and diluted loss per share for the three-month periods ended March 31, 2026 and 2025 are calculated as follows (in thousands, except per share amounts): | | | | | | | | | | | | | | | | | | | Three Months Ended March 31, | | | | | | 2026 | | 2025 | | Basic earnings (loss) per share | | | | | | | | | Numerator: | | | | | | | | | Net income attributable to Albemarle Corporation | | | | | $ | 319,091 | | | $ | 41,348 | | | Mandatory convertible preferred stock dividends | | | | | (41,688) | | | (41,688) | | | Net income (loss) attributable to Albemarle Corporation common shareholders | | | | | $ | 277,403 | | | $ | (340) | | | Denominator: | | | | | | | | | Weighted-average common shares for basic earnings (loss) per share | | | | | 117,854 | | | 117,603 | | | Basic earnings (loss) per share | | | | | $ | 2.35 | | | $ | (0.00) | | | | | | | | | | | Diluted earnings (loss) per share | | | | | | | | | Numerator: | | | | | | | | | Net income attributable to Albemarle Corporation | | | | | $ | 319,091 | | | $ | 41,348 | | | Mandatory convertible preferred stock dividends | | | | | (41,688) | | | (41,688) | | | Net income (loss) attributable to Albemarle Corporation common shareholders | | | | | $ | 277,403 | | | $ | (340) | | | Denominator: | | | | | | | | | Weighted-average common shares for basic earnings (loss) per share | | | | | 117,854 | | | 117,603 | | | | | | | | | | | Incremental shares under stock compensation plans | | | | | 753 | | | — | | | Weighted-average common shares for diluted earnings (loss) per share | | | | | 118,607 | | | 117,603 | | | Diluted earnings (loss) per share | | | | | $ | 2.34 | | | $ | (0.00) | |
The following table summarizes the number of shares, calculated on a weighted average basis, not included in the computation of diluted earnings per share because their effect would have been anti-dilutive (in thousands): | | | | | | | | | | | | | | | | | | | Three Months Ended March 31, | | | | | | 2026 | | 2025 | | Shares assuming the conversion of the mandatory convertible preferred stock | | | | | 17,521 | | | 21,022 | | | Shares under the stock compensation plans | | | | | 97 | | | 1,161 | |
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