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Earnings (Loss) per Share | 9 Months Ended
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Sep. 29, 2024
Earnings (Loss) per Share [Abstract] |
Earnings (Loss) per Share | Note 4. Earnings (Loss) per Share (EPS) Basic earnings (loss) per share are based upon the weighted average number of common shares outstanding during the period. Diluted earnings (loss) per share are based upon the weighted average number of common shares outstanding during the period, assuming the issuance of common shares for all potentially dilutive common shares outstanding. The following table sets forth the computation of basic and diluted earnings (loss) per share:
|  | Three Months Ended |  |  | Nine Months Ended |
(in millions of dollars, except per share data) |  | Sep. 29, 2024 |  |  | Oct. 1, 2023 |  |  | Sep. 29, 2024 |  |  | Oct. 1, 2023 |
Net income (loss) attributable to Minerals Technologies Inc. |  | $ | 46.7 |  |  | $ | (19.2 | ) |  | $ | 113.1 |  |  | $ | 44.4 |
Weighted average shares outstanding |  |  | 32.1 |  |  |  | 32.5 |  |  |  | 32.2 |  |  |  | 32.5 |
Dilutive effect of stock options and deferred restricted stock units |  |  | 0.2 |  |  |  | — |  |  |  | 0.2 |  |  |  | 0.1 |
Weighted average shares outstanding, adjusted |  |  | 32.3 |  |  |  | 32.5 |  |  |  | 32.4 |  |  |  | 32.6 |
Basic earnings (loss) per share attributable to Minerals Technologies Inc. |  | $ | 1.45 |  |  | $ | (0.59 | ) |  | $ | 3.51 |  |  | $ | 1.37 |
Diluted earnings (loss) per share attributable to Minerals Technologies Inc. |  | $ | 1.45 |  |  | $ | (0.59 | ) |  | $ | 3.49 |  |  | $ | 1.36 |
Of the options outstanding of 1,466,366 and 1,604,217 for the three-month and nine-month periods ended September 29, 2024 and October 1, 2023, respectively, options to purchase 660,373 shares and 1,285,619 shares of common stock for the three-month and nine-month periods ending September 29, 2024 and October 1, 2023, respectively, were not included in the computation of diluted earnings (loss) per share because they were anti-dilutive, as the exercise prices of the options were greater than the average market price of the common shares.

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