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Earnings Per Share | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share Basic earnings per share (“EPS”) is computed by dividing net income attributable to Amkor common stockholders by the weighted-average number of common shares outstanding during the period. The weighted-average number of common shares outstanding is reduced for treasury stock. Diluted EPS is computed based on the weighted-average number of common shares outstanding plus the effect of dilutive potential common shares outstanding during the period. Dilutive potential common shares include outstanding stock options, PSUs, RSUs and unvested restricted shares. The following table summarizes the computations of basic and diluted EPS:
| For the Year Ended December 31,
| 2023 |  | 2022 |  | 2021
| (In thousands, except per share data)
Net income attributable to Amkor common stockholders | $ | 359,813 |  |  | $ | 765,823 |  |  | $ | 642,995 |
Weighted-average number of common shares outstanding — basic | 245,628 |  |  | 244,676 |  |  | 243,878 |
Effect of dilutive securities: |  |  |  |  |
Share-based awards | 1,548 |  |  | 1,529 |  |  | 1,826 |
Weighted-average number of common shares outstanding — diluted | 247,176 |  |  | 246,205 |  |  | 245,704 |
Net income attributable to Amkor per common share: |  |  |  |  |
Basic | $ | 1.46 |  |  | $ | 3.13 |  |  | $ | 2.64 |
Diluted | $ | 1.46 |  |  | $ | 3.11 |  |  | $ | 2.62 |
The following table summarizes the potential shares of common stock that were excluded from diluted EPS, because the effect of including these potential shares was anti-dilutive:
| For the Year Ended December 31,
| 2023 |  | 2022 |  | 2021
| (In thousands)
Share-based awards | 2 |  |  | 180 |  |  | 112 |

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