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Earnings Per Share | 6 Months Ended
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Jun. 30, 2025
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, performance-vested restricted stock units (“PSUs”) and time-vested restricted stock units (“RSUs”). The following table summarizes the computation of basic and diluted EPS:
| For the Three Months Ended June 30, |  | For the Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
| (In thousands, except per share data)
Net income attributable to Amkor common stockholders | $ | 54,417 |  |  | $ | 66,897 |  |  | $ | 75,545 |  |  | $ | 125,794 |
Weighted-average number of common shares outstanding - basic | 247,090 |  |  | 246,228 |  |  | 246,973 |  |  | 246,118 |
Effect of dilutive securities: |  |  |  |  |  |  |
Share-based awards | 716 |  |  | 1,632 |  |  | 869 |  |  | 1,672 |
Weighted-average number of common shares outstanding - diluted | 247,806 |  |  | 247,860 |  |  | 247,842 |  |  | 247,790 |
Net income attributable to Amkor per common share: |  |  |  |  |  |  |
Basic | $ | 0.22 |  |  | $ | 0.27 |  |  | $ | 0.31 |  |  | $ | 0.51 |
Diluted | 0.22 |  |  | 0.27 |  |  | 0.30 |  |  | 0.51 |
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 Three Months Ended June 30, |  | For the Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
| (In thousands)
Share-based awards | 984 |  |  | — |  |  | 378 |  |  | — |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/260/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-3 + Details
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