XML 23 R13.htm IDEA: XBRL DOCUMENT
v3.25.3

Earnings Per Share | 9 Months Ended
--- | ---
Sep. 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 September 30, |  | For the Nine Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
| (In thousands, except per share data)
Net income attributable to Amkor common stockholders | $ | 126,589 |  |  | $ | 122,569 |  |  | $ | 202,134 |  |  | $ | 248,363 |
Weighted-average number of common shares outstanding - basic | 247,158 |  |  | 246,480 |  |  | 247,035 |  |  | 246,239 |
Effect of dilutive securities: |  |  |  |  |  |  |
Share-based awards | 1,144 |  |  | 1,442 |  |  | 1,019 |  |  | 1,559 |
Weighted-average number of common shares outstanding - diluted | 248,302 |  |  | 247,922 |  |  | 248,054 |  |  | 247,798 |
Net income attributable to Amkor per common share: |  |  |  |  |  |  |
Basic | $ | 0.51 |  |  | $ | 0.50 |  |  | $ | 0.82 |  |  | $ | 1.01 |
Diluted | 0.51 |  |  | 0.49 |  |  | 0.81 |  |  | 1.00 |
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 September 30, |  | For the Nine Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
| (In thousands)
Share-based awards | 18 |  |  | — |  |  | 3 |  |  | — |

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration