Company: AMKR
Filing Date: 2025-03-25
Form Type: PRE 14A
Source: 0001193125-25-062595
Chunk: 45

Company: AMKOR TECHNOLOGY, INC.
Filing Date: 2025-03-25
Form: PRE 14A
Chunk 45
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, 2027, subject to Mr. Rutten’s continued employment with the Company at the time of vesting, except as otherwise provided in the Rutten Agreement. For a discussion of the material post-employment compensation provisions under the RSU Award Agreements, please refer to the “Employment, Severance, and Change in Control Arrangements” section of this proxy statement. Performance Attainment - February 2023 PSUs.On February 16, 2023, the Compensation Committee awarded PSUs to our NEOs (the “February 2023 PSUs”). The February 2023 PSUs could be earned based on 2023 and 2024 cumulative two-yearearnings per share relative to a goal set at the start of 2023. The target number of February 2023 PSUs was as follows: Mr. Rutten, 167,037 PSUs; Ms. Faust, 50,111 PSUs; Mr. Rogers, 22,271 PSUs; Mr. Haghighi, 22,271 PSUs; and Mr. Engel, 16,703 PSUs. The February 2023 PSUs were to vest based on the level of achievement of an earnings per share performance goal for a performance period that began on January 1, 2023 and ended on December 31, 2024 (the “2023-2024 Performance Period”) according to the following terms:

| • |     | a threshold, target, and maximum level of performance was established |

| • |     | no PSUs would be earned unless the threshold level of performance was achieved |

| • |     | 50% of the PSUs awarded would be earned if 70% of the target earnings per share was achieved |

| • |     | 100% of the PSUs awarded would be earned if 100% of the target earnings per share was achieved |

| • |     | 200% of the PSUs awarded would be earned if 160% of the target earnings per share was achieved or exceeded |

| • |     | Straight-line interpolation would be used to determine attainment between the threshold (70%) and maximum (160%) levels of performance |

The threshold, target, and maximum two-yearcumulative earnings per share performance goals for the February 2023 PSUs were $3.70, $5.29, and $8.46, respectively. In all events, the maximum number of February 2023 PSUs earned was capped at