Amkor Technology, Inc. 401(k) Plan: Login, Facts & Contact Information
Amkor Technology, Inc. 401(k) Login
242 former Amkor Technology, Inc. employees still have money in this plan.
Retirement plan providers can change. This information is from the plan's 2024 filing.
Amkor Technology, Inc. 401(k) Plan Facts
Source: Form 5500 for plan year 2024 (Jan 1, 2024 – Dec 31, 2024), filed Sep 18, 2025. Public filing with the U.S. Department of Labor.
Money in and out in plan year 2024
- $11.1 million went into the plan in contributions, $3.52 million of it from the employer (32%).
- $20.3 million was paid out to participants.
- Investment and other income added $28.4 million.
- Administrative expenses were $129,435, about $201 per account.
How the Amkor Technology, Inc. 401(k) changed, 2019–2024
| Plan year | Participants | Plan assets | Employer contributions | Benefits paid |
|---|---|---|---|---|
| 2019 | 654 | $162.3 million | $3.48 million | $15.8 million |
| 2020 | 638 | $186.4 million | $3.16 million | $8.65 million |
| 2021 | 643 | $204.1 million | $3.60 million | $18.5 million |
| 2022 | 645 | $174.4 million | $3.49 million | $6.72 million |
| 2023 | 668 | $203.9 million | $3.44 million | $13.4 million |
| 2024 | 650 | $222.9 million | $3.52 million | $20.3 million |
Amkor Technology, Inc. 401(k) Contact Information
Questions about the Amkor Technology, Inc. 401(k)
Does Amkor Technology, Inc contribute to the 401(k)?
Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $3.52 million, 32% of all contributions.
Does the Amkor Technology, Inc 401(k) have automatic enrollment?
Yes. The plan reports automatic enrollment of eligible employees.
How many people are in the Amkor Technology, Inc 401(k) plan?
650 participants at the start of plan year 2024, 392 of them active employees, and 242 former employees who still had money in the plan.
What is the average 401(k) balance at Amkor Technology, Inc?
About $346,078 per account: $222.9 million in plan assets across 644 accounts with a balance at the end of plan year 2024.
Who manages the Amkor Technology, Inc 401(k) accounts?
Vanguard (listed on the filing as THE VANGUARD GROUP, INC.) is the plan's recordkeeper, which is where participants log in to see their balance.
I no longer work at Amkor Technology, Inc. How do I access my 401(k)?
Your account stays with Vanguard after you leave, so you can log in with the same credentials. If your balance was small, the plan may have rolled it into an IRA in your name. If you can't find it, Beagle can locate it for you.