Amkor Technology, Inc. 401(k) Plan
ERISA Form 5500 plan record drawn from DOL EBSA — verify with linked source filings below.
Sponsored by Amkor Technology, Inc. · Arizona · Manufacturing
What the 2023 filing shows
Amkor Technology, Inc. 401(k) Plan holds $223M for 373 participants — about $597,518 per participant, up 9.3% over the 2024 plan year.
- $223M
- total plan assets (2024 EOY)
- 373
- covered participants
- $597,518
- avg assets per participant
- +9.3%
- assets growth YoY
What the Filing Says About Amkor Technology, Inc. 401(k) Plan
Amkor Technology, Inc. 401(k) Plan is a 401(k) retirement plan sponsored by Amkor Technology, Inc., headquartered in Arizona. As of the 2024 Form 5500 filing, the plan reports $223M in total end-of-year assets and covers 373 participants across the Manufacturing industry. The sponsor's EIN on file with the U.S. Department of Labor is 231722724, and the plan has been effective since 1986-01-01. Its filing status is currently FILING RECEIVED.
Year over year, total assets moved from $204M at the beginning of 2024 to $223M at year-end — a gain of 9.3%. Net assets (after liabilities) closed the year at $223M, with reported net income of $19M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.
Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows — a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.
Financial Summary (2023)
| Total Assets (Beginning of Year) | $204M |
| Total Assets (End of Year) | $223M |
| Net Assets (End of Year) | $223M |
| Net Income | $19M |
| Plan Type | 401(k) |
| Employer EIN | 231722724 |
| Plan Effective Date | 1986-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Amkor Technology, Inc.)
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 1 | 375 | $174M |
| 2023 | 1 | 383 | $204M |
| 2024 | 1 | 373 | $223M |
Nearby 401(k) Plans in Arizona
Peer 401(k) plans — same state, same plan type — ranked by total assets.
- Bechtel Trust & Thrift Plan $5.7B · 7,448
- Banner Health Employees 401(k) Plan $4.3B · 52,452
- Republic Services, Inc. 401(k) Plan $2.4B · 28,131
- Freeport-Mcmoran Inc. Employee Capital Accumulation Program $2.3B · 13,105
- Stantec 401(k) Plan $2.0B · 10,719
Related Data
Guides
Frequently Asked Questions
How much money is in the Amkor Technology, Inc. 401(k) Plan? ▼
What type of plan is Amkor Technology, Inc. 401(k) Plan? ▼
Who sponsors the Amkor Technology, Inc. 401(k) Plan? ▼
How did Amkor Technology, Inc. 401(k) Plan perform in 2024? ▼
Where can I find official filings for Amkor Technology, Inc. 401(k) Plan? ▼
How does Amkor Technology, Inc. 401(k) Plan compare to other plans? ▼
Explore PlainRetire
Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.
Source: DOL EFAST2 filing system (efast.dol.gov) — original filing retrieval by EIN 231722724.
Reference: IRS Publication 560 — Retirement Plans for Small Business, contribution-limit rules.
Reference: IRS Publication 590-B — Distributions from IRAs, RMD rules under SECURE Act 2.0.
Read our methodology — how this data is sourced, computed, and verified.