Plan Ledger DOL Form 5500 · updated monthly

Amkor Technology, Inc.401(k)

AMKOR TECHNOLOGY, INC. 401(K) PLAN · TEMPE, AZ · plan year 2024

Reported admin expense ratio · 2024
0.06%

Peer grade: A · admin costs + employer contributions vs same-size plans · how grading works

Amkor Technology, Inc. reported $129,435 in plan administrative expenses for 2024: 0.06% of average plan assets, lower than ~75% of peers. Employer contributions averaged $8,975 per active participant. This ratio covers administrative expenses reported on the plan's Schedule H only; fund-level expense ratios are not included in public structured data — see methodology.

Across the 2 years on file its reported administrative ratio fell from 0.08% to 0.06%. The plan sits in the $50M–$250M size bracket, benchmarked here against 10,352 comparable plans and shown alongside other manufacturing employers. By assets it is the 72nd-largest of 1,285 plans among Arizona employers on file, and the 1,077th of 13,661 in manufacturing. In 2024, employees put in $2.00 for every $1.00 the employer contributed.

Plan summary
Net assets, end of year$222,874,124
Participants with balances644
Active participants392
Employer contributions$3,518,263
Employee contributions$7,046,519
Employer contribution per active participant$8,975
Average account balance$346,078
Benefits paid to participants$20,315,499
Plan auditUnmodified (clean) audit opinion
AuditorCBIZ CPAS P. C.
Plan history3
Yearassets · accounts · employer contribution
2024$222.9M · 644 accts · $3.5M emplr
2023$203.9M · 647 accts · $3.4M emplr
2022$174.4M · 664 accts · $3.5M emplr
The Amkor Technology, Inc. 401(k) match · 2024
Employer contribution per active participant$8,975
Median for plans this size$3,635
2024$8,975 per active participant
2023$9,214 per active participant
2022$9,122 per active participant

Amkor Technology, Inc.'s 2024 employer contribution ran above the $3,635 median for plans its size, placing it in the top quarter of its peers. Filings report dollars actually contributed, not the match formula; the formula itself (for example, 50% of the first 6% of pay) lives in the plan's summary plan description from HR.

What these fees cost you

Annual cost at the plan's reported 2024 administrative ratio, against the median plan its size; fund expense ratios are extra. Compare any plan.

Service providers · 20242
THE VANGUARD GROUP, INC. · Recordkeeping · Consulting$62,596
VANGUARD ADVISERS INC. · Investment advisory (participants)$67,989

Compensation shown is direct payments from plan assets reported on Schedule C. Providers paid through fund revenue-sharing appear as indirect.

Recordkeeper by year2
2024Vanguard
2023Vanguard

Looking for an account from a past job here? How to find an old 401(k).

Administrative cost history3
2024$129,435 · 0.06%
2023$132,306 · 0.07%
2022$149,384 · 0.08%
Same employer
Similar plansManufacturing · Arizona
Rogers Corporation AZ$244.5M · 0.06%
Axon Enterprise, Inc. AZ$228.6M · 0.25%
Mitel (Delaware), Inc. AZ$227.8M · 0.11%
Bar-S Foods Co. AZ$211.8M · 0.24%
Cavco Industries, Inc. AZ$181.8M · 0.27%
Asm America, Inc. AZ$180.5M · 0.09%
Sunstate Equipment Co., LLC AZ$164.0M · 0.19%

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Source: U.S. Department of Labor, Form 5500 series, EIN 231722724 · Verify on EFAST2 · Amounts are as reported by the plan sponsor for the plan year shown.