401(k) · DOL Form 5500 · 2024

A123 Systems LLC 401(k) Plan

Data updated 2026-08-25

$25M
Total assets Below avg plan size
111
Participants Small participant base
75th
Percentile by assets National rank
$228,181
Avg per participant Above avg balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: A123 Systems LLC 401(k) Plan · Sponsored by A123 Systems LLC · Michigan · Manufacturing

$25M in assets, 111 participants

A123 Systems LLC's A123 Systems LLC 401(k) Plan reported $25M in total assets and 111 participants in its 2024 DOL Form 5500 filing, ranking in the 75th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #11,568 in Manufacturing (17,777 peers)

Coverage in Michigan

A123 Systems LLC 401(k) Plan covers 111 participants in Michigan, about 17% of the average Michigan filer (state average ~638 per filing). Assets: $25M.

#11,568
in Manufacturing (17,777 peers)
+3.8%
assets growth YoY
0.3×
vs typical plan assets (national mean)

A123 Systems LLC 401(k) Plan's outsized position by total assets

A123 Systems LLC 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$25,328,137 Top 25% higher than 75% of 123,620 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024

A123 Systems LLC 401(k) Plan among mid-size filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. A123 Systems LLC 401(k) Plan sits mid-pack in the medium band (111 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • A123 Systems LLC 401(k) Plan reported net income fell from $1M in the plan year 2023 filing to $927K in the plan year 2024 filing.
  • A123 Systems LLC 401(k) Plan end-of-year assets rose from $24M in the plan year 2023 filing to $25M in the plan year 2024 filing.
  • A123 Systems LLC 401(k) Plan reported participants fell from 115 in the plan year 2023 filing to 111 in the plan year 2024 filing.

See the national 2023→2024 release diff →

Published 5500 schedule card

Filing strip 352464405 · A123 Systems LLC PY 2024 · 401(k)

A123 Systems LLC 401(k) Plan · $25M · 111 · 75th

  • VS-ST $25M
  • BOY 111
  • SCH 75th
  • EBSA 401(k)
  • PART near Mak Technologies 401(k) Retirement Plan
  • TYPE ind #11568

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Manufacturing retirement plans → · Plans in Michigan →

A123 Systems LLC 401(k) Plan in the asset neighbourhood

A123 Systems LLC 401(k) Plan$25MMak Technologies 401(k) Retirement PlanMak Technologies 401(k) Reti…$25MGuidepost Growth Management Company 401(k) PlanGuidepost Growth Management …$25M401(k) Savings Plan for Peter Marino Architects401(k) Savings Plan for Pete…$25MParadigm Talent Agency LLC 401(k) Retirement PlanParadigm Talent Agency LLC 4…$25M
End-of-year total assets ($M) among A123 Systems LLC 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Michigan filing particulars

Total Assets (Beginning of Year)$24M
Net Assets (End of Year)$25M
Net Income$927K
Employer EIN352464405
Plan Effective Date2013-05-01
Filing StatusFILING RECEIVED

Sponsor Plan History (A123 Systems LLC)

Sponsor-wide plan assets over time

All A123 Systems LLC plans reported in each filing year

Latest sponsor-wide plan assets
$25M 9.280650461422194% vs 2022
2024 filing year
$22M$23M$24M$25M$26M 202220232024 $23.2M $25.3M ▲ +9.3%
Year Plans Participants Total Assets
2022 1 116 $23M
2023 1 115 $24M
2024 1 111 $25M

Nearby 401(k) Plans in Michigan

Peer 401(k) plans, same state, same plan type, ranked by total assets.

A123 Systems LLC 401(k) Plan vs. nearby 401(k) plans in Michigan, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -100102030 Total assets ($B) Participants A123 Systems LLC 401(k) Plan, Total assets ($B): 0.025328137 · Participants: 111A123 Systems LLC 401(k) PlanGeneral Motors Retirement Savings Plan for Salaried Employees in the United States, Total assets ($B): 23.0591668 · Participants: 43053General Motors Retirement Savings Plan for Salaried Employees in the United StatesFord Motor Co. Savings and Stock Investment Plan for Salaried Employees, Total assets ($B): 17.26893589 · Participants: 31790Ford Motor Co. Savings and Stock Investment Plan for Salaried EmployeesThe Dow Chemical Company Employees' Savings Plan, Total assets ($B): 10.768606712 · Participants: 17128The Dow Chemical Company Employees' Savings PlanThe General Motors Personal Savings Plan for Hourly-Rate Employees in the United States, Total assets ($B): 9.568379082 · Participants: 42513The General Motors Personal Savings Plan for Hourly-Rate Employees in the United StatesFord Motor Co. Tax-Efficient Savings Plan for Hourly Employees, Total assets ($B): 8.2932975 · Participants: 60497Ford Motor Co. Tax-Efficient Savings Plan for Hourly Employees
A123 Systems LLC 401(k) Plan vs. nearby 401(k) plans in Michigan, assets vs. participants
Compare A123 Systems LLC 401(k) Plan side-by-side with 3 peers →

A123 Systems LLC 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Michigan, the nearest 401(k) by assets is Mak Technologies 401(k) Retirement Plan in MA ($25M); by covered participants it is R.N. Industries Trucking, Inc. Profit Sharing Plan in UT (111 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (111 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did A123 Systems LLC 401(k) Plan assets move in 2024? ▼
A123 Systems LLC 401(k) Plan edged up modestly - up 3.8% during 2024, from $24M to $25M. Reported net income was $927K.
How have A123 Systems LLC plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), A123 Systems LLC's sponsor-wide assets grew 9.3%, from $23M to $25M.
Where does A123 Systems LLC 401(k) Plan rank by assets among Form 5500 filers? ▼
A123 Systems LLC 401(k) Plan ranks in the 75th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to A123 Systems LLC 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Mak Technologies 401(k) Retirement Plan in MA ($25M, 70 participants).
Which 401(k) plans cover a similar participant headcount to A123 Systems LLC 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is R.N. Industries Trucking, Inc. Profit Sharing Plan in UT (111 participants, $2M in assets).

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 352464405.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.