401(k) · DOL Form 5500 · 2023

A123 Systems LLC 401(k) Plan

Data updated 2026-08-25

$24M
Total assets Small plan by assets
115
Participants Small participant base
76th
Percentile by assets National rank
$212,182
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

$24M in assets, 115 participants

A123 Systems LLC's A123 Systems LLC 401(k) Plan reported $24M in total assets and 115 participants in its 2023 DOL Form 5500 filing, ranking in the 76th 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.

  • #12,525 in Manufacturing (18,722 peers)

Coverage in Michigan

A123 Systems LLC 401(k) Plan covers 115 participants in Michigan, about 18% of the average Michigan filer (state average ~638 per filing). Assets: $24M.

#12,525
in Manufacturing (18,722 peers)
+5.3%
assets growth YoY
0.2×
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 2023 · DOL Form 5500

$24,400,950 Top 24% higher than 76% of 127,068 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 2023

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

Plan-year 2023 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 (115 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • A123 Systems LLC 401(k) Plan reported net income rose from -$8M in the plan year 2022 filing to $1M in the plan year 2023 filing.
  • A123 Systems LLC 401(k) Plan end-of-year assets rose from $23M in the plan year 2022 filing to $24M in the plan year 2023 filing.

See the national 2022→2023 release diff →

DOL schedule card

Filing strip 352464405 · A123 Systems LLC PY 2023 · 401(k)

A123 Systems LLC 401(k) Plan · $24M · 115 · 76th

  • 5500 $24M
  • ASSETS 115
  • PCT 76th
  • EIN 401(k)
  • RANK near Mra - the Management Association, Inc. 401(k) Plan
  • PHOTO ind #12525

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$24MMra - the Management Association, Inc. 401(k) PlanMra - the Management Associa…$24MWarrior Invictus Holding Company Inc 401(k) Profit Sharing PlanWarrior Invictus Holding Com…$24MNephrology Associates of Kentuckiana, P. S. C. Retirement PlanNephrology Associates of Ken…$24MKentuckiana Comfort Center 401(k) Profit Sharing PlanKentuckiana Comfort Center 4…$24M
End-of-year total assets ($M) among A123 Systems LLC 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Michigan filing particulars

Total Assets (Beginning of Year)$23M
Net Assets (End of Year)$24M
Net Income$1M
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 -50510152025 Total assets ($B) Participants A123 Systems LLC 401(k) Plan, Total assets ($B): 0.02440095 · Participants: 115A123 Systems LLC 401(k) PlanGeneral Motors Retirement Savings Plan for Salaried Employees in the United States, Total assets ($B): 20.378449285 · Participants: 47299General Motors Retirement Savings Plan for Salaried Employees in the United StatesFord Motor Co. Savings and Stock Investment Plan for Salaried Employees, Total assets ($B): 15.588575271 · Participants: 30516Ford Motor Co. Savings and Stock Investment Plan for Salaried EmployeesThe Dow Chemical Company Employees' Savings Plan, Total assets ($B): 10.084842211 · Participants: 18088The Dow Chemical Company Employees' Savings PlanThe General Motors Personal Savings Plan for Hourly-Rate Employees in the United States, Total assets ($B): 8.580684909 · Participants: 40393The 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): 7.617084451 · Participants: 59195Ford 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 Mra - the Management Association, Inc. 401(k) Plan in WI ($24M); by covered participants it is St. Marys Foundry, Inc. 401(k) Savings Plan in OH (115 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (115 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. 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 2023? ▼
A123 Systems LLC 401(k) Plan grew at a solid clip - up 5.3% during 2023, from $23M to $24M. Reported net income was $1M.
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 76th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (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 Mra - the Management Association, Inc. 401(k) Plan in WI ($24M, 243 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 St. Marys Foundry, Inc. 401(k) Savings Plan in OH (115 participants, N/A in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

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.