401(k) · DOL Form 5500 · 2022

The Middlesex Corporation 401(k) Plan

Data updated 2026-08-11

$87M
Total assets
868
Participants
92nd
Percentile by assets
$100,166
Avg per participant
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Official DOL plan name: The Middlesex Corporation Retirement Savings Plan · Sponsored by The Middlesex Corporation · Massachusetts · Construction

$87M in assets, 868 participants

The Middlesex Corporation's The Middlesex Corporation Retirement Savings Plan reported $87M in total assets and 868 participants in its 2022 DOL Form 5500 filing, ranking in the 92nd 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.

  • 92nd percentile by assets (of 139,126 plans)
  • #9,001 in Construction (9,927 peers)

Where The Middlesex Corporation Retirement Savings Plan sits by assets

The Middlesex Corporation Retirement Savings Plan sits in the top 10% of all filed plans by assets, $87M for 868 participants (~$100,166/participant), down 20.2% in 2022.

$87M
total plan assets (2022 EOY)
868
covered participants
92nd
percentile by assets (of 139,126 plans)
$100,166
avg assets per participant

The plan reported a net loss of $22M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

Where The Middlesex Corporation Retirement Savings Plan sits by total assets

The Middlesex Corporation Retirement Savings Plan vs every filed plan by assets

End-of-year total assets · plan year 2022 · DOL Form 5500

$86,944,368 Top 8% higher than 92% of 139,123 filed plans

This plan $0 $2,010,000,000 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 2022

State
Massachusetts
Industry
Construction

The Middlesex Corporation Retirement Savings Plan vs the 2022 asset distribution

By assets, The Middlesex Corporation Retirement Savings Plan outranks 92% of the 139,126 plans that filed a Form 5500 for the 2022 plan year, and holds roughly 0.9x the national average plan size of $100M (721 average participants).

Scale-class filing particulars (2022)

Total Assets (Beginning of Year)$109M
Net Assets (End of Year)$87M
Net Income-$22M
Employer EIN042534615
Plan Effective Date1992-10-16
Filing StatusFILING RECEIVED

Sponsor Plan History (The Middlesex Corporation)

$80M$90M$100M$110M$120M$130M 202220232024 $86.9M $118M ▲ +35.6%
Total plan assets by year, all The Middlesex Corporation plans on file
Year Plans Participants Total Assets
2022 1 868 $87M
2023 1 772 $103M
2024 1 821 $118M

Nearby 401(k) Plans in Massachusetts

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

The Middlesex Corporation Retirement Savings Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -200000200004000060000 -100102030 Total assets ($B) Participants The Middlesex Corpor…, Total assets ($B): 0.086944368 · Participants: 868The Middlesex Corpor…Fidelity Retirement …, Total assets ($B): 22.953563448 · Participants: 52036Fidelity Retirement …Liberty Mutual 401(k…, Total assets ($B): 8.79802945 · Participants: 32843Liberty Mutual 401(k…Massachusetts Instit…, Total assets ($B): 5.810585521 · Participants: 13690Massachusetts Instit…Philips North Americ…, Total assets ($B): 5.180251859 · Participants: 19750Philips North Americ…Boston Scientific Co…, Total assets ($B): 4.853752256 · Participants: 18359Boston Scientific Co…
The Middlesex Corporation Retirement Savings Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare The Middlesex Corporation Retirement Sav… side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to The Middlesex Corporation Retirement Savings Plan by total assets, not by location.

Frequently Asked Questions

How did The Middlesex Corporation Retirement Savings Plan assets move in 2022? ▼
The Middlesex Corporation Retirement Savings Plan declined sharply - down 20.2% during 2022, from $109M to $87M. Reported net income was -$22M.
How have The Middlesex Corporation plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), The Middlesex Corporation's sponsor-wide assets grew 35.6%, from $87M to $118M.
Where does The Middlesex Corporation Retirement Savings Plan rank by assets among Form 5500 filers? ▼
The Middlesex Corporation Retirement Savings Plan ranks in the 92nd percentile by end-of-year assets among 139,126 plans that reported assets for plan year 2022 (in the top 10% of all filed plans by assets).
Which 401(k) plans are similar in size to The Middlesex Corporation Retirement Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is Hornbeck Offshore Services, Inc. 401(k) Plan in LA ($87M, 624 participants).

Next read for The Middlesex Corporation Retirement Sav…

Scale reading

Ways to act on The Middlesex Corporation Retirement Savings Plan's numbers.

  • By total assets, The Middlesex Corporation Retirement Savings Plan ranks in the top 10% of all filed plans by assets. See the largest plans
  • Compare it side-by-side against 3 similar 401(k) plans in Massachusetts. Compare plans
  • The Middlesex Corporation's sponsor-wide assets have grown 35.6% since 2022 across 3 plan years on file. More Construction plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2022.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 042534615.

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.