The Middlesex Corporation 401(k) Review & Grade
Middlesex Corporation Retirement Savings Plan
Littleton, MAConstruction854 active participantsPlan year 2024✓ Auto-enroll
Estimate from the plan's Form 5500 filing · How we grade
$11,114Employer $ per active participant
$7,798Employee $ saved per active participant
0.18%Direct admin cost, % of plan assets
$117.9MNet plan assets, end of year
$105,928Average balance per account
Score breakdown
- Employer generosity48.9 / 5098th percentile for employer $ per participant
- Low cost14.3 / 2557th percentile for low admin cost vs. same-size plans
- Employee saving12.8 / 1585th percentile for employee $ per participant
- Plan features10 / 10Auto-enrollment, Default investment
- Red-flag deductions-13 pts2 issues reported on the filing
Total score73 / 100 · Grade B
This plan vs. peers
Peers: Construction plans with 500–2,499 active participants (498 plans).
| Measure | Percentile |
|---|---|
| Employer $ per participant | 98th |
| Lower admin cost | 57th |
| Employee saving | 85th |
| Peers that auto-enroll | 44% |
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Red flags from the filing
Late deposits: the filing says some employee contributions were not sent to the plan on time ($70 reported). That's money taken from paychecks that sat with the employer longer than the law allows.
Corrective distributions: the plan refunded $12,105 in contributions, which usually means it failed annual nondiscrimination testing.
What to do if you're in this plan
- Middlesex put in about $11,114 per active participant, more than the typical peer ($1,672). Contribute at least enough to collect the full match. Skipping it leaves part of your pay on the table.
- The filing shows total dollars, not the match formula. Ask HR for the Summary Plan Description so you know the exact match and vesting schedule.
- Fund expense ratios aren't in the filing. Look them up in your 404(a)(5) fee disclosure and favor low-cost index or target-date funds.
- The plan auto-enrolls employees. Check your default contribution rate. Defaults are often lower than what it takes to get the full match.
- The plan reported late deposits of employee contributions. Compare your pay stubs with your account statements, and contact the plan administrator if money shows up late.
- Changing jobs? You can usually leave the money in the plan, move it to your new employer's plan, or roll it into an IRA. Don't cash out: you'd owe taxes and possibly a 10% penalty.
The raw numbers from the filing
| Employer contributions | $9,491,155 |
| Participant (employee) contributions | $6,659,887 |
| Other contributions (incl. rollovers in) | $873,775 |
| Administrative expenses paid from the plan | $201,211 |
| Investment advisory & management fees | $41,999 |
| Other admin expenses | $600 |
| Benefits paid out | $16,506,298 |
| Net assets, start / end of year | $102.7M / $117.9M |
| Active participants, start / end of year | 821 / 887 |
| Participants with account balances | 1,113 |
| Auto-enrollment (feature code 2S) | Yes |
| Auditor | Citrin Cooperman & Company, LLP |
Largest service providers (Schedule C)
| Empower Annuity Insurance Company | $158,612 reported compensation |
| Ubs Financial Services Inc | $41,999 reported compensation |
| Qdro Consultants Company, LLC | $600 reported compensation |
Source: DOL EFAST2 Form 5500 filing, acknowledgment ID 20251010132224NAL0004648355001, received 2025-10-10, EIN 04-2534615, plan #001, plan year 2024-01-01 to 2024-12-31. Verify at efast.dol.gov.