Middlesex 401(k) match, vesting and fees

Plan year 2024 filingMiddlesex Corporation Retirement Savings Plan · Plan 001 · EIN 04-2534615Updated Oct 2026

What Middlesex's 401(k) plan says about matching contributions

The match terms have not been published from this plan's filing yet.
The plan year 2024 filing reports $9.5M in employer contributions, about $8,528 per participant. That total includes any match and profit-sharing; it is not a match formula. Plan year 2024 Form 5500 ↗
$105,928
Average account balance
1,165
Participants (end of year)
$118M
Plan assets (end of year)
0.18%
Admin expenses ÷ assets

Plan features

Match, vesting and enrollment details have not been published from this plan's audit report yet. The figures below come from the structured filing.

RecordkeeperEmpower Annuity Insurance CompanySchedule C ↗
Independent auditorCitrin Cooperman & Company, LLP (unmodified opinion, limited scope)Schedule H ↗
Plan type and status401(k) · ActiveForm 5500 ↗
Late participant contributionsReported on the filingSchedule H ↗

How the plan compares

Plan year 2024 medians for 570 defined-contribution plans in construction with 1,000 to 4,999 participants.

Middlesex: employer contribution per participant$8,528
Peer median$2,900
Middlesex: average balance$105,928
Peer median$67,876
Middlesex: admin expenses ÷ assets0.18%
Peer median0.26%

Admin expenses are the plan's reported administrative expenses divided by its assets; they do not include fund expense ratios.

Plan history

Plan assets went from $109M at the end of plan year 2021 to $118M at the end of plan year 2024.

$109M2021$86.9M2022$103M2023$118M2024
End-of-year figures from each plan year's Form 5500 filing for the Middlesex plan.
Plan yearParticipantsAssetsEmployer contributionsPer participantAdmin expense ratioMatch formulaFiling
20241,165$118M$9.5M$8,5280.18%Not publishedForm 5500 ↗
20231,095$103M$6.5M$6,1830.19%Not publishedForm 5500 ↗
20221,046$86.9M$6.6M$6,6460.19%Not publishedForm 5500 ↗
20211,126$109M$9.1M$8,4550.18%Not publishedForm 5500 ↗

Common questions

Does Middlesex match 401(k) contributions?

The match terms for the Middlesex Corporation Retirement Savings Plan have not been published from its filing yet. The plan year 2024 filing reports $9.5M in employer contributions, about $8,528 per participant. That total includes any match and profit-sharing; it is not a match formula.

When is the Middlesex 401(k) match vested?

The vesting schedule for the Middlesex Corporation Retirement Savings Plan is not in the data published so far. Your Summary Plan Description states it.

Who manages the Middlesex 401(k)?

The recordkeeper listed on Schedule C of the plan year 2024 filing is Empower Annuity Insurance Company. The plan administrator is The Middlesex Corporation.

I left Middlesex. How do I find my old 401(k)?

Your account stays in the plan until you move it. Contact the plan administrator (The Middlesex Corporation, (978) 742-4443) or the recordkeeper, Empower Annuity Insurance Company. The Middlesex old 401(k) page lists the contacts from every plan filing. Find an old Middlesex 401(k)

Data from the public Form 5500 annual reports Middlesex filed with the U.S. Department of Labor (plan years 2021 and 2022 and 2023 and 2024) and, where noted, the attached independent auditor's report. Plan terms may have changed since the filing; check your current Summary Plan Description. PlanFacts is not affiliated with Middlesex. Not financial advice. Report a correction · Methodology