The Middlesex Corporation

Littleton, MA ConstructionNAICS 237310

Self-funded health planPlan year 2024Renews July
783ParticipantsFirst year on file
$1.9MEst. pharmacy spend / yrParticipants × national avg.
Jul 2027Next renewalPlan year begins July 1
#3 of 3Construction in MABy participants

Overview

The Middlesex Corporation sponsors a self-funded health plan that covered 783 participants in plan year 2024. The plan year starts in July. Alongside medical, its benefits filing reports life insurance, dental, vision, short-term disability, and more.

Plan type
ERISA welfare benefit plan, self-funded (benefits paid from employer assets or a trust)
Participants
783
Plan year
Begins July 1 · next renewal July 2027
Health plans filed
The Middlesex Corporation Employee Benefits Plan, plan 501 (783 participants)
Broker compensation
$33K across insured contracts
MedicalLife insuranceDentalVisionShort-term disabilityLong-term disabilityDeath benefitsOther welfare benefits

Insurance carriers

Insured coverage reported on Schedule A. Self-funded medical claims aren't reported there.

CarrierCoverageCoveredPremiumBroker comp
The Lincoln National Life Insurance CompanyLife, Short-term disability, Long-term disability783$493K$33K
Metropolitan Life Insurance CompanyVision877$44K—

Pharmacy benefit estimate

StreamRX estimate for a plan this size. Not based on this plan's claims.

$1.9M/ year

Estimated prescription spend: 783 participants × $2,371 national average per member. Usually higher once dependents are counted.

$48K–$119K/ year

Typical savings opportunity found in independent reviews of plans this size.

Brands with a generic available$14K–$35K
Lower-cost therapeutic alternatives$21K–$43K
Generic pricing vs. actual cost$9K–$27K
PBM contract terms$5K–$14K
The DOL's PBM fee disclosure rule first applies to this plan for the plan year beginning July 2027: semiannual PBM compensation reports and an annual audit right.

Form 5500 filing details

Filing
Form 5500 with Schedule A, plan year 2024
Plan sponsor
The Middlesex Corporation
Sponsor EIN
04-2534615
Plan number
501
Filed with
U.S. Department of Labor (EBSA) via EFAST2

Verify this filing: search EIN 04-2534615 in the Department of Labor's EFAST2 Form 5500 search.

Retirement plan

Plan
Middlesex Corporation Retirement Savings Plan
Type
401(k) plan
Participants
1,165

About this data

Source: The Middlesex Corporation's Form 5500 filing for plan year 2024 and its Schedule A insurance reports, published by the U.S. Department of Labor. "Self-funded" means the filing reports benefits paid from employer assets or a trust, with no medical insurance contract or with a stop-loss contract. Pharmacy figures are StreamRX estimates based on national averages. StreamRX is not affiliated with The Middlesex Corporation.

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