2023 plan-year M sponsor index DOL Form 5500

Plans by Sponsor: M

ERISA Form 5500 plan record drawn from DOL EBSA — verify with linked source filings below.

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27,916 retirement plans with sponsors starting with "M"

Browsing Retirement Plans: Sponsors Starting With "M"

This letter index groups 27,916 retirement plans whose sponsor name begins with the letter "M". The full browse index covers 400,652 plans across all 26 letters of the alphabet. Results are paginated 50 per page, and you are currently viewing page 342 of 559. Each listing links to a detail page with the plan's Form 5500 fields — plan type, total assets, participant count, sponsor EIN, state of record, and filing status for the 2023 plan year.

Sort controls above let you reorder the list by sponsor name (default alphabetical), participant count (largest first), or plan year. The participant column shows total covered workers — a mix of active employees, separated employees with remaining balances, and retirees receiving benefits. Sponsors are listed as they appear on the Form 5500 filing, which may differ from the public-facing corporate brand; a single holding company can sponsor multiple plans, and large employers may also appear under subsidiary names.

All data on this page comes from U.S. Department of Labor Form 5500 annual returns released through EFAST2. The dataset covers plans with 100+ participants plus smaller plans that file voluntarily. Figures reflect a single plan-year snapshot and fluctuate with market performance, contributions, and benefit payouts. This browse index is informational only, summarizing public regulatory filings for research and educational purposes, and is not retirement, tax, legal, or financial advice. Before relying on any figure to evaluate an employer's plan or make retirement decisions, verify the underlying filing directly on EFAST2 and consult a qualified professional.

Showing 17,051–17,100 of 27,916

Sort by: Sponsor Name Participants Plan Year
Plan Participants
Mid-Atlantic Permanente Medical Group, P.C. 401(k) Plan
Mid-Atlantic Permanente Medical Group, PC
 1,935
Mid-Atlantic Permanente Medical Group, P.C. 401(k) Plan
Mid-Atlantic Permanente Medical Group, PC
 1,967
Mid-Atlantic Permanente Medical Group, P.C. 401(k) Plan
Mid-Atlantic Permanente Medical Group, PC
 2,118
Mid-Atlantic Rto, Inc. 401(k) Profit Sharing Plan
Mid-Atlantic Rto, Inc.
 4
Mid-Atlantic Rto, Inc. 401(k) Profit Sharing Plan
Mid-Atlantic Rto, Inc.
 5
Mid-Atlantic Rto, Inc. 401(k) Profit Sharing Plan
Mid-Atlantic Rto, Inc.
 7
Mid-Atlantic Solutions, Inc. 401(k) Plan
Mid-Atlantic Solutions, Inc.
 123
Mid-Atlantic Solutions, Inc. 401(k) Plan
Mid-Atlantic Solutions, Inc.
 129
Mid-Atlantic Solutions, Inc. 401(k) Plan
Mid-Atlantic Solutions, Inc.
 124
Mid-Atlantic States District Council Participating Locals Annuity Fund
Mid-Atlantic States District Council Participating Locals Annuity Fund
 2,809
Mid-Atlantic States District Council Participating Locals Annuity Fund
Mid-Atlantic States District Council Participating Locals Annuity Fund
 2,849
Mid-Atlantic States District Council Participating Locals Annuity Fund
Mid-Atlantic States District Council Participating Locals Annuity Fund
 6,604
Mid-Atlantic Wellness Group, Inc. 401(k) Plan
Mid-Atlantic Wellness Group, Inc.
 3
Mid-Atlantic Wellness Group, Inc. 401(k) Plan
Mid-Atlantic Wellness Group, Inc.
 4
Mid-Atlantic Wellness Group, Inc. 401(k) Plan
Mid-Atlantic Wellness Group, Inc.
 4
Mid-Atlantic Women's Care, P.L.C. Profit Sharing Plan
Mid-Atlantic Women's Care, P.L.C.
 439
Mid-Atlantic Women's Care, P.L.C. Profit Sharing Plan
Mid-Atlantic Women's Care, P.L.C.
 516
Mid-Atlantic Women's Care, P.L.C. Profit Sharing Plan
Mid-Atlantic Women's Care, P.L.C.
 506
Mid-City Electric Company Employees Profit Sharing Plan
Mid-City Electric Company
 78
Mid-City Electric Company Employees Profit Sharing Plan
Mid-City Electric Company
 89
Mid-City 401(k) Plan
Mid-City Scrap Iron & Salvage Co., Inc.
 127
Mid-City 401(k) Plan
Mid-City Scrap Iron & Salvage Co., Inc.
 97
Mid-City Supply Co., Inc. 401(k) Plan
Mid-City Supply Co., Inc.
 122
Mid-City Supply Co., Inc. 401(k) Plan
Mid-City Supply Co., Inc.
 130
Mid-City Supply Co., Inc. 401(k) Plan
Mid-City Supply Co., Inc.
 134
Mid-Coast Electric Supply, Inc. 401(k) Plan
Mid-Coast Electric Supply, Inc.
 99
Mid-Columbia Children's Council, Inc. 401(k) Plan
Mid-Columbia Children's Council, Inc.
 117
Mid-Columbia Children's Council, Inc. 401(k) Plan
Mid-Columbia Children's Council, Inc.
 112
Mid-Columbia Children's Council, Inc. 401(k) Plan
Mid-Columbia Children's Council, Inc.
 120
Mid-Columbia Family Physicians, P.S. 401(k) Profit Sharing Plan
Mid-Columbia Family Physicians, P.S.
 42
Mid-Columbia Family Physicians, P.S. 401(k) Profit Sharing Plan
Mid-Columbia Family Physicians, P.S.
 34
Mid-Columbia Family Physicians, P.S. 401(k) Profit Sharing Plan
Mid-Columbia Family Physicians, P.S.
 33
Mid-Columbia Medical Center Deferred Compensation Plan
Mid-Columbia Medical Center
 917
Mid-Columbia Medical Center Deferred Compensation Plan
Mid-Columbia Medical Center
 852
Mid-Columbia Medical Center Deferred Compensation Plan
Mid-Columbia Medical Center
 863
Mid-Con Carriers Corporation 401(k) Plan
Mid-Con Carriers Corporation
 108
Mid-Con Energy Operating LLC 401(k) Profit Sharing Plan & Trust
Mid-Con Energy Operating LLC
 13
Mid-Con Energy Operating LLC 401(k) Profit Sharing Plan & Trust
Mid-Con Energy Operating LLC
 N/A
Mid-Continent Engineering Holdings, LLC Retirement Savings Plan and Trust
Mid-Continent Engineering Holdings, LLC
 237
Mid-Continent Instrument Co, Inc. Profit Sharing/401(k) P&t
Mid-Continent Instrument Co., Inc.
 183
Mid-Continent Instrument Co, Inc. Profit Sharing/401(k) P&t
Mid-Continent Instrument Co., Inc.
 198
Mid-Continent Instrument Co, Inc. Profit Sharing/401(k) P&t
Mid-Continent Instrument Co., Inc.
 209
Mid-Continental Companies, Inc. 401(k) Plan
Mid-Continental Companies, Inc.
 186
Mid-Continental Restoration Company, Inc. Employees Stock Ownership Plan and Trust
Mid-Continental Restoration Company, Inc
 204
Mid-Continental Restoration Company, Inc. Employees Stock Ownership Plan and Trust
Mid-Continental Restoration Company, Inc
 190
Mid-Continental Restoration Company, Inc. Employees Stock Ownership Plan and Trust
Mid-Continental Restoration Company, Inc
 212
Mid-Continental Restoration Company, Inc. 401(k) Plan
Mid-Continental Restoration Company, Inc.
 221
Mid-Continental Restoration Company, Inc. 401(k) Plan
Mid-Continental Restoration Company, Inc.
 241
Mid-Continental Restoration Company, Inc. 401(k) Plan
Mid-Continental Restoration Company, Inc.
 261
Mid-Cumberland Community Action Agency 401(k) Plan
Mid-Cumberland Community Action Age
 160

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Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.

Why Form 5500 Data Matters for Retirement Planning

Form 5500 is the annual return that virtually every private-sector retirement plan in the United States files with the Department of Labor. The filing covers funding, participant counts, plan investments, fees, service providers, and corrective contributions. Because the data is collected for regulatory oversight rather than marketing, it is one of the most consistent windows into the retirement economy: the same questions are asked of plans across all industries and all states, year after year. That consistency makes it possible to compare plans, sponsors, and markets on equal footing — a kind of comparability that voluntary survey data and vendor brochures cannot provide.

PlainRetire reorganizes the Form 5500 universe so a participant, employer, or analyst can ask everyday questions of the dataset without reading thousands of pages of agency documentation. Browsing by state surfaces concentration patterns: where pension assets sit, which states host the largest 401(k) sponsors, where retirement coverage trails the national average. Browsing by industry reveals the structural difference between sectors that historically relied on defined-benefit pensions and sectors that adopted defined-contribution plans early. Browsing by plan size highlights both the largest sponsors — typically Fortune 500 employers and multi-employer Taft–Hartley funds — and the long tail of small plans that collectively cover millions of workers.

What This Hub Page Aggregates

Each hub page on PlainRetire is a navigable index into the underlying database. The page shows summary counts, the most recent Form 5500 vintage, and direct links to individual plan detail pages. Detail pages carry the canonical filings, schedules where applicable, and audit trail back to the DOL's EFAST2 disclosure portal. Where the underlying dataset supports it, hub pages also expose key aggregates: total participant counts, aggregate assets, plan-type breakdowns (401(k), pension, profit-sharing, ESOP), and changes over the most recent reporting period.

Plan data is updated as DOL releases new annual Form 5500 datasets. Filings have a roughly seven-month lag from plan year end, so the most recent vintage typically reflects the previous full calendar year. This lag is inherent to the disclosure regime — plans are given time to gather audit reports and service-provider statements — and PlainRetire reflects the timing transparently rather than backfilling estimates.

Reading the Data With Appropriate Caveats

Aggregate numbers are useful for trend-spotting and structural comparison; they are less useful for decisions about a specific plan. The participant count for a state, for instance, includes both very large plans (which dominate the total) and very small plans (which influence median but not mean). When evaluating a specific employer's plan, drill into the plan detail page and consider plan-type, asset-mix, fee structure, and audit history — these details are flattened in any hub-level aggregate. Where regulatory updates change the categorization of a plan, PlainRetire preserves the historical filing alongside the most recent one so longitudinal analyses remain valid.