401(k) · DOL Form 5500 · 2024

Millstone Medical Outsourcing, LLC 401(k) Plan

Data updated 2026-08-25

$16M
Total assets Small plan by assets
578
Participants Below avg headcount
66th
Percentile by assets National rank
$27,645
Avg per participant Low balance/head
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Official DOL plan name: Millstone Medical Outsourcing, LLC 401(k) Retirement Plan · Sponsored by Millstone Medical Outsourcing, LLC · Massachusetts · Administrative & Support Services

$16M in assets, 578 participants

Millstone Medical Outsourcing, LLC's Millstone Medical Outsourcing, LLC 401(k) Retirement Plan reported $16M in total assets and 578 participants in its 2024 DOL Form 5500 filing, ranking in the 66th 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.

  • #3,562 in Administrative & Support Services (4,368 peers)

Millstone Medical Outsourcing, LLC multi-year trail

Millstone Medical Outsourcing, LLC's plans moved +57.9% in assets from 2022 to 2024; this filing shows Millstone Medical Outsourcing, LLC 401(k) Retirement Plan at $16M / 578 participants.

#3,562
in Administrative & Support Services (4,368 peers)
+19.4%
assets growth YoY

Millstone Medical Outsourcing, LLC 401(k) Retirement Plan's mid-pack asset rank among Administrative & Support Services and all filers

Millstone Medical Outsourcing, LLC 401(k) Retirement Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$15,978,609 Top 34% higher than 66% of 123,620 filed plans

This plan $0 $2,050,000,000 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 2024

Millstone Medical Outsourcing, LLC 401(k) Retirement Plan among mid-size filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Millstone Medical Outsourcing, LLC 401(k) Retirement Plan sits mid-pack in the medium band (578 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Millstone Medical Outsourcing, LLC 401(k) Retirement Plan reported net income fell from $3M in the plan year 2023 filing to $3M in the plan year 2024 filing.
  • Millstone Medical Outsourcing, LLC 401(k) Retirement Plan end-of-year assets rose from $13M in the plan year 2023 filing to $16M in the plan year 2024 filing.
  • Millstone Medical Outsourcing, LLC 401(k) Retirement Plan reported participants rose from 549 in the plan year 2023 filing to 578 in the plan year 2024 filing.

See the national 2023→2024 release diff →

Published 5500 schedule card

Filing strip 841654439 · Millstone Medical Outsourcing, LLC PY 2024 · 401(k)

Millstone Medical Outsourcing, LLC 401(k) Retirement Plan · $16M · 578 · 66th

  • PART $16M
  • PART 578
  • PART 66th
  • PART 401(k)
  • PART near Fnb 401(k) Employee Stock Ownership Plan
  • PART ind #3562

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Administrative & Support Services retirement plans → · Plans in Massachusetts →

Millstone Medical Outsourcing, LLC 401(k) Retirement Plan in the asset neighbourhood

Millstone Medical Outsourcing, LLC 401(k) Retirement PlanMillstone Medical Outsourcin…$16MFnb 401(k) Employee Stock Ownership PlanFnb 401(k) Employee Stock Ow…$16MConversica, Inc. 401(k) Plan$16M403(b) Thrift Plan for Employees of Washburn Center for Children403(b) Thrift Plan for Emplo…$16M401(k) Profit Sharing Plan of Goodwill Keystone Area401(k) Profit Sharing Plan o…$16M
End-of-year total assets ($M) among Millstone Medical Outsourcing, LLC 401(k) Retirement Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Millstone Medical Outsourcing, LLC multi-year asset trail

Sponsor-wide plan assets over time

All Millstone Medical Outsourcing, LLC plans reported in each filing year

Latest sponsor-wide plan assets
$16M 57.91648514902368% vs 2022
2024 filing year
$8M$10M$12M$14M$16M$18M 202220232024 $10.1M $16M ▲ +57.9%
Year Plans Participants Total Assets
2022 1 498 $10M
2023 1 549 $13M
2024 1 578 $16M

Millstone Medical Outsourcing, LLC filing trail (2024)

Total Assets (Beginning of Year)$13M
Net Assets (End of Year)$16M
Net Income$3M
Employer EIN841654439
Plan Effective Date2008-01-01
Filing StatusFILING RECEIVED

Nearby 401(k) Plans in Massachusetts

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

Millstone Medical Outsourcing, LLC 401(k) Retirement Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Millstone Medical Outsourcing, LLC 401(k) Retirement Plan, Total assets ($B): 0.015978609 · Participants: 578Millstone Medical Outsourcing, LLC 401(k) Retirement PlanFidelity Retirement Savings Plan, Total assets ($B): 34.201609937 · Participants: 66907Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 11.352606499 · Participants: 34618Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 7.720373045 · Participants: 14762Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 6.775289067 · Participants: 20639Boston Scientific Corporation 401(k) Retirement Savings PlanState Street Salary Savings Program, Total assets ($B): 6.532301643 · Participants: 12777State Street Salary Savings Program
Millstone Medical Outsourcing, LLC 401(k) Retirement Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants

Millstone Medical Outsourcing, LLC 401(k) Retirement Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Fnb 401(k) Employee Stock Ownership Plan in WY ($16M); by covered participants it is Jl Audio 401(k) Plan in FL (578 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (578 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Millstone Medical Outsourcing, LLC 401(k) Retirement Plan assets move in 2024?
Millstone Medical Outsourcing, LLC 401(k) Retirement Plan grew sharply - up 19.4% during 2024, from $13M to $16M. Reported net income was $3M.
How have Millstone Medical Outsourcing, LLC plan assets changed over time?
Across 3 plan years on file (2022-2024), Millstone Medical Outsourcing, LLC's sponsor-wide assets grew 57.9%, from $10M to $16M.
Which 401(k) plans are similar in size to Millstone Medical Outsourcing, LLC 401(k) Retirement Plan?
Among 401(k) plans in other states, the closest by assets is Fnb 401(k) Employee Stock Ownership Plan in WY ($16M, 135 participants).
Which 401(k) plans cover a similar participant headcount to Millstone Medical Outsourcing, LLC 401(k) Retirement Plan?
Among 401(k) plans in other states, the closest by covered participants is Jl Audio 401(k) Plan in FL (578 participants, N/A in assets).