401(k) · DOL Form 5500 · 2023

Bio-Serv Corporation 401(k) Plan

Data updated 2026-08-25

$33M
Total assets Below avg plan size
273
Participants Below avg headcount
80th
Percentile by assets National rank
$119,480
Avg per participant Near avg balance/head
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Official DOL plan name: Bio-Serv Corporation Employees Retirement Savings Plan · Sponsored by Bio-Serv Corporation · Michigan · Administrative & Support Services

$33M in assets, 273 participants

Bio-Serv Corporation's Bio-Serv Corporation Employees Retirement Savings Plan reported $33M in total assets and 273 participants in its 2023 DOL Form 5500 filing, ranking in the 80th 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.

  • #3,932 in Administrative & Support Services (4,372 peers)

Coverage in Michigan

Bio-Serv Corporation Employees Retirement Savings Plan covers 273 participants in Michigan, about 43% of the average Michigan filer (state average ~638 per filing). Assets: $33M.

#3,932
in Administrative & Support Services (4,372 peers)
+16.1%
assets growth YoY
0.3×
vs typical plan assets (national mean)

Bio-Serv Corporation Employees Retirement Savings Plan's outsized position by total assets

Bio-Serv Corporation Employees Retirement Savings Plan vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$32,617,969 Top 20% higher than 80% of 127,068 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 2023

Bio-Serv Corporation Employees Retirement Savings Plan among mid-size filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Bio-Serv Corporation Employees Retirement Savings Plan sits mid-pack in the medium band (273 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Bio-Serv Corporation Employees Retirement Savings Plan reported net income rose from -$7M in the plan year 2022 filing to $5M in the plan year 2023 filing.
  • Bio-Serv Corporation Employees Retirement Savings Plan end-of-year assets rose from $28M in the plan year 2022 filing to $33M in the plan year 2023 filing.

See the national 2022→2023 release diff →

Published 5500 schedule card

Filing strip 381643006 · Bio-Serv Corporation PY 2023 · 401(k)

Bio-Serv Corporation Employees Retirement Savings Plan · $33M · 273 · 80th

  • SCH $33M
  • SCH 273
  • SCH 80th
  • SCH 401(k)
  • SCH near Service Wire Company Employees' Retirement and Savings Program
  • SCH ind #3932

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 Michigan →

Bio-Serv Corporation Employees Retirement Savings Plan in the asset neighbourhood

Bio-Serv Corporation Employees Retirement Savings PlanBio-Serv Corporation Employe…$33MService Wire Company Employees' Retirement and Savings ProgramService Wire Company Employe…$33MCopic Companies 401(k) Plan$33MNts Development Company Retirement Savings PlNts Development Company Reti…$33MHardel Mutual Plywood Corporation 401(k) Profit Sharing PlanHardel Mutual Plywood Corpor…$33M
End-of-year total assets ($M) among Bio-Serv Corporation Employees Retirement Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Michigan filing particulars

Total Assets (Beginning of Year)$28M
Net Assets (End of Year)$33M
Net Income$5M
Employer EIN381643006
Plan Effective Date1985-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Bio-Serv Corporation)

Sponsor-wide plan assets over time

All Bio-Serv Corporation plans reported in each filing year

Latest sponsor-wide plan assets
$35M 26.2775964438654% vs 2022
2024 filing year
$25M$30M$35M$40M 202220232024 $28.1M $35.5M ▲ +26.3%
Year Plans Participants Total Assets
2022 1 275 $28M
2023 1 273 $33M
2024 1 281 $35M

Nearby 401(k) Plans in Michigan

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

Bio-Serv Corporation Employees Retirement Savings Plan vs. nearby 401(k) plans in Michigan, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -50510152025 Total assets ($B) Participants Bio-Serv Corporation Employees Retirement Savings Plan, Total assets ($B): 0.032617969 · Participants: 273Bio-Serv Corporation Employees Retirement Savings PlanGeneral Motors Retirement Savings Plan for Salaried Employees in the United States, Total assets ($B): 20.378449285 · Participants: 47299General Motors Retirement Savings Plan for Salaried Employees in the United StatesFord Motor Co. Savings and Stock Investment Plan for Salaried Employees, Total assets ($B): 15.588575271 · Participants: 30516Ford Motor Co. Savings and Stock Investment Plan for Salaried EmployeesThe Dow Chemical Company Employees' Savings Plan, Total assets ($B): 10.084842211 · Participants: 18088The Dow Chemical Company Employees' Savings PlanThe General Motors Personal Savings Plan for Hourly-Rate Employees in the United States, Total assets ($B): 8.580684909 · Participants: 40393The General Motors Personal Savings Plan for Hourly-Rate Employees in the United StatesFord Motor Co. Tax-Efficient Savings Plan for Hourly Employees, Total assets ($B): 7.617084451 · Participants: 59195Ford Motor Co. Tax-Efficient Savings Plan for Hourly Employees
Bio-Serv Corporation Employees Retirement Savings Plan vs. nearby 401(k) plans in Michigan, assets vs. participants
Compare Bio-Serv Corporation Employees Retirement Savings Plan side-by-side with 3 peers →

Bio-Serv Corporation Employees Retirement Savings Plan's out-of-state 401(k) peers by assets and headcount

Outside Michigan, the nearest 401(k) by assets is Service Wire Company Employees' Retirement and Savings Program in WV ($33M); by covered participants it is Rx Savings Solutions 401(k) Plan in KS (273 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (273 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Bio-Serv Corporation Employees Retirement Savings Plan assets move in 2023? ▼
Bio-Serv Corporation Employees Retirement Savings Plan grew sharply - up 16.1% during 2023, from $28M to $33M. Reported net income was $5M.
How have Bio-Serv Corporation plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Bio-Serv Corporation's sponsor-wide assets grew 26.3%, from $28M to $35M.
Where does Bio-Serv Corporation Employees Retirement Savings Plan rank by assets among Form 5500 filers? ▼
Bio-Serv Corporation Employees Retirement Savings Plan ranks in the 80th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Bio-Serv Corporation Employees Retirement Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is Service Wire Company Employees' Retirement and Savings Program in WV ($33M, 453 participants).
Which 401(k) plans cover a similar participant headcount to Bio-Serv Corporation Employees Retirement Savings Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Rx Savings Solutions 401(k) Plan in KS (273 participants, N/A in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 381643006.

Read our methodology - how this data is sourced, computed, and verified.

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