401(k) · DOL Form 5500 · 2024

Marshfield Clinic, Inc. 401(k) Plan

Data updated 2026-08-25

$1.8B
Total assets Very large vs avg
10,134
Participants Very large workforce
99th
Percentile by assets National rank
$177,167
Avg per participant Above avg balance/head
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Official DOL plan name: Marshfield Clinic Salary Reduction Plan · Sponsored by Marshfield Clinic, Inc. · Wisconsin · Healthcare & Social Assistance

$1.8B in assets, 10,134 participants

Marshfield Clinic, Inc.'s Marshfield Clinic Salary Reduction Plan reported $1.8B in total assets and 10,134 participants in its 2024 DOL Form 5500 filing, ranking in the 99th 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.

  • #16,793 in Healthcare & Social Assistance (16,916 peers)

Coverage in Wisconsin

Marshfield Clinic Salary Reduction Plan covers 10,134 participants in Wisconsin, 18x the typical Wisconsin plan (state average ~563 per filing). Assets: $1.8B.

#16,793
in Healthcare & Social Assistance (16,916 peers)
+4.7%
assets growth YoY
18×
vs typical plan assets (national mean)

Marshfield Clinic Salary Reduction Plan's outsized position by total assets

Marshfield Clinic Salary Reduction Plan vs every filed plan by assets

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

$1,795,406,271 Top 1% higher than 99% 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

Marshfield Clinic Salary Reduction Plan's mega-plan peer group by participant headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Marshfield Clinic Salary Reduction Plan is a mega filing (10,134 participants), the rightmost band on the breakdown.

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Marshfield Clinic Salary Reduction Plan reported net income fell from $176M in the plan year 2023 filing to $81M in the plan year 2024 filing.
  • Marshfield Clinic Salary Reduction Plan reported participants fell from 11,787 in the plan year 2023 filing to 10,134 in the plan year 2024 filing.
  • Marshfield Clinic Salary Reduction Plan end-of-year assets rose from $1.7B in the plan year 2023 filing to $1.8B in the plan year 2024 filing.

See the national 2023→2024 release diff →

Form 5500 schedule snapshot

Filing strip 390452970 · Marshfield Clinic, Inc. PY 2024 · 401(k)

Marshfield Clinic Salary Reduction Plan · $1.8B · 10,134 · 99th

  • RANK $1.8B
  • RANK 10,134
  • RANK 99th
  • RANK 401(k)
  • RANK near Mondelez Global LLC Thrift Plan
  • RANK ind #16793

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 Healthcare & Social Assistance retirement plans → · Plans in Wisconsin →

Marshfield Clinic Salary Reduction Plan in the asset neighbourhood

Marshfield Clinic Salary Reduction PlanMarshfield Clinic Salary Red…$1.8BMondelez Global LLC Thrift PlanMondelez Global LLC Thrift P…$1.8BRobinson Companies Retirement PlanRobinson Companies Retiremen…$1.8BSs&c Technologies, Inc. 401(k) Retirement Savings PlanSs&c Technologies, Inc. 401(…$1.8BTeamhealth 401(k) Plan$1.8B
End-of-year total assets ($B) among Marshfield Clinic Salary Reduction Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Wisconsin filing particulars

Total Assets (Beginning of Year)$1.7B
Net Assets (End of Year)$1.8B
Net Income$81M
Employer EIN390452970
Plan Effective Date1985-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Marshfield Clinic, Inc.)

Sponsor-wide plan assets over time

All Marshfield Clinic, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$3.1B 6.786339053830599% vs 2022
2024 filing year
$2.8B$2.9B$3B$3.1B 202220232024 $2.87B $3.06B ▲ +6.6%
Year Plans Participants Total Assets
2022 2 20,155 $2.9B
2023 2 20,855 $3.0B
2024 2 18,462 $3.1B

Nearby 401(k) Plans in Wisconsin

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

Marshfield Clinic Salary Reduction Plan vs. nearby 401(k) plans in Wisconsin, assets vs. participants Scatter plot of 6 data points. 020000400006000080000100000 024681012 Total assets ($B) Participants Marshfield Clinic Salary Reduction Plan, Total assets ($B): 1.795406271 · Participants: 10134Marshfield Clinic Salary Reduction PlanAdvocate Aurora Health 401(k) Plan, Total assets ($B): 10.487791739 · Participants: 80015Advocate Aurora Health 401(k) PlanJohnson Controls Retirement Savings and Investment Plan, Total assets ($B): 7.188548319 · Participants: 28489Johnson Controls Retirement Savings and Investment PlanFiserv 401(k) Savings Plan, Total assets ($B): 5.136404794 · Participants: 26372Fiserv 401(k) Savings PlanKimberly-Clark Corporation 401(k) & Profit Sharing Plan, Total assets ($B): 4.988151 · Participants: 11661Kimberly-Clark Corporation 401(k) & Profit Sharing PlanRockwell Automation Retirement Savings Plan, Total assets ($B): 3.765132976 · Participants: 9217Rockwell Automation Retirement Savings Plan
Marshfield Clinic Salary Reduction Plan vs. nearby 401(k) plans in Wisconsin, assets vs. participants
Compare Marshfield Clinic Salary Reduction Plan side-by-side with 3 peers →

Scale composition for Marshfield Clinic Salary Reduction Plan

Marshfield Clinic Salary Reduction Plan reports $1.8B in end-of-year assets across 10,134 participants (0.015% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.011% of 93,925,755 covered participants) - about $177,167 per participant (1.3x the national average assets-per-participant) . Net income for plan year 2024 was $81M.

This plan identity (EIN 390452970, plan #002) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $1.5B to $1.8B (+16.7%) while covered participants moved from 11,902 to 10,134 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 11,902 $1.5B Open filing
2023 11,787 $1.7B Open filing
2024 · index core 10,134 $1.8B This page

The same sponsor also keeps 1 other index-core plan on PlainRetire:

Marshfield Clinic Salary Reduction Plan's out-of-state 401(k) peers by assets and headcount

Outside Wisconsin, the nearest 401(k) by assets is Mondelez Global LLC Thrift Plan in IL ($1.8B); by covered participants it is New York Home Health Holdings 401(k) Profit Sharing Plan in NJ (10,130 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($1.8B here).

Similar participant headcount

Nearest other-state filings by covered participants (10,134 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 Marshfield Clinic Salary Reduction Plan assets move in 2024? ▼
Marshfield Clinic Salary Reduction Plan edged up modestly - up 4.7% during 2024, from $1.7B to $1.8B. Reported net income was $81M.
How have Marshfield Clinic, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Marshfield Clinic, Inc.'s sponsor-wide assets grew 6.8%, from $2.9B to $3.1B.
Where does Marshfield Clinic Salary Reduction Plan rank by assets among Form 5500 filers? ▼
Marshfield Clinic Salary Reduction Plan ranks in the 99th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (among the largest 1% of all filed plans).
Which 401(k) plans are similar in size to Marshfield Clinic Salary Reduction Plan? ▼
Among 401(k) plans in other states, the closest by assets is Mondelez Global LLC Thrift Plan in IL ($1.8B, 6,043 participants).
Which 401(k) plans cover a similar participant headcount to Marshfield Clinic Salary Reduction Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is New York Home Health Holdings 401(k) Profit Sharing Plan in NJ (10,130 participants, $4M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 390452970.

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.