401(k) · DOL Form 5500 · 2022

Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) 401(k) Plan

Data updated 2026-08-25

$45M
Total assets Below avg plan size
447
Participants Below avg headcount
87th
Percentile by assets National rank
$101,548
Avg per participant Below avg balance/head
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Official DOL plan name: Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan · Sponsored by Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) · Iowa · Construction

$45M in assets, 447 participants

Central Iowa Sheet Metal Workers Supplemental Retirement 401(k)'s Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan reported $45M in total assets and 447 participants in its 2022 DOL Form 5500 filing, ranking in the 87th 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.

  • #8,487 in Construction (9,927 peers)

Where Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan sits by assets

Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan sits in the top quartile of all filed plans by assets, $45M for 447 participants (~$101,548/participant), down 18.6% in 2022.

#8,487
in Construction (9,927 peers)
-18.6%
assets change YoY
0.5×
vs typical plan assets (national mean)

The plan reported a net loss of $10M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan's outsized position by total assets

Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2022 · DOL Form 5500

$45,392,089 Top 13% higher than 87% of 139,123 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 2022

Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan among mid-size filed plans by headcount

Plan-year 2022 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan sits mid-pack in the medium band (447 participants).

Published 5500 schedule card

Filing strip 421401231 · Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) PY 2022 · 401(k)

Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan · $45M · 447 · 87th

  • 5500 $45M
  • 5500 447
  • 5500 87th
  • 5500 401(k)
  • 5500 near Tuthill Corporation Supplemental Investment Retirement Plan and Trust
  • 5500 ind #8487

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 Construction retirement plans → · Plans in Iowa →

Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan in the asset neighbourhood

Coresite, L.L.C. Employee Retirement PlanCoresite, L.L.C. Employee Re…$45MJim Ellis Atlanta, Inc. 401(k) PlanJim Ellis Atlanta, Inc. 401(…$45MCentral Iowa Sheet Metal Workers Supplemental Retirement 401(k) PlanCentral Iowa Sheet Metal Wor…$45MTuthill Corporation Supplemental Investment Retirement Plan and TrustTuthill Corporation Suppleme…$45MRed Thread Spaces LLC 401(k) PlanRed Thread Spaces LLC 401(k)…$45M
End-of-year total assets ($M) among Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2022.

Scale-class filing particulars (2022)

Total Assets (Beginning of Year)$56M
Net Assets (End of Year)$45M
Net Income-$10M
Employer EIN421401231
Plan Effective Date1993-04-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Central Iowa Sheet Metal Workers Supplemental Retirement 401(k))

Sponsor-wide plan assets over time

All Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) plans reported in each filing year

Latest sponsor-wide plan assets
$62M 36.16089799259955% vs 2022
2024 filing year
$40M$45M$50M$55M$60M$65M 202220232024 $45.4M $61.8M ▲ +36.2%
Year Plans Participants Total Assets
2022 1 447 $45M
2023 1 470 $55M
2024 1 486 $62M

Nearby 401(k) Plans in Iowa

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

Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan vs. nearby 401(k) plans in Iowa, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -101234 Total assets ($B) Participants Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan, Total assets ($B): 0.045392089 · Participants: 447Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) PlanThe Principal Select Savings Plan, Total assets ($B): 3.613396259 · Participants: 12201The Principal Select Savings PlanIowa Health System Section 401(k) Retirement Savings Plan, Total assets ($B): 2.684422851 · Participants: 28603Iowa Health System Section 401(k) Retirement Savings PlanThe Hy-Vee and Affiliates 401(k) Plan, Total assets ($B): 2.447514997 · Participants: 59826The Hy-Vee and Affiliates 401(k) PlanThe Rsm US LLP Retirement Plan, Total assets ($B): 2.275604074 · Participants: 13793The Rsm US LLP Retirement PlanTransamerica 401(k) Retirement Savings Plan, Total assets ($B): 2.116061137 · Participants: 7262Transamerica 401(k) Retirement Savings Plan
Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan vs. nearby 401(k) plans in Iowa, assets vs. participants
Compare Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan side-by-side with 3 peers →

Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Iowa, the nearest 401(k) by assets is Tuthill Corporation Supplemental Investment Retirement Plan and Trust in IL ($45M); by covered participants it is Bakersfield Heart Hospital 401(k) Plan in CA (447 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (447 participants); asset peers above are excluded.

DOL Form 5500 plan year 2022. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan assets move in 2022? ▼
Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan declined sharply - down 18.6% during 2022, from $56M to $45M. Reported net income was -$10M.
How have Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Central Iowa Sheet Metal Workers Supplemental Retirement 401(k)'s sponsor-wide assets grew 36.2%, from $45M to $62M.
Where does Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan rank by assets among Form 5500 filers? ▼
Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan ranks in the 87th percentile by end-of-year assets among 139,126 plans that reported assets for plan year 2022 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Tuthill Corporation Supplemental Investment Retirement Plan and Trust in IL ($45M, 269 participants).
Which 401(k) plans cover a similar participant headcount to Central Iowa Sheet Metal Workers Supplemental Retirement 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Bakersfield Heart Hospital 401(k) Plan in CA (447 participants, N/A in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2022.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 421401231.

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.