Other · DOL Form 5500 · 2022

Trustees of Iron Wkers' Mid-America Supplemental Retirement Plan

Data updated 2026-07-24

$586M
Total assets
6,365
Participants
98th
Percentile by assets
$92,030
Avg per participant

Official DOL plan name: Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund · Sponsored by Trustees of Iron Wkers' Mid-America Supplemental · Illinois · Construction

$586M in assets, 6,365 participants

Trustees of Iron Wkers' Mid-America Supplemental's Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund reported $586M in total assets and 6,365 participants in its 2022 DOL Form 5500 filing, ranking in the 98th 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.

  • 98th percentile by assets (of 139,258 plans)

What the 2022 filing shows

Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund holds $586M for 6,365 participants - about $92,030 per participant, in the top 5% of all filed plans by assets, down 14.8% over the 2022 plan year.

$586M
total plan assets (2022 EOY)
6,365
covered participants
98th
percentile by assets (of 139,258 plans)
$92,030
avg assets per participant

The plan reported a net loss of $99M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

State
Industry
Construction

Other · DOL Form 5500 · 2022

What the Filing Says About Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund

Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund is an Other retirement plan sponsored by Trustees of Iron Wkers' Mid-America Supplemental, headquartered in Illinois. According to the U.S. Department of Labor's 2022 Form 5500 filing, the plan reports $586M in total end-of-year assets and covers 6,365 participants across the Construction industry. The sponsor's EIN on file with the U.S. Department of Labor is 364108124, and the plan has been effective since 1997-01-01. Its filing status is currently FILING RECEIVED.

Year over year, total assets pulled back noticeably from $688M at the beginning of 2022 to $586M at year-end - down 14.8%. Net assets (after liabilities) closed the year at $583M, with reported net income of -$99M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.

Across the 3 plan years Trustees of Iron Wkers' Mid-America Supplemental has on file with PlainRetire (2022-2024), sponsor-wide plan assets have moved from $586M to $777M, a gain of 32.7%, while reported participants moved from 6,365 to 6,642 (+4.4%). The strongest year on file by total sponsor assets was 2024 at $777M; the softest was 2022 at $586M. Year-by-year, sponsor-wide filings show: 2022 - $586M in assets across 1 plan covering 6,365 participants; 2023 - $689M in assets across 1 plan covering 6,507 participants; 2024 - $777M in assets across 1 plan covering 6,642 participants.

By assets, Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund outranks 98% of the 139,258 plans that filed a Form 5500 for the 2022 plan year, and holds roughly 5.9x the national average plan size of $100M and 730 average participants.

Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows, a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.

How the percentile is calculated: we count every plan that filed a 2022 Form 5500 with a reported end-of-year asset figure (139,258 plans), rank Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund against all of them by total assets, and report the share of those plans it outranks. A plan reporting no asset figure for the year is excluded from the ranking rather than assumed to be zero.

Financial Summary (2022)

Total Assets (Beginning of Year)$688M
Total Assets (End of Year)$586M
Net Assets (End of Year)$583M
Net Income-$99M
Plan TypeOther
Employer EIN364108124
Plan Effective Date1997-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Trustees of Iron Wkers' Mid-America Supplemental)

$500M$600M$700M$800M 202220232024 $586M $777M ▲ +32.7%
Total plan assets by year, all Trustees of Iron Wkers' Mid-America Supplemental 401(k) plans on file
Year Plans Participants Total Assets
2022 1 6,365 $586M
2023 1 6,507 $689M
2024 1 6,642 $777M

Nearby Other Plans in Illinois

Peer Other plans, same state, same plan type, ranked by total assets.

Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund vs. nearby Other plans in Illinois, assets vs. participants

Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund vs. nearby Other plans in Illinois, assets vs. participants Scatter plot of 6 data points. 05000100001500020000 02468 Total assets ($B) Participants Iron Workers' Mid-Am…Washington Universit…Northwestern Univers…The University of Ch…Northshore Universit…The University of Ch…
Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund vs. nearby Other plans in Illinois, assets vs. participants

Similar-Sized Other Plans Nationally

Other plans in other states closest to Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund by total assets, not by location.

Frequently Asked Questions

How much money is in the Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund?
As of the 2022 Form 5500 filing, Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund holds $586M in total assets with 6,365 participants. It is sponsored by Trustees of Iron Wkers' Mid-America Supplemental.
What type of plan is Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund?
Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund is an Other plan. It has been effective since 1997-01-01. The plan is filed with the U.S. Department of Labor under EIN 364108124.
Who sponsors the Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund?
Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund is sponsored by Trustees of Iron Wkers' Mid-America Supplemental, located in Illinois. The sponsor's EIN is 364108124 and the plan operates in the Construction industry.
How did Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund perform in 2022?
Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund pulled back noticeably - down 14.8% during 2022, moving from $688M to $586M in total assets. Net income was -$99M.

What this filing means

Ways to act on Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund's numbers.

  • By total assets, Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund ranks in the top 5% of all filed plans by assets. See the largest plans
  • Compare it side-by-side against 3 similar Other plans in Illinois. Compare plans
  • Trustees of Iron Wkers' Mid-America Supplemental's sponsor-wide assets have grown 32.7% since 2022 across 3 plan years on file. More Construction plans
  • An Other plan works differently from other retirement plan types, understand the structural differences before comparing. Compare plan types

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 364108124.

Reference: IRS Publication 560, Retirement Plans for Small Business, contribution-limit rules.

Reference: IRS Publication 590-B, Distributions from IRAs, RMD rules under SECURE Act 2.0.

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

Every figure on PlainRetire is rendered directly from the Department of Labor's Form 5500 annual return filings, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-07-24.