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.
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 Type | Other |
| Employer EIN | 364108124 |
| Plan Effective Date | 1997-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Trustees of Iron Wkers' Mid-America Supplemental)
| 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
- Washington University Retirement Savings Plan $5.9B · 15,925
- Northwestern University Retirement Plan $3.5B · 9,465
- The University of Chicago Contributory Retirement Plan $3.1B · 4,552
- Northshore University Healthsystem Tax Deferred Annuity Plan $1.8B · 13,159
- The University of Chicago Supplemental Retirement Plan $1.5B · 7,855
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.
- Rady Children's Hospital- San Diego 403(b) Plan (CA) $587M · 5,308
- Williams College Retirement Income Plan (MA) $585M · 1,335
- Carpenters & Joiners Defined Contribution Plan (MN) $583M · 20,332
- IBEW Local 613 Defined Contribution Pension Plan (GA) $582M · 5,837
Frequently Asked Questions
How much money is in the Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund? ▼
What type of plan is Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund? ▼
Who sponsors the Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund? ▼
How did Iron Workers' Mid-America Supplemental Monthly Annuity (Sma) Fund perform in 2022? ▼
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.
Read our methodology - how this data is sourced, computed, and verified.
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.