Defined Benefit (Pension) · DOL Form 5500 · 2022

Trustees of W. States Insulators & Allied Workers Pension Fund Pension Plan

Data updated 2026-07-24

$427M
Total assets
3,332
Participants
98th
Percentile by assets
$128,026
Avg per participant

Official DOL plan name: Western States Insulators and Allied Workers' Pension Plan · Sponsored by Trustees of W. States Insulators & Allied Workers Pension Fund · California · Construction

$427M in assets, 3,332 participants

Trustees of W. States Insulators & Allied Workers Pension Fund's Western States Insulators and Allied Workers' Pension Plan reported $427M in total assets and 3,332 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

Western States Insulators and Allied Workers' Pension Plan holds $427M for 3,332 participants - about $128,026 per participant, in the top 5% of all filed plans by assets, down 12.0% over the 2022 plan year.

$427M
total plan assets (2022 EOY)
3,332
covered participants
98th
percentile by assets (of 139,258 plans)
$128,026
avg assets per participant

The plan reported a net loss of $58M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

State
Industry
Construction

Defined Benefit (Pension) · DOL Form 5500 · 2022

What the Filing Says About Western States Insulators and Allied Workers' Pension Plan

Western States Insulators and Allied Workers' Pension Plan is a Defined Benefit (Pension) retirement plan sponsored by Trustees of W. States Insulators & Allied Workers Pension Fund, headquartered in California. According to the U.S. Department of Labor's 2022 Form 5500 filing, the plan reports $427M in total end-of-year assets and covers 3,332 participants across the Construction industry. The sponsor's EIN on file with the U.S. Department of Labor is 510155190, and the plan has been effective since 1959-11-20. Its filing status is currently FILING RECEIVED.

Year over year, total assets pulled back noticeably from $485M at the beginning of 2022 to $427M at year-end - down 12.0%. Net assets (after liabilities) closed the year at $426M, with reported net income of -$58M 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 W. States Insulators & Allied Workers Pension Fund has on file with PlainRetire (2022-2024), sponsor-wide plan assets have moved from $810M to $979M, a gain of 20.8%, while reported participants moved from 9,766 to 9,853 (+0.9%). The strongest year on file by total sponsor assets was 2024 at $979M; the softest was 2022 at $810M. Year-by-year, sponsor-wide filings show: 2022 - $810M in assets across 2 plans covering 9,766 participants; 2023 - $912M in assets across 2 plans covering 9,793 participants; 2024 - $979M in assets across 2 plans covering 9,853 participants.

By assets, Western States Insulators and Allied Workers' Pension Plan outranks 98% of the 139,258 plans that filed a Form 5500 for the 2022 plan year, and holds roughly 4.3x 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 Western States Insulators and Allied Workers' Pension Plan 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)$485M
Total Assets (End of Year)$427M
Net Assets (End of Year)$426M
Net Income-$58M
Plan TypeDefined Benefit (Pension)
Employer EIN510155190
Plan Effective Date1959-11-20
Filing StatusFILING RECEIVED

Sponsor Plan History (Trustees of W. States Insulators & Allied Workers Pension Fund)

$700M$800M$900M$1,000M 202220232024 $810M $979M ▲ +20.8%
Total plan assets by year, all Trustees of W. States Insulators & Allied Workers Pension Fund 401(k) plans on file
Year Plans Participants Total Assets
2022 2 9,766 $810M
2023 2 9,793 $912M
2024 2 9,853 $979M

Nearby Defined Benefit (Pension) Plans in California

Peer Defined Benefit (Pension) plans, same state, same plan type, ranked by total assets.

Western States Insulators and Allied Workers' Pension Plan vs. nearby Defined Benefit (Pension) plans in California, assets vs. participants

Western States Insulators and Allied Workers' Pension Plan vs. nearby Defined Benefit (Pension) plans in California, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000 -10010203040 Total assets ($B) Participants Western States Insul…Kaiser Permanente Re…Pacific Gas and Elec…Retirement Plan for …Disney Salaried Pens…Wells Fargo & Compan…
Western States Insulators and Allied Workers' Pension Plan vs. nearby Defined Benefit (Pension) plans in California, assets vs. participants

Similar-Sized Defined Benefit (Pension) Plans Nationally

Defined Benefit (Pension) plans in other states closest to Western States Insulators and Allied Workers' Pension Plan by total assets, not by location.

Frequently Asked Questions

How much money is in the Western States Insulators and Allied Workers' Pension Plan?
As of the 2022 Form 5500 filing, Western States Insulators and Allied Workers' Pension Plan holds $427M in total assets with 3,332 participants. It is sponsored by Trustees of W. States Insulators & Allied Workers Pension Fund.
What type of plan is Western States Insulators and Allied Workers' Pension Plan?
Western States Insulators and Allied Workers' Pension Plan is a Defined Benefit (Pension) plan. It has been effective since 1959-11-20. The plan is filed with the U.S. Department of Labor under EIN 510155190.
Who sponsors the Western States Insulators and Allied Workers' Pension Plan?
Western States Insulators and Allied Workers' Pension Plan is sponsored by Trustees of W. States Insulators & Allied Workers Pension Fund, located in California. The sponsor's EIN is 510155190 and the plan operates in the Construction industry.
How did Western States Insulators and Allied Workers' Pension Plan perform in 2022?
Western States Insulators and Allied Workers' Pension Plan pulled back noticeably - down 12.0% during 2022, moving from $485M to $427M in total assets. Net income was -$58M.

What this filing means

Ways to act on Western States Insulators and Allied Workers' Pension Plan's numbers.

  • By total assets, Western States Insulators and Allied Workers' Pension Plan ranks in the top 5% of all filed plans by assets. See the largest plans
  • Compare it side-by-side against 3 similar Defined Benefit (Pension) plans in California. Compare plans
  • Trustees of W. States Insulators & Allied Workers Pension Fund's sponsor-wide assets have grown 20.8% since 2022 across 3 plan years on file. More Construction plans
  • A Defined Benefit (Pension) 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 510155190.

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.