401(k) · DOL Form 5500 · 2024

Trustees of Pipe Fitters Association Local 597 401(k) Plan

Data updated 2026-07-24

$2.5B
Total assets: 9,298
Participants: 99th
Percentile by assets: $267,894
Avg per participant

Official DOL plan name: Pipe Fitters Association L.U. 597, U.a. 401(k) Pla · Sponsored by Trustees of Pipe Fitters Association Local 597 · Illinois · Construction

$2.5B in assets, 9,298 participants

Trustees of Pipe Fitters Association Local 597's Pipe Fitters Association L.U. 597, U.a. 401(k) Pla reported $2.5B in total assets and 9,298 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.

99th percentile by assets (of 116,472 plans)

Coverage in Illinois

Pipe Fitters Association L.U. 597, U.a. 401(k) Pla covers 9,298 participants in Illinois, 12x the typical Illinois plan (state average ~768 per filing). Assets: $2.5B.

$2.5B
total plan assets (2024 EOY): 9,298
covered participants: 99th
percentile by assets (of 116,472 plans): $267,894
avg assets per participant

Pipe Fitters Association L.U. 597, U.a. 401(k) Pla end-of-year assets rose from $2.2B in the plan year 2023 filing to $2.5B in the plan year 2024 filing.
Pipe Fitters Association L.U. 597, U.a. 401(k) Pla reported net income fell from $352M in the plan year 2023 filing to $335M in the plan year 2024 filing.
Pipe Fitters Association L.U. 597, U.a. 401(k) Pla reported participants rose from 9,128 in the plan year 2023 filing to 9,298 in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Illinois

Industry

Construction

Participants vs Illinois filers

In Illinois, the average filing covers about 768 participants across 5,440 plans. Pipe Fitters Association L.U. 597, U.a. 401(k) Pla reports 9,298 participants - 12x that state average ($2.5B EOY assets).

Illinois filing particulars

Total Assets (Beginning of Year)	$2.2B
Net Assets (End of Year)	$2.5B
Net Income	$335M
Employer EIN	361820310
Plan Effective Date	1999-01-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Trustees of Pipe Fitters Association Local 597)

Total plan assets by year, all Trustees of Pipe Fitters Association Local 597 plans on file

Year	Plans	Participants	Total Assets
2022	1	9,124	$1.8B
2023	1	9,128	$2.2B
2024	1	9,298	$2.5B

Nearby 401(k) Plans in Illinois

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

Pipe Fitters Association L.U. 597, U.a. 401(k) Pla vs. nearby 401(k) plans in Illinois, assets vs. participants

Accenture United States 401(k) Match and Savings Plan $21.3B · 66,965
State Farm 401(k) Savings Plan $19.0B · 63,297
United Airlines Pilot Retirement Account Plan $16.8B · 16,659
Abbott Laboratories Stock Retirement Plan $15.8B · 38,229
Walgreens Retirement Savings Plan $14.5B · 233,635

Compare Pipe Fitters Association L.U. 597, U.a. … side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Pipe Fitters Association L.U. 597, U.a. 401(k) Pla by total assets, not by location.

Amentum 401(k) Retirement Plan (VA) $2.5B · 31,017
Triad 401(k) Retirement Plan (NM) $2.5B · 11,744
Finra Savings Plus Plan (DC) $2.5B · 4,201
Nnpp Contractor Savings Plan (PA) $2.5B · 8,361

Frequently Asked Questions

How did Pipe Fitters Association L.U. 597, U.a. 401(k) Pla assets move in 2024? ▼

Pipe Fitters Association L.U. 597, U.a. 401(k) Pla grew sharply - up 15.6% during 2024, from $2.2B to $2.5B. Reported net income was $335M.

How have Trustees of Pipe Fitters Association Local 597 plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Trustees of Pipe Fitters Association Local 597's sponsor-wide assets grew 38.2%, from $1.8B to $2.5B.

Where does Pipe Fitters Association L.U. 597, U.a. 401(k) Pla rank by assets among Form 5500 filers? ▼

Pipe Fitters Association L.U. 597, U.a. 401(k) Pla ranks in the 99th percentile by end-of-year assets among 116,472 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 Pipe Fitters Association L.U. 597, U.a. 401(k) Pla? ▼

Among 401(k) plans in other states, the closest by assets is Amentum 401(k) Retirement Plan in VA ($2.5B, 31,017 participants).

Next read for Pipe Fitters Association L.U. 597, U.a. …

Filing takeaways

Ways to act on Pipe Fitters Association L.U. 597, U.a. 401(k) Pla's numbers.

By total assets, Pipe Fitters Association L.U. 597, U.a. 401(k) Pla ranks among the largest 1% of all filed plans. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in Illinois. Compare plans
Trustees of Pipe Fitters Association Local 597's sponsor-wide assets have grown 38.2% since 2022 across 3 plan years on file. More Construction plans

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 361820310.

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.