Defined Benefit (Pension) · DOL Form 5500 · 2024

Trustees of the Intn'l Brotherhood of Boilermakers Iron Ship Builders, Pension Plan

Data updated 2026-08-11

$148M
Total assets: 202
Participants: 93rd
Percentile by assets: $730,657
Avg per participant

Official DOL plan name: International Brotherhood of Boilermakers Officers and Employees' Pension Plan · Sponsored by Trustees of the Intn'l Brotherhood of Boilermakers Iron Ship Builders, · Missouri · Manufacturing

$148M in assets, 202 participants

Trustees of the Intn'l Brotherhood of Boilermakers Iron Ship Builders,'s International Brotherhood of Boilermakers Officers and Employees' Pension Plan reported $148M in total assets and 202 participants in its 2024 DOL Form 5500 filing, ranking in the 93rd 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.

93rd percentile by assets (of 123,622 plans)
#15,862 in Manufacturing (17,777 peers)

Coverage in Missouri

International Brotherhood of Boilermakers Officers and Employees' Pension Plan covers 202 participants in Missouri, about 27% of the average Missouri filer (state average ~737 per filing). Assets: $148M.

$148M
total plan assets (2024 EOY): 202
covered participants: 93rd
percentile by assets (of 123,622 plans): $730,657
avg assets per participant

International Brotherhood of Boilermakers Officers and Employees' Pension Plan reported net income fell from $9M in the plan year 2023 filing to $8M in the plan year 2024 filing.
International Brotherhood of Boilermakers Officers and Employees' Pension Plan end-of-year assets rose from $140M in the plan year 2023 filing to $148M in the plan year 2024 filing.
International Brotherhood of Boilermakers Officers and Employees' Pension Plan reported participants fell from 209 in the plan year 2023 filing to 202 in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Missouri

Industry

Manufacturing

Participants vs Missouri filers

In Missouri, the average filing covers about 737 participants across 2,297 plans. International Brotherhood of Boilermakers Officers and Employees' Pension Plan reports 202 participants - about 27% of that state average ($148M EOY assets).

Missouri filing particulars

Total Assets (Beginning of Year)	$140M
Net Assets (End of Year)	$148M
Net Income	$8M
Employer EIN	486031851
Plan Effective Date	1951-01-16
Filing Status	FILING RECEIVED

Sponsor Plan History (Trustees of the Intn'l Brotherhood of Boilermakers Iron Ship Builders,)

Total plan assets by year, all Trustees of the Intn'l Brotherhood of Boilermakers Iron Ship Builders, plans on file

Year	Plans	Participants	Total Assets
2022	1	205	$131M
2023	1	209	$140M
2024	1	202	$148M

Nearby Defined Benefit (Pension) Plans in Missouri

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

International Brotherhood of Boilermakers Officers and Employees' Pension Plan vs. nearby Defined Benefit (Pension) plans in Missouri, assets vs. participants

Boilermaker-Blacksmith National Pension Trust $7.5B · 28,958
Ameren Retirement Plan $4.8B · 9,760
Co-Op Retirement Plan $3.5B · 15,151
Carpenters Pension Trust Fund of St. Louis $3.4B · 11,832
Emerson Electric Company Retirement Plan $3.3B · 2,467

Compare International Brotherhood of Boilermaker… side-by-side with 3 peers →

Similar-Sized Defined Benefit (Pension) Plans Nationally

Defined Benefit (Pension) plans in other states closest to International Brotherhood of Boilermakers Officers and Employees' Pension Plan by total assets, not by location.

Pension Plan for Employees of Southco, Inc. (PA) $148M · 192
Efw Inc. Consolidated Retirement Plan (TX) $148M · 252
Schaeffler Group USA Inc. Pension Plan (SC) $147M · 568
Major League Baseball Pension Plan for Non-Uniformed Personnel (PA) $147M · 527

Frequently Asked Questions

How did International Brotherhood of Boilermakers Officers and Employees' Pension Plan assets move in 2024? ▼

International Brotherhood of Boilermakers Officers and Employees' Pension Plan grew at a solid clip - up 5.4% during 2024, from $140M to $148M. Reported net income was $8M.

How have Trustees of the Intn'l Brotherhood of Boilermakers Iron Ship Builders, plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Trustees of the Intn'l Brotherhood of Boilermakers Iron Ship Builders,'s sponsor-wide assets grew 12.6%, from $131M to $148M.

Where does International Brotherhood of Boilermakers Officers and Employees' Pension Plan rank by assets among Form 5500 filers? ▼

International Brotherhood of Boilermakers Officers and Employees' Pension Plan ranks in the 93rd percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 10% of all filed plans by assets).

Which Defined Benefit (Pension) plans are similar in size to International Brotherhood of Boilermakers Officers and Employees' Pension Plan? ▼

Among Defined Benefit (Pension) plans in other states, the closest by assets is Pension Plan for Employees of Southco, Inc. in PA ($148M, 192 participants).

Next read for International Brotherhood of Boilermaker…

Filing takeaways

Ways to act on International Brotherhood of Boilermakers Officers and Employees' Pension Plan's numbers.

By total assets, International Brotherhood of Boilermakers Officers and Employees' Pension Plan ranks in the top 10% of all filed plans by assets. See the largest plans
Compare it side-by-side against 3 similar Defined Benefit (Pension) plans in Missouri. Compare plans
Trustees of the Intn'l Brotherhood of Boilermakers Iron Ship Builders,'s sponsor-wide assets have grown 12.6% since 2022 across 3 plan years on file. More Manufacturing 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 486031851.