Defined Benefit (Pension) · DOL Form 5500 · 2024

Board of Trustees of the I.a.M. National Pension Fund Pension Plan

Data updated 2026-08-25

$15.0B
Total assets Mega-plan scale
102,493
Participants Very large workforce
100th
Percentile by assets National rank
$146,481
Avg per participant Above avg balance/head
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Official DOL plan name: Iam National Pension Fund · Sponsored by Board of Trustees of the I.a.M. National Pension Fund · District of Columbia · Manufacturing

$15.0B in assets, 102,493 participants

Board of Trustees of the I.a.M. National Pension Fund's Iam National Pension Fund reported $15.0B in total assets and 102,493 participants in its 2024 DOL Form 5500 filing, ranking in the 100th 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.

  • #17,749 in Manufacturing (17,777 peers)

Coverage in District of Columbia

Iam National Pension Fund covers 102,493 participants in District of Columbia, 70x the typical District of Columbia plan (state average ~1,456 per filing). Assets: $15.0B.

#17,749
in Manufacturing (17,777 peers)
+5.0%
assets growth YoY
151×
vs typical plan assets (national mean)

Iam National Pension Fund's outsized position by total assets

Iam National Pension Fund vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$15,013,264,530 Highest reported value at or above every one of 123,620 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024

Iam National Pension Fund's mega-plan peer group by participant headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Iam National Pension Fund is a mega filing (102,493 participants), the rightmost band on the breakdown.

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Iam National Pension Fund reported net income rose from $388M in the plan year 2023 filing to $799M in the plan year 2024 filing.
  • Iam National Pension Fund reported participants rose from 92,151 in the plan year 2023 filing to 102,493 in the plan year 2024 filing.
  • Iam National Pension Fund end-of-year assets rose from $14.3B in the plan year 2023 filing to $15.0B in the plan year 2024 filing.

See the national 2023→2024 release diff →

Form 5500 schedule snapshot

Filing strip 516031295 · Board of Trustees of the I.a.M. National Pension Fund PY 2024 · Defined Benefit (Pension)

Iam National Pension Fund · $15.0B · 102,493 · 100th

  • PHOTO $15.0B
  • IND 102,493
  • EOY 100th
  • 5500 Defined Benefit (Pension)
  • ASSETS near The Southern Company Pension Plan
  • PCT ind #17749

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Manufacturing retirement plans → · Plans in District of Columbia →

Iam National Pension Fund in the asset neighbourhood

Consolidated Edison Retirement PlanConsolidated Edison Retireme…$15.6BThe Boeing Company Employee Retirement PlanThe Boeing Company Employee …$15.4BThe Southern Company Pension PlanThe Southern Company Pension…$15.3BIam National Pension Fund$15.0BTruist Financial Corporation Pension PlanTruist Financial Corporation…$14.7B
End-of-year total assets ($B) among Iam National Pension Fund and nearest nationwide Defined Benefit (Pension) peers. Source: DOL Form 5500 plan year 2024.

District of Columbia filing particulars

Total Assets (Beginning of Year)$14.3B
Net Assets (End of Year)$14.7B
Net Income$799M
Employer EIN516031295
Plan Effective Date1991-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Board of Trustees of the I.a.M. National Pension Fund)

Sponsor-wide plan assets over time

All Board of Trustees of the I.a.M. National Pension Fund plans reported in each filing year

Latest sponsor-wide plan assets
$15.0B 8.77256732426121% vs 2022
2024 filing year
$13.5B$14B$14.5B$15B$15.5B 202220232024 $13.8B $15B ▲ +8.8%
Year Plans Participants Total Assets
2022 1 94,512 $13.8B
2023 1 92,151 $14.3B
2024 1 102,493 $15.0B

Nearby Defined Benefit (Pension) Plans in District of Columbia

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

Iam National Pension Fund vs. nearby Defined Benefit (Pension) plans in District of Columbia, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000 0102030 Total assets ($B) Participants Iam National Pension Fund, Total assets ($B): 15.01326453 · Participants: 102493Iam National Pension FundCentral Pension Fund of the Iuoe & Participating Employers, Total assets ($B): 27.435957137 · Participants: 103525Central Pension Fund of the Iuoe & Participating EmployersUnited Mine Workers of America 1974 Pension Plan, Total assets ($B): 3.795820295 · Participants: 58United Mine Workers of America 1974 Pension PlanLiuna Staff and Affiliates Pension Fund, Total assets ($B): 1.922502172 · Participants: 3559Liuna Staff and Affiliates Pension FundBricklayers & Trowel Trades International Pension Fund, Total assets ($B): 1.912910704 · Participants: 27474Bricklayers & Trowel Trades International Pension FundDanaher Corporation & Subsidiaries Pension Plan, Total assets ($B): 1.903485871 · Participants: 2599Danaher Corporation & Subsidiaries Pension Plan
Iam National Pension Fund vs. nearby Defined Benefit (Pension) plans in District of Columbia, assets vs. participants
Compare Iam National Pension Fund side-by-side with 3 peers →

Scale composition for Iam National Pension Fund

Iam National Pension Fund reports $15.0B in end-of-year assets across 102,493 participants (0.12% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.11% of 93,925,755 covered participants) - about $146,481 per participant (1.1x the national average assets-per-participant) . Net income for plan year 2024 was $799M.

This plan identity (EIN 516031295, plan #002) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $13.8B to $15.0B (+8.8%) while covered participants moved from 94,512 to 102,493 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 94,512 $13.8B Open filing
2023 92,151 $14.3B Open filing
2024 · index core 102,493 $15.0B This page

Iam National Pension Fund's out-of-state Defined Benefit (Pension) peers by assets and headcount

Outside District of Columbia, the nearest Defined Benefit (Pension) by assets is The Southern Company Pension Plan in GA ($15.3B); by covered participants it is AT&T Pension Benefit Plan in TX (100,400 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($15.0B here).

Similar participant headcount

Nearest other-state filings by covered participants (102,493 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Iam National Pension Fund assets move in 2024? ▼
Iam National Pension Fund edged up modestly - up 5.0% during 2024, from $14.3B to $15.0B. Reported net income was $799M.
How have Board of Trustees of the I.a.M. National Pension Fund plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Board of Trustees of the I.a.M. National Pension Fund's sponsor-wide assets grew 8.8%, from $13.8B to $15.0B.
Where does Iam National Pension Fund rank by assets among Form 5500 filers? ▼
Iam National Pension Fund ranks in the 100th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (among the largest 1% of all filed plans).
Which Defined Benefit (Pension) plans are similar in size to Iam National Pension Fund? ▼
Among Defined Benefit (Pension) plans in other states, the closest by assets is The Southern Company Pension Plan in GA ($15.3B, 25,843 participants).
Which Defined Benefit (Pension) plans cover a similar participant headcount to Iam National Pension Fund? ▼
Among Defined Benefit (Pension) plans in other states, the closest by covered participants is AT&T Pension Benefit Plan in TX (100,400 participants, $28.3B in assets).

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 516031295.

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.