401(k) · DOL Form 5500 · 2022

Mdu Resources Group, Inc. 401(k) Plan

Data updated 2026-08-11

$1.3B
Total assets
8,525
Participants
99th
Percentile by assets
$154,987
Avg per participant
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Official DOL plan name: Mdu Resources Group, Inc. 401(k) Retirement Plan · Sponsored by Mdu Resources Group, Inc. · North Dakota · Utilities

$1.3B in assets, 8,525 participants

Mdu Resources Group, Inc.'s Mdu Resources Group, Inc. 401(k) Retirement Plan reported $1.3B in total assets and 8,525 participants in its 2022 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 139,126 plans)
  • #679 in Utilities (738 peers)

Coverage in North Dakota

Mdu Resources Group, Inc. 401(k) Retirement Plan covers 8,525 participants in North Dakota, 17x the typical North Dakota plan (state average ~504 per filing). Assets: $1.3B.

$1.3B
total plan assets (2022 EOY)
8,525
covered participants
99th
percentile by assets (of 139,126 plans)
$154,987
avg assets per participant

The plan reported a net loss of $227M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

Where Mdu Resources Group, Inc. 401(k) Retirement Plan sits by total assets

Mdu Resources Group, Inc. 401(k) Retirement Plan vs every filed plan by assets

End-of-year total assets · plan year 2022 · DOL Form 5500

$1,321,268,405 Top 1% higher than 99% of 139,123 filed plans

This plan $0 $2,010,000,000 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 2022

State
North Dakota
Industry
Utilities

Participants vs North Dakota filers

In North Dakota, the average filing covers about 504 participants across 359 plans. Mdu Resources Group, Inc. 401(k) Retirement Plan reports 8,525 participants - 17x that state average ($1.3B EOY assets).

North Dakota filing particulars

Total Assets (Beginning of Year)$1.5B
Net Assets (End of Year)$1.3B
Net Income-$227M
Employer EIN301133956
Plan Effective Date1984-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Mdu Resources Group, Inc.)

$0.8B$1B$1.2B$1.4B$1.6B 202220232024 $1.42B $0.87B ▼ -38.7%
Total plan assets by year, all Mdu Resources Group, Inc. plans on file
Year Plans Participants Total Assets
2022 2 8,676 $1.4B
2023 2 8,688 $928M
2024 2 3,583 $865M

Nearby 401(k) Plans in North Dakota

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

Mdu Resources Group, Inc. 401(k) Retirement Plan vs. nearby 401(k) plans in North Dakota, assets vs. participants Scatter plot of 6 data points. 010000200003000040000 00.511.522.53 Total assets ($B) Participants Mdu Resources Group,…, Total assets ($B): 1.321268405 · Participants: 8525Mdu Resources Group,…Sanford Retirement S…, Total assets ($B): 2.448470251 · Participants: 30145Sanford Retirement S…Dakotas Areawide IBE…, Total assets ($B): 0.446081759 · Participants: 3784Dakotas Areawide IBE…Eide Bailly LLP 401(…, Total assets ($B): 0.410790544 · Participants: 2612Eide Bailly LLP 401(…Offutt Companies 401…, Total assets ($B): 0.402778064 · Participants: 5088Offutt Companies 401…Altru Health System …, Total assets ($B): 0.398838355 · Participants: 3100Altru Health System …
Mdu Resources Group, Inc. 401(k) Retirement Plan vs. nearby 401(k) plans in North Dakota, assets vs. participants
Compare Mdu Resources Group, Inc. 401(k) Retirem… side-by-side with 3 peers →

Scale composition for Mdu Resources Group, Inc. 401(k) Retirement Plan

Mdu Resources Group, Inc. 401(k) Retirement Plan reports $1.3B in end-of-year assets across 8,525 participants (0.011% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.009% of 93,925,755 covered participants) - about $154,987 per participant (1.1x the national average assets-per-participant) . Net income for plan year 2022 was -$227M.

This plan identity (EIN 301133956, plan #004) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $1.3B to $776M (-41.3%) while covered participants moved from 8,525 to 3,465 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 8,525 $1.3B This page
2023 8,551 $830M Open filing
2024 · index core 3,465 $776M Open filing

The same sponsor also keeps 1 other index-core plan on PlainRetire:

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Mdu Resources Group, Inc. 401(k) Retirement Plan by total assets, not by location.

Frequently Asked Questions

How did Mdu Resources Group, Inc. 401(k) Retirement Plan assets move in 2022? ▼
Mdu Resources Group, Inc. 401(k) Retirement Plan pulled back noticeably - down 14.7% during 2022, from $1.5B to $1.3B. Reported net income was -$227M.
How have Mdu Resources Group, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Mdu Resources Group, Inc.'s sponsor-wide assets declined 39.0%, from $1.4B to $865M.
Where does Mdu Resources Group, Inc. 401(k) Retirement Plan rank by assets among Form 5500 filers? ▼
Mdu Resources Group, Inc. 401(k) Retirement Plan ranks in the 99th percentile by end-of-year assets among 139,126 plans that reported assets for plan year 2022 (among the largest 1% of all filed plans).
Which 401(k) plans are similar in size to Mdu Resources Group, Inc. 401(k) Retirement Plan? ▼
Among 401(k) plans in other states, the closest by assets is Cleveland-Cliffs Steel LLC Hourly 401(k) Plan in IL ($1.3B, 12,117 participants).

Next read for Mdu Resources Group, Inc. 401(k) Retirem…

Filing takeaways

Ways to act on Mdu Resources Group, Inc. 401(k) Retirement Plan's numbers.

  • By total assets, Mdu Resources Group, Inc. 401(k) Retirement Plan 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 North Dakota. Compare plans
  • Mdu Resources Group, Inc.'s sponsor-wide assets have declined 39.0% since 2022 across 3 plan years on file. More Utilities plans

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 301133956.

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.