401(k) · DOL Form 5500 · 2024

Mdu Resources Group, Inc. 401(k) Plan

Data updated 2026-08-25

$776M
Total assets Above avg plan size
3,465
Participants Above avg headcount
98th
Percentile by assets National rank
$223,824
Avg per participant Above avg balance/head
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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

$776M in assets, 3,465 participants

Mdu Resources Group, Inc.'s Mdu Resources Group, Inc. 401(k) Retirement Plan reported $776M in total assets and 3,465 participants in its 2024 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.

  • #621 in Utilities (732 peers)

Coverage in North Dakota

Mdu Resources Group, Inc. 401(k) Retirement Plan covers 3,465 participants in North Dakota, 6.9x the typical North Dakota plan (state average ~504 per filing). Assets: $776M.

#621
in Utilities (732 peers)
-6.5%
assets change YoY
7.8×
vs typical plan assets (national mean)

Mdu Resources Group, Inc. 401(k) Retirement Plan's outsized position by total assets

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

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

$775,551,136 Top 2% higher than 98% 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

Mdu Resources Group, Inc. 401(k) Retirement Plan's large-plan peer group by participant headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Mdu Resources Group, Inc. 401(k) Retirement Plan lands in the large band (3,465 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Mdu Resources Group, Inc. 401(k) Retirement Plan reported participants fell from 8,551 in the plan year 2023 filing to 3,465 in the plan year 2024 filing.
  • Mdu Resources Group, Inc. 401(k) Retirement Plan reported net income fell from $147M in the plan year 2023 filing to $126M in the plan year 2024 filing.
  • Mdu Resources Group, Inc. 401(k) Retirement Plan end-of-year assets fell from $830M in the plan year 2023 filing to $776M in the plan year 2024 filing.

See the national 2023→2024 release diff →

Published 5500 schedule card

Filing strip 301133956 · Mdu Resources Group, Inc. PY 2024 · 401(k)

Mdu Resources Group, Inc. 401(k) Retirement Plan · $776M · 3,465 · 98th

  • SCH $776M
  • SCH 3,465
  • SCH 98th
  • SCH 401(k)
  • SCH near Averitt Express, Inc. Profit Sharing and 401(k) Plan
  • SCH ind #621

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 Utilities retirement plans → · Plans in North Dakota →

Mdu Resources Group, Inc. 401(k) Retirement Plan in the asset neighbourhood

North Memorial Health$778MKph Healthcare Services, Inc. Employee Stock Ownership and 401(k) PlanKph Healthcare Services, Inc…$778MTrc 401(k) Retirement and Savings PlanTrc 401(k) Retirement and Sa…$776MMdu Resources Group, Inc. 401(k) Retirement PlanMdu Resources Group, Inc. 40…$776MAveritt Express, Inc. Profit Sharing and 401(k) PlanAveritt Express, Inc. Profit…$775M
End-of-year total assets ($M) among Mdu Resources Group, Inc. 401(k) Retirement Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

North Dakota filing particulars

Total Assets (Beginning of Year)$830M
Net Assets (End of Year)$776M
Net Income$126M
Employer EIN301133956
Plan Effective Date1984-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Mdu Resources Group, Inc.)

Sponsor-wide plan assets over time

All Mdu Resources Group, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$865M 39.040889270814255% vs 2022
2024 filing year
$0.8B$1B$1.2B$1.4B$1.6B 202220232024 $1.42B $0.87B ▼ -38.7%
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 01234 Total assets ($B) Participants Mdu Resources Group, Inc. 401(k) Retirement Plan, Total assets ($B): 0.775551136 · Participants: 3465Mdu Resources Group, Inc. 401(k) Retirement PlanSanford Retirement Savings Plan, Total assets ($B): 3.602462001 · Participants: 31958Sanford Retirement Savings PlanKnife River Corporation 401(k) Retirement Plan, Total assets ($B): 0.856387415 · Participants: 5327Knife River Corporation 401(k) Retirement PlanEide Bailly LLP 401(k) Profit Sharing Plan, Total assets ($B): 0.615317303 · Participants: 2920Eide Bailly LLP 401(k) Profit Sharing PlanOffutt Companies 401(k) Savings Plan, Total assets ($B): 0.591992052 · Participants: 5199Offutt Companies 401(k) Savings PlanDakotas Areawide IBEW-NECA Savings and Retirement Plan, Total assets ($B): 0.583155537 · Participants: 4160Dakotas Areawide IBEW-NECA Savings and Retirement Plan
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) Retirement Plan side-by-side with 3 peers →

Mdu Resources Group, Inc. 401(k) Retirement Plan's out-of-state 401(k) peers by assets and headcount

Outside North Dakota, the nearest 401(k) by assets is Averitt Express, Inc. Profit Sharing and 401(k) Plan in TN ($775M); by covered participants it is Fox Factory, Inc. 401(k) Profit Sharing Plan in GA (3,465 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($776M here).

Similar participant headcount

Nearest other-state filings by covered participants (3,465 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 Mdu Resources Group, Inc. 401(k) Retirement Plan assets move in 2024? ▼
Mdu Resources Group, Inc. 401(k) Retirement Plan pulled back noticeably - down 6.5% during 2024, from $830M to $776M. Reported net income was $126M.
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 98th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 5% of all filed plans by assets).
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 Averitt Express, Inc. Profit Sharing and 401(k) Plan in TN ($775M, 8,647 participants).
Which 401(k) plans cover a similar participant headcount to Mdu Resources Group, Inc. 401(k) Retirement Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Fox Factory, Inc. 401(k) Profit Sharing Plan in GA (3,465 participants, $84M 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 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.