401(k) · DOL Form 5500 · 2024

Mdu Resources Group, Inc. 401(k) Plan

Data updated 2026-08-11

$776M
Total assets: 3,465
Participants: 98th
Percentile by assets: $223,824
Avg per participant

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.

98th percentile by assets (of 123,622 plans)
#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.

$776M
total plan assets (2024 EOY): 3,465
covered participants: 98th
percentile by assets (of 123,622 plans): $223,824
avg assets per participant

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 2024 · DOL Form 5500

$775,551,136 Top 2% higher than 98% of 123,620 filed plans

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 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 →

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 3,465 participants - 6.9x that state average ($776M EOY assets).

North Dakota filing particulars

Total Assets (Beginning of Year)	$830M
Net Assets (End of Year)	$776M
Net Income	$126M
Employer EIN	301133956
Plan Effective Date	1984-01-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Mdu Resources Group, Inc.)

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

Sanford Retirement Savings Plan $3.6B · 31,958
Knife River Corporation 401(k) Retirement Plan $856M · 5,327
Eide Bailly LLP 401(k) Profit Sharing Plan $615M · 2,920
Offutt Companies 401(k) Savings Plan $592M · 5,199
Dakotas Areawide IBEW-NECA Savings and Retirement Plan $583M · 4,160

Compare Mdu Resources Group, Inc. 401(k) Retirem… side-by-side with 3 peers →

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.

Averitt Express, Inc. Profit Sharing and 401(k) Plan (TN) $775M · 8,647
Trc 401(k) Retirement and Savings Plan (CT) $776M · 6,805
Kph Healthcare Services, Inc. Employee Stock Ownership and 401(k) Plan (NY) $778M · 3,900
North Memorial Health (MN) $778M · 6,766

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).

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 in the top 5% of all filed plans by assets. 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 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 301133956.