Plan Ledger DOL Form 5500 · updated monthly

Mdu Resources Group, Inc.401(k) + ESOP (KSOP)

MDU RESOURCES GROUP, INC. 401(K) RETIREMENT PLAN · BISMARCK, ND · plan year 2022

Reported admin expense ratio · 2022
0.03%

Peer grade: B+ · admin costs + employer contributions vs same-size plans · how grading works

Mdu Resources Group, Inc. reported $449,494 in plan administrative expenses for 2022: 0.03% of average plan assets, below the peer median. Employer contributions averaged $5,858 per active participant. This ratio covers administrative expenses reported on the plan's Schedule H only; fund-level expense ratios are not included in public structured data — see methodology.

Across the 3 years on file its reported administrative ratio rose from 0.03% to 0.07%. The plan sits in the over $1B size bracket, benchmarked here against 1,066 comparable plans and shown alongside other utilities employers. By assets it is the 2nd-largest of 279 plans among North Dakota employers on file, and the 37th of 412 in utilities. In 2022, employees put in $1.29 for every $1.00 the employer contributed.

Plan summary
Net assets, end of year$1,321,268,405
Participants with balances11,064
Active participants8,551
Employer contributions$50,095,156
Employee contributions$64,574,223
Employer contribution per active participant$5,858
Average account balance$119,420
Benefits paid to participants$115,443,324
Plan auditUnmodified (clean) audit opinion
Plan history4
Yearassets · accounts · employer contribution
2025$867.1M · 2,614 accts · $19.3M emplr
2024$775.6M · 2,539 accts · $20.0M emplr
2023$829.9M · 4,226 accts · $28.1M emplr
2022$1.3B · 11,064 accts · $50.1M emplr
Administrative expenses, itemized · 2022
Recordkeeping & contract admin$421,642
Professional / advisory$27,852
Total administrative$449,494
The Mdu Resources Group, Inc. 401(k) match · 2022
Employer contribution per active participant$5,858
Median for plans this size$4,897
2025$9,201 per active participant
2024$9,678 per active participant
2023$8,096 per active participant
2022$5,858 per active participant

Mdu Resources Group, Inc.'s 2022 employer contribution ran above the $4,897 median for plans its size. Filings report dollars actually contributed, not the match formula; the formula itself (for example, 50% of the first 6% of pay) lives in the plan's summary plan description from HR.

What these fees cost you

Annual cost at the plan's reported 2022 administrative ratio, against the median plan its size; fund expense ratios are extra. Compare any plan.

Recordkeeper by year3
2025Principal
2024Principal
2023Principal

Looking for an account from a past job here? How to find an old 401(k).

Administrative cost history4
2025$595,024 · 0.07%
2024$592,317 · 0.07%
2023$431,171 · 0.04%
2022$449,494 · 0.03%
Same employer
Similar plansUtilities · North Dakota
Puget Sound Energy, Inc. WA$1.3B · 0.01%
Atmos Energy Corporation TX$1.1B · 0.03%
NV Energy, Inc. NV$1.1B · 0.07%

Why are you looking at this plan?

Compare

Source: U.S. Department of Labor, Form 5500 series, EIN 301133956 · Verify on EFAST2 · Amounts are as reported by the plan sponsor for the plan year shown.