Knife River 401(k) and pension plans

Knife River Corporation, Bismarck, ND. EIN 92-1008893. Annual reports 2009–2025.

Knife River Corporation has 2 active retirement plans on file. The largest is the Knife River Corporation 401(k) Retirement Plan, with 8,126 participants and $964 million in assets in 2025. Principal has been its recordkeeper since 2023.

Active plans: 2
Participants: 8,323
Plan assets: $989 million
401(k) recordkeeper: Principal
Plans on file: 2
Industry: Construction

All 2 plans

Active plans first

Knife River Corporation 401(k) Retirement Plan

401(k) with ESOPActive

Active. The plan filed its annual report for the 2025 plan year.

Plan number: 001Employer EIN 92-1008893
Participants (2025): 8,126
Net assets (2025): $964 million
Recordkeeper: Principal2023–2025
Plan administrator: Knife River Corporation Employee Benefits Committee
1150 West Century Avenue
Bismarck, ND 58506
(701) 530-1400As filed for 2025
In effect since: January 1, 1984

Year by year, 2023 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	8,126	$964 million	Principal
2024	7,242	$856 million	Principal
2023	6,996	$741 million	Principal

Knife River Corporation Salaried Employees' Pension Plan

Pension (defined benefit), frozenActive

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 004Employer EIN 92-1008893
Participants (2024): 197
Net assets (2024): $24.9 million
Administered by: Principal2020–2024
Plan administrator: Knife River Corporation Employee Benefits Committee
1150 West Century Avenue
Bismarck, ND 58506
(701) 530-1400As filed for 2024
In effect since: January 1, 1979

Earlier plan names: Knife River Corporation Salaried Employees Pension Plan.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	197	$24.9 million	Principal
2023	202	$26.6 million	Principal
2022	202	$24.5 million	Principal
2021	210	$32.6 million	Principal
2020	215	$33.9 million	Principal
2019	216	$32.4 million	not listed
2018	221	$27.0 million	not listed
2017	263	$31.6 million	not listed
2016	272	$29.3 million	not listed
2015	276	$29.4 million	not listed
2014	282	$32.7 million	not listed
2013	287	$31.7 million	not listed
2012	298	$29.3 million	not listed
2011	303	$27.6 million	not listed
2010	309	$27.3 million	not listed
2009	314	$22.9 million	not listed

If you had money in one of these plans

Call Principal (principal.com), which runs the Knife River Corporation 401(k) Retirement Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((701) 530-1400). That number was filed for 2025; ask for the benefits or retirement plan office.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.

All 2 plans

Knife River Corporation 401(k) Retirement Plan

Knife River Corporation Salaried Employees' Pension Plan

If you had money in one of these plans

What these numbers are

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