401(k) · DOL Form 5500 · 2023
Knife River Corporation 401(k) Retirement Plan
Data updated 2026-05-15
- $741M
- Total assets
- 5,269
- Participants
- 98th
- Percentile by assets
- $140,679
- Avg per participant
Sponsored by Knife River Corporation · North Dakota · Construction
What the 2023 filing shows
Knife River Corporation 401(k) Retirement Plan holds $741M for 5,269 participants - about $140,679 per participant, in the top 5% of all filed plans by assets.
- $741M
- total plan assets (2023 EOY)
- 5,269
- covered participants
- 98th
- percentile by assets (of 126,618 plans)
- $140,679
- avg assets per participant
401(k) · DOL Form 5500 · 2023
What the Filing Says About Knife River Corporation 401(k) Retirement Plan
Knife River Corporation 401(k) Retirement Plan is a 401(k) retirement plan sponsored by Knife River Corporation, headquartered in North Dakota. According to the U.S. Department of Labor's 2023 Form 5500 filing, the plan reports $741M in total end-of-year assets and covers 5,269 participants across the Construction industry. The sponsor's EIN on file with the U.S. Department of Labor is 921008893, and the plan has been effective since 1984-01-01. Its filing status is currently FILING RECEIVED.
Year over year, total assets moved from N/A at the beginning of 2023 to $741M at year-end. Net assets (after liabilities) closed the year at $741M, with reported net income of $103M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 1 prior plan-year filing from the same sponsor shown below.
Across the 2 plan years Knife River Corporation has on file with PlainRetire (2023-2024), sponsor-wide plan assets have moved from $768M to $881M, a gain of 14.8%, while reported participants moved from 5,300 to 5,351 (+1.0%). Year-by-year, sponsor-wide filings show: 2023 - $768M in assets across 2 plans covering 5,300 participants; 2024 - $881M in assets across 2 plans covering 5,351 participants.
By assets, Knife River Corporation 401(k) Retirement Plan outranks 98% of the 126,618 plans that filed a Form 5500 for the 2023 plan year, and holds roughly 7.4x the national average plan size of $100M and 730 average participants.
Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows, a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.
How the percentile is calculated: we count every plan that filed a 2023 Form 5500 with a reported end-of-year asset figure (126,618 plans), rank Knife River Corporation 401(k) Retirement Plan against all of them by total assets, and report the share of those plans it outranks. A plan reporting no asset figure for the year is excluded from the ranking rather than assumed to be zero.
Financial Summary (2023)
| Total Assets (Beginning of Year) | N/A |
|---|---|
| Total Assets (End of Year) | $741M |
| Net Assets (End of Year) | $741M |
| Net Income | $103M |
| Plan Type | 401(k) |
| Employer EIN | 921008893 |
| Plan Effective Date | 1984-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Knife River Corporation)
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2023 | 2 | 5,300 | $768M |
| 2024 | 2 | 5,351 | $881M |
Nearby 401(k) Plans in North Dakota
Peer 401(k) plans, same state, same plan type, ranked by total assets.
- Sanford Retirement Savings Plan $3.1B · 30,495
- Mdu Resources Group, Inc. 401(k) Retirement Plan $830M · 8,551
- Dakotas Areawide IBEW-NECA Savings and Retirement Plan $521M · 3,853
- Eide Bailly LLP 401(k) Profit Sharing Plan $513M · 2,920
- Offutt Companies 401(k) Savings Plan $501M · 4,790
Frequently Asked Questions
How much money is in the Knife River Corporation 401(k) Retirement Plan? ▼
What type of plan is Knife River Corporation 401(k) Retirement Plan? ▼
Who sponsors the Knife River Corporation 401(k) Retirement Plan? ▼
How did Knife River Corporation 401(k) Retirement Plan perform in 2023? ▼
What this filing means
Ways to act on Knife River Corporation 401(k) Retirement Plan's numbers.
- By total assets, Knife River Corporation 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
- Knife River Corporation's sponsor-wide assets have grown 14.8% since 2023 across 2 plan years on file. More Construction plans
- A 401(k) plan works differently from other retirement plan types, understand the structural differences before comparing. Compare plan types
Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.
Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 921008893.
Reference: IRS Publication 560, Retirement Plans for Small Business, contribution-limit rules.
Reference: IRS Publication 590-B, Distributions from IRAs, RMD rules under SECURE Act 2.0.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainRetire is rendered directly from the Department of Labor's Form 5500 annual return filings, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-15.