Company Description
Knife River Corporation, together with its subsidiaries, provides aggregates-based construction materials and contracting services in the United States.
The company operates through West, Mountain, Central, and Energy Services segments. It mines, processes, and sells construction aggregates, including crushed stone and sand, and gravel; and produces and sells asphalt and ready-mix concrete.
The company also provides contracting services, such as heavy-civil construction, asphalt and concrete paving, and site development and grading.
In addition, it sells cement, merchandise, and other building materials and related services; and produces and supplies liquid asphalt for use in asphalt road construction.
The company sells its construction materials to public and private-sector customers comprising federal, state, and municipal governments; industrial, commercial, and residential developers, as well as other private parties; and provides its contracting services to public-sector customers for the development and servicing of highways, local roads, bridges, and other public-infrastructure projects.
Knife River Corporation was founded in 1917 and is headquartered in Bismarck, North Dakota.
| Country | United States |
| Founded | 1917 |
| Industry | Building Materials |
| Sector | Materials |
| Employees | 5,298 |
| CEO | Brian Gray |
Contact Details
Address: 1150 West Century Avenue, PO Box 5568 Bismarck, North Dakota 58506-5568 United States | |
| Phone | 701 530 1400 |
| Website | kniferiver.com |
Stock Details
| Ticker Symbol | KNF |
| Exchange | NYSE |
| Stock Type | Common Stock |
| Fiscal Year | January - December |
| Reporting Currency | USD |
| CIK Code | 0001955520 |
| CUSIP Number | 498894104 |
| ISIN Number | US4988941047 |
| Employer ID | 92-1008893 |
| SIC Code | 1400 |
Key Executives
| Name | Position |
|---|---|
| Brian R. Gray | Chief Executive Officer, President and Director |
| Nathan W. Ring | Vice President and Chief Financial Officer |
| Trevor J. Hastings | Vice President and Chief Operating Officer |
| Karl A. Liepitz | Vice President, Chief Legal Officer and Secretary |
| Glenn R. Pladsen | Vice President and Chief Excellence Officer |
| Marney L. Kadrmas | Vice President and Chief Accounting Officer |
| Zane Adam Karimi | Director of Investor Relations |
| Tony Spilde | Senior Director of Communications |
| Sarah L. LaChapelle | Vice President and Chief People Officer |
| Brad Arntson | President of Western North Dakota Division |
Latest SEC Filings
| Date | Type | Title |
|---|---|---|
| Apr 6, 2026 | ARS | Filing |
| Apr 6, 2026 | DEFA14A | Additional definitive proxy soliciting materials and Rule 14(a)(12) material |
| Apr 6, 2026 | DEF 14A | Other definitive proxy statements |
| Mar 27, 2026 | SCHEDULE 13G/A | Filing |
| Feb 20, 2026 | 10-K | Annual Report |
| Feb 17, 2026 | 8-K | Current Report |
| Nov 14, 2025 | SCHEDULE 13G/A | Filing |
| Nov 5, 2025 | 10-Q | Quarterly Report |
| Nov 4, 2025 | 8-K | Current Report |
| Aug 14, 2025 | SCHEDULE 13G | Filing |