
Knife River Corp — Investor Relations & Filings
Knife River Corporation is a vertically integrated provider of construction materials and contracting services. The company is a major producer of aggregates, including stone, sand, and gravel, which are fundamental to infrastructure. Its primary product lines also include asphalt and ready-mix concrete for projects such as roads, driveways, and commercial buildings. In addition to material supply, Knife River offers a complete line of heavy-civil construction services, undertaking projects that range from road and bridge construction to site development for large facilities like airports and medical centers. The company's integrated model allows it to manage projects from material production to final construction.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 8-K | 2026-05-21 | English | |
| 8-K | 2026-05-18 | English | |
| 8-K - Knife River Corp (0001955520) (Filer) | 2026-05-05 | English | |
| ARS - Knife River Corp (0001955520) (Filer) | 2026-04-06 | English | |
| DEF 14A - Knife River Corp (0001955520) (Filer) | 2026-04-06 | English | |
| 10-K - KNIFE RIVER CORP (0001955520) (Filer) | 2026-02-20 | English |
Browse filings by year
5 years| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
13 filings
| |||||
| 46753395 | 8-K | 2026-05-21 | English | ||
| 46465297 | 8-K | 2026-05-18 | English | ||
| 41362002 | 8-K - Knife River Corp (0001955520) (Filer) | 2026-05-05 | English | ||
| 33596836 | ARS - Knife River Corp (0001955520) (Filer) | 2026-04-06 | English | ||
| 33596579 | DEF 14A - Knife River Corp (0001955520) (Filer) | 2026-04-06 | English | ||
| 32900640 | 10-K - KNIFE RIVER CORP (0001955520) (Filer) | 2026-02-20 | English | ||
| 32900639 | 4 - KNIFE RIVER CORP (0001955520) (Filer) | 2026-02-17 | English | ||
| 32248266 | 4 Filing | 2026-02-17 | English | ||
| 32248262 | 4 Filing | 2026-02-17 | English | ||
| 32248261 | 4 Filing | 2026-02-17 | English | ||
| 32248260 | 8-K Filing | 2026-02-17 | English | ||
| 32248257 | 4 Filing | 2026-02-17 | English | ||
| 32248248 | 4 Filing | 2026-02-17 | English | ||
|
2025
2 filings
| |||||
| 13629299 | Major Shareholding Notification 2025 | 2025-11-14 | English | ||
| 13629300 | KNIFE RIVER FORM 10-Q 09-30-2025 | 2025-11-04 | English | ||
Market data
Market data not available
Price history
Peer group · Construction of roads and railways
| Company | Ticker | Country | Sector |
|---|---|---|---|
|
IRCON International Ltd
Global EPC services for railway, highway, and energy infras…
|
IRCON | IN | Construction |
|
Jaya Konstruksi Manggala Pratama Tbk
Integrated infrastructure company providing construction, e…
|
JKON | ID | Construction |
|
JAYANT INFRATECH LIMITED
Specializes in 25KV AC Overhead Electrification and rail in…
|
543544 | IN | Construction |
|
J. Kumar Infraprojects Limited
Specializes in complex infrastructure, including metro rail…
|
JKIL | IN | Construction |
|
Ju Fu Tang Biotech Holdings Co., Ltd
Provides civil engineering services, infrastructure constru…
|
8217 | HK | Construction |
|
JULIEN AGRO INFRATECH LIMITED
Engages in civil construction and agricultural commodity tr…
|
536073 | IN | Construction |
|
Kalind Limited
Executes turnkey engineering, signaling, and civil works fo…
|
526935 | IN | Construction |
|
Kaushalya Infrastructure Development Corporation Ltd
Provides EPC services for roads, highways, bridges, and ind…
|
KAUSHALYA | IN | Construction |
|
KAWADA TECHNOLOGIES,INC.
Designs and builds large-scale steel structures using robot…
|
3443 | JP | Construction |
|
KEDGE
Specializes in civil engineering, architecture, and sustain…
|
2546 | TW | Construction |
Knife River Corp via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/31142/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=31142 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=31142 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=31142 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 31142}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for Knife River Corp (id: 31142)"
Report missing filing
Can't find a specific document? Let us know and we'll add it within 24 hours.