BLACK HILLS CORP /SD/ — Investor Relations & Filings
Black Hills Corp. is a growth-oriented, vertically integrated energy company that operates as a regulated utility. The company's core business involves the generation, transmission, and distribution of electricity, as well as the transmission and distribution of natural gas. It serves approximately 1.35 million residential and commercial customers across a multi-state service area that includes Arkansas, Colorado, Iowa, Kansas, Montana, Nebraska, South Dakota, and Wyoming. The company's stated mission is to 'improve life with energy.' In a significant strategic development, Black Hills Corp. has announced an all-stock merger agreement with NorthWestern Energy to form an expanded regional utility company.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 8-K - BLACK HILLS CORP /SD/ (0001130464) (Filer) | 2026-02-04 | English | |
| S-4 Filing | 2026-01-30 | English | |
| 425 Filing | 2026-01-30 | English | |
| PRIMARY DOCUMENT | 2025-11-12 | English | |
| PRIMARY DOCUMENT | 2025-11-10 | English | |
| 425 Filing | 2025-11-10 | English |
Browse filings by year
17 years| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
3 filings
| |||||
| 32888112 | 8-K - BLACK HILLS CORP /SD/ (0001130464) (Filer) | 2026-02-04 | English | ||
| 28060018 | S-4 Filing | 2026-01-30 | English | ||
| 28059111 | 425 Filing | 2026-01-30 | English | ||
|
2025
12 filings
| |||||
| 11409479 | PRIMARY DOCUMENT | 2025-11-12 | English | ||
| 11409481 | PRIMARY DOCUMENT | 2025-11-10 | English | ||
| 28058425 | 425 Filing | 2025-11-10 | English | ||
| 11409480 | 10-Q | 2025-11-06 | English | ||
| 11409482 | 8-K | 2025-11-05 | English | ||
| 11409483 | PRIMARY DOCUMENT | 2025-10-17 | English | ||
| 11409484 | FORM 8-K | 2025-10-02 | English | ||
| 11409486 | FORM 8-K | 2025-09-29 | English | ||
| 11409485 | 424B2 | 2025-09-26 | English | ||
| 11409487 | FWP | 2025-09-25 | English | ||
| 11409489 | 424B5 | 2025-09-25 | English | ||
| 11409490 | 8-K | 2025-09-15 | English | ||
Market data
Market data not available
Price history
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BLACK HILLS CORP /SD/ 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/31112/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=31112 | 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=31112 | 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=31112 \ -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": 31112}, 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 BLACK HILLS CORP /SD/ (id: 31112)"
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