# EDGAR Filing Document

**Accession Number:** 0001130464
**File Stem:** 9999999995-26-000474
**Filing Date:** 2026-2
**Character Count:** 1428
**Document Hash:** 6594348708a0a3db08ef05b51664a5a0
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-26-000474.hdr.sgml**: 20260209

**ACCESSION NUMBER**: 9999999995-26-000474

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260206

**DATE AS OF CHANGE**: 20260209

**EFFECTIVENESS DATE**: 20260206

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BLACK HILLS CORP /SD/
- **CENTRAL INDEX KEY:** 0001130464
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC SERVICES [4911]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 460458824
- **STATE OF INCORPORATION:** SD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-293105
- **FILM NUMBER:** 26609437

**BUSINESS ADDRESS:**
- **STREET 1:** 7001 MT RUSHMORE RD
- **STREET 2:** PO BOX 1400
- **CITY:** RAPID CITY
- **STATE:** SD
- **ZIP:** 57709
- **BUSINESS PHONE:** 6057212343

**MAIL ADDRESS:**
- **STREET 1:** 7001 MT RUSHMORE RD
- **STREET 2:** PO BOX 1400
- **CITY:** RAPID
- **STATE:** SD
- **ZIP:** 57709

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BLACK HILLS HOLDING CORP
- **DATE OF NAME CHANGE:** 20001222

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** February 6, 2026

**Time:** 16:00:00

**Form Type:** S-4

---

**CIK:** 0001130464

**Company Name:** BLACK HILLS CORP /SD/

**File Number:** 333-293105