Company Analysis

Black Hills Corporation (BKH)

NYSE: BKH · Electric Services · Rapid City, SD · filing with the SEC since 2000
Grade5.0
◀ Past 6.1● Present 4.8▶ Future 4.3

Filings

268 filings since 2017 beside 687 insider forms · Large accelerated filer · read from EDGAR on Nov 13, 2026
Due nextLarge accelerated filer
10-K Annual report for the fiscal year ending Dec 31, 2026Large accelerated filers have 60 days after the fiscal year ends. by Mar 1, 2027
10-Q Quarterly report for the quarter ending Mar 31, 2027Large accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end. by May 10, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 35 days after the quarter ended. The proxy statement was last filed Mar 18, 2026.

Filings a yearinsider forms included
1201511015671578564
20192020202120222023202420252026

2026 counts to Nov 13, 2026.

Officer or director change (8-K item 5.02): 5 times in the last 36 months, the newest Aug 19, 2025.SEC letters: 2 in the last 36 months, the newest Feb 5, 2026.
Insider forms 687

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Nov 10, 2026 SCHEDULE 13G Large holder notice
Nov 5, 2026 10-Q Quarterly report Sep 30, 2026
Nov 4, 2026 8-K items 2.02, 9.01 Results released · Current report
Oct 23, 2026 8-K items 7.01, 9.01 Investor disclosure (Regulation FD) · Current report Oct 22, 2026
Oct 6, 2026 8-K items 7.01, 9.01 Investor disclosure (Regulation FD) · Current report
Aug 17, 2026 8-K items 8.01, 9.01 Other event · Current report
Aug 7, 2026 SCHEDULE 13G Large holder notice
Aug 6, 2026 10-Q Quarterly report Jun 30, 2026
Aug 5, 2026 8-K items 2.02, 9.01 Results released · Current report
Jun 18, 2026 11-K Employee plan annual report Dec 31, 2025
May 19, 2026 424B5 Shelf offering
May 19, 2026 S-3ASR Shelf registration
May 15, 2026 8-K items 8.01, 9.01 Other event · Current report
May 12, 2026 SCHEDULE 13G Large holder notice
May 7, 2026 10-Q Quarterly report Mar 31, 2026
May 6, 2026 8-K items 2.02, 9.01 Results released · Current report
May 1, 2026 8-K item 5.07 Shareholder vote · Current report Apr 29, 2026
Apr 29, 2026 SCHEDULE 13G Large holder notice
Apr 29, 2026 SCHEDULE 13G Large holder notice
Apr 2, 2026 8-K items 5.07, 7.01, 9.01 Shareholder vote; Investor disclosure (Regulation FD) · Current report
Mar 26, 2026 SCHEDULE 13G/A Large holder update, amended
Mar 18, 2026 ARS Annual report to shareholders Dec 31, 2025
Mar 18, 2026 DEF 14A Proxy statement Apr 29, 2026
Feb 19, 2026 8-K items 8.01, 9.01 Other event · Current report
Feb 11, 2026 10-K Annual report Dec 31, 2025
Feb 6, 2026 EFFECT Registration effective
Feb 6, 2026 425 Merger communication
Feb 6, 2026 424B3 Shelf offering
Feb 5, 2026 CORRESP Reply to the SEC
Feb 4, 2026 8-K items 2.02, 9.01 Results released · Current report
Feb 4, 2026 CORRESP Reply to the SEC
Jan 30, 2026 425 Merger communication
Jan 30, 2026 S-4 Merger or exchange registration
Nov 10, 2025 425 Merger communication
Nov 6, 2025 10-Q Quarterly report Sep 30, 2025
Nov 5, 2025 8-K items 2.02, 9.01 Results released · Current report
Oct 30, 2025 DRSLTR Form DRSLTR
Oct 30, 2025 DRS Draft registration, confidential
Oct 2, 2025 8-K items 1.01, 2.03, 8.01, 9.01 Major agreement signed; New debt or obligation taken on; Other event · Current report
Sep 29, 2025 8-K items 1.01, 9.01 Major agreement signed · Current report Sep 25, 2025
40 of 268 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton BKH · research, not advice