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BLACK HILLS CORP /SD/ — 11-K Filings

37 11-K filings on record

This page lists all 11-K filings submitted to the SEC by BLACK HILLS CORP /SD/ (BKH), sorted by most recent first. Each row links to the full filing on EdgarLookup. BLACK HILLS CORP /SD/ has filed 37 11-K documents with the SEC since 2016. To view all SEC filings by BLACK HILLS CORP /SD/, see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-K405 10-K405/A 10-Q 10-Q/A 11-K 144 25-NSE 3 305B2 35-CERT 4 4/A 424B2 424B3 424B4 424B5 424B7 425 5 8-A12B 8-K 8-K/A ARS CERTNYS CORRESP DEF 14A DEFA14A DEFR14A DRS EFFECT FWP POSASR PRE 14A RW S-1 S-1/A S-3 S-3/A S-3ASR S-4 S-4/A S-8 S-8 POS SC 13G SC 13G/A SCHEDULE 13G/A SE U-1 U-1/A U-3A-2 U-6B-2 U-9C-3 U5A U5A/A U5B UPLOAD
Form Description Accession Number Filed Period
11-K 11-K 0000950170-25-088856 Jun 23, 2025 Dec 31, 2024
11-K 11-K 0000950170-24-075416 Jun 20, 2024 Dec 31, 2023
11-K 11-K 0000950170-23-029410 Jun 22, 2023 Dec 31, 2022
11-K 11-K 0001130464-22-000017 Jun 23, 2022 Dec 31, 2021
11-K 11-K 0001130464-21-000024 Jun 22, 2021 Dec 31, 2020
11-K 11-K 0001130464-20-000029 Jun 22, 2020 Dec 31, 2019
11-K 11-K 0001130464-19-000029 Jun 21, 2019 Dec 31, 2018
11-K 11-K 0001130464-18-000038 Jun 26, 2018 Dec 31, 2017
11-K 11-K 0001130464-18-000037 Jun 26, 2018 Dec 31, 2017
11-K 11-K 0001130464-17-000033 Jun 29, 2017 Dec 31, 2016
11-K 11-K 0001130464-17-000032 Jun 29, 2017 Dec 31, 2016
11-K 11-K 0001130464-16-000202 Jun 28, 2016 Dec 31, 2015
11-K 11-K 0001130464-15-000127 Jun 18, 2015 Dec 31, 2014
11-K 11-K 0001130464-14-000121 Jun 25, 2014 Dec 31, 2013
11-K 11-K 0001130464-13-000154 Jun 24, 2013 Dec 31, 2012
11-K — 0001130464-12-000079 Jun 21, 2012 Dec 31, 2011
11-K — 0001130464-11-000050 Jun 28, 2011 Dec 31, 2010
11-K BHC RETIREMENT SAVINGS PLAN ANNUAL REPORT 0001130464-10-000064 Jun 23, 2010 Dec 31, 2009
11-K BHUH FORM 11K 2008 0001130464-09-000193 Jun 29, 2009 Dec 31, 2008
11-K CHEYENNE, LIGHT, FUEL AND POWER COMPANY RETIREMENT SAVINGS PLAN 0001130464-09-000192 Jun 29, 2009 Dec 31, 2008
11-K BLACK HILLS CORPORATION RETIREMENT SAVINGS PLAN 0001130464-09-000191 Jun 29, 2009 Dec 31, 2008
11-K CLF&P FORM 11K RSP 0001130464-08-000202 Jun 27, 2008 Dec 31, 2007
11-K BHC RETIREMENT SAVINGS PLAN 0001130464-08-000200 Jun 27, 2008 Dec 31, 2007
11-K FORM 11K BHC 401K 0001130464-07-000208 Jun 28, 2007 Dec 31, 2006
11-K FORM 11-K CLFP 401K 0001130464-07-000206 Jun 28, 2007 Dec 31, 2006
11-K CLFP FORM 11-K 12-31-2005 0001130464-06-000279 Jun 29, 2006 Dec 31, 2005
11-K FORM 11-K BHC 12-31-2005 0001130464-06-000277 Jun 29, 2006 Dec 31, 2005
11-K BHC FORM 11-K FOR 401-K 12-31-04 0001130464-05-000279 Jun 28, 2005 Dec 31, 2004
11-K BHC ESPP 2004 FORM 11K 0001130464-05-000123 Mar 29, 2005 Dec 31, 2004
11-K RETIREMENT SAVINGS PLAN 2003 11-K 0001130464-04-000225 Jun 25, 2004 Dec 31, 2003
11-K FORM 11-K ESPP 2003 0001130464-04-000116 Mar 24, 2004 Dec 31, 2003
11-K BHC FORM 11-K 401-K 12-31-02 0001130464-03-000166 Jun 27, 2003 Dec 31, 2002
11-K BHC ESPP 11-K 0001130464-03-000056 Mar 31, 2003 Dec 31, 2002
11-K RETIREMENT SAVINGS PLAN - BHC 0001130464-02-000018 May 14, 2002 Dec 31, 2001
11-K BHC EMPLOYEE STOCK PURCHASE PLAN 0001130464-02-000008 Mar 27, 2002 Dec 31, 2001
11-K BLACK HILLS CORPORATION RETIREMENT SAVINGS PLAN 0001130464-01-500008 Jun 29, 2001 Dec 31, 2000
11-K BLACK HILLS CORP EMPLOYEE STOCK PURCHASE PLAN 0000012400-01-000029 Mar 30, 2001 Dec 31, 2000