BLACK HILLS POWER INC

Related Filers (8)

Financials (104)

10-Q
Tuesday, 11/3/2020
Quarterly Report for period ending 2020-09-30
10-Q
Wednesday, 8/5/2020
Quarterly Report for period ending 2020-06-30
10-Q
Tuesday, 5/5/2020
Quarterly Report for period ending 2020-03-31
10-K
Tuesday, 2/18/2020
Annual Report for period ending 2019-12-31
10-Q
Tuesday, 11/5/2019
Quarterly Report for period ending 2019-09-30
10-Q
Tuesday, 8/6/2019
Quarterly Report for period ending 2019-06-30
10-Q
Friday, 5/3/2019
Quarterly Report for period ending 2019-03-31
10-K
Thursday, 2/21/2019
Annual Report for period ending 2018-12-31
10-Q
Wednesday, 11/7/2018
Quarterly Report for period ending 2018-09-30
10-Q
Tuesday, 8/7/2018
Quarterly Report for period ending 2018-06-30
10-Q
Friday, 5/4/2018
Quarterly Report for period ending 2018-03-31
10-K
Tuesday, 2/27/2018
Annual Report for period ending 2017-12-31
10-Q
Monday, 11/6/2017
Quarterly Report for period ending 2017-09-30
10-Q
Tuesday, 8/8/2017
Quarterly Report for period ending 2017-06-30
10-Q
Monday, 5/8/2017
Quarterly Report for period ending 2017-03-31
10-K
Wednesday, 3/1/2017
Annual Report for period ending 2016-12-31
10-Q
Monday, 11/7/2016
Quarterly Report for period ending 2016-09-30
10-Q
Wednesday, 8/10/2016
Quarterly Report for period ending 2016-06-30
10-Q
Thursday, 5/12/2016
Quarterly Report for period ending 2016-03-31
10-K
Monday, 2/29/2016
Annual Report for period ending 2015-12-31
10-Q
Tuesday, 11/10/2015
Quarterly Report for period ending 2015-09-30
10-Q
Tuesday, 8/11/2015
Quarterly Report for period ending 2015-06-30
10-Q
Thursday, 5/7/2015
Quarterly Report for period ending 2015-03-31
10-K
Thursday, 2/26/2015
Annual Report for period ending 2014-12-31
10-Q
Thursday, 11/6/2014
Quarterly Report for period ending 2014-09-30
10-Q
Friday, 8/8/2014
Quarterly Report for period ending 2014-06-30
10-Q
Wednesday, 5/7/2014
Quarterly Report for period ending 2014-03-31
10-K
Thursday, 2/27/2014
Annual Report for period ending 2013-12-31
10-Q
Tuesday, 11/12/2013
Quarterly Report for period ending 2013-09-30
10-Q
Wednesday, 8/7/2013
Quarterly Report for period ending 2013-06-30
10-Q/A
Tuesday, 5/21/2013
Quarterly Report for period ending 2013-03-31
10-Q
Friday, 5/10/2013
Quarterly Report for period ending 2013-03-31
10-K
Wednesday, 3/6/2013
Annual Report for period ending 2012-12-31
10-Q
Friday, 11/9/2012
Quarterly Report for period ending 2012-09-30
10-Q
Friday, 8/10/2012
Quarterly Report for period ending 2012-06-30
10-Q
Thursday, 5/10/2012
Quarterly Report for period ending 2012-03-31
10-K/A
Monday, 4/2/2012
Annual Report for period ending 2011-12-31
10-K
Monday, 3/12/2012
Annual Report for period ending 2011-12-31
10-Q
Tuesday, 11/8/2011
Quarterly Report for period ending 2011-09-30
10-Q
Thursday, 8/11/2011
Quarterly Report for period ending 2011-06-30
10-Q
Thursday, 5/12/2011
Quarterly Report for period ending 2011-03-31
10-K
Tuesday, 3/8/2011
Annual Report for period ending 2010-12-31
10-Q/A
Tuesday, 2/15/2011
Quarterly Report for period ending 2010-03-31
10-Q/A
Tuesday, 2/15/2011
Quarterly Report for period ending 2010-06-30
10-Q/A
Tuesday, 2/15/2011
Quarterly Report for period ending 2010-09-30
10-K/A
Monday, 2/14/2011
Annual Report for period ending 2009-12-31
10-Q
Wednesday, 11/10/2010
Quarterly Report for period ending 2010-09-30
10-Q
Wednesday, 8/11/2010
Quarterly Report for period ending 2010-06-30
10-Q
Tuesday, 5/11/2010
Quarterly Report for period ending 2010-03-31
10-K
Wednesday, 3/10/2010
Annual Report for period ending 2010-03-09
10-Q
Thursday, 11/12/2009
Quarterly Report for period ending 2009-09-30
10-Q
Friday, 8/14/2009
Quarterly Report for period ending 2009-06-30
10-Q
Thursday, 5/14/2009
Quarterly Report for period ending 2009-03-31
10-K
Tuesday, 3/17/2009
Annual Report for period ending 2008-12-31
10-Q
Friday, 11/14/2008
Quarterly Report for period ending 2008-09-30
10-Q
Thursday, 8/14/2008
Quarterly Report for period ending 2008-06-30
10-Q
Thursday, 5/15/2008
Quarterly Report for period ending 2008-03-31
10-K
Friday, 3/21/2008
Annual Report for period ending 2007-12-31
10-Q
Wednesday, 11/14/2007
Quarterly Report for period ending 2007-09-30
10-Q
Tuesday, 8/14/2007
Quarterly Report for period ending 2007-06-30
10-Q
Tuesday, 5/15/2007
Quarterly Report for period ending 2007-03-31
10-K
Thursday, 3/22/2007
Annual Report for period ending 2006-12-31
10-Q
Tuesday, 11/14/2006
Quarterly Report for period ending 2006-09-30
10-Q
Monday, 8/14/2006
Quarterly Report for period ending 2006-06-30
10-Q
Friday, 5/12/2006
Quarterly Report for period ending 2006-03-31
10-K
Monday, 3/27/2006
Annual Report for period ending 2005-12-31
10-Q
Monday, 11/14/2005
Quarterly Report for period ending 2005-09-30
10-Q
Monday, 8/15/2005
Quarterly Report for period ending 2005-06-30
10-Q
Monday, 5/16/2005
Quarterly Report for period ending 2005-03-31
10-K
Wednesday, 3/30/2005
Annual Report for period ending 2004-12-31
10-Q
Friday, 11/12/2004
Quarterly Report for period ending 2004-09-30
10-Q
Tuesday, 8/10/2004
Quarterly Report for period ending 2004-06-30
10-Q
Thursday, 5/13/2004
Quarterly Report for period ending 2004-03-31
10-K
Thursday, 3/25/2004
Annual Report for period ending 2003-12-31
10-Q
Thursday, 11/13/2003
Quarterly Report for period ending 2003-09-30
10-Q
Wednesday, 8/13/2003
Quarterly Report for period ending 2003-06-30
10-Q
Thursday, 5/15/2003
Quarterly Report for period ending 2003-03-31
10-K
Monday, 3/31/2003
Annual Report for period ending 2002-12-31
10-Q
Thursday, 11/14/2002
Quarterly Report for period ending 2002-09-30
10-Q
Wednesday, 8/14/2002
Quarterly Report for period ending 2002-06-30
10-Q/A
Monday, 7/15/2002
Quarterly Report for period ending 2002-03-31
10-Q
Thursday, 5/16/2002
Quarterly Report for period ending 2002-03-31
10-Q
Wednesday, 11/14/2001
Quarterly Report for period ending 2001-09-30
10-Q
Tuesday, 8/14/2001
Quarterly Report for period ending 2001-06-30
10-Q
Monday, 5/21/2001
Quarterly Report for period ending 2001-03-31
NT 10-Q
Wednesday, 5/16/2001
Notice under Rule 12b25 of inability to timely file all or part of a form 10-Q or 10-QSB for period ending 2001-03-31
10-K
Monday, 4/2/2001
Annual Report for period ending 2000-12-31
10-Q
Wednesday, 11/15/2000
Quarterly Report for period ending 2000-09-30
10-Q
Monday, 8/14/2000
Quarterly Report for period ending 2000-06-30
10-Q
Friday, 5/12/2000
Quarterly Report for period ending 2000-03-31
10-Q
Monday, 11/15/1999
Quarterly Report for period ending 1999-09-30
10-Q
Friday, 8/13/1999
Quarterly Report for period ending 1999-06-30
10-Q
Friday, 5/14/1999
Quarterly Report for period ending 1999-03-31
10-Q/A
Friday, 5/14/1999
Quarterly Report for period ending 1998-03-31
10-Q/A
Friday, 5/14/1999
Quarterly Report for period ending 1998-06-30
10-Q/A
Friday, 5/14/1999
Quarterly Report for period ending 1998-09-30
10-Q
Friday, 11/13/1998
Quarterly Report for period ending 1998-09-30
10-Q
Friday, 8/14/1998
Quarterly Report for period ending 1998-06-30
10-Q
Wednesday, 5/13/1998
Quarterly Report for period ending 1998-03-31
10-Q
Friday, 11/14/1997
Quarterly Report for period ending 1997-09-30
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News (14)

8-K
Monday, 2/5/2018
Current report filing
8-K
Thursday, 10/2/2014
Current report filing
8-K
Wednesday, 7/2/2014
Current report filing
8-K
Tuesday, 10/27/2009
Current report filing
8-K
Thursday, 12/28/2006
Current report filing
8-K
Monday, 7/3/2006
Current report filing
8-K
Friday, 4/11/2003
Current report filing
8-K
Friday, 5/31/2002
Current report filing
8-K
Monday, 7/24/2000
Current report filing
8-K
Wednesday, 6/23/1999
Current report filing
8-K
Monday, 9/28/1998
Current report filing
8-K
Friday, 10/10/1997
Current report filing
8-K
Monday, 7/28/1997
Current report filing
8-K
Thursday, 5/29/1997
Current report filing
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Other (15)

15-15D/A
Tuesday, 2/2/2021
Notice of suspension of duty to file reports pursuant to Section 13 and 15(d) of the Act
15-15D
Monday, 2/1/2021
Notice of suspension of duty to file reports pursuant to Section 13 and 15(d) of the Act
CORRESP
Thursday, 1/27/2011
A correspondence can be sent as a document with another submission type or can be sent as a separate submission.
POSASR
Tuesday, 10/27/2009
Post-effective Amendment to an automatic shelf registration statement on Form S-3ASR or Form F-3ASR
POSASR
Thursday, 10/22/2009
Post-effective Amendment to an automatic shelf registration statement on Form S-3ASR or Form F-3ASR
POS AM
Tuesday, 5/18/2004
Post-effective amendment to a registration statement that is not immediately effective upon filing
10-K405
Friday, 3/29/2002
Annual Report with disclosure of delinquent filers
11-K
Tuesday, 6/27/2000
Annual report of employee stock purchase, savings and similar plans
10-K405/A
Friday, 4/28/2000
Annual Report with disclosure of delinquent filers
10-K405
Monday, 3/13/2000
Annual Report with disclosure of delinquent filers
10-K405
Thursday, 3/11/1999
Annual Report with disclosure of delinquent filers
10-K405
Wednesday, 3/11/1998
Annual Report with disclosure of delinquent filers
10-K405
Monday, 3/10/1997
Annual Report with disclosure of delinquent filers
10-K405/A
Tuesday, 3/19/1996
Annual Report with disclosure of delinquent filers
10-K405
Friday, 3/15/1996
Annual Report with disclosure of delinquent filers
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Ownership (16)

SC 13G/A
Monday, 2/12/2018
STATE STREET CORP: Major Shareholders
SC 13G/A
Monday, 1/10/2011
BlackRock Inc.: Major Shareholders
SC 13G
Friday, 1/8/2010
BlackRock Inc.: Major Shareholders
SC 13G
Thursday, 2/5/2009
BARCLAYS GLOBAL INVESTORS NA /CA/: Major Shareholders
SC 13G
Tuesday, 2/5/2008
BARCLAYS GLOBAL INVESTORS NA /CA/: Major Shareholders
SC 13G
Tuesday, 2/5/2008
BARCLAYS GLOBAL INVESTORS NA /CA/: Major Shareholders
SC 13G
Tuesday, 2/5/2008
BARCLAYS GLOBAL INVESTORS NA /CA/: Major Shareholders
SC 13G
Tuesday, 1/23/2007
BARCLAYS GLOBAL INVESTORS NA /CA/: Major Shareholders
SC 13G/A
Thursday, 1/11/2007
BARCLAYS GLOBAL INVESTORS NA /CA/: Major Shareholders
SC 13G
Thursday, 1/26/2006
BARCLAYS GLOBAL INVESTORS NA /CA/: Major Shareholders
SC 13G/A
Tuesday, 1/10/2006
BARCLAYS PLC: Major Shareholders
SC 13G
Monday, 2/14/2005
BARCLAYS GLOBAL INVESTORS NA /CA/: Major Shareholders
SC 13G/A
Monday, 6/11/2001
FMR CORP: Major Shareholders
SC 13G
Tuesday, 2/13/2001
FMR CORP: Major Shareholders
SC 13D
Friday, 7/14/2000
FORSYTHE GERALD R: Major Shareholders
SC 13G
Thursday, 5/11/2000
KFX INC: Major Shareholders
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Prospectus (15)

424B2
Friday, 10/23/2009
Prospectus filed pursuant to Rule 424(b)(2)
424B5
Thursday, 10/22/2009
Prospectus filed pursuant to Rule 424(b)(5)
FWP
Thursday, 10/22/2009
Filing under Securities Act Rules 163/433 of free writing prospectuses
424B4
Friday, 8/9/2002
Prospectus filed pursuant to Rule 424(b)(4)
S-3/A
Tuesday, 8/6/2002
Registration statement for specified transactions by certain issuers
S-3
Monday, 7/15/2002
Registration statement for specified transactions by certain issuers
S-3DPOS
Tuesday, 1/30/2001
Post-effective amendment to a S-3D registration statement
S-4
Wednesday, 12/13/2000
Registration of securities issued in business combination transactions
S-4/A
Monday, 5/22/2000
Registration of securities issued in business combination transactions
S-4
Wednesday, 5/10/2000
Registration of securities issued in business combination transactions
S-8
Monday, 2/14/2000
Initial registration statement for securities to be offered to employees pursuant to employee benefit plans
S-8
Wednesday, 7/14/1999
Initial registration statement for securities to be offered to employees pursuant to employee benefit plans
S-8
Friday, 8/21/1998
Initial registration statement for securities to be offered to employees pursuant to employee benefit plans
S-8
Friday, 12/6/1996
Initial registration statement for securities to be offered to employees pursuant to employee benefit plans
S-8
Friday, 9/29/1995
Initial registration statement for securities to be offered to employees pursuant to employee benefit plans
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Proxies (4)

DEF 14A
Monday, 3/22/1999
Definitive proxy statements
DEF 14A
Friday, 3/27/1998
Definitive proxy statements
DEF 14A
Tuesday, 3/18/1997
Definitive proxy statements
DEF 14A
Thursday, 3/21/1996
Definitive proxy statements
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