| Filed On | Filing |
|---|---|
| 11 Feb 2021 | SC 13G |
| 13 Feb 2020 | SC 13G |
| 28 Jan 2020 | SEC SCHEDULE 13G |
| 13 Feb 2019 | BLACK HILLS CORPORATION |
| 14 Feb 2018 | BLACK HILLS CORPORATION |
| 09 Feb 2017 | BLACK HILLS CORPORATION |
| 12 Feb 2016 | BLACK HILLS CORPORATION |
| 10 Feb 2016 | BLACKHILLS CORPORATION |
| 11 Feb 2015 | BKH |
| 13 Feb 2013 | SC 13G |
| 12 Feb 2013 | SC 13G |
| 30 Jan 2013 | SC 13G |
| 09 Feb 2012 | BLACK HILLS CORP. ANNUAL |
| 11 Feb 2011 | SC 13G |
| 12 Feb 2010 | SC 13G |
| 12 May 2009 | SCHEDULE 13-G |
| 05 Oct 2007 | SCHEDULE 13G |
| 14 Feb 2007 | SC 13G |
| 09 Feb 2006 | SCHEDULE 13G |
| 09 Feb 2005 | BKH AS OF 12/31/2004 |
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