| Filed On | Filing |
|---|---|
| 24 Jan 2023 | SC 13G |
| 09 Feb 2021 | SC 13G |
| 14 Feb 2020 | SC 13G |
| 14 Feb 2019 | MDU RESOURCES GROUP, INC. |
| 14 Feb 2018 | MCDONALD'S CORPORATION |
| 09 Feb 2017 | MDU RESOURCES GROUP, INC. |
| 16 Feb 2016 | MDU RESOURCES GROUP, INC. |
| 12 Feb 2015 | SC 13G |
| 12 Feb 2015 | MDU |
| 03 Feb 2014 | MDU |
| 13 Feb 2013 | SC 13G |
| 12 Feb 2013 | SC 13G |
| 14 Feb 2012 | MDU AS OF 12/31/2011 |
| 29 Jan 2010 | SC 13G |
| 05 Feb 2009 | SC 13G |
| 14 Feb 2002 | SCHEDULE |
| 14 Feb 2000 | SCHEDULE 13G |
| 16 Feb 1999 | INFORMATION STATEMENT |
| 13 Mar 1998 | SCHEDULE 13G |
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