| 2015-02-26 | MDU Resources Group, Inc. MDU | VP and CFO | 1,500 0.0008% | $22.74 | $34,104 | -13.02% | ||
| 2015-02-18 | MDU Resources Group, Inc. MDU | VP and CFO | 1,000 0.0005% | $21.85 | $21,850 | -12.25% | ||
| 2013-06-21 | MDU Resources Group, Inc. MDU | VP and CFO | 1,500 0.0008% | $24.52 | $36,780 | +25.09% | ||
| 2013-06-20 | MDU Resources Group, Inc. MDU | VP and CFO | 1,500 0.0008% | $24.52 | $36,779 | +26.09% | ||
| 2012-05-25 | MDU Resources Group, Inc. MDU | VP and CFO | 1,000 0.0005% | $22.42 | $22,417 | +0.53% | ||
| 2012-05-24 | MDU Resources Group, Inc. MDU | VP and CFO | 1,000 0.0005% | $22.20 | $22,197 | +0.84% | ||
| 2012-05-23 | MDU Resources Group, Inc. MDU | VP and CFO | 1,000 0.0005% | $22.14 | $22,140 | +1% | ||
| 2012-02-29 | MDU Resources Group, Inc. MDU | VP and CFO | 1,000 0.0005% | $21.79 | $21,794 | +4.03% | ||
| 2012-02-28 | MDU Resources Group, Inc. MDU | VP and CFO | 1,000 0.0005% | $21.90 | $21,896 | +2.83% | ||
| 2011-11-21 | MDU Resources Group, Inc. MDU | VP and CFO | 2,000 0.0011% | $20.08 | $40,155 | +12.08% | ||
| 2011-05-23 | MDU Resources Group, Inc. MDU | VP and CFO | 1,000 0.0005% | $22.76 | $22,760 | -2.36% | ||
| 2010-05-21 | MDU Resources Group, Inc. MDU | VP and CFO | 500 0.0003% | $17.87 | $8,935 | +16.91% | ||
| 2010-05-06 | MDU Resources Group, Inc. MDU | VP and CFO | 1,000 0.0005% | $17.78 | $17,780 | +12.13% | ||
| 2010-02-26 | MDU Resources Group, Inc. MDU | VP and CFO | 5,000 0.0026% | $20.36 | $101,804 | +3.48% | ||
| 2009-05-18 | MDU Resources Group, Inc. MDU | VP and CAO | 5,000 0.0027% | $17.12 | $85,600 | +23.29% | ||
| 2009-02-27 | MDU Resources Group, Inc. MDU | VP and CAO | 3,000 0.0016% | $15.23 | $45,684 | +38.38% |