| 2014-05-12 | Sale | MDU Resources Group, Inc. MDU | General Counsel and Secretary | 10,034.06 0.0052% | $34.49 | $346,075 | -23.62% | |
| 2009-11-17 | MDU Resources Group, Inc. MDU | General Counsel and Secretary | 883.52 0.0005% | $22.64 | $20,000 | -6.98% | ||
| 2009-05-26 | MDU Resources Group, Inc. MDU | General Counsel and Secretary | 555.56 0.0003% | $18.00 | $10,000 | +16% | ||
| 2009-02-24 | MDU Resources Group, Inc. MDU | General Counsel and Secretary | 1,312.34 0.0007% | $15.24 | $20,000 | +33.03% |