| 2024-05-30 | Sale | Black Hills Corporation BKH | director | 3,094 0.0045% | $54.84 | $169,687 | -2.75% | |
| 2024-02-27 | Sale | MSA Safety Incorporated MSA | director | 1,100 0.0028% | $181.84 | $200,019 | +2.85% | |
| 2023-08-30 | Sale | MSA Safety Incorporated MSA | director | 500 0.0013% | $182.65 | $91,326 | -4.88% | |
| 2023-03-01 | Sale | MSA Safety Incorporated MSA | director | 1,949 0.005% | $134.28 | $261,718 | +23.77% | |
| 2022-08-08 | Sale | MSA Safety Incorporated MSA | 500 0.0013% | $127.52 | $63,761 | +6.08% | ||
| 2022-05-20 | Sale | Black Hills Corporation BKH | 500 0.0008% | $73.62 | $36,811 | -3.19% | ||
| 2020-11-04 | Sale | MSA Safety Incorporated MSA | director | 1,000 0.0026% | $139.63 | $139,629 | +18.25% | |
| 2011-06-13 | Black Hills Corporation BKH | director | 3,411 0.0087% | $29.32 | $100,022 | +14.03% |