| 2018-03-14 | Sale | MasTec, Inc. MTZ | director | 15,000 0.0185% | $51.00 | $764,963 | -10.72% | |
| 2018-03-09 | Sale | MasTec, Inc. MTZ | director | 835 0.001% | $51.65 | $43,126 | -11.84% | |
| 2018-03-08 | Sale | MasTec, Inc. MTZ | director | 28,772 0.0354% | $51.09 | $1.47M | -11.24% | |
| 2015-08-31 | MasTec, Inc. MTZ | director | 10,000 0.0118% | $15.63 | $156,300 | +15.4% | ||
| 2015-08-28 | MasTec, Inc. MTZ | director | 20,000 0.0252% | $15.98 | $319,600 | +19.47% | ||
| 2015-01-02 | NorthWestern Corporation NWE | director | 354 0.0007% | $56.58 | $20,029 | -4.87% | ||
| 2014-02-21 | Sale | MasTec, Inc. MTZ | director | 20,000 0.0162% | $23.27 | $465,472 | -19.71% | |
| 2014-02-20 | Sale | MasTec, Inc. MTZ | director | 20,000 0.0157% | $22.75 | $454,970 | -20.12% | |
| 2014-01-15 | Sale | MasTec, Inc. MTZ | director | 15,000 0.0121% | $21.90 | $328,556 | -12.9% | |
| 2013-08-01 | NorthWestern Corporation NWE | director | 652 0.0017% | $42.20 | $27,514 | +8.36% | ||
| 2013-07-01 | NorthWestern Corporation NWE | director | 200 0.0005% | $39.90 | $7,980 | +15% | ||
| 2012-12-06 | Sale | MasTec, Inc. MTZ | director | 75,000 0.0973% | $22.74 | $1.71M | +34.69% | |
| 2011-09-14 | Sale | MasTec, Inc. MTZ | director | 90,000 0.067% | $12.89 | $1.16M | -14.87% | |
| 2011-03-15 | Sale | MasTec, Inc. MTZ | director | 32,184 0.0403% | $19.04 | $612,674 | -2.32% |