| 2018-09-28 | Sale | Matrix Service Company MTRX | President, Matrix PDM Eng | 25,294 0.0917% | $24.06 | $608,556 | -19.51% | |
| 2018-09-26 | Sale | Matrix Service Company MTRX | President, Matrix PDM Eng | 898 0.0033% | $24.50 | $22,001 | -18.65% | |
| 2018-09-25 | Sale | Matrix Service Company MTRX | President, Matrix PDM Eng | 1,334 0.005% | $24.75 | $33,017 | -18.98% | |
| 2016-12-27 | Sale | Matrix Service Company MTRX | President, Matrix PDM Eng | 50,600 0.1905% | $22.59 | $1.14M | -34.51% | |
| 2016-12-22 | Sale | Matrix Service Company MTRX | President, Matrix PDM Eng | 16,144 0.0609% | $22.70 | $366,545 | -34.66% | |
| 2007-04-17 | Sale | Matrix Service Company MTRX | President, Matrix Service | 4,000 0.0014% | $2.19 | $8,750 | -12.97% | |
| 2003-10-21 | Sale | Matrix Service Company MTRX | SVP/M&R-Non-union | 6,000 0.0737% | $24.25 | $145,500 | -4.43% | |
| 2003-10-20 | Sale | Matrix Service Company MTRX | SVP/M&R Non-Union | 2,000 0.025% | $24.01 | $48,016 | -1.43% | |
| 2003-10-15 | Sale | Matrix Service Company MTRX | SVP/M&R-Non-Union | 2,400 0.0301% | $23.75 | $57,000 | +0.21% |