| Company | Symbol | Price | Amount | Relationship | Remaining Holdings | Date | Form 4 |
| ECOL | $72.15 | 900 | Director | 5,140 | 2018-08-24 | Filing |
| ECOL | $69.76 | 1,300 | Director | 6,040 | 2018-08-07 | Filing |
| ECOL | $59.00 | 1,500 | Director | 6,040 | 2018-05-09 | Filing |
| ECOL | $50.68 | 1,600 | Director | 6,040 | 2017-02-21 | Filing |