| Company | Symbol | Price | Amount | Relationship | Remaining Holdings | Date | Form 4 |
| DWSN | $21.98 | 1,000 | Director | 8,921 | 2012-08-23 | Filing |
| DWSN | $23.98 | 100 | Director | 7,628 | 2010-08-27 | Filing |
| DWSN | $23.97 | 200 | Director | 7,728 | 2010-08-27 | Filing |
| DWSN | $23.90 | 1,700 | Director | 7,928 | 2010-08-27 | Filing |