| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| DTPI | Chief Financial Officer | Nov 02, 2010 | Option Exercise | $12.50 | 436,916 | 5,461,450 | 0 | Nov 04, 2010, 07:07 PM |
| DTPI | Chief Financial Officer | Aug 16, 2010 | Option Exercise | $9.67 | 6,660 | 64,402 | 434,619 | Aug 18, 2010, 11:15 AM |
| Symbol | Relationship | Date | Transaction | Value($) |
| DTPI | Chief Financial Officer | Nov 02, 2010 | Option Exercise | 5,461,450 |
| DTPI | Chief Financial Officer | Aug 16, 2010 | Option Exercise | 64,402 |