| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| ZTR | Director | Jan 14, 2011 | Option Exercise | $3.34 | 800 | 2,672 | 3,218 | Jan 24, 2011, 03:18 PM |
| ZTR | Director | Jan 14, 2011 | Option Exercise | $3.34 | 483 | 1,613 | 2,901 | Jan 19, 2011, 11:04 AM |
| Symbol | Relationship | Date | Transaction | Value($) |
| ZTR | Director | Jan 14, 2011 | Option Exercise | 2,672 |
| ZTR | Director | Jan 14, 2011 | Option Exercise | 1,613 |