| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| 03/01/16 |
Chief Operating Officer
|
Chief Operating Officer | Form 4 | Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3 | 26,522 | $0.78 | 390,903 |
| 12/13/10 |
Chief Operating Officer
|
Chief Operating Officer | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 27,000 | -- | 190,000 |
| 12/11/08 |
Chief Operating Officer
|
Chief Operating Officer | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 30,000 | -- | 138,250 |
| 12/10/07 |
Vice President of Operations
|
Vice President of Operations | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 30,000 | $34.30 | 115,750 |
| 12/07/05 |
Vice President of Operations
|
Vice President of Operations | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 30,000 | -- | 80,000 |
| 09/09/05 |
Vice President of Operations
|
Vice President of Operations | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 30,000 | $18.20 | 80,000 |
| 09/09/05 |
Vice President of Operations
|
Vice President of Operations | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 30,000 | -- | -- |
| 12/09/09 |
Chief Operating Officer
|
Chief Operating Officer | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 33,000 | -- | 167,250 |
| 02/13/17 |
Chief Operating Officer
|
Chief Operating Officer | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 37,879 | -- | 116,000 |
| 03/03/05 |
Vice President of Operations
|
Vice President of Operations | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 38,000 | $27.78 | 50,000 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.