| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 13, 2018 | Corp VP, CFO | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 17,755 | -- | 27,770 | |
| Feb 13, 2018 | Corp VP, CFO | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 3,161 | -- | 17,832 | |
| Feb 13, 2018 | Director, Chairman and CEO | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 61,720 | -- | 61,721 | |
| Feb 13, 2018 | Director, Chairman and CEO | 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 | 27,837 | -- | 33,884 | |
| Feb 13, 2018 | Director, Chairman and CEO | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 40,461 | -- | 148,429 | |
| Feb 13, 2018 | Director, Chairman and CEO | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 61,720 | -- | 86,708 | |
| Feb 13, 2018 | Director, Chairman and CEO | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 9,033 | -- | 55,012 | |
| Feb 13, 2018 | Corp VP & Pres, Mission System | Form 4/A | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 10,357 | -- | 35,242 | |
| Feb 13, 2018 | Corp VP & Pres, Mission System | Form 4/A | 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 | 4,917 | -- | 30,325 | |
| Feb 13, 2018 | Corp VP & Pres, Mission System | Form 4/A | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 10,357 | -- | 23,666 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.