| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 13, 2018 | Corp VP, CFO | Form 4/A | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 17,755 | -- | 39,987 | |
| Feb 13, 2018 | Corp VP, CFO | 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 | 8,532 | -- | 31,455 | |
| Feb 13, 2018 | Corp VP, CFO | Form 4/A | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 17,755 | -- | 27,770 | |
| 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 | |
| Feb 13, 2018 | Corp. VP & General Counsel | Form 4/A | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 14,796 | -- | 58,858 | |
| Feb 13, 2018 | Corp. VP & General Counsel | 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 | 7,126 | -- | 51,732 | |
| Feb 13, 2018 | Corp. VP & General Counsel | Form 4/A | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 14,796 | -- | 21,876 | |
| Feb 13, 2018 | Corp VP, Controller & CAO | Form 4/A | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 3,128 | -- | 12,679 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.