| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 18, 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 | 7,481 | $350.36 | 43,148 | |
| Feb 18, 2018 | Director, Chairman and CEO | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 16,745 | -- | 38,267 | |
| Feb 18, 2018 | Corp VP & Pres, Mission System | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 3,256 | -- | 33,574 | |
| Feb 18, 2018 | Corp VP & Pres, Mission System | 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 | 1,573 | $350.36 | 32,001 | |
| Feb 18, 2018 | Corp VP & Pres, Mission System | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 3,256 | -- | 10,470 | |
| Feb 18, 2018 | Corp. VP & General Counsel | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 4,651 | -- | 56,362 | |
| Feb 18, 2018 | Corp. VP & General Counsel | 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 | 2,247 | $350.36 | 54,115 | |
| Feb 18, 2018 | Corp. VP & General Counsel | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 4,651 | -- | 9,657 | |
| Feb 18, 2018 | Corp VP, Communications | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 409 | -- | 2,206 | |
| Feb 18, 2018 | Corp VP, Communications | 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 | 136 | $350.36 | 2,070 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.