| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 19, 2019 | Director, Chairman | 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 | 7,311 | $287.35 | 32,626 | |
| Feb 19, 2019 | Director, Chairman | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 16,478 | -- | 21,789 | |
| Feb 19, 2019 | Corp VP & Pres, Mission System | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 4,120 | -- | 31,400 | |
| Feb 19, 2019 | 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 | 1,990 | $287.35 | 29,410 | |
| Feb 19, 2019 | Corp VP & Pres, Mission System | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 4,120 | -- | 11,835 | |
| Feb 19, 2019 | Corp. VP & General Counsel | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 4,120 | -- | 53,737 | |
| Feb 19, 2019 | 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 | 1,990 | $287.35 | 51,747 | |
| Feb 19, 2019 | Corp. VP & General Counsel | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 4,120 | -- | 8,382 | |
| Feb 19, 2019 | Corp VP, Controller & CAO | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 947 | -- | 9,247 | |
| Feb 19, 2019 | Corp VP, Controller & CAO | 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 | 428 | $287.35 | 8,819 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.