| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 27, 2018 | Corp VP & President AS Systems | Form 4 | Other acquisition or disposition | -- | -- | 6,204 | |
| Feb 26, 2018 | Corp VP, Controller & CAO | Form 4 | Open market or private sale of non-derivative or derivative security | 1,296 | $353.20 | 6,677 | |
| Feb 26, 2018 | Corp VP & President AS Systems | Form 4 | Open market or private sale of non-derivative or derivative security | 849 | $353.20 | 8,245 | |
| Feb 26, 2018 | Corp VP & Chf HR Ofcr | Form 4 | Open market or private sale of non-derivative or derivative security | 3,721 | $353.20 | 21,692 | |
| Feb 22, 2018 | Director, Chairman and CEO | Form 4 | Other acquisition or disposition | -- | -- | 63,980 | |
| Feb 22, 2018 | Director, Chairman and CEO | Form 4 | Other acquisition or disposition | -- | -- | 5,543 | |
| Feb 22, 2018 | Director, Chairman and CEO | Form 4 | Other acquisition or disposition | -- | -- | 63,979 | |
| Feb 22, 2018 | Director, Chairman and CEO | Form 4 | Other acquisition or disposition | -- | -- | 259,053 | |
| Feb 22, 2018 | Corp VP & Pres, Mission System | Form 4 | Other acquisition or disposition | -- | -- | 35 | |
| Feb 22, 2018 | Corp VP & Pres Tech Svcs | Form 4 | Other acquisition or disposition | -- | -- | 1,667 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.