| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 20, 2018 | Corp VP & President AS Systems | Form 4 | Open market or private sale of non-derivative or derivative security | 3,226 | $351.06 | 9,134 | |
| Feb 18, 2018 | Corp VP & President AS Systems | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 3,349 | -- | 14,011 | |
| Feb 18, 2018 | Corp VP & President AS Systems | 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 | 1,651 | $350.36 | 12,360 | |
| Feb 18, 2018 | Corp VP & President AS Systems | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 3,349 | -- | 7,715 | |
| Feb 15, 2018 | Corp VP & President AS Systems | Form 4 | Other acquisition or disposition | -- | -- | 6,138 | |
| Feb 13, 2018 | Corp VP & President AS Systems | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 6,037 | -- | 16,079 | |
| Feb 13, 2018 | Corp VP & President AS Systems | Form 4 | Open market or private sale of non-derivative or derivative security | 2,557 | $335.12 | 13,522 | |
| Feb 13, 2018 | Corp VP & President AS Systems | 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 | 2,860 | -- | 10,662 | |
| Feb 13, 2018 | Corp VP & President AS Systems | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 8,389 | -- | 24,180 | |
| Feb 13, 2018 | Corp VP & President AS Systems | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 6,037 | -- | 18,142 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.