| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 27, 2008 | Corp VP & Pres Mission Systems | Form 4 | Other acquisition or disposition | -- | -- | 5,466 | |
| Feb 27, 2008 | Corp VP & Pres Mission Systems | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 8,150 | $80.82 | 75,640 | |
| Feb 27, 2008 | Corp VP & Pres Mission Systems | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 37,200 | -- | 37,200 | |
| Feb 25, 2008 | Corp VP & Pres Mission 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 | 8,532 | $81.00 | 67,490 | |
| Feb 22, 2008 | Corp VP & Pres Mission Systems | Form 4 | Other acquisition or disposition | -- | -- | 5,466 | |
| Feb 20, 2008 | Corp VP & Pres Mission Systems | Form 4 | Other acquisition or disposition (describe transaction) | 6,909 | $81.00 | 76,022 | |
| Oct 30, 2007 | Corp VP & Pres Mission Systems | Form 4 | Other acquisition or disposition | -- | -- | 5,441 | |
| Oct 29, 2007 | Corp VP & Pres Mission Systems | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 2,144 | $49.85 | 70,767 | |
| Oct 29, 2007 | Corp VP & Pres Mission 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 | 1,654 | $82.47 | 69,113 | |
| Oct 29, 2007 | Corp VP & Pres Mission Systems | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 2,144 | -- | -- |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.