| 2012-03-31 | Northrop Grumman Innovation Systems, Inc. | F | −395 sh | $50.12 | −$19.8K | 4,755 |
| 2012-03-06 | Northrop Grumman Innovation Systems, Inc. | A | +3,099 sh | — | — | 5,150 |
| 2012-03-06 | Northrop Grumman Innovation Systems, Inc. | A | +6,822 sh | — | — | 6,822 |
| 2011-05-17 | Northrop Grumman Innovation Systems, Inc. | A | +1,302 sh | — | — | 2,477 |
| 2011-05-17 | Northrop Grumman Innovation Systems, Inc. | F | −426 sh | $72.70 | −$31K | 2,051 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | M | +1,600 sh | $57.43 | +$91.9K | 4,506 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−835 sh | $72.74 | ▼−$60.7K | 3,671 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−200 sh | $72.76 | ▼−$14.6K | 3,471 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−300 sh | $72.77 | ▼−$21.8K | 3,171 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−265 sh | $72.81 | ▼−$19.3K | 2,906 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−231 sh | $72.57 | ▼−$16.8K | 2,675 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−200 sh | $72.56 | ▼−$14.5K | 2,475 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−400 sh | $72.57 | ▼−$29K | 2,075 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−200 sh | $72.58 | ▼−$14.5K | 1,875 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−200 sh | $72.64 | ▼−$14.5K | 1,675 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−200 sh | $72.70 | ▼−$14.5K | 1,475 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | S | ▼−300 sh | $72.69 | ▼−$21.8K | 1,175 |
| 2010-11-18 | Northrop Grumman Innovation Systems, Inc. | M | −1,600 sh | — | — | 0 |
| 2010-05-12 | Northrop Grumman Innovation Systems, Inc. | A | +2,573 sh | — | — | 3,748 |
| 2010-05-12 | Northrop Grumman Innovation Systems, Inc. | F | −842 sh | $78.45 | −$66.1K | 2,906 |