| SC 13G/A | 2020-03-10 | Capital International Investors | NORTHROP GRUMMAN CORP /DE/ | 16,795,547 | 10.0% | EDGAR |
| SC 13G/A | 2020-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | NORTHROP GRUMMAN CORP /DE/ | 3,227,381 | 1.9% | EDGAR |
| SC 13G/A | 2020-02-14 | Capital International Investors | NORTHROP GRUMMAN CORP /DE/ | 16,821,812 | 9.9% | EDGAR |
| SC 13G | 2020-02-14 | STATE STREET CORP | NORTHROP GRUMMAN CORP /DE/ | - | 10.1% | EDGAR |
| SC 13G/A | 2020-02-12 | VANGUARD GROUP INC | NORTHROP GRUMMAN CORP /DE/ | 13,283,416 | 7.9% | EDGAR |
| SC 13G/A | 2020-02-05 | BlackRock Inc. | NORTHROP GRUMMAN CORP /DE/ | 10,720,381 | 6.4% | EDGAR |
| SC 13G | 2019-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | NORTHROP GRUMMAN CORP /DE/ | 11,458,250 | 6.6% | EDGAR |
| SC 13G | 2019-02-14 | Capital International Investors | NORTHROP GRUMMAN CORP /DE/ | 10,452,149 | 6.0% | EDGAR |
| SC 13G | 2019-02-13 | STATE STREET CORP | NORTHROP GRUMMAN CORP /DE/ | - | 10.2% | EDGAR |
| SC 13G/A | 2019-02-11 | VANGUARD GROUP INC | NORTHROP GRUMMAN CORP /DE/ | 13,976,016 | 8.0% | EDGAR |
| SC 13G/A | 2019-02-06 | BlackRock Inc. | NORTHROP GRUMMAN CORP /DE/ | 11,613,939 | 6.7% | EDGAR |
| SC 13G | 2018-02-14 | STATE STREET CORP | NORTHROP GRUMMAN CORP /DE/ | - | 11.1% | EDGAR |
| SC 13G/A | 2018-02-09 | VANGUARD GROUP INC | NORTHROP GRUMMAN CORP /DE/ | 13,248,398 | 7.6% | EDGAR |
| SC 13G/A | 2018-01-29 | BlackRock Inc. | NORTHROP GRUMMAN CORP /DE/ | 13,545,765 | 7.8% | EDGAR |
| SC 13G | 2017-02-14 | STATE STREET CORP | NORTHROP GRUMMAN CORP /DE/ | - | 11.3% | EDGAR |
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | NORTHROP GRUMMAN CORP /DE/ | 12,232,415 | 6.9% | EDGAR |
| SC 13G/A | 2017-01-25 | BlackRock Inc. | NORTHROP GRUMMAN CORP /DE/ | 12,711,186 | 7.2% | EDGAR |
| SC 13G/A | 2016-10-12 | STATE STREET CORP | NORTHROP GRUMMAN CORP /DE/ | - | 11.0% | EDGAR |
| SC 13G/A | 2016-10-11 | STATE STREET CORP | NORTHROP GRUMMAN CORP /DE/ | - | 3.8% | EDGAR |
| SC 13G | 2016-02-16 | STATE STREET CORP | NORTHROP GRUMMAN CORP /DE/ | - | 11.0% | EDGAR |