Company: NOC
Filing Date: 2025-04-04
Form Type: DEF 14A
Source: 0001133421-25-000016
Chunk: 97

Company: NORTHROP GRUMMAN CORP /DE/
Filing Date: 2025-04-04
Form: DEF 14A
Chunk 97
---
 pension adjustment                                                |     |            |     |   |     |  -696 |     |      |     |   |     |  -448 |     |      |     |   |     | -1,305 |
| Federal tax (benefit) expense of items above                                  |     |            |     |   |     |    -3 |     |      |     |   |     |   -43 |     |      |     |   |     |    120 |
| Approved NOPAT adjustments (post-tax)                                         |     |            |     |   |     |     — |     |      |     |   |     | 1,103 |     |      |     |   |     |      — |
| Pension-Adjusted NOPAT                                                        |     | $          |     |   |     | 3,851 |     |      |     | $ |     | 3,637 |     |      |     | $ |     |  3,522 |
| Pension-Adjusted NOPAT (three-year average)                                   |     | $          |     |   |     | 3,670 |     |      |     |   |     |       |     |      |     |   |     |        |

(1) MTM expense is expected to be deductible on our future state tax returns. The deferred state tax benefit was calculated using the Company’s blended state tax rate of 5.25 percent and included in Unallocated corporate (income) expense within operating income.

(2) The federal tax impact in each period was calculated by subtracting the deferred state tax impact from MTM benefit (expense) and applying the 21 percent federal statutoryrate.

#### 108Northrop Grumman

### Appendix A – Use of Non-GAAP Financial Measures
| ($M)                                  
 ROIC                                  |     | December 31 |     |   | 2024 |        |        |     |   | 2023 |        |     |   | 2022 |        |
|:--------------------------------------|:----|:------------|:----|:--|:-----|-------:|-------:|:----|:--|:-----|-------:|:----|:--|:-----|-------:|
| Shareholders Equity                   |     |             |     | $ |      | 15,290 |        |     | $ |      | 14,795 |     | $ |      |