Company: NOC
Filing Date: 2025-06-10
Form Type: 11-K
Source: 0001133421-25-000043
Chunk: 5

Company: NORTHROP GRUMMAN CORP /DE/
Filing Date: 2025-06-10
Form: 11-K
Chunk 5
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Certain employees brought on as part of the June 2018 Orbital ATK, Inc acquisition, who were hired between January 1, 2007 and June 5, 2018, are also eligible to receive a Non-Elective Contribution ("NEC"). The NEC contribution is generally made annually in the first quarter of the following year. Generally, participants must be employed by the Company on the last day of the plan year to be eligible to receive the NEC contribution. The NEC contribution ranges from 2.5 percent to 4.0 percent of eligible compensation based on age and years of service. For the year ended December 31, 2024, the Company made a $26.0 million NEC contribution to the Plan, which was remitted to the Plan in March 2025.

For most employees hired after April 1, 2016, and certain employees who did not previously participate in a Company sponsored pension plan or receive a RAC or a NEC, the Company’s matching contributions are generally as follows:

| Employee Contribution                            |     | Company 
 Match   |     |   |
| First 4% of eligible compensation                |     |         | 100 | % |
| For employees with less than 5 years of service: |     |         |     |   |
| Next 4% of eligible compensation                 |     |         |  50 | % |
| Contributions over 8%                            |     |         |   — |   |
| For employees with 5 or more years of service:   |     |         |     |   |
| Next 6% of eligible compensation                 |     |         |  50 | % |
| Contributions over 10%                           |     |         |   — |   |

#### Participant Accounts
Individual accounts are maintained for each Plan participant. Each participant account is credited with participant and Company contributions and an allocation of any Plan earnings. Each participant account is charged with withdrawals and an allocation of any Plan losses and administrative expenses. Allocations are based on participant units. Participants are entitled to the net of these contributions, withdrawals and allocations to the extent of their vesting in the account.

#### Vesting
Plan participants are fully vested in the balance of their accounts from employee contributions and earnings thereon. Plan participants, other than participants covered under certain collective bargaining agreements, become fully vested in Company matching contributions, and earnings thereon, upon completion of three years of service. Plan