Company: NOC
Filing Date: 2025-05-14
Form Type: DEFA14A
Source: 0001133421-25-000029
Chunk: 1

Company: NORTHROP GRUMMAN CORP /DE/
Filing Date: 2025-05-14
Form: DEFA14A
Chunk 1
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 the voting recommendations of the company’s board of directors can be found in the company’s 2025 Proxy Statement. Your vote is important, and your input is valued.

Note that you may have received multiple communications (electronically and/or by mail) containing proxy materials and voting instructions for each type of account in which you hold Northrop Grumman shares. Review each communication carefully as it is likely not a duplicate, and be sure to vote all of your shares in each of your accounts.

Northrop Grumman values your input as a shareholder and we encourage you to vote.

Note: This communication has been sent to all company employees located in the United States, however not all recipients of this message may hold shares. If you are uncertain if you hold shares of Northrop Grumman through a company savings plan, please visit NetBenefits .

<div align='center'>This has been published for Northrop Grumman employees and is intended for internal distribution only.</div>

| News Release |     | Contact:       Kate Mauss (Media) 
 410-832-6792 (office)             
 katherine.mauss@ngc.com           
 Todd Ernst (Investors)            
 703-280-4535 (office)             
 todd.ernst@ngc.com                |

Northrop Grumman to Host Virtual Annual Shareholders Meeting

FALLS CHURCH, Va. – May 14, 2025 – Northrop Grumman Corporation (NYSE: NOC) will conduct its annual shareholders meeting exclusively online on Wednesday, May 21 at 8 a.m. Eastern time. You may access the virtual meeting by following this link , or by visiting virtualshareholdermeeting.com/NOC2025 . We will also provide a link to the virtual meeting on our investor relations webpage at http://investor.northropgrumman.com . A replay will be available for two weeks following the meeting.

If you are a shareholder as of the record date, you may participate, vote, ask questions and review our meeting rules by joining the virtual meeting and using your 16-digit voting control number to log-in. You can log-in to the virtual meeting platform at 7:45 a.m. Eastern time, 15 minutes before the meeting begins. If you encounter difficulties accessing the virtual meeting, please call the technical support number that will be posted on the virtual meeting page. You may also check our investor relations webpage for information about meeting rules or other information regarding the meeting.

Your vote matters. All shareholders are