Company: NOC
Filing Date: 2025-05-28
Form Type: 424B5
Source: 0001193125-25-129530
Chunk: 50

Company: NORTHROP GRUMMAN CORP /DE/
Filing Date: 2025-05-28
Form: 424B5
Chunk 50
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 issued debt securities:

| • |     | failure to: |

| • |     | pay the principal or any premium on any debt security of that series when due; |

| • |     | pay interest on any debt security of that series within 30 days of when due; |

| • |     | deposit any sinking fund payment on any debt security of that series when due; or |

| • |     | perform any other covenant in the indenture applicable to that series and the issuer or guarantor, if applicable,                                                                                                   
 that continues for 90 days after we have been given written notice of the failure by the trustee or the holders of at least 25% in aggregate principal amount of the outstanding debt securities of that series; or |

| • |     | the occurrence of specified bankruptcy, insolvency or reorganization events. (Section 501) |

An event of default for one series of debt securities does not necessarily constitute an event of default for any other series under the indenture. If the specified bankruptcy, insolvency or reorganization events occur, the entire principal of all the debt securities of that series will be due and payable immediately. If any other event of default occurs and continues, the trustee, or the holders of at least 25% in aggregate principal amount of the outstanding debt securities of the series, may declare the entire principal of all the debt securities of that series to be due and payable immediately. If this happens, and we cure the event of default in the manner specified in the indenture, the holders of a majority of the aggregate outstanding principal amount of the debt securities of that series can void the acceleration of payment. (Section 502) The indenture provides that the trustee has no obligation to exercise any of its rights at the direction of any holders, unless the holders offer the trustee reasonable indemnity. (Section 603)If they provide this indemnification, the holders of a majority in principal amount of any series of debt securities have the right to direct any proceeding, remedy, or power available to the trustee with respect to that series, subject to certain limitations. (Section 512) 7

Obligations Under the Indenture Unless specified otherwise in the applicable prospectus supplement, the following covenants will apply to any series of debt securities issued under the indenture. Limitations on Liens. The indenture restricts our ability to encumber specified types of our assets or those of our restricted subsidiaries. If we, or any restricted subsidiary, pledges or mortgages any