Company: NOC
Filing Date: 2025-05-27
Form Type: 424B5
Source: 0001193125-25-126289
Chunk: 48

Company: NORTHROP GRUMMAN CORP /DE/
Filing Date: 2025-05-27
Form: 424B5
Chunk 48
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ary. In addition, we may at any time and in our sole discretion, subject to any
limitations described in the prospectus supplement relating to the debt securities, determine not to have any series of debt securities represented by one or more global notes and, in that event, will issue certificated debt securities of that
series in exchange for the global note. Further, if an Event of Default with respect to any series represented by a global note has occurred and is continuing, the global note may be exchanged for certificated debt securities. In that case, each
owner of a beneficial interest in a global note

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will be entitled to physical delivery of certificated debt securities of the series represented by the global note equal in principal amount to that owner’s beneficial interest, and to have those debt securities registered in its name. Payments We will pay interest to direct holders listed in the registrar’s records at the close of business on the record date specified in the applicable prospectus supplement, which usually falls about two weeks in advance of each due date for interest, even if the holder on the record date no longer owns the debt security on the interest payment date. (Section 307)Holders buying and selling debt securities must make their own arrangements to account for the issuer’s payment of all the interest for an interest period to the person who was the registered holder on the record date. If any amount payable on any debt security remains unclaimed at the end of two years after the amount became due and payable, the paying agent or trustee will return that amount to us. (Section 1003) Events of Default Unless we indicate otherwise in a prospectus supplement, the following are events of default under the indenture with respect to any series of 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